Submission #674742

#	Time	Username	Problem	Language	Result	Execution time	Memory
674742		QwertyPi	Lasers (NOI19_lasers)	C++14	24 / 100	236 ms	6064 KiB

lasers

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

int32_t main(){
	int l, r; cin >> l >> r;
	int ans = 0;
	for(int i = 0; i < r; i++){
		int k; cin >> k; int s = 0;
		for(int j = 0; j < k; j++){
			int v; cin >> v; s += v;
		}
		ans = max(ans, s * 2 - l);
	}
	cout << ans << endl;
}

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