#include <iostream>
using namespace std;
int main(int argc, char** argv)
{
float a,b,c,d,e,f,g,h,total_sum,total_sub,total_mul,total_div;
cout<<"input a:"<<endl;
cin>>a;
cout<<"input b:"<<endl;
cin>>b;
total_sum=a+b;
cout<<"total sum:"<<total_sum<<endl;
cout<<"input c:"<<endl;
cin>>c;
cout<<"input d:"<<endl;
cin>>d;
total_sub=c-d;
cout<<"total sub:"<<total_sub<<endl;
cout<<"input e:"<<endl;
cin>>e;
cout<<"input f:"<<endl;
cin>>f;
total_mul=e*d;
cout<<"total mul:"<<total_mul<<endl;
cout<<"input g:"<<endl;
cin>>g;
cout<<"input h:"<<endl;
cin>>h;
total_div=g/h;
cout<<"total div:"<<total_div<<endl;


return 0;
}