Free Cat~~~ 跳动的喵

#include<cstdio>#include<cstring>#include<cmath>using namespace std;int Exgcd(int a, int b, int &x, int &y){ if(b==0){ x=1, y=0; return a; } int r = Exgcd(b, a%b, x, y);

void Guass(int n){ int ans = 1; For(i, 1, n){ For(j, i + 1, n){ while(a[j][i]){ int t = a[i][i] / a[j][i]; For(k, i, n){ ...