Submission #1340799

#	Time	Username	Problem	Language	Result	Execution time	Memory
1340799		Nipphitch	Lasers (NOI19_lasers)	C++20	24 / 100	47 ms	456 KiB

lasers

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

int m,n,mx;

signed main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);
    cin >> m >> n;
    for(int i=1;i<=n;i++){
        int c,sum=0;
        cin >> c;
        for(int j=1;j<=c;j++){
            int x;
            cin >> x;
            sum+=x;
        }
        mx=max(mx,sum);
    }
    cout << max(0LL,mx*2-m);
}

• Subtask 1: 10 / 10
• Subtask 2: 14 / 14
• Subtask 3: 0 / 20
• Subtask 4: 0 / 21
• Subtask 5: 0 / 22
• Subtask 6: 0 / 13