UVA - 11774 - Doom's Day

#include <stdio.h>

int gcd(int x,int y){
    if(y==0)
        return x;
    return gcd(y,x%y);
}

int main() {
    int x, y,cases,i;
    long ans;
       scanf("%d",&cases);
       for(i=1;i<cases+1;i++){
            scanf("%d %d",&x,&y);
            if(x==y)
                ans=2;
            else{
                int temp=gcd(x,y);
                ans=x/temp+y/temp;
            }
            printf("Case %d: %ld\n",i,ans);
          }
    return 0;
}