#include <
stdio.h>
int main()
{int a,b,c;
char op;
scanf("%d %d %c",&a,&b,&op);
if(op=='+')c=a+b;
if(op=='-')c=a-b;
if(op=='*')c=a*b;
if(op=='/')if(b!=0)c=a/b;
if(op=='%')if(b!=0)c=a%b;
if(op=='%')c=a+b;
if(b!=0||op!='/'&&op!='/')printf("%d%c%d=%d",a,op,b,c);
else printf("这时b不能为0!\n");
return 0;
}