#include<bits/stdc++.h>
using namespace std;
char op;
double a1,b1,a2,b2;
void solve(){
    cin>>a1>>b1>>a2>>b2>>op;
    if(op=='+'){
        printf("%.1f %.1f",a1+a2,b1+b2);
    }else if(op=='*'){
        printf("%.1f %.1f",a1*a2-b1*b2,a1*b2+a2*b1);
    }
}


int main(){
    solve();
    return 0;
}