题目链接:点击这里
#include<iostream>
#include<cstdio>
using namespace std;
// 求x, y,使得ax + by = gcd(a, b)
int exgcd(int a, int b, int &x, int &y)
{
if(!b)
{
x = 1, y = 0;
return a;
}
int d = exgcd(b, a % b, y, x);
y -= (a / b) * x;
return d;
}
int main()
{
int n;
scanf("%d", &n);
while(n--)
{
int a, b, x, y;
scanf("%d%d", &a, &b);
exgcd(a, b, x, y);
printf("%d %d\n", x, y);
}
return 0;
}