hdu 2669 Romantic

#include<iostream>
#include<stdio.h>
using namespace std;
long long ext_gcd(long long a,long long  b,long long  *x,long long *y)
{
    if(b==0)
    {
        *x=1;
        *y=0;
        return a;
    }
    long long r = ext_gcd(b,a%b,x,y);
    long long  t = *x;
    *x=*y;
    *y=t - a/b * *y;
    return r;
}
int main()
{

    long long a,b,x,y;
    while(~scanf("%I64d%I64d",&a,&b))
    {
        if(ext_gcd(a,b,&x,&y)==1)
        {
            while(x<0)
            {
                x+=b/1;
                y-=a/1;
            }

            printf("%I64d %I64d\n",x,y);
            continue;
        }
       else printf("sorry\n");
    }
    return 0;
}