Submission #1007894

#	Time	Username	Problem	Language	Result	Execution time	Memory
1007894		christinelynn	Lasers (NOI19_lasers)	C++17	24 / 100	47 ms	6064 KiB

lasers

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

signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0);

    int n, q; cin >> n >> q;

    int mx = -1e18;

    while ( q-- ){
        int temp; cin >> temp;
        if ( temp == 1 ){
            int yes; cin >> yes;
            mx =  max ( mx,  max ( 0ll, 2 * yes - n));
        }
    }

    cout << mx << 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