# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
993744 | amine_aroua | Flight to the Ford (BOI22_communication) | C++17 | 0 ms | 0 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include<bits/stdc++.h>
//#pragma GCC optimize("O3")
//#pragma GCC optimize("unroll-loops")
using namespace std;
#define int long long
#define pb push_back
#define fore(i , n) for(int i = 0 ; i<n;i++)
#define forr(i , x , y) for(int i = x ; i <= y; i++)
#define forn(i , x , y) for(int i = x ; i >= y; i--)
#define nl '\n'
signed main() {
ios::sync_with_stdio(0);
cin.tie(0);
cout.tie(0);
double n;
cin>>n;
// string s;
// cin>>s;
// long double n = (double)s.size();
cout<<fixed<<setprecision(5);
cout<<(floor(n / 2) * floor(n / 2))/2<<nl;
}