Submission #966060

#	Time	Username	Problem	Language	Result	Execution time	Memory
966060		momo50	Lasers (NOI19_lasers)	C++14	0 / 100	33 ms	1076 KiB

lasers

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int n,m;
    cin>>n>>m;
    int len=0;
    for(int i=0;i<m;i++)
    {
        int k,sum=0;
        cin>>k;
        for(int j=0;j<k;j++)
        {
            int a;
            cin>>a;
            sum+=a;
        }
        len=max(len,sum);
    }
    cout<<2*len-n;
    return 0;
}

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