Submission #722917

#	Time	Username	Problem	Language	Result	Execution time	Memory
722917		The_Samurai	Boarding Passes (BOI22_passes)	C++17	5 / 100	1 ms	468 KiB

passes

#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2")

#include "bits/stdc++.h"

using namespace std;
using ll = long long;
int INF = 2e9;



void solve() {
    string s;
    cin >> s;
    ll n = s.size() / 2;
    ll ans = (n - 1) * n / 2;
    n = s.size() / 2 + s.size() % 2;
    ans += (n - 1) * n / 2;
    cout << fixed << setprecision(2) << ans / (double)(2);
}

int main() {
    ios_base::sync_with_stdio(false);
    cout.tie(nullptr);
    cin.tie(nullptr);

    int queries = 1;
#ifdef test_cases
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
    cin >> queries;
#else
    //    cin >> queries;
#endif

    for (int test_case = 1; test_case <= queries; test_case++) {
        solve();
//        cout << '\n';
    }
}

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