Submission #1053480

#TimeUsernameProblemLanguageResultExecution timeMemory
1053480sofijavelkovskaBoarding Passes (BOI22_passes)C++17
5 / 100
1 ms604 KiB
#include <bits/stdc++.h> using namespace std; int main() { ios_base::sync_with_stdio(0); cin.tie(0); string s; cin >> s; int n=s.size(); double x=(int)n/2; double y=(int)(n+1)/2; double answer=(double)x*(x-1)/4+(double)y*(y-1)/4; cout << fixed << setprecision(5) << answer; return 0; }
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