제출 #603966

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
603966		Ahmadsm2005	Boarding Passes (BOI22_passes)	C++17	5 / 100	1 ms	596 KiB

passes

#include <bits/stdc++.h>
#define int long long
using namespace std;
/*int N,M,V[200001],X,Y;
bool R[200001];
vector<int>edges[200001];
void BFS(int X){
    priority_queue<pair<int,int>>Q;
    int CNT = V[X];
    Q.push({0,X});
    while(Q.size()){
        int F = Q.top().second;
        if(VIS[F])
    }
}*/
int32_t main()
{
    cin.tie(0),iostream::sync_with_stdio(0);
    string s;
    cin>>s;
    long double A = s.size();
    //cin>>A;
    if(s.size()%2)
    cout<<fixed<<setprecision(10)<<((A / 2) * (A / 2 - 1) + 0.25) / 2;
    else
    cout<<fixed<<setprecision(10)<<((A / 2) * (A / 2 - 1)) / 2;
    /*cin>>N>>M;
    for(int i = 0; i < N; i += 1){
        cin>>V[i];
    }
    for(int i = 0; i < M; i += 1){
        cin>>X>>Y;
        edges[X - 1].push_back(Y - 1),edges[Y - 1].push_back(X - 1);
    }
    for(int i = 0; i < N; i += 1){
        BFS(i);
    }
    for(int i = 0; i < N; i += 1)cout<<R[i];*/
}

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