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