#include<stdlib.h>
#include<math.h>

int main()
{
    long long int i,j,n,o,m;
    char a[10];

    while(scanf("%lld %c %lld",&n,&a[0],&m)!=EOF)
    {


    if(a[0]=='+'){printf("%lld\n",n+m);}
    else if(a[0]=='-'){printf("%lld\n",n-m);}

    }
    return 0;
}
