제출 #580110

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
580110		Elias	Boarding Passes (BOI22_passes)	C++17	5 / 100	1 ms	468 KiB

passes

#include <bits/stdc++.h>

#ifndef _DEBUG
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx")
#endif

using namespace std;

#define int int64_t

template <class T>
istream &operator>>(istream &in, vector<T> &v)
{
    for (T &x : v)
        in >> x;
    return in;
}

signed main()
{
    cin.tie(0);
    ios_base::sync_with_stdio(false);

    string s;
    cin >> s;

    int n = s.size();

    double passes = 0;

    for (int i = 0; i < n; i++)
    {
        passes += min(i / 2., (n - i - 1) / 2.);
    }

    cout << setprecision(15) << passes;
}

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