#include <iostream>
using namespace std;
int main()
{
int a,b;
int rejestry[10];
char znak;
while (cin>>znak)
{
if (znak=='+')
{
cin>>a>>b;
cout<<rejestry[a]+rejestry[b]<<endl;
}
if (znak=='-')
{
cin>>a>>b;
cout<<rejestry[a]-rejestry[b]<<endl;
}
if (znak=='*')
{
cin>>a>>b;
cout<<rejestry[a]*rejestry[b]<<endl;
}
if (znak=='/')
{
cin>>a>>b;
cout<<rejestry[a]/rejestry[b]<<endl;
}
if (znak=='%')
{
cin>>a>>b;
cout<<rejestry[a]%rejestry[b]<<endl;
}
if (znak=='z')
{
cin>>a>>b;
rejestry[a]=b;
}
}
return 0;
}
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