Submission #860729

#	Time	Username	Problem	Language	Result	Execution time	Memory
860729		E869120	Boarding Passes (BOI22_passes)	C++14	5 / 100	2 ms	604 KiB

passes

#include <bits/stdc++.h>
using namespace std;

int N;
string S;

int main() {
    // Step 1. Input
    cin >> S;
    N = S.size();

    // Step 2. Calculate
    double Answer = 0.0;
    for (int i = 0; i < N; i++) {
        Answer += 0.5 * min(i, N - 1 - i);
    }
    printf("%.12lf\n", Answer);
    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 0 / 25
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40