Buggy python submission (verdict: Runtime Error):
c = []
for i in range(3):
  x,y,z = map(int, input().split())
  c.append([x,y,z])

if (c[0][0]-c[1][0]=c[0][1]-c[1][1]=c[0][2]-c[1][2]) and (c[0][0]-c[2][0]=c[0][1]-c[2][1]=c[0][2]-c[2][2]):
  print('Yes')
else:
  print('No')

Fixed submission:
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[2]+c3[1]
e = c1[1]+c2[0]+c3[2]
f = c1[2]+c2[1]+c3[0]
if a==b==c==d==e==f:
  print('Yes')
else:
  print('No')

Buggy python submission (verdict: Runtime Error):
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[2]+c3[1]
e = c1[1]+c2[0]+c3[2]
f = c1[2]+c2[1]+c3[0]
if a=b and b=c and c=d and d=e and e=f:
  print('Yes')
else:
  print('No')


Fixed submission:
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[2]+c3[1]
e = c1[1]+c2[0]+c3[2]
f = c1[2]+c2[1]+c3[0]
if a==b==c==d==e==f:
  print('Yes')
else:
  print('No')

Buggy python submission (verdict: Runtime Error):
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[2]+c3[1]
e = c1[1]+c2[0]+c3[2]
f = c1[2]+c2[1]+c3[0]
if a=b=c=d=e=f:
  print('Yes')
else:
  print('No')


Fixed submission:
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[2]+c3[1]
e = c1[1]+c2[0]+c3[2]
f = c1[2]+c2[1]+c3[0]
if a==b==c==d==e==f:
  print('Yes')
else:
  print('No')

Buggy python submission (verdict: Runtime Error):
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[1]+c3[2]
e = c1[1]+c2[2]+c3[0]
f = c1[2]+c2[0]+c3[1]
if a=b=c=d=e=f:
  print('Yes')
else:
  print('No')


Fixed submission:
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[2]+c3[1]
e = c1[1]+c2[0]+c3[2]
f = c1[2]+c2[1]+c3[0]
if a==b==c==d==e==f:
  print('Yes')
else:
  print('No')

Buggy python submission (verdict: Runtime Error):
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[1]+c3[2]
e = c1[1]+c2[2]+c3[0]
f = c1[2]+c2[0]+c3[1]
if a=b and b=c and c=d and d=e and e=f and f=a:
  print('Yes')
else:
  print('No')


Fixed submission:
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[2]+c3[1]
e = c1[1]+c2[0]+c3[2]
f = c1[2]+c2[1]+c3[0]
if a==b==c==d==e==f:
  print('Yes')
else:
  print('No')

Buggy python submission (verdict: Runtime Error):
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[1]+c3[2]
e = c1[1]+c2[2]+c3[0]
f = c1[2]+c2[0]+c3[1]
if a=b and b=c and c=d and d=e and e=f:
  print('Yes')
else:
  print('No')


Fixed submission:
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[2]+c3[1]
e = c1[1]+c2[0]+c3[2]
f = c1[2]+c2[1]+c3[0]
if a==b==c==d==e==f:
  print('Yes')
else:
  print('No')

Buggy python submission (verdict: Runtime Error):
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
for i in range(6):
  k[i] = c1[i%3]+c2[(i+1)%3]+c3[(i+2)%3]
if k[0]=k[1] and k[1]=k[2] and k[2]=k[3] and k[3]=k[4] and k[4]=k[5]:
  print('Yes')
else:
  print('No')

Fixed submission:
c1 = list(map(int,input().split()))
c2 = list(map(int,input().split()))
c3 = list(map(int,input().split()))
a = c1[0]+c2[1]+c3[2]
b = c1[1]+c2[2]+c3[0]
c = c1[2]+c2[0]+c3[1]
d = c1[0]+c2[2]+c3[1]
e = c1[1]+c2[0]+c3[2]
f = c1[2]+c2[1]+c3[0]
if a==b==c==d==e==f:
  print('Yes')
else:
  print('No')