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Submission #743276

# Submission time Handle Problem Language Result Execution time Memory
743276 2023-05-17T09:22:07 Z vjudge1 Lightning Rod (NOI18_lightningrod) C++17
4 / 100
 1553 ms 13844 KB 
#include <iostream>
#include <unordered_map>
using namespace std;

int main ()
{
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    long long n, a, b, sum = 1, preva;
    cin >> n;
    for(long long i = 0;i < n;++i)
    {
        cin >> a >> b;
        if(i != 0)
        {
            if(a != preva)
                sum++;
        }
        preva = a;
    }
    cout << sum;
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 1267 ms 296 KB Output is correct
2 Correct 1459 ms 13844 KB Output is correct
3 Correct 1361 ms 13528 KB Output is correct

Subtask #2
0 / 7.0

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

Subtask #3
0 / 12.0

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

Subtask #4
0 / 21.0

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

Subtask #5
0 / 26.0

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

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1553 ms 300 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1267 ms 296 KB Output is correct
2 Correct 1459 ms 13844 KB Output is correct
3 Correct 1361 ms 13528 KB Output is correct
4 Incorrect 0 ms 212 KB Output isn't correct
5 Halted 0 ms 0 KB -