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Submission #743024

# Submission time Handle Problem Language Result Execution time Memory
743024 2023-05-17T07:28:34 Z vjudge1 Lasers (NOI19_lasers) C++17
0 / 100
 18 ms 320 KB 
#include<bits/stdc++.h>
using namespace std;

int l,r;

int main()
{
    cin >> l >> r;
    ios_base::sync_with_stdio(0); cin.tie(0);
    int cnt = 0;
    for(int i=1;i<=r;++i)
    {
        int n; cin >> n;
        while(n--)
        {
            int len; cin >> len;
            if(len == 1) ++cnt;
        }
    }
    if(cnt >= l) cout << l << '\n';
    else if(cnt > l/2) cout << cnt-l/2;
    else cout << "0";
    return 0;
}

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 1 ms 212 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 1 ms 212 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 18 ms 320 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 18 ms 320 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 1 ms 212 KB Output isn't correct
3 Halted 0 ms 0 KB -