#include <stdio.h>
int main(){
    char N;
    int A,B;
    scanf("%d%c%d",&A,&N,&B);
    switch(N) {
        case "+" :
        printf("%d",A+B);
        break;
        case "-" :
        printf("%d",A-B);
        break;
        case "*" :
        printf("%d",A*B);
        break;
        default :
        break;
    };
    return 0;
};