Submission #321874

#	Time	Username	Problem	Language	Result	Execution time	Memory
321874		techiehere08	Lasers (NOI19_lasers)	C++14	0 / 100	50 ms	1004 KiB

lasers

#include<bits/stdc++.h>

using namespace std;

int main(){
  int l, r;
  cin >> l >> r;
  int ans = 0, max = 0;
  for(int i = 0; i < r; i++){
    int n; cin >> n;
    int x, sum = 0;
    while(n--){
      cin >> x;
      sum += x;
    }
    if(max < sum) max = sum;
  }
  if(max % 2) max--;
  ans = 2 * max - l;
  if(ans < 0) ans = 0;
  cout << ans << endl;
  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