#include <iostream>
using namespace std;
int a,b,suma,rejestry[9];
char x;
int main()
{
while(cin>>x)
{
if(x=='z')
{
cin>>a>>b;
rejestry[a]=b;
}
if(x=='+')
{
cin>>a>>b;
suma=rejestry[a]+rejestry[b];
cout<<suma<<endl;
}
if(x=='-')
{
cin>>a>>b;
suma=rejestry[a]-rejestry[b];
cout<<suma<<endl;
}
if(x=='*')
{
cin>>a>>b;
suma=rejestry[a]*rejestry[b];
cout<<suma<<endl;
}
if(x=='/')
{
cin>>a>>b;
suma=rejestry[a]/rejestry[b];
cout<<suma<<endl;
}
if(x=='%')
{
cin>>a>>b;
suma=rejestry[a]%rejestry[b];
cout<<suma<<endl;
}
}
return 0;
}
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