#ZeroJudge a453
from math import sqrt
while True:
try:
times=int(input())
for i in range(times):
a,b,c=list(map(int,input().split()))
if b**2-4*a*c>0 and a!=0:
if sqrt(b**2-4*a*c)==0 or sqrt(b**2-4*a*c)%1==0:
print("Yes")
else:
print("No")
else:
print("No")
except:
break
#ZeroJudge a453
from math import sqrt
while True:
try:
times=int(input())
for i in range(times):
a,b,c=list(map(int,input().split()))
if b**2-4*a*c>0 and a!=0:
if sqrt(b**2-4*a*c)==0 or sqrt(b**2-4*a*c)%1==0:
print("Yes")
else:
print("No")
else:
print("No")
except:
break
第八行改大於等於