Submission #950905

#	Time	Username	Problem	Language	Result	Execution time	Memory
950905		daoquanglinh2007	Potatoes and fertilizers (LMIO19_bulves)	C++17	0 / 100	1 ms	2396 KiB

bulves

#include <bits/stdc++.h>
using namespace std;

#define int long long

const int NM = 5e5;

int N, a[NM+5], b[NM+5], ans = 0;

signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> N;
    for (int i = 1; i <= N; i++){
        cin >> a[i] >> b[i];
    }
    for (int i = 2; i <= N; i++)
        if (a[i-1] > b[i-1]){
            ans += a[i-1]-b[i-1];
            a[i] += a[i-1]-b[i-1];
            a[i-1] = b[i-1];
        }
    for (int i = N-1; i >= 1; i--)
        if (a[i+1] > b[i+1]){
            ans += a[i+1]-b[i+1];
            a[i] += a[i+1]-b[i+1];
            a[i+1] = b[i+1];
        }
    cout << ans;
    return 0;
}

• Subtask 1: 0 / 24
• Subtask 2: 0 / 10
• Subtask 3: 0 / 20
• Subtask 4: 0 / 10
• Subtask 5: 0 / 36