#include<stdio.h>

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

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


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

}
