Submission #988301

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
988301	2024-05-24 12:30:09	pemguimn	Potatoes and fertilizers (LMIO19_bulves)	C++14	100 / 100	139 ms	29128 KiB

bulves

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#include <bits/stdc++.h>
#define int long long
using namespace std;
const int N = 5e5 + 5, INF = 1e18    + 7;
int n, a[N], b[N], d[N], pre[N];
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++) cin >> a[i] >> b[i], d[i] = a[i] - b[i], pre[i] = pre[i - 1] + d[i];
    priority_queue<int> pq;
    int ans = 0;
    for(int i = 1; i <= n - 1; i++){
        pq.push(pre[i]); pq.push(pre[i]);
        ans = ans + abs(max(0LL, min(pq.top(), pre[n])) - pre[i]);
        pq.pop();
    }
    cout << ans << '\n';
    return 0;
}
/*
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2 0
 
 
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• Subtask 1: 24 / 24
• Subtask 2: 10 / 10
• Subtask 3: 20 / 20
• Subtask 4: 10 / 10
• Subtask 5: 36 / 36