#include<stdio.h>
int main()
{
    int A,B,X;
    char op;
    scanf("%d %c %d",&A,&op,&B);
    if(op=='+')
    {
        X=A+B;
        printf("%d\n",X);
    }
    else if(op=='-')
    {
        X=A-B;
        printf("%d\n",X);
    }
    return 0;
}
