#include <stdio.h>

int main() {
    int x, y, res;
    
    printf("x = ");
    scanf("%d", &x);
    printf("y = ");
    scanf("%d", &y);
    
    res =(x > 0 && y < 0) ? (x + y) : (x > 0 && y > 1) ? (x/(y-1)) : (x-y);
    printf("f(x,y) = %d", res);
    
    return 0;
}