mirror of
https://git.sb/baoshuo/OI-codes.git
synced 2024-11-23 20:08:47 +00:00
parent
0968dea630
commit
a98b7f0ed3
135
S2OJ/162/162.cpp
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135
S2OJ/162/162.cpp
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#include <bits/stdc++.h>
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using namespace std;
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/**
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* 线段树节点
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*/
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struct node {
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int l, r;
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long long s, d;
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node(int _l = 0, int _r = 0)
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: l(_l), r(_r), s(0), d(0) {}
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} tr[100005 << 2];
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int n, m, op, x, y, k, a[100005];
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/**
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* 上传区间和
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* @param u 父节点下标
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*/
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void pushup(int u) {
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tr[u].s = tr[u << 1].s + tr[u << 1 | 1].s;
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}
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/**
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* 下放懒标记
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* @param u 父节点下标
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*/
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void pushdown(int u) {
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if (!tr[u].d) return;
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// 处理左子树
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tr[u << 1].d += tr[u].d;
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tr[u << 1].s += (tr[u << 1].r - tr[u << 1].l + 1) * tr[u].d;
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// 处理右子树
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tr[u << 1 | 1].d += tr[u].d;
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tr[u << 1 | 1].s += (tr[u << 1 | 1].r - tr[u << 1 | 1].l + 1) * tr[u].d;
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// 清除懒标记
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tr[u].d = 0;
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}
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/**
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* 建立线段树
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* @param u 根节点下标
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* @param l 左端点
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* @param r 右端点
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*/
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void build(int u, int l, int r) {
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tr[u] = node(l, r);
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if (l == r) {
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tr[u].s = a[l];
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return;
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}
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int mid = l + r >> 1;
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build(u << 1, l, mid);
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build(u << 1 | 1, mid + 1, r);
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pushup(u);
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}
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/**
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* 修改区间
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* @param u 父节点下标
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* @param l 左端点
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* @param r 右端点
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* @param d 增加的值
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*/
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void modify(int u, int l, int r, int d) {
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if (tr[u].l >= l && tr[u].r <= r) { // 被包含直接修改
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tr[u].d += d;
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tr[u].s += (tr[u].r - tr[u].l + 1) * d;
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return;
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}
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int mid = tr[u].l + tr[u].r >> 1;
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pushdown(u); // 下放懒标记
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if (l <= mid) modify(u << 1, l, r, d); // 和左侧有交集
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if (r > mid) modify(u << 1 | 1, l, r, d); // 和右侧有交集
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pushup(u); // 上传新信息
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}
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/**
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* 区间查询
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* @param u 父节点
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* @param l 左端点
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* @param r 右端点
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*/
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long long query(int u, int l, int r) {
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if (tr[u].l >= l && tr[u].r <= r) { // 被包含直接返回
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return tr[u].s;
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}
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int mid = tr[u].l + tr[u].r >> 1;
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long long s = 0;
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pushdown(u); // 下放懒标记
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if (l <= mid) s += query(u << 1, l, r); // 和左侧有交集
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if (r > mid) s += query(u << 1 | 1, l, r); // 和右侧有交集
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return s;
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}
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int main() {
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std::ios::sync_with_stdio(false);
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cin.tie(nullptr);
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cin >> n >> m;
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for (int i = 1; i <= n; i++) {
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cin >> a[i];
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}
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build(1, 1, n);
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for (int i = 0; i < m; i++) {
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cin >> op >> x >> y;
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if (op == 1) {
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cin >> k;
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modify(1, x, y, k);
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} else if (op == 2) {
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cout << query(1, x, y) << endl;
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}
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}
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return 0;
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}
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(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data47.out
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data48.in
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data48.in
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data48.out
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data48.out
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data49.in
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data49.in
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data49.out
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data49.out
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data5.in
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data5.in
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data5.out
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data5.out
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data50.in
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data50.in
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data50.out
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data50.out
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data6.in
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data6.in
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data6.out
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data6.out
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data7.in
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data7.in
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data7.out
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data7.out
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data8.in
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data8.in
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data8.out
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data8.out
(Stored with Git LFS)
Normal file
Binary file not shown.
BIN
S2OJ/162/data/data9.in
(Stored with Git LFS)
Normal file
BIN
S2OJ/162/data/data9.in
(Stored with Git LFS)
Normal file
Binary file not shown.
Some files were not shown because too many files have changed in this diff Show More
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Reference in New Issue
Block a user