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Submission #722892

# Submission time Handle Problem Language Result Execution time Memory
722892 2023-04-13T04:50:51 Z dxz05 Boarding Passes (BOI22_passes) C++17
5 / 100
 1 ms 596 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
#define all(x) (x).begin(), (x).end()
#define MP make_pair
const int N = 100500;

void solve(){
    string s;
    cin >> s;
    int n = (int)s.size();

    int x = n / 2, y = (n + 1) / 2;

    long double a = (long double) x * (x - 1) / 4;
    long double b = (long double) y * (y - 1) / 4;

    cout << fixed << setprecision(6);
    cout << a + b << endl;

}

int main() {
    ios_base::sync_with_stdio(false);

#ifdef LOCAL
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif

    solve();

    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 316 KB found '100800.5000000000', expected '100800.5000000000', error '0.0000000000'
2 Correct 1 ms 212 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
3 Correct 1 ms 320 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
4 Correct 1 ms 212 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
5 Correct 1 ms 212 KB found '124002.0000000000', expected '124002.0000000000', error '0.0000000000'
6 Correct 1 ms 596 KB found '772893586.0000000000', expected '772893586.0000000000', error '0.0000000000'
7 Correct 1 ms 580 KB found '1100977812.5000000000', expected '1100977812.5000000000', error '0.0000000000'
8 Correct 1 ms 596 KB found '1249950000.5000000000', expected '1249950000.5000000000', error '0.0000000000'
9 Correct 1 ms 588 KB found '1249975000.0000000000', expected '1249975000.0000000000', error '0.0000000000'

Subtask #2
0 / 25.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 320 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 1 ms 320 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 Correct 1 ms 316 KB found '100800.5000000000', expected '100800.5000000000', error '0.0000000000'
2 Correct 1 ms 212 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
3 Correct 1 ms 320 KB found '0.0000000000', expected '0.0000000000', error '-0.0000000000'
4 Correct 1 ms 212 KB found '1.0000000000', expected '1.0000000000', error '0.0000000000'
5 Correct 1 ms 212 KB found '124002.0000000000', expected '124002.0000000000', error '0.0000000000'
6 Correct 1 ms 596 KB found '772893586.0000000000', expected '772893586.0000000000', error '0.0000000000'
7 Correct 1 ms 580 KB found '1100977812.5000000000', expected '1100977812.5000000000', error '0.0000000000'
8 Correct 1 ms 596 KB found '1249950000.5000000000', expected '1249950000.5000000000', error '0.0000000000'
9 Correct 1 ms 588 KB found '1249975000.0000000000', expected '1249975000.0000000000', error '0.0000000000'
10 Incorrect 1 ms 320 KB 1st numbers differ - expected: '1.0000000000', found: '3.0000000000', error = '2.0000000000'
11 Halted 0 ms 0 KB -