Submission #875294

#	Time	Username	Problem	Language	Result	Execution time	Memory
875294		12345678	Boarding Passes (BOI22_passes)	C++17	0 / 100	1 ms	604 KiB

passes

#include <bits/stdc++.h>

using namespace std;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    int n;
    string s;
    cin>>s;
    n=s.size();
    int k=n/2;
    double res=((k-1)*k)/2.0;
    if (n%2==0) printf("%.4f", res);
    else printf("%.4f", res+(((n+1)/2-1))/2.0);
}

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