Submission #3581126

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;


#define REP(i,n) for(int i=0; i<int(n); i++)
#define FOR(i,m,n) for(int i=int(m); i<int(n); i++)
#define ALL(obj) (obj).begin(),(obj).end()
#define VI vector<int>
#define VLL vector<long long>
#define VVI vector<vector<int>>
#define VC vector<char>
#define VS vector<string>
#define VVS vector<vector<string>>



int main() {
	double n, m;
	cin >> n >> m;
	cout << fixed << setprecision(10) << m * n*n / 10000 << endl;
}

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