#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
ll t,m,a,b,c,d;
ll hj(ll *x,ll *y){
ll gcd=__gcd(abs(*x),abs(*y));
*x/=gcd,*y/=gcd;
}signed main(){
scanf("%lld %lld",&t,&m);
while(t--){
scanf("%lld %lld %lld",&a,&b,&c);
d=b*b-4*a*c;
if(d<0){printf("NO\n");continue;}
else if(d==0){
ll p=-b,q=2*a;
hj(&q,&p);
if(q<0) q=-q,p=-p;
if(q==1) printf("%lld\n",p);
else printf("%lld/%lld\n",p,q);
}else{
ll p=-b,q=2*a;
ll pf=sqrt(d);
if(pf*pf==d){
if(a>0) p+=pf;
else p-=pf;
hj(&q,&p);
if(q<0) q=-q,p=-p;
if(q==1) printf("%lld\n",p);
else printf("%lld/%lld\n",p,q);
}else{
hj(&p,&q);
if(q<0) q=-q,p=-p;
if(p!=0){
if(q==1) printf("%lld+",p);
else printf("%lld/%lld+",p,q);
}q=abs(2*a);p=1;
ll t;
for(ll i=pf;i>=1;i--){
if(d%(i*i)==0){
p*=i;
t=d/(i*i);
break;
}
}hj(&q,&p);
if(q<0) q=-q,p=-p;
if(p!=1) printf("%lld*",p);
printf("sqrt(%lld)",t);
if(q!=1) printf("/%lld",q);
printf("\n");
}
}
}return 0;
}
到底是为什么呀?