제출 #709784

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
709784		aryan12	Boarding Passes (BOI22_passes)	C++17	5 / 100	1 ms	596 KiB

passes

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define double long double

mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());

void Solve() 
{
    string s;
    cin >> s;
    int len = s.size();
    double x = len / 2, y = len - x;
    double ans = x * (x - 1) / 4 + y * (y - 1) / 4;
    cout << fixed << setprecision(10) << ans << "\n";
}

int32_t main() 
{
    auto begin = std::chrono::high_resolution_clock::now();
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t = 1;
    // cin >> t;
    for(int i = 1; i <= t; i++) 
    {
        //cout << "Case #" << i << ": ";
        Solve();
    }
    auto end = std::chrono::high_resolution_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
    cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
    return 0;
}

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