rt.下面是代码

#include <bits/stdc++.h>
using namespace std;
int t,m,a,b,c,xc,fb,cx,cx1;
long double dert;
signed main(){
//	freopen("uqe.in","r",stdin);
//	freopen("uqe.out","w",stdout);
	scanf("%lld%lld",&t,&m);
	while(t--){
		scanf("%lld%lld%lld",&a,&b,&c);
		dert=max(b*b-4*a*c,4*a*c-b*b);
//		cout<<dert<<endl;
		if(a>0){
			fb=b-2*b;
		}
		else{
			fb=b;
		}
		if(b*b-4*a*c<0){
			printf("NO\n");
			continue;
		}
		cx1=1;
		cx=1;
		for(int i=2;dert!=int(dert);i++){
			while(dert*i*i==int(dert*i*i)){
				cx1*=i;
				dert*=(i*i);
			}
		}
		int dert1=dert;
		for(int i=2;i*i<=dert1;i++){
			while(dert1%(i*i)==0){
				cx*=i;
				dert1/=(i*i);
			}
		}
		dert=dert1;
		//cout<<cx<<endl; 
		if(dert==1||dert==0){
			cx=cx*dert+fb;
			xc=abs(2*a);
			for(int i=2;i<=min(abs(xc),abs(cx));i++){
				while(xc%i==0&&cx%i==0){
					xc/=i;
					cx/=i;
				}
			}
			cout<<cx;
			if(cx1*xc!=1&&cx!=0){
				cout<<"/"<<cx1*xc;
			}
			cout<<endl;
		}
		else{
			xc=abs(2*a);
			for(int i=2;i<=min(abs(xc),abs(fb));i++){
				while(xc%i==0&&fb%i==0){
					xc/=i;
					fb/=i;
				}
			}
			if(fb!=0){
				if(xc==1){
					cout<<fb<<"+";
				}
				else{
					cout<<fb<<"/"<<xc<<"+";
				}
			}
			
			xc=abs(2*a);
			for(int i=2;i<=min(abs(xc),abs(cx));i++){
				while(xc%i==0&&cx%i==0){
					xc/=i;
					cx/=i;
				}
			}
			if(cx!=1){
				cout<<cx<<"*";
			}
			cout<<"sqrt("<<dert<<")";
			if(cx1*xc!=1){
				cout<<"/"<<cx1*xc;
			}
			cout<<endl;
		}
	}
	return 0;
}
/*
9 1000
1 -1 0
-1 -1 -1
1 -2 1
1 5 4
4 4 1
1 0 -432
1 -3 1
2 -4 1
1 7 1
*/