WA on #2 #4 #9 #10 60pts

#include<bits/stdc++.h>
using namespace std;
int aa,bb,cc,t,m,f_son,f_mom;
void f(int a,int b,int c)
{
	int sum=b*b-4*a*c;
	if(sum<0)
	{
		cout<<"NO"<<endl;
		return; 
	}
	int op=sqrt(sum);
	if(op*op==sum)
	{
		if(a>0)
		{
			f_son=op-b,f_mom=2*a;
		}
		else
		{
			f_son=-op-b,f_mom=2*a;
		}
		int g=__gcd(f_son,f_mom);
		int g_son=f_son/g,g_mom=f_mom/g;
		if(g_mom==1)
		{
			cout<<g_son;
		}
		else
		{
			if(g_mom>0)
			{
				cout<<g_son<<"/"<<g_mom;
			}
			else
			{
				cout<<-g_son<<"/"<<-g_mom;
			}
		}
		cout<<endl;
		return;
	}
	int k=sum,s=1,a2=2*a;
	if(a2<0)
	{
	    k=-k;
	}
	for(int i=1;i<=sqrt(k);i++)
	{
		if(k%(i*i)==0)
		{
			k/=(i*i);
			s*=i;
		}
	}
	int q=2*a,p=-b;
	if(q!=0&&p!=0)
	{
		if(q==1)
		{
			cout<<p;
		}
		else
		{
			if(p%q==0)
			{
				cout<<p/q;	
			} 
			else
			{
				if(q>0)
				{
					cout<<p<<"/"<<q;
				}
				else
				{
					cout<<-p<<"/"<<-q;
				}	
			}
		}
		cout<<"+";
	}
	if(s%a2==0&&s/a2==1)
	{
		cout<<"sqrt("<<k<<")"<<endl;
		return;
	}
	if((s/a2)*a2==s)
	{
		cout<<s/a2<<"*sqrt("<<k<<")"<<endl;
		return;
	}
	if(a2%s==0)
	{
		cout<<"sqrt("<<k<<")/"<<a2/s<<endl;
		return;
	}
	int wg=__gcd(a2,s);
	cout<<s/wg<<"*sqrt("<<k<<")/"<<a2/wg<<endl;
	return; 
}
int main()
{
	cin>>t>>m;
	for(int i=1;i<=t;i++)
	{
		cin>>aa>>bb>>cc;
		f(aa,bb,cc);
	}
	return 0;
}

Thanks reading and helping！