oj.uz

Submission #345044

# Submission time Handle Problem Language Result Execution time Memory
345044 2021-01-07T00:10:31 Z nishuz Lightning Rod (NOI18_lightningrod) C++14
4 / 100
 2000 ms 174564 KB 
#include <bits/stdc++.h>

using namespace std;

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n, ans = 0;
    cin >> n;
    vector <pair <int, int>> a(n);
    for (int i = 0; i < n; ++i) cin >> a[i].first >> a[i].second;
    for (int i = 0; i < n; ++i)
    {
        if (a[i].second) ++ans;
        else ans += ((!i || !a[i-1].second) && (i == n-1 || !a[i+1].second));
    }
    cout << ans << '\n';
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1994 ms 76140 KB Output is correct
2 Correct 1882 ms 76012 KB Output is correct
3 Correct 1850 ms 73964 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Incorrect 1 ms 364 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Incorrect 1 ms 364 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Incorrect 1 ms 364 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #5
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Incorrect 1 ms 364 KB Output isn't correct
5 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1952 ms 78316 KB Output is correct
2 Execution timed out 2004 ms 174564 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1994 ms 76140 KB Output is correct
2 Correct 1882 ms 76012 KB Output is correct
3 Correct 1850 ms 73964 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Incorrect 1 ms 364 KB Output isn't correct
8 Halted 0 ms 0 KB -