mirror of
https://git.sb/baoshuo/OI-codes.git
synced 2024-11-10 03:58:47 +00:00
61 lines
1.1 KiB
C++
61 lines
1.1 KiB
C++
|
#include <iostream>
|
||
|
#include <functional>
|
||
|
#include <queue>
|
||
|
#include <utility>
|
||
|
#include <vector>
|
||
|
|
||
|
using std::cin;
|
||
|
using std::cout;
|
||
|
const char endl = '\n';
|
||
|
|
||
|
const int N = 2e5 + 5;
|
||
|
|
||
|
int n, m, v[N];
|
||
|
std::priority_queue<
|
||
|
std::pair<int, int>,
|
||
|
std::vector<std::pair<int, int>>,
|
||
|
std::greater<std::pair<int, int>>>
|
||
|
q[N];
|
||
|
|
||
|
bool assign(int now_time, int id, int use_time, int use) {
|
||
|
// 移除已经完成的任务,释放资源。一定要判非空!
|
||
|
while (!q[id].empty() && q[id].top().first <= now_time) {
|
||
|
v[id] += q[id].top().second;
|
||
|
q[id].pop();
|
||
|
}
|
||
|
|
||
|
if (v[id] < use) { // 算力不足
|
||
|
return false; // 分配失败
|
||
|
}
|
||
|
|
||
|
v[id] -= use;
|
||
|
q[id].emplace(now_time + use_time, use);
|
||
|
|
||
|
return true; // 成功
|
||
|
}
|
||
|
|
||
|
int main() {
|
||
|
std::ios::sync_with_stdio(false);
|
||
|
cin.tie(nullptr);
|
||
|
|
||
|
cin >> n >> m;
|
||
|
|
||
|
for (int i = 1; i <= n; i++) {
|
||
|
cin >> v[i];
|
||
|
}
|
||
|
|
||
|
while (m--) {
|
||
|
int a, b, c, d;
|
||
|
|
||
|
cin >> a >> b >> c >> d;
|
||
|
|
||
|
if (assign(a, b, c, d)) {
|
||
|
cout << v[b] << endl;
|
||
|
} else {
|
||
|
cout << -1 << endl;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return 0;
|
||
|
}
|