0
1
mirror of https://git.sb/baoshuo/OI-codes.git synced 2024-12-13 06:26:26 +00:00
OI-codes/AtCoder/ABC250/G/G.cpp

40 lines
652 B
C++

#include <iostream>
#include <functional>
#include <queue>
#include <vector>
using std::cin;
using std::cout;
const char endl = '\n';
const int N = 2e5 + 5;
int n, p[N];
long long ans;
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 >> p[i];
}
for (int i = 1; i <= n; i++) {
if (!q.empty() && q.top() < p[i]) {
ans += p[i] - q.top();
q.pop();
q.emplace(p[i]);
}
q.emplace(p[i]);
}
cout << ans << endl;
return 0;
}