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Submission #743163

# Submission time Handle Problem Language Result Execution time Memory
743163 2023-05-17T08:29:26 Z vjudge1 Lasers (NOI19_lasers) C++17
0 / 100
 25 ms 948 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;
    int mx = -1;
    for(int i=1;i<=r;++i)
    {
        int n; cin >> n;
        while(n--)
        {
            int len; cin >> len;
            mx = max(mx,len);
        }
    }
    if(mx > l/2) cout << (mx-l/2)*2-1;
    else cout << "0";
    return 0;
}

Compilation message

lasers.cpp: In function 'int main()':
lasers.cpp:10:9: warning: unused variable 'cnt' [-Wunused-variable]
   10 |     int cnt = 0;
      |         ^~~

Subtask #1
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Incorrect 1 ms 296 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Incorrect 1 ms 296 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Incorrect 25 ms 948 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 296 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 25 ms 948 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 304 KB Output is correct
3 Incorrect 1 ms 296 KB Output isn't correct
4 Halted 0 ms 0 KB -