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Submission #938522

# Submission time Handle Problem Language Result Execution time Memory
938522 2024-03-05T08:45:39 Z LucaIlie Boarding Passes (BOI22_passes) C++17
0 / 100
 0 ms 436 KB 
#include <bits/stdc++.h>

using namespace std;

double expectedInversions( int n ) {
    return (double)n * (n - 1) / 4;
}

int main() {
    int n;
    string s;

    cin >> s;
    n = s.size();

    cout << expectedInversions( n / 2 ) + expectedInversions( n - n / 2 );

    return 0;
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 436 KB 1st numbers differ - expected: '100800.5000000000', found: '100800.0000000000', error = '0.0000049603'
2 Halted 0 ms 0 KB -

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB 1st numbers differ - expected: '1.0000000000', found: '3.0000000000', error = '2.0000000000'
2 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB 1st numbers differ - expected: '1.0000000000', found: '3.0000000000', error = '2.0000000000'
2 Halted 0 ms 0 KB -

Subtask #4
0 / 40.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 436 KB 1st numbers differ - expected: '100800.5000000000', found: '100800.0000000000', error = '0.0000049603'
2 Halted 0 ms 0 KB -