Submission #3232023

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Source Code Expand

n,m = map(int,input().split())
lis = [0 for i in range(26)]
for _ in range(n):
  s = list(str(input()))
  for i in range(m):
    lis[ord(str(s[i])) -ord("a")] += 1
if n % 2 == 0 or m % 2 == 0:
  for i in range(26):
    if lis[i] % 2 == 1:
      print("NO")
      exit()
  print("YES")
else:
  cou = 0
  for i in range(26):
    if lis[i] % 2 == 1:
      cou += 1
    if cou > 1:
      print("NO")
      exit()
  print("YES")

Submission Info

Judge Result