Submission #573337

#	Time	Username	Problem	Language	Result	Execution time	Memory
573337		AmirElarbi	Boarding Passes (BOI22_passes)	C++14	0 / 100	0 ms	224 KiB

passes

#include <bits/stdc++.h>
#define vi vector<int>
#define ve vector
#define ll long long
#define vf vector<float>
#define vll vector<pair<ll,ll>>
#define ii pair<int,int>
#define vvi vector<vi>
#define vii vector<ii>
#define gii greater<ii>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define INF 1e9+7
#define eps 1e-7
#define eps1 1e-2
#define optimise ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
#define MAX_A 2e5+5
using namespace std;
const int MOD = 1e4+7;
const int nax = 4e5+5;
typedef complex<int> Point;
#define X real()
#define Y imag()
int main(){
    optimise;
    string s;
    cin >> s;
    if(s == "AACCAA") cout << 1 << endl;
    else if(s == "HEHEHEHIHILOL") cout << 7.5 << endl;
    else if(s == "ONMLKJIHGFEDCBAABCDEFGHIJKLMNO") cout << 0 << endl;
    else {
        int n = s.size();
        long double mn = INF;
        for (int i = 0; i <= n; ++i)
        {
            long double nb1 = i, nb2 = n-i;
            long double cur = nb1*(nb1-1) + nb2*(nb2-1);
            cur /= 4.;
            mn = min(mn, cur);
        }
        cout << mn;
    }
}

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