#include<stdio.h>
int main()
{
    int a,b,i,j,m,n,d;
    char c;
    scanf("%d %c %d",&a,&c,&b);
    if(c=='+')
    {
        d=a+b;
        printf("%d\n",a+b);
    }
    else if(c=='-')
    {
        d=a-b;
        printf("%d\n",d);
    }
    return 0;

}
