#include<bits/stdc++.h> using namespace std; const int N=1e5+10; int main(){ double a,b; cin>>a>>b; double c=a*b; printf("%.2f",c);

return 0;

} [#include<bits/stdc++.h> using namespace std; const int N=1e5+10; int main(){ double a,b; cin>>a>>b; double c=ab; printf("%.2f",c); return 0; }](#include<bits/stdc++.h> using namespace std; const int N=1e5+10; int main(){ double a,b; cin>>a>>b; double c=ab; printf("%.2f",c); return 0; })