mirror of
https://git.sb/baoshuo/OI-codes.git
synced 2024-11-08 15:18:46 +00:00
P2949 [USACO09OPEN] Work Scheduling G
https://www.luogu.com.cn/record/166876962
This commit is contained in:
parent
48e33d2718
commit
723456f05e
51
Luogu/P2949/P2949.cpp
Normal file
51
Luogu/P2949/P2949.cpp
Normal file
@ -0,0 +1,51 @@
|
||||
#include <iostream>
|
||||
#include <algorithm>
|
||||
#include <functional>
|
||||
#include <queue>
|
||||
#include <utility>
|
||||
#include <vector>
|
||||
|
||||
using std::cin;
|
||||
using std::cout;
|
||||
const char endl = '\n';
|
||||
|
||||
const int N = 1e5 + 5;
|
||||
|
||||
int n;
|
||||
long long ans;
|
||||
std::pair<int, int> a[N]; // <time, money>
|
||||
std::priority_queue<int, std::vector<int>, std::greater<>> q;
|
||||
|
||||
int main() {
|
||||
std::ios::sync_with_stdio(false);
|
||||
cin.tie(nullptr);
|
||||
|
||||
cin >> n;
|
||||
|
||||
for (int i = 1; i <= n; i++) {
|
||||
cin >> a[i].first >> a[i].second;
|
||||
}
|
||||
|
||||
std::sort(a + 1, a + 1 + n);
|
||||
|
||||
for (int i = 1; i <= n; i++) {
|
||||
// 时间充足(每项工作消耗 1 个单位时间)
|
||||
if (a[i].first > q.size()) {
|
||||
q.emplace(a[i].second); // 记录报酬
|
||||
ans += a[i].second;
|
||||
} else if (a[i].second > q.top()) { // 时间不足,并且报酬更高
|
||||
|
||||
// 推掉旧工作
|
||||
ans -= q.top();
|
||||
q.pop();
|
||||
|
||||
// 做新的工作
|
||||
q.emplace(a[i].second);
|
||||
ans += a[i].second;
|
||||
}
|
||||
}
|
||||
|
||||
cout << ans << endl;
|
||||
|
||||
return 0;
|
||||
}
|
Loading…
Reference in New Issue
Block a user