제출 #723213

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
723213		Mr_Husanboy	Boarding Passes (BOI22_passes)	C++17	5 / 100	1 ms	468 KiB

passes

#include<bits/stdc++.h>

using namespace std;
using ll = long long;



void solve(){
    string s; cin >> s;
    int n = s.size();
    if(n == 1){
        cout << 0; return   ;
    }
    long double a = n / 2, b = (n + 1) / 2;
    cout << setprecision(10) << fixed << (a - 1.0) * a / 4.0 + (b - 1.0) * b / 4.0;
}

int main(){
    ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    int testcases = 1;
    //cin >> testcases;
    while(testcases --){
        solve();
        if(testcases) cout << '\n';
        #ifdef LOCAL
        else cout << '\n';
        cout << "___________________" << endl;
        #endif
    }
    return 0;
}

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