#include<stdio.h>

int main()
{
    long int a,c;
    char s;

    while     (scanf("%ld %c %ld",&a,&s,&c) != EOF)


    {
        switch(s)
        {
        case '+':
            printf("%ld",a+c);
            break;
        default :
            printf("%ld",a-c);
        }
    }
    return 0;

}
