Submission #625280

#	Time	Username	Problem	Language	Result	Execution time	Memory
625280		Ooops_sorry	Boarding Passes (BOI22_passes)	C++14	0 / 100	0 ms	212 KiB

passes

#include<bits/stdc++.h>

using namespace std;

mt19937 rnd(51);

#define ll long long
#define pb push_back
#define ld long double

const ld INF = 1e18;

//a * (a - 1) / 4

signed main() {
#ifdef LOCAL
    freopen("input.txt", "r", stdin);
#endif // LOCAL
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    string s;
    cin >> s;
    int n = s.size();
    ld mn = INF;
    for (int i = 1; i < n; i++) {
        mn = min(mn, ((ld)i * (i - 1) + (ld)(n - i) * (n - i - 1)) / 4);
    }
    cout << setprecision(30) << fixed << mn << endl;
    return 0;
}

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