# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
1163404 | YSH2020 | Ekoeko (COCI21_ekoeko) | C++20 | 0 ms | 328 KiB |
#include <bits/stdc++.h>
using namespace std;
int main() {
long long n; cin >> n;
long long ans = (n*n)/4;
cout << ans;
}
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