#include <iostream>
using namespace std;
int main() {
char a;
float q,w;
while(cin >> q >> w >> a)
{
if ( a=='+' )
cout << q+w << endl;
else if ( a=='-' )
cout << q-w << endl;
else if ( a=='*' )
cout << q*w << endl;
else if ( a=='/' )
{
if ( w==0 )
cout << "MALFORMED" << endl;
else
cout << q/w << endl;
}
else
cout << "MALFORMED" << endl;
}
return 0;
}
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