RoboContest

A
10
B
10
C
10
D
10
E
10
F
10
G
10
H
10
I
10
J
10
K
10
L
10
M
10
N
10
O
10
P
10
Q
10
R
10
S
10
T
10
U
10
V
10
W
10
X
10
Y
10
Z
10
AA
10
AB
10
AC
10
AD
10
AE
10
AF
10
AG
10
AH
10
AI
10
AJ
10
AK
10
AL
10
AM
10
AN
10

Masala #WVD6BJKSYT

Xotira 16 MB Vaqt 1000 ms
14
Muallif: Otabek Aralov Abduxamitovich

Boolean #24

A, B, C butun sonlar beilgan (A soni noldan farqli). \(D=B^2-4AC\) diskerminantdan foydalanib, jumlani rostlikka tekshiring: “ \(Ax^2+Bx+C=0\)kvadrat tenglama haqiqiy ildizga ega".

Kiruvchi ma'lumotlar:

Yagona qatorda A, B, C butun sonlar kiritiladi. \((-100≤A,B,C≤100)\)

Chiquvchi ma'lumotlar:

Agar natija shartga mos bo'lsa “ROST” aks holda “YOLG'ON” so'zini chop eting.

Misollar
# input.txt output.txt
1 
2 -4 -3
 
ROST
2 
1 5 2
 
ROST
3 
-1 -2 -3
 
YOLG'ON

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