HDU 1576（A/B）

最新推荐文章于 2021-02-24 00:30:01 发布

Intelligence1028

最新推荐文章于 2021-02-24 00:30:01 发布

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文章标签： HDU

原文链接：https://blog.youkuaiyun.com/u010871244/article/details/21472255?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522159360450519195265906253%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=159360450519195265906253&biz_id=0&utm_medi

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#include <iostream>
using namespace std;

void exgcd(int a, int b, int& x, int& y)
{
    if (b == 0)
    {
        x = 1;
        y = 0;
    }
    else 
    {
        exgcd(b, a % b, y, x);
        y -= x * (a / b);
    }
}

int main() 
{
    int T;
    cin >> T;
    while (T--)
    {
        int n, B;
        cin >> n >> B;
        int x, y;
        exgcd(B, 9973, x, y);
        x *= n;
        x = x % 9973;
        if (x < 0) x += 9973;
        cout << x << endl;
    }
    return 0;
}