mirror of
https://github.com/renbaoshuo/S2OJ.git
synced 2024-12-23 19:51:52 +00:00
679 lines
15 KiB
PHP
679 lines
15 KiB
PHP
<?php
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// this class depends on getUOJConf from uoj-judger-lib.php sometimes
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// be sure to include the lib
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// TODO: move getUOJConf into a static class independent of uoj-judger-lib.php
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class UOJProblem {
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use UOJDataTrait;
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use UOJArticleTrait;
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public static array $difficulty = [
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800,
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1000,
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1200,
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1400,
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1600,
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1800,
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1900,
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2000,
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2100,
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2200,
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2300,
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2400,
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2500,
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2600,
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2700,
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2900,
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3100,
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3300,
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3500,
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];
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public static array $difficulty_color = [
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800 => '#008000',
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1000 => '#008000',
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1200 => '#00c0c0',
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1400 => '#00c0c0',
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1600 => '#0000ff',
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1800 => '#0000ff',
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1900 => '#0000ff',
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2000 => '#aa00aa',
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2100 => '#aa00aa',
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2200 => '#aa00aa',
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2300 => '#ff8000',
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2400 => '#ff8000',
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2500 => '#ff8000',
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2600 => '#ff0000',
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2700 => '#ff0000',
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2900 => '#ff0000',
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3100 => '#aa0000',
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3300 => '#aa0000',
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3500 => '#aa0000',
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];
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public static array $categories = [
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'算法基础' => [
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'暴力',
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'枚举',
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'模拟',
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'递归与分治',
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'贪心',
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'排序',
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'前缀和与差分',
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'二分',
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'倍增',
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'构造',
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'打表',
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],
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'搜索' => [
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'深度优先搜索',
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'广度优先搜索',
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'双向搜索',
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'启发式搜索',
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'A*',
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'IDA*',
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'迭代加深',
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'回溯法',
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'Dancing Links',
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],
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'动态规划' => [
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'记忆化搜索',
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'线性 DP',
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'背包 DP',
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'区间 DP',
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'树形 DP',
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'状压 DP',
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'数位 DP',
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'DAG 上 DP',
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'插头 DP',
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'概率 DP',
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'单调队列优化 DP',
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'斜率优化 DP',
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'四边形不等式优化 DP',
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],
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'计算几何' => [
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'Pick 定理',
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'三角剖分',
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'凸包',
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'扫描线',
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'旋转卡壳',
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'半平面交',
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'平面最近点对',
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'随机增量法',
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'反演变换',
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],
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'数学' => [
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'位运算',
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'快速幂',
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'高精度',
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'生成函数',
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'指数生成函数',
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'向量',
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'矩阵',
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'高斯消元',
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'线性基',
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'线性规划',
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'容斥',
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'组合计数',
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'离散对数',
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'单纯形算法',
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'概率',
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'置换群',
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'斐波那契数列',
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'牛顿迭代法',
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'数值积分',
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'分块打表',
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],
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'数论' => [
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'最大公约数',
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'分解质因数',
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'欧拉函数',
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'筛法',
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'欧拉定理',
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'费马小定理',
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'类欧几里得算法',
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'翡蜀定理',
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'乘法逆元',
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'线性同余方程',
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'Meissel-Lehmer 算法',
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'二次剩余',
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'BSGS',
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'原根',
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'卢卡斯定理',
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'莫比乌斯反演',
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'拉格朗日反演',
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'杜教筛',
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'Powerful Number 筛',
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'Min_25 筛',
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'洲阁筛',
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'连分数',
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'Stern-Brocot 数与 Farey 序列',
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'Pell 方程',
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],
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'字符串' => [
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'字符串哈希',
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'字典树',
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'KMP',
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'Boyer-Moore',
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'Z 函数（扩展 KMP）',
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'AC 自动机',
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'后缀数组',
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'后缀自动机',
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'后缀平衡树',
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'广义后缀自动机',
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'Manacher',
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'回文树',
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'序列自动机',
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'最小表示法',
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'Lyndon 分解',
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],
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'图论' => [
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'拓扑排序',
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'最短路',
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'K 短路',
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'同余最短路',
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'虚树',
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'树分治',
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'动态树分治',
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'树哈希',
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'树上启发式合并',
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'AHU 算法',
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'矩阵树定理',
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'最小生成树',
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'最小树形图',
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'最小直径生成树',
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'斯坦纳树',
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'拆点',
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'差分约束',
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'强连通分量',
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'双连通分量',
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'割点与桥',
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'圆方树',
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'2-SAT',
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'欧拉图',
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'哈密顿图',
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'最小环',
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'平面图',
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'网络流',
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'最大流',
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'最小割',
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'费用流',
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'上下界网络流',
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'Stoer-Wagner 算法',
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'二分图',
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'二分图最大匹配',
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'二分图最大权匹配',
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'一般图最大匹配',
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'一般图最大权匹配',
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'Prufer 序列',
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'LGV 引理',
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'弦图',
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],
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'组合数学' => [
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'排列组合',
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'卡特兰数',
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'斯特林数',
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'贝尔数',
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'伯努利数',
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'康托展开',
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'容斥原理',
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'抽屉原理',
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'欧拉数',
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],
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'数据结构' => [
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'栈',
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'队列',
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'链表',
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'哈希表',
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'并查集',
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'二叉堆',
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'配对堆',
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'树状数组',
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'线段树',
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'平衡树',
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'左偏树',
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'块状数组',
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'块状链表',
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'树分块',
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'Sqrt Tree',
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'可持久化数据结构',
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'单调栈',
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'单调队列',
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'ST 表',
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'树套树',
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'李超线段树',
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'区间最值操作与区间历史最值',
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'划分树',
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'跳表',
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'K-D Tree',
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'珂朵莉树',
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'动态树',
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'析合树',
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],
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'多项式' => [
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'拉格朗日插值',
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'快速傅里叶变换',
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'快速数论变换',
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'快速沃尔什变换',
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'多项式求逆',
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'多项式开方',
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'多项式除法与取模',
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'多项式对数函数与指数函数',
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'多项式牛顿迭代',
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'多项式多点求值与快速插值',
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'多项式三角函数',
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'多项式反三角函数',
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'常系数齐次线性递推',
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],
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'博弈论' => [
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'不平等博弈',
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'SG 函数',
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'Nim 游戏',
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'Anti-Nim',
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'纳什均衡',
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],
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'杂项' => [
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'构造',
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'离散化',
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'CDQ 分治',
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'整体二分',
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'分块',
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'莫队',
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'分数规划',
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'随机化',
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'模拟退火',
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'爬山法',
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'悬线法',
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'编译原理',
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'复杂度分析',
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'语义分析',
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'底层优化',
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],
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];
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public static function query($id) {
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if (!isset($id) || !validateUInt($id)) {
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return null;
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}
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$info = DB::selectFirst([
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"select * from problems",
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"where", ['id' => $id]
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]);
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if (!$info) {
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return null;
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}
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return new UOJProblem($info);
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}
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public static function upgradeToContestProblem() {
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return (new UOJContestProblem(self::cur()->info, UOJContest::cur()))->setAsCur()->valid();
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}
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public static function userCanManageSomeProblem(array $user = null) {
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if (!$user) {
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return false;
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}
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if (isSuperUser($user) || UOJUser::checkPermission($user, 'problems.manage')) {
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return true;
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}
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return DB::selectFirst([
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DB::lc(), "select 1 from problems_permissions",
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"where", [
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'username' => $user['username']
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], DB::limit(1)
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]) != null || DB::selectFirst([
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DB::lc(), "select 1 from problems",
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"where", [
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"uploader" => $user['username'],
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], DB::limit(1),
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]) != null;
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}
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public static function userCanCreateProblem(array $user = null) {
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if (!$user) {
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return false;
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}
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return isSuperUser($user) || UOJUser::checkPermission($user, 'problems.create');
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}
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public function __construct($info) {
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$this->info = $info;
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}
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public function getTitle(array $cfg = []) {
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$cfg += [
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'with' => 'id',
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'simplify' => false
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];
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$title = $this->info['title'];
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if ($cfg['simplify']) {
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$title = trim($title);
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$title = mb_ereg_replace('^(\[[^\]]*\]|【[^】]*】)', '', $title);
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$title = trim($title);
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}
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if ($cfg['with'] == 'id') {
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return "#{$this->info['id']}. {$title}";
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} else {
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return $title;
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}
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}
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public function getUri($where = '') {
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return "/problem/{$this->info['id']}{$where}";
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}
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public function getLink(array $cfg = []) {
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return HTML::link($this->getUri(), $this->getTitle($cfg), ['escape' => false]);
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}
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public function getAttachmentUri() {
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return '/download/problem/' . $this->info['id'] . '/attachment.zip';
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}
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public function getMainDataUri() {
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return '/download/problem/' . $this->info['id'] . '/data.zip';
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}
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public function getUploaderLink() {
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return UOJUser::getLink($this->info['uploader'] ?: "root");
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}
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public function getDifficultyHTML() {
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$difficulty = (int)$this->info['difficulty'];
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$difficulty_text = in_array($difficulty, static::$difficulty) ? $difficulty : '?';
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$difficulty_color = in_array($difficulty, static::$difficulty) ? static::$difficulty_color[$difficulty] : '#7e7e7e';
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return HTML::tag('span', ['class' => 'uoj-difficulty', 'style' => "color: $difficulty_color"], $difficulty_text);
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}
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public function findInContests() {
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$res = DB::selectAll([
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"select contest_id from contests_problems",
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"where", ['problem_id' => $this->info['id']]
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]);
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$cps = [];
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foreach ($res as $row) {
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$cp = new UOJContestProblem($this->info, UOJContest::query($row['contest_id']));
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if ($cp->valid()) {
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$cps[] = $cp;
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}
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}
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return $cps;
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}
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public function userCanClickZan(array $user = null) {
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if ($this->userCanView($user)) {
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return true;
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}
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foreach ($this->findInContests() as $cp) {
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if ($cp->userCanClickZan($user)) {
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return true;
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}
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}
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return false;
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}
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public function getZanBlock() {
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return ClickZans::getBlock('P', $this->info['id'], $this->info['zan']);
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}
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public function getSubmissionRequirement() {
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return json_decode($this->info['submission_requirement'], true);
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}
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public function getExtraConfig($key = null) {
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$extra_config = json_decode($this->info['extra_config'], true);
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$extra_config += [
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'view_content_type' => 'ALL',
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'view_all_details_type' => 'ALL',
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'view_details_type' => 'ALL',
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'view_solution_type' => 'ALL',
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'submit_solution_type' => 'ALL_AFTER_AC',
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'need_to_review_hack' => false,
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'add_hack_as' => 'ex_test',
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];
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return $key === null ? $extra_config : $extra_config[$key];
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}
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public function getCustomTestRequirement() {
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$extra_config = json_decode($this->info['extra_config'], true);
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if (isset($extra_config['custom_test_requirement'])) {
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return $extra_config['custom_test_requirement'];
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} else {
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$answer = [
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'name' => 'answer',
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'type' => 'source code',
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'file_name' => 'answer.code'
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];
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foreach ($this->getSubmissionRequirement() as $req) {
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if ($req['name'] == 'answer' && $req['type'] == 'source code' && isset($req['languages'])) {
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$answer['languages'] = $req['languages'];
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}
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}
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return [
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$answer, [
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'name' => 'input',
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'type' => 'text',
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'file_name' => 'input.txt'
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]
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];
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}
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}
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public function userCanView(array $user = null, array $cfg = []) {
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$cfg += ['ensure' => false];
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if ($this->info['is_hidden'] && !$this->userCanManage($user)) {
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$cfg['ensure'] && UOJResponse::page404();
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return false;
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}
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if (!UOJUser::checkPermission($user, 'problems.view')) {
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$cfg['ensure'] && UOJResponse::page403();
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return false;
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}
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return true;
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}
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/**
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* Get a SQL cause to determine whether a user can view a problem
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* Need to be consistent with the member function userCanView
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*/
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public static function sqlForUserCanView(array $user = null) {
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if (isSuperUser($user) || UOJUser::checkPermission($user, 'problems.manage')) {
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return "(1)";
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} elseif (UOJProblem::userCanManageSomeProblem($user)) {
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return DB::lor([
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"problems.is_hidden" => false,
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DB::land([
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"problems.is_hidden" => true,
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DB::lor([
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[
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"problems.id", "in", DB::rawbracket([
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"select problem_id from problems_permissions",
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"where", ["username" => $user['username']]
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])
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],
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[
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"problems.id", "in", DB::rawbracket([
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"select problem_id from problems",
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"where", ["uploader" => $user['username']]
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])
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],
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])
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])
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]);
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} else {
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return "(problems.is_hidden = false)";
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}
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}
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public function isUserOwnProblem(array $user = null) {
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if (!$user) {
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return false;
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}
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return $user['username'] === $this->info['uploader'];
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}
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public function userPermissionCodeCheck(array $user = null, $perm_code) {
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switch ($perm_code) {
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case 'ALL':
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return true;
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case 'ALL_AFTER_AC':
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return $this->userHasAC($user);
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case 'NONE':
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return false;
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default:
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return null;
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}
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}
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public function userCanUploadSubmissionViaZip(array $user = null) {
|
||
foreach ($this->getSubmissionRequirement() as $req) {
|
||
if ($req['type'] == 'source code') {
|
||
return false;
|
||
}
|
||
}
|
||
return true;
|
||
}
|
||
|
||
public function userCanDownloadAttachments(array $user = null) {
|
||
if ($this->userCanView($user)) {
|
||
return true;
|
||
}
|
||
foreach ($this->findInContests() as $cp) {
|
||
if ($cp->userCanDownloadAttachments($user)) {
|
||
return true;
|
||
}
|
||
}
|
||
return false;
|
||
}
|
||
|
||
public function userCanManage(array $user = null) {
|
||
if (!$user) {
|
||
return false;
|
||
}
|
||
|
||
if (isSuperUser($user) || $this->isUserOwnProblem($user) || UOJUser::checkPermission($user, 'problems.manage')) {
|
||
return true;
|
||
}
|
||
|
||
return DB::selectFirst([
|
||
DB::lc(), "select 1 from problems_permissions",
|
||
"where", [
|
||
'username' => $user['username'],
|
||
'problem_id' => $this->info['id']
|
||
]
|
||
]) != null;
|
||
}
|
||
|
||
public function userCanDownloadTestData(array $user = null) {
|
||
if ($this->userCanManage($user)) {
|
||
return true;
|
||
}
|
||
|
||
if (!UOJUser::checkPermission($user, 'problems.download_testdata')) {
|
||
return false;
|
||
}
|
||
|
||
foreach ($this->findInContests() as $cp) {
|
||
if ($cp->contest->userHasRegistered($user) && $cp->contest->progress() == CONTEST_IN_PROGRESS) {
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
public function preHackCheck(array $user = null) {
|
||
return $this->info['hackable'] && (!$user || $this->userCanView($user));
|
||
}
|
||
|
||
public function needToReviewHack() {
|
||
return $this->getExtraConfig('need_to_review_hack');
|
||
}
|
||
|
||
public function userHasAC(array $user = null) {
|
||
if (!$user) {
|
||
return false;
|
||
}
|
||
return DB::selectFirst([
|
||
DB::lc(), "select 1 from best_ac_submissions",
|
||
"where", [
|
||
'submitter' => $user['username'],
|
||
'problem_id' => $this->info['id']
|
||
]
|
||
]) != null;
|
||
}
|
||
|
||
public function preSubmitCheck() {
|
||
return true;
|
||
}
|
||
|
||
public function additionalSubmissionComponentsCannotBeSeenByUser(array $user = null, UOJSubmission $submission) {
|
||
foreach ($this->findInContests() as $cp) {
|
||
if ($cp->contest->userHasRegistered($user) && $cp->contest->progress() == CONTEST_IN_PROGRESS) {
|
||
if ($submission->userIsSubmitter($user)) {
|
||
if ($cp->contest->getJudgeTypeInContest() == 'no-details') {
|
||
return ['low_level_details'];
|
||
} else {
|
||
return [];
|
||
}
|
||
} else {
|
||
return ['content', 'high_level_details', 'low_level_details'];
|
||
}
|
||
}
|
||
}
|
||
|
||
return [];
|
||
}
|
||
|
||
public function getDataFolderPath() {
|
||
return "/var/uoj_data/{$this->info['id']}";
|
||
}
|
||
|
||
public function getDataZipPath() {
|
||
return "/var/uoj_data/{$this->info['id']}.zip";
|
||
}
|
||
|
||
public function getDataFilePath($name = '') {
|
||
// return "zip://{$this->getDataZipPath()}#{$this->info['id']}/$name";
|
||
return "{$this->getDataFolderPath()}/$name";
|
||
}
|
||
|
||
public function getProblemConfArray(string $where = 'data') {
|
||
if ($where === 'data') {
|
||
return getUOJConf($this->getDataFilePath('problem.conf'));
|
||
} else {
|
||
return null;
|
||
}
|
||
}
|
||
|
||
public function getProblemConf(string $where = 'data') {
|
||
if ($where === 'data') {
|
||
return UOJProblemConf::getFromFile($this->getDataFilePath('problem.conf'));
|
||
} else {
|
||
return null;
|
||
}
|
||
}
|
||
|
||
public function getNonTraditionalJudgeType() {
|
||
$conf = $this->getProblemConf();
|
||
if (!($conf instanceof UOJProblemConf)) {
|
||
return false;
|
||
}
|
||
return $conf->getNonTraditionalJudgeType();
|
||
}
|
||
}
|
||
|
||
UOJProblem::$table_for_content = 'problems_contents';
|
||
UOJProblem::$key_for_content = 'id';
|
||
UOJProblem::$fields_for_content = ['*'];
|
||
UOJProblem::$table_for_tags = 'problems_tags';
|
||
UOJProblem::$key_for_tags = 'problem_id';
|