Submission #642969

#	Time	Username	Problem	Language	Result	Execution time	Memory
642969		devariaota	Lasers (NOI19_lasers)	C++17	0 / 100	1 ms	336 KiB

lasers

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

typedef long long ll;
#define pii pair<int, int>
#define pb push_back
#define nl '\n'

int n, m, a[500005];

int main(){
  ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  cin >> n >> m;
  for(int i=1;i<=m;i++) cin >> a[i];

  int big = *max_element(a+1, a+1+m);
  if(big <= (n-big)) cout << 0 << nl;
  else cout << big - (n - big) << nl;
}

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