#include<stdio.h>
int main()
{
    int a,b;
    char c;
    scanf("%d %c %d",&a,&c,&b);
    if(c=='+')
    {
        printf("sum %d",a+b);
    }
    else if(c=='-')
    {
        printf("sum %d",a-b);
    }
    else if(c=='*')
    {
        printf("sum %d",a*b);
    }
    else if(c=='-')
    {
        if(b>0)
        {
            printf("sum %d",(float)(a/b));
        }
        else
        {
            printf("Error ");
        }

    }
    return 0;
}