qyliang/CodeNanoFix huggingface dataset:
Buggy code:
import sys
stdin = sys.stdin

ni = lambda: int(ns())
na = lambda: list(map(int, stdin.readline().split()))
nn = lambda: list(stdin.readline().split())
ns = lambda: stdin.readline().rstrip()

from collections import Counter

h,w = na()
c = Counter()

for i in range(h):
    c.update(ns())

c = list(c.values())

for i in range(len(c)):
    c[i] %= 4

print(c)
v,x,y,z = c.count(0),c.count(1),c.count(2),c.count(3)

if x+z > 1:
    print('No')
else:
    a = y+z
    if h%2 == 1:
        a -= w//2
    if w%2 == 1:
        a -= h//2
    if a <= 0:
        print('Yes')
    else:
        print('No')

Fixed code:
import sys
stdin = sys.stdin

ni = lambda: int(ns())
na = lambda: list(map(int, stdin.readline().split()))
nn = lambda: list(stdin.readline().split())
ns = lambda: stdin.readline().rstrip()

from collections import Counter

h,w = na()
c = Counter()

for i in range(h):
    c.update(ns())

c = list(c.values())

for i in range(len(c)):
    c[i] %= 4

v,x,y,z = c.count(0),c.count(1),c.count(2),c.count(3)

if x+z > 1:
    print('No')
else:
    a = y+z
    if h%2 == 1:
        a -= w//2
    if w%2 == 1:
        a -= h//2
    if a <= 0:
        print('Yes')
    else:
        print('No')
Buggy code:
from collections import Counter

H, W = map(int, input().split())

raw = ""
for i in range(H):
    raw = raw + input()
#words = Counter(list(raw))

print(words)
if H*W % 2 == 1:
    flag = 0
    two_sum = (H-1) + (W-1)
elif H%2 == 1:
    flag = 1
    two_sum = W
elif W%2 == 1:
    flag = 1
    two_sum = H
else:
    flag = 1
    two_sum = 0

for value in words.values():
    if value % 2 == 1:
        flag += 1
    if flag > 1:
        print("No")
        break

if flag < 2 and two_sum > -1:
    for key, value in words.items():
        N_key = value
        while N_key > 0:
            if 1 < N_key < 4:
                N_key -= 2
                two_sum -= 2
            else:
                N_key -= 4

if flag < 2 and two_sum > -1:
    print("Yes")
elif two_sum < 0:
    print("No")


Fixed code:
from collections import Counter

H, W = map(int, input().split())

raw = ""
for i in range(H):
    raw = raw + input()
words = Counter(list(raw))

if H*W % 2 == 1:
    flag = 0
    two_sum = (H-1) + (W-1)
elif H%2 == 1:
    flag = 1
    two_sum = W
elif W%2 == 1:
    flag = 1
    two_sum = H
else:
    flag = 1
    two_sum = 0

for value in words.values():
    if value % 2 == 1:
        flag += 1
    if flag > 1:
        print("No")
        break

if flag < 2 and two_sum > -1:
    for key, value in words.items():
        N_key = value
        while N_key > 0:
            if 1 < N_key < 4:
                N_key -= 2
                two_sum -= 2
            else:
                N_key -= 4

if flag < 2 and two_sum > -1:
    print("Yes")
elif two_sum < 0:
    print("No")
Buggy code:
H,W=map(int,input().split())
D={chr(code): 0 for code in range(ord('a'), ord('z') + 1)}
for i in range(H):
  A=list(input())
  for i in A:
    D[i]+=1
if H%2==0 and W%2==0:
  for i in D.values():
    if i%4!=0:
      print('No')
      exit()
  print('Yes')
elif H%2==1 and W%2==1:
  E=[]
  for i in D.values():
    if i%4!=0:
      E.append(i%4)
  E=sorted(E)
  a=H+W-1
  if (a+1)//2<len(E):
    print('No')
    exit()
  for i in range(a//2+1):
    if E==[1]+[2]*i:
      print('Yes')
      exit()
  print('No')
else:
  E=[]
  for i in D.values():
    if i%4!=0:
      E.append(i%4)
  E=sorted(E)
  if H%2==1:
    a=W
  else:
    a=H
  print(E)
  if a//2<len(E):
    print('No')
    exit()
  for i in range(a):
    if E==[2]*(2*i):
      print('Yes')
      exit()
  print('No')

Fixed code:
H,W=map(int,input().split())
D={chr(code): 0 for code in range(ord('a'), ord('z') + 1)}
for i in range(H):
  A=list(input())
  for i in A:
    D[i]+=1
if H%2==0 and W%2==0:
  for i in D.values():
    if i%4!=0:
      print('No')
      exit()
  print('Yes')
elif H%2==1 and W%2==1:
  E=[]
  for i in D.values():
    if i%4!=0:
      E.append(i%4)
  E=sorted(E)
  a=H+W-1
  if H==1 or W==1:
    for i in range(a//2+1):
      if E==[1]+[2]*i:
        print('Yes')
        exit()
    print('No')
    exit()    
  if (a+1)//2 <len(E):
    print('No')
    exit()
  for i in range(a//2+2):
    if E==[1]+[2]*i:
      print('Yes')
      exit()
  print('No')
else:
  E=[]
  for i in D.values():
    if i%4!=0:
      E.append(i%4)
  E=sorted(E)
  if H%2==0:
    a=H
  else:
    a=W
  if a//2 <len(E):
    print('No')
    exit()
  for i in range(a//2+1):
    if E==[2]*i:
      print('Yes')
      exit()
  print('No')
Buggy code:
from collections import Counter
h,w=map(int,input().split())
cnt=Counter()
for i in range(h):
  c=Counter(input())
  cnt+=c
sum1=0
sum2=0
sum4=0
for i in cnt.values():
  sum4+=i//4
  sum2+=(i-sum4*4)//2
  sum1+=i-sum4*4-sum2*2
if h%2==0 and w%2==0:
  print('Yes' if sum1==0 and sum2==0 else 'No')
elif h%2==1 and w%2==1:
  print('Yes' if sum1==1 and sum4>=((w-1)*(h-1))/4 else 'No')
elif h%2==1 and w%2==0:
  print('Yes' if sum1==0 and sum2<=w/2 else 'No')
else:
  print('Yes' if sum1==0 and sum2<=h/2 else 'No')

Fixed code:
from collections import Counter
h,w=map(int,input().split())
cnt=Counter()
for i in range(h):
  c=Counter(input())
  cnt+=c
sum1=0
sum2=0
sum4=0
for i in cnt.values():
  sum1+=i%2
  sum4+=i//4
  sum2+=(i-(i//4)*4)//2
if h%2==0 and w%2==0:
  print('Yes' if sum1==0 and sum2==0 else 'No')
elif h%2==1 and w%2==1:
  print('Yes' if sum1==1 and sum4>=((w-1)*(h-1))/4 else 'No')
elif h%2==1 and w%2==0:
  print('Yes' if sum1==0 and sum2<=w/2 else 'No')
else:
  print('Yes' if sum1==0 and sum2<=h/2 else 'No')
Buggy code:

import numpy as np
import sys
sys.setrecursionlimit(100000)


def acinput():
    return list(map(int, input().split(" ")))



H, W = acinput()

# d=[0]*26
d = {}

for i in range(H):

    tmp = list(input())
    for c in tmp:
        try:
            d[c] += 1
        except:
            d[c] = 1
mod2 = mod4 = 0

for k in d:
    if d[k] % 4 == 0:
        mod4 += d[k]
    elif d[k] % 2 == 0:
        mod2 += d[k]


nodd = H % 2+W % 2

am=H%2
bm=W%2

res = False
if am==0 and bm==0:
    resid4 = np.floor((H)*(W))-mod4
    A2=0
elif am==0 and bm==1:
    resid2 = np.floor(W-1)-mod2
    resid4 = np.floor((H-1)*(W))-mod4
    A2=H
elif am==1 and bm==0:
    resid2 = np.floor(W-1)-mod2    
    resid4=np.floor((H-1)*(W))-mod4
    A2=W
else:
    resid2 = np.floor(W-1)+H-1-mod2
    resid4 = np.floor((H-1)*(W-1))-mod4
    A2=W+H-2

#print(A2)
if resid4 > 0:    
    mod2 -= resid4
else:
    mod2+=resid4
if mod2>=A2:
    res=True

if res:
    print("Yes")
else:
    print("No")


Fixed code:

import numpy as np
import sys
sys.setrecursionlimit(100000)


def acinput():
    return list(map(int, input().split(" ")))



H, W = acinput()

# d=[0]*26
d = {}

for i in range(H):

    tmp = list(input())
    for c in tmp:
        try:
            d[c] += 1
        except:
            d[c] = 1
mod2 = mod4 = 0

mod1=0
for k in d:
    if d[k] % 4 == 0:
        mod4 += 1
    elif d[k] % 2 == 0:
        mod2 += 1
    elif d[k]%2==1:
        mod1+=1


am=H%2
bm=W%2

A1=0

if am==0 and bm==0:
    resid4 = np.floor((H)*(W))-mod4
    A2=0
elif am==0 and bm==1:
    resid2 = np.floor(W-1)-mod2
    resid4 = np.floor((H-1)*(W))-mod4
    A2=H//2
elif am==1 and bm==0:
    resid2 = np.floor(W-1)-mod2    
    resid4=np.floor((H-1)*(W))-mod4
    A2=W//2
else:
    resid2 = np.floor(W-1)+H-1-mod2
    resid4 = np.floor((H-1)*(W-1))-mod4
    A2=(W+H-2)//2
    A1=1

#print(resid4,mod2)

res = False

#print(A2,mod2)
if A2>=mod2 and A1>=mod1:
    res=True

if res:
    print("Yes")
else:
    print("No")
Buggy code:
from collections import Counter 

a,b = map(int,input().split())
l = ''
for i in range(a):
    t = input()
    l+=t

c = Counter(list(l))
# print(c)
dp = [0,0,0]
for i in c:
    if c[i]%2 ==1:
        dp[0] +=1
    elif c[i]%4 == 0:
        dp[2] += 1
    elif c[i]%2 == 0:
        dp[1] += 1
# print(dp)
ans = 'No'
if a%2 ==1 and b%2 ==1:
    A = 1
    B = (a+b-2)//2
A = 0
elif  a%2 ==0 and b%2 ==0:
    B= 0
elif a%2 ==0 and b%2 ==1:
    B = a//2
else:
    B= b//2
if A >= dp[0] and B >= dp[1]:
    ans = 'Yes'
print(ans)


Fixed code:
from collections import Counter 

a,b = map(int,input().split())
l = ''
for i in range(a):
    t = input()
    l+=t

c = Counter(list(l))
# print(c)
dp = [0,0,0]
for i in c:
    if c[i]%2 ==1:
        dp[0] +=1
    elif c[i]%4 == 0:
        dp[2] += 1
    elif c[i]%2 == 0:
        dp[1] += 1
# print(dp)
ans = 'No'
if a%2 ==1 and b%2 ==1:
    A = 1
    B = (a+b-2)//2
    if A >= dp[0] and B >= dp[1]:
        ans = 'Yes'
elif  a%2 ==0 and b%2 ==0:
    A = 0
    B= 0
    if A >= dp[0] and B >= dp[1]:
        ans = 'Yes'
elif a%2 ==0 and b%2 ==1:
    A = 0
    B = a//2
    if A >= dp[0] and B >= dp[1]:
        ans = 'Yes'
else:
    A=0
    B= b//2
    if A >= dp[0] and B >= dp[1]:
        ans = 'Yes'
print(ans)
Buggy code:
H, W = map(int, input().split())
A = [input() for _ in range(H)]

def check(n4, n2):
  for a in alpha:
    while a >= 4:
      a -= 4
      n4 -= 1
      if n4 == 0:
        break
    if n4 == 0:
      break

  for a in alpha:
    while a >= 2:
      a -= 2
      n2 -= 1
      if n2 == 0:
        break
    if n2 == 0:
      break
  if n4 == n2 == 0:
    print("Yes")
  else:
    print("No")      

alpha = [0] * 27
for i in range(H):
  for j in range(W):
    alpha[ord(A[i][j]) - ord("a")] += 1
#print(alpha)

if H % 2 and W % 2:
  n4 = (H * W - (H + W) + 1) // 4
  n2 = (H + W - 2) // 2
elif H % 2 == 0 and W % 2 == 0:
  n4 = H * W // 4
  n2 = 0
else:
  if H % 2:
    H, W = W, H
  n4 = (W - 1) * H //4
  n2 = H // 2

#print(n4, n2)
check(n4, n2)

Fixed code:
H, W = map(int, input().split())
A = [input() for _ in range(H)]

def check(n4, n2):

  for i in range(27):
    if n4 == 0:
      break
    while alpha[i] >= 4:
      alpha[i] -= 4
      n4 -= 1
      if n4 == 0:
        break

  for i in range(27):
    if n2 == 0:
      break
    while alpha[i] >= 2:
      alpha[i] -= 2
      n2 -= 1
      if n2 == 0:
        break
      
  if n4 == 0 and n2 == 0:
    print("Yes")
  else:
    print("No")      

alpha = [0] * 27
for i in range(H):
  for j in range(W):
    alpha[ord(A[i][j]) - ord("a")] += 1

if H % 2 and W % 2:
  n4 = (H * W - (H + W) + 1) // 4
  n2 = (H + W - 2) // 2
elif H % 2 == 0 and W % 2 == 0:
  n4 = H * W // 4
  n2 = 0
else:
  if H % 2:
    H, W = W, H
  n4 = (W - 1) * H // 4
  n2 = H // 2
check(n4, n2)
Buggy code:
H,W=map(int,input().split())
a=[]

for i in range(H):
    a.extend(list(input()))

b=[0]*26
abc="abcdefghijklmnopqrstuvwxyz"

for i in a:
    b[abc.index(i)]+=1

if max(b)==H*W:
    print("Yes")
    exit()

if H==2 and W==2:
    if max(b)!=4:
        print("No")
        exit()


num_odd=0
num_4=0
num_2=0

for i in range(26):
    if b[i]%4!=0:
        if b[i]%2==1:
            if num_odd!=0:
                print("No")
                exit()
            else:
                num_odd=b[i]
        else:
            num_4+=4*(b[i]//4)
            num_2+=b[i]%4

if H%2==0 and W%2==0:
    if num_odd!=0 or num_2!=0:
        print("No")
    else:
        print("Yes")
elif H%2==1 and W%2==0:
    if num_4-(H-1)*W>=0 and num_4-(H-1)*W+num_2==W:
        print("Yes")
    else:
        print("No")
elif H%2==0 and W%2==1:
    if num_4-(W-1)*H>=0 and num_4-(W-1)*H+num_2==H:
        print("Yes")
    else:
        print("No")
elif H%2==1 and W%2==1:
    if num_4+4*(num_odd//4)>=(H-1)*(W-1):
        print("Yes")
    else:print("No")

Fixed code:
H,W=map(int,input().split())
a=[]

for i in range(H):
    a.extend(list(input()))

b=[0]*26
abc="abcdefghijklmnopqrstuvwxyz"

for i in a:
    b[abc.index(i)]+=1

if max(b)==H*W:
    print("Yes")
    exit()


num_odd=0
num_4=0
num_2=0

for i in range(26):
    if b[i]%4!=0:
        if b[i]%2==1:
            if num_odd!=0:
                print("No")
                exit()
            else:
                num_odd=b[i]
        else:
            num_4+=4*(b[i]//4)
            num_2+=b[i]%4
    else:
        num_4+=b[i]

if H%2==0 and W%2==0:
    if num_odd!=0 or num_2!=0:
        print("No")
    else:
        print("Yes")
elif H%2==1 and W%2==0:
    if num_4-(H-1)*W>=0 and num_4-(H-1)*W+num_2==W:
        print("Yes")
    else:
        print("No")
elif H%2==0 and W%2==1:
    if num_4-(W-1)*H>=0 and num_4-(W-1)*H+num_2==H:
        print("Yes")
    else:
        print("No")
elif H%2==1 and W%2==1:
    if num_4+4*(num_odd//4)>=(H-1)*(W-1):
        print("Yes")
    else:print("No")
Buggy code:
def examC():
    H, W = LI()
    A = [SI() for _ in range(H)]
    d = defaultdict(int)
    ans = "Yes"
    for a in A:
        for s in a:
            d[s] +=1
#    print(d)
    h = H//2; w = W//2; k = h*w
    for key,i in d.items():
        while(i>=4):
            d[key]-=4
            k -=1
            if k == 0:
                break
        if k == 0:
            break
    if k>0:
        ans = "No"
#    print(d,k)
    k = 0
    if H%2==1:
        k +=w
    if W%2==1:
        k +=h
    for key,i in d.items():
        while(i>=2):
            d[key] -= 2
            k -= 1
            if k == 0:
                break
        if k ==0:
            break
    if k>0:
        ans = "No"
#    print(d,k)
    print(ans)

import sys,copy,bisect,itertools,heapq,math
from heapq import heappop,heappush,heapify
from collections import Counter,defaultdict,deque
def I(): return int(sys.stdin.readline())
def LI(): return list(map(int,sys.stdin.readline().split()))
def LSI(): return list(map(str,sys.stdin.readline().split()))
def LS(): return sys.stdin.readline().split()
def SI(): return sys.stdin.readline().strip()
mod = 10**9 + 7
inf = float('inf')

if __name__ == '__main__':
    examC()


Fixed code:
def examC():
    H, W = LI()
    A = [SI() for _ in range(H)]
    d = defaultdict(int)
    ans = "Yes"
    for a in A:
        for s in a:
            d[s] +=1
#    print(d)
    h = H//2; w = W//2; k = h*w
    for key,i in d.items():
        if k == 0:
            break
        while(d[key]>=4):
            d[key]-=4
            k -=1
            if k == 0:
                break
    if k>0:
        ans = "No"
#    print(d,k)
    k = 0
    if H%2==1:
        k +=w
    if W%2==1:
        k +=h
    for key,i in d.items():
        if k ==0:
            break
        while(d[key]>=2):
            d[key] -= 2
            k -= 1
            if k == 0:
                break
    if k>0:
        ans = "No"
#    print(d,k)
    print(ans)

import sys,copy,bisect,itertools,heapq,math
from heapq import heappop,heappush,heapify
from collections import Counter,defaultdict,deque
def I(): return int(sys.stdin.readline())
def LI(): return list(map(int,sys.stdin.readline().split()))
def LSI(): return list(map(str,sys.stdin.readline().split()))
def LS(): return sys.stdin.readline().split()
def SI(): return sys.stdin.readline().strip()
mod = 10**9 + 7
inf = float('inf')

if __name__ == '__main__':
    examC()
Buggy code:
H,W = map(int,input().split())
dic = {}
for h in range(H):
  s = list(input())
  for x in s:
    dic[x] = dic.get(x,0) + 1

c1 = 0
c2 = 0
for x in dic.values():
  if x%2 == 1:
    c1 += 1
    x -= 1
  if x%4 == 2:
    c2 += 1
if c1>(H%2)*(W%2):
  print("No")
  return
if c2>((W*(H%2))//2)+((H*(W%2))//2):
  print("No")
  return
print("Yes")

Fixed code:
H,W = map(int,input().split())
dic = {}
for h in range(H):
  s = list(input())
  for x in s:
    dic[x] = dic.get(x,0) + 1

c1 = 0
c2 = 0
for x in dic.values():
  if x%2 == 1:
    c1 += 1
    x -= 1
  if x%4 == 2:
    c2 += 1
if c1>(H%2)*(W%2):
  print("No")
elif c2>((W*(H%2))//2)+((H*(W%2))//2):
  print("No")
else:
  print("Yes")
Buggy code:
H, W = map(int, input().split())
ns = {}
for i in range(H):
  As = input()
  for a in As:
    if a not in ns: ns[a] = 0
    ns[a] += 1
ns4 = [0, 0, 0, 0]
for a in ns:
  n = ns[a]
  ns4[n%4] += 1
print(ns4)
if H%2 == 0 and W%2 == 0:
  if ns4[1] > 0 or ns4[2] > 0 or ns4[3] > 0:
    print("No")
  else:
    print("Yes")
if H%2 == 1 and W%2 == 0:
  if ns4[1]+ns4[3] > 0:
    print("No")
  elif ns4[2] > W//2:
    print("No")
  else:
    print("Yes")
if H%2 == 0 and W%2 == 1:
  if ns4[1]+ns4[3] > 0:
    print("No")
  elif ns4[2] > H//2:
    print("No")
  else:
    print("Yes")
if H%2 == 1 and W%2 == 1:
  if ns4[1]+ns4[3] > 1:
    print("No")
  elif ns4[2]+ns4[3] > H//2+W//2:
    print("No")
  else:
    print("Yes")


Fixed code:
H, W = map(int, input().split())
ns = {}
for i in range(H):
  As = input()
  for a in As:
    if a not in ns: ns[a] = 0
    ns[a] += 1
ns4 = [0, 0, 0, 0]
for a in ns:
  n = ns[a]
  ns4[n%4] += 1
#print(ns4)
if H%2 == 0 and W%2 == 0:
  if ns4[1] > 0 or ns4[2] > 0 or ns4[3] > 0:
    print("No")
  else:
    print("Yes")
if H%2 == 1 and W%2 == 0:
  if ns4[1]+ns4[3] > 0:
    print("No")
  elif ns4[2] > W//2:
    print("No")
  else:
    print("Yes")
if H%2 == 0 and W%2 == 1:
  if ns4[1]+ns4[3] > 0:
    print("No")
  elif ns4[2] > H//2:
    print("No")
  else:
    print("Yes")
if H%2 == 1 and W%2 == 1:
  if ns4[1]+ns4[3] > 1:
    print("No")
  elif ns4[2]+ns4[3] > H//2+W//2:
    print("No")
  else:
    print("Yes")
Buggy code:
H,W=map(int,input().split())
A=[[int(j) for j in input().split()] for _ in range(H)]
from collections import defaultdict
d=defaultdict(int)
for a in A:
  for j in a:
    d[j]+=1

four=0
two=0
one=0

for i in  range(26):
  c=chr(ord("a")+i)
  if d[c]>=4:
    four+=d[c]//4 
    d[c]%=4
  if d[c]>=2:
    two+=d[c]//2
    d[c]%=2
  if d[c]>=1:
    one+=d[c]
    d[c]-=1
    
if four<=(H//2)*(W//2):    
  print("No")
  exit(0)
four-=(H//2)*(W//2)
two+=four*2

if H%2==1:
  if two < W//2:
    print("No")
    exit()
  two-=W//2
if W%2==1:
  if two <H//2:
    print("No")
    exit()
  two-=H//2

print("Yes")
  

Fixed code:
H,W=map(int,input().split())
A=[input() for _ in range(H)]
from collections import defaultdict
d=defaultdict(int)
for a in A:
  for j in a:
    #print("j: ",j)
    d[j]+=1

four=0
two=0
one=0

for i in  range(26):
  c=chr(ord("a")+i)
  if d[c]>=4:
    four+=d[c]//4 
    d[c]%=4
  if d[c]>=2:
    two+=d[c]//2
    d[c]%=2
  if d[c]>=1:
    one+=d[c]
    d[c]-=1

if four<(H//2)*(W//2):    
  print("No")
  exit(0)
four-=(H//2)*(W//2)
two+=four*2

if H%2==1:
  if two < W//2:
    print("No")
    exit()
  two-=W//2
if W%2==1:
  if two <H//2:
    print("No")
    exit()
  two-=H//2

print("Yes")
Buggy code:
H, W = [int(_) for _ in input().split()]
memo = {}
for _ in range(H):
    for _ in input():
        memo[_] = memo.get(_, 0) + 1
count = [0] * 4
for k, v in memo.items():
    v %= 4
    count[v % 4] += 1
ans = 'No'
if H * W % 2:
    if count[1] + count[3] == 1 and 2 * (count[2] + count[3]) == H + W - 2:
        ans = 'Yes'
elif H % 2:
    if count[1] == count[3] == 0 and 2 * (count[2] + count[3]) <= H:
        ans = 'Yes'
elif W % 2:
    if count[1] == count[3] == 0 and 2 * (count[2] + count[3]) <= W:
        ans = 'Yes'
else:
    if count[1] == count[2] == count[3] == 0:
        ans = 'Yes'
print(ans)


Fixed code:
H, W = [int(_) for _ in input().split()]
memo = {}
for _ in range(H):
    for _ in input():
        memo[_] = memo.get(_, 0) + 1
count = [0] * 4
for k, v in memo.items():
    count[v % 4] += 1
ans = 'No'
if H * W % 2:
    if count[1] + count[3] == 1 and 1 + 2 * count[2] <= H + W - 1:
        ans = 'Yes'
elif H % 2:
    if count[1] == count[3] == 0 and 2 * count[2] <= W and (
            W - 2 * count[2]) % 4 == 0:
        ans = 'Yes'
elif W % 2:
    if count[1] == count[3] == 0 and 2 * count[2] <= H and (
            H - 2 * count[2]) % 4 == 0:
        ans = 'Yes'
else:
    if count[1] == count[2] == count[3] == 0:
        ans = 'Yes'
print(ans)
Buggy code:
import sys
stdin = sys.stdin

def li(): return map(int, stdin.readline().split())
def li_(): return map(lambda x: int(x)-1, stdin.readline().split())
def lf(): return map(float, stdin.readline().split())
def ls(): return stdin.readline().split()
def ns(): return stdin.readline().rstrip()
def lc(): return list(ns())
def ni(): return int(stdin.readline())
def nf(): return float(stdin.readline())

from collections import Counter

h,w = li()

cnt = Counter([])
for _ in range(h):
    tmp = lc()
    for c in tmp:
        cnt[c] += 1

print(cnt)
exist = True

if h%2 == 0 and w%2 == 0:
    for key,value in cnt.items():
        if value%4 != 0:
            exist = False
            break
        
elif h%2 == 1 and w%2 == 1:
    odd = 0
    mod4_2 = 0
    for key,value in cnt.items():
        if value % 2 == 1:
            odd += 1
        elif value % 4 == 2:
            mod4_2 += 1
            
    if odd > 1:
        exist = False
    elif mod4_2 > (h+w-2)//2:
        exist = False
        
else:
    odmax = 0
    if h%2 == 0:
        odmax = h//2
    else:
        odmax = w//2
        
    
    mod4_2 = 0
    for key, value in cnt.items():
        if value%2 != 0:
            exist = False
            break
        elif value%4 == 2:
            mod4_2 +=1
            
    if mod4_2 > odmax:
        exist = False
        
        
if exist:
    print("Yes")
else:
    print("No")

Fixed code:
import sys
stdin = sys.stdin

def li(): return map(int, stdin.readline().split())
def li_(): return map(lambda x: int(x)-1, stdin.readline().split())
def lf(): return map(float, stdin.readline().split())
def ls(): return stdin.readline().split()
def ns(): return stdin.readline().rstrip()
def lc(): return list(ns())
def ni(): return int(stdin.readline())
def nf(): return float(stdin.readline())

from collections import Counter

h,w = li()

cnt = Counter([])
for _ in range(h):
    tmp = lc()
    for c in tmp:
        cnt[c] += 1

exist = True

if h%2 == 0 and w%2 == 0:
    for key,value in cnt.items():
        if value%4 != 0:
            exist = False
            break
        
elif h%2 == 1 and w%2 == 1:
    odd = 0
    mod4_2 = 0
    for key,value in cnt.items():
        if value % 2 == 1:
            odd += 1
        elif value % 4 == 2:
            mod4_2 += 1
            
    if odd > 1:
        exist = False
    elif mod4_2 > (h+w-2)//2:
        exist = False
        
else:
    odmax = 0
    if h%2 == 0:
        odmax = h//2
    else:
        odmax = w//2
        
    
    mod4_2 = 0
    for key, value in cnt.items():
        if value%2 != 0:
            exist = False
            break
        elif value%4 == 2:
            mod4_2 +=1
            
    if mod4_2 > odmax:
        exist = False
        
        
if exist:
    print("Yes")
else:
    print("No")
Buggy code:
# coding: utf-8
h,w=map(int,input().split())
dic={}
for i in range(h):
    for c in input():
        if c in dic:
            dic[c]=(dic[c]+1)%4
        else:
            dic[c]=1
d=list(dic.values())
if h%2 and w%2:
    if d.count(1)+d.count(3)==1 and d.count(2)==0:
        print('Yes')
    else:
        print('No')
elif (h%2 and not w%2) or (w%2 and not h%2):
    if not (d.count(1)+d.count(3)>0):
        if h%2:
            if d.count(2)<=w//2 and d.count(2)%2==(w//2)%2:
                print('Yes')
        elif w%2:
            if d.count(2)<=h//2 and d.count(2)%2==(h//2)%2:
                print('Yes')
    else:
        print('No')
else:
    if sum(d)==0:
        print('Yes')
    else:
        print('No')
    
    
    

Fixed code:
# coding: utf-8
h,w=map(int,input().split())
dic={}
for i in range(h):
    for c in input():
        if c in dic:
            dic[c]=(dic[c]+1)%4
        else:
            dic[c]=1
d=list(dic.values())
if h%2 and w%2:
    if d.count(1)+d.count(3)==1 and d.count(2)<=h//2+w//2:
        print('Yes')
    else:
        print('No')
elif (h%2 and not w%2) or (w%2 and not h%2):
    if not (d.count(1)+d.count(3)>0):
        if h%2:
            if d.count(2)<=w//2 :#and d.count(2)%2==(w//2)%2:
                print('Yes')
            else:
                print('No')
        elif w%2:
            if d.count(2)<=h//2 :#and d.count(2)%2==(h//2)%2:
                print('Yes')
            else:
                print('No')
    else:
        print('No')
else:
    if sum(d)==0:
        print('Yes')
    else:
        print('No')