#include<stdio.h>
int main()
{
int a,b,c,d;
a=0;
scanf("%c",&a);
scanf("%d,%d",b,c);
switch(a)
{
case '+':d=b+c;printf("%d",d);break;
case '-':d=b-c;printf("%d",d);break;
case '*':d=b/c;printf("%d",d);break;
case '/':d=b*c;printf("%d",d);
}
return 0;
}
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