Submission #875293

#	Time	Username	Problem	Language	Result	Execution time	Memory
875293		12345678	Boarding Passes (BOI22_passes)	C++17	0 / 100	0 ms	348 KiB

passes

#include <bits/stdc++.h>

using namespace std;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    int n;
    cin>>n;
    int k=n/2;
    double res=((double)(k-1)*k)/2;
    //cout<<res<<'\n';
    if (n%2==0) cout<<res;
    else cout<<res+((double)((n+1)/2-1))/2;
}

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