只会二次及以下的

#include<bits/stdc++.h>
using namespace std;
const int N=300000;
int n,m;
int e[N],a,b,c,x,x1,x2;
int main(){
	cin>>n>>m;
	if(n==1){
		cin>>a>>b;
		x=-a/b;
		if(x>=1&&x%1==0) cout<<1<<endl<<x;
		else cout<<0;
		return 0;
	}
	if(n=2){
		cin>>c>>b>>a;
		int zoo=b*b-4*a*c;
		if(zoo<0) cout<<0;
		else{
			x1=(-b+sqrt(zoo))/(2*a);
			x2=(-b-sqrt(zoo))/(2*a);
			if(x1>=1&&x2>=1&&x1%1==0&&x2%1==0&&x1<=m&&x1!=x2) cout<<2<<endl<<x2<<endl<<x1;
			else if((x1>=1&&x2<1&&x1%1==0&&x1<=m)||(x1==x2&&x1>=1&&x1<=m&&x1%1==0)) cout<<1<<endl<<x1;
			else cout<<0;
			return 0;
		}
	}
	return 0;
}