qyliang/CodeNanoFix huggingface dataset:
Buggy code:
s=input()
for i in range(len(s)):
    if (i+1)%2==0:
        if s[i]=="R":
            print(i+1)
            print("No")
            exit()
    else:
        if s[i]=="L":
            print(i+1)
            print("No")
            exit()
print("Yes")

Fixed code:
s = input()

for i in range(len(s)):
    if i % 2 == 0:
        if s[i] == "L":
            print("No")
            exit()
    else:
        if s[i] == "R":
            print("No")
            exit()
print("Yes")
Buggy code:
s=input()
o=["R","U","D"]
e=["L","U","D"]

for t in range(len(s)):
  if t%2==1:
    if(t not in o):
      print("No")
      break
  else:
    if(t not in e):
      print("No")
      break
print("Yes")

Fixed code:
s=input()
o=["R","U","D"]
e=["L","U","D"]
i=0
for t in range(len(s)):
  if(i==1):
    break
  if(t%2==0):
    if(s[t] not in o):
      print("No")
      i=1
      break
  else:
    if(s[t] not in e):
      print("No")
      i=1
      break
if(i==0):
	print("Yes")
Buggy code:
str = input()
ans = "Yes"
for i in len(str):
  if (i + 1) % 2 == 0 and str[i] not in ('L', 'U', 'D'):
    ans = "No"
  if (i + 1) % 2 == 1 and str[i] not in ('R', 'U', 'D'):
    ans = "No"

print(ans)

Fixed code:
str = input()
ans = "Yes"
for i in range(len(str)):
  if (i + 1) % 2 == 0 and str[i] not in ('L', 'U', 'D'):
    ans = "No"
  if (i + 1) % 2 == 1 and str[i] not in ('R', 'U', 'D'):
    ans = "No"
 
print(ans)
Buggy code:
s=input()
a=s[1::2]
b=[::2]
if "L" not in b and "R" not in a:print("Yes")
else:print("No")

Fixed code:
s=input()
a=s[1::2]
b=s[::2]
if ("L" not in b) and ("R" not in a):print("Yes")
else:print("No")
Buggy code:
c=input()
test='Yes'
for i in range (len(c)) :
    if( i % 2) ==0 :
        if not (c[i] in 'ULD') :
            test = 'No'
            break
    else :
        if not (c[i] in 'URD') :
            test = 'No'
            break
print( test)
       

Fixed code:
c=input()
test='Yes'
for i in range (len(c)) :
    if( i % 2) ==0 :
        if not (c[i] in 'URD') :
            test = 'No'
            break
    else :
        if not (c[i] in 'ULD') :
            test = 'No'
            break
print( test)
Buggy code:
S = list(input())

for c in range(1,len(S)+1):
    if c%2==1: 
        if S[c] == 'L':
            print('No')
            break
    else:
        if S[c] == 'R':
            print('No')
            break
else:
    print('Yes')


Fixed code:
S = list(input())

for c in range(1,len(S)+1):
    if c%2==1: 
        if S[c-1] == 'L':
            print('No')
            break
    else:
        if S[c-1] == 'R':
            print('No')
            break
else:
    print('Yes')
Buggy code:
s = input()
ans = 'Yes'
for i in range(len(s)):
  if i%2 == 0:
    if s[i] == 'R':
      ans = 'No'
      break
  else:
    if s[i] == 'L':
      ans = 'No'
      break
print(ans)

Fixed code:
s = input()
ans = 'Yes'
for i in range(len(s)):
  if i%2 == 0:
    if s[i] == 'L':
      ans = 'No'
      break
  else:
    if s[i] == 'R':
      ans = 'No'
      break
print(ans)
Buggy code:
S = input()
N = len(S)
odd = ['R', 'U', 'D']
even = ['L', 'U', 'D']

for i in (0, N, 2):
  if S[i] not in odd:
    ans += 1
for i in (1, N ,2):
  if S[i] not in even:
    ans += 1

if ans == 0:
  print('Yes')
else:
  print('No')

Fixed code:
S = input()
N = len(S)
odd = ['R', 'U', 'D']
even = ['L', 'U', 'D']
ans = 0

for i in range(0, N, 2):
  if not (S[i] in odd):
    ans += 1
for i in range(1, N, 2):
  if not(S[i] in even):
    ans += 1
 
if ans == 0:
  print('Yes')
else:
  print('No')
Buggy code:
#coding: utf-8

S = list(map(str,input()))
even = ['L','U','D']
odd = ['R','U','D']

ans_e, ans_o= [],[]

for i in range(0,len(S),2):
    if S[i] in even:
        ans_e.append(1)

for i in range(1,len(S),2):
    if S[i] in odd:
        ans_o.append(1)

if all(ans_o) and all(ans_e):
    print('Yes')
else:
    print('No')

Fixed code:
#coding: utf-8

S = list(input())
even = ['L','U','D']
odd = ['R','U','D']

ans_e, ans_o= [],[]

for i in range(1,len(S),2):
    if S[i] in even:
        ans_e.append(1)
    else:
        ans_e.append(0)

for i in range(0,len(S),2):
    if S[i] in odd:
        ans_o.append(1)
    else:
        ans_o.append(0)

if all(ans_o) and all(ans_e):
    print('Yes')
else:
    print('No')
Buggy code:
import sys
S = input()
def tapdance() :
    i = 0
    L = len(S)
    for i in range(L):
        if i % 2 == 0:
            if S[i] == 'L' :
                print('No')
                return 
        else :
            if S[i] == 'R' :
                print('No')
                return 
    return('Yes')

tapdance()

Fixed code:
import sys
S = input()
def tapdance() :
    i = 0
    L = len(S)
    for i in range(L):
        if i % 2 == 0:
            if S[i] == 'L' :
                print('No')
                return 
        else :
            if S[i] == 'R' :
                print('No')
                return 
    print('Yes')
    return
 
tapdance()
Buggy code:
s = input()
c = True
for i in range(len(s)):
    if i % 2 == 0:
        if s[i] != 'U' && s[i] != 'D' && s[i] != 'L':
            c = False
    if i % 2 == 1:
        if s[i] != 'U' && s[i] != 'D' && s[i] != 'R':
            c = False

if c:
    print('Yes')
else:
    print('No')
    

Fixed code:
s = input()
c = True
for i in range(len(s)):
    if i % 2 == 1:
        if s[i] != 'U' and s[i] != 'D' and s[i] != 'L':
            c = False
    if i % 2 == 0:
        if s[i] != 'U' and s[i] != 'D' and s[i] != 'R':
            c = False

if c:
    print('Yes')
else:
    print('No')
Buggy code:
s=list(input())

f=0

for i in range(len(s)):
    if i%2==0:
        if s[i]=='L':
            f+=1
    else:
        if s[i]=='R':
            f+=1
if f>0:
    print('No')
else:
    print('YES')

Fixed code:
s=list(input())

f=0

for i in range(len(s)):
    if i%2==0:
        if s[i]=='L':
            f+=1
    else:
        if s[i]=='R':
            f+=1
if f>0:
    print('No')
else:
    print('Yes')
Buggy code:
S = list(map(str, input()))
count1 = 0
count2 = 1
while count2 < len(S):        
    if S[count2] == 'R':
        print('No')
        break
    else:
        count2 += 2
while count1+1 <= len(S):
    if S[count1] == 'L':
        print('No')
        break
    else: count +=2

else:
    print('Yes')

Fixed code:
S = list(map(str, input()))
count1 = 0
count2 = 1
while count1+1 <= len(S):
    if S[count1] == 'L':
        print('No')
        break
    else: count1 +=2
else:
    while count2 < len(S):        
        if S[count2] == 'R':
            print('No')
            break
        else:
            count2 += 2
    else:
        print('Yes')
Buggy code:
list = list(input())
a = ['L', 'U', 'D']
b = ['R', 'U', 'D']
isOK = True

for i, name in enumerate(list):
  if i % 2 == 1 and name not in a:
    print(name, i)
    isOK = False
  elif i % 2 == 0 and name not in b:
    isOK = False
  
print('Yes' if isOK else 'No')

Fixed code:
list = list(input())
a = ['L', 'U', 'D']
b = ['R', 'U', 'D']
isOK = True

for i, name in enumerate(list):
  if i % 2 == 1 and name not in a:
    isOK = False
  elif i % 2 == 0 and name not in b:
    isOK = False
  
print('Yes' if isOK else 'No')
Buggy code:
N = input()

M = len(N)
flag = True

for i in range(M):
  if i % 2 == 0:
    if N[i] == "R":
      flag = False
  else:
    if N[i] == "L":
      flag = False
if flag == True:
  print('No')
else:
  print('Yes')

Fixed code:
N = input()

M = int(len(N))
flag = True

for i in range(M):
  if i % 2 == 0:
    if N[i] == "L":
      flag = False
  else:
    if N[i] == "R":
      flag = False
if flag == False:
  print('No')
else:
  print('Yes')
Buggy code:
import re
hoge = list(input())
print(hoge,len(hoge))
i = 0
while i < len(hoge):
    if i%2==0 and re.findall(r'[LDU]',hoge[i]):
        pass
    elif i%2==1 and re.findall(r'[RDU]',hoge[i]):
        pass
    else:
        break
    i+=1
print(i)
if i == len(hoge):
  print('Yes')
else:
  print('No')

Fixed code:
import re
hoge = list(input())
i = 0
while i < len(hoge):
    if i%2==0 and re.findall(r'[RDU]',hoge[i]):
        pass
    elif i%2==1 and re.findall(r'[LDU]',hoge[i]):
        pass
    else:
        break
    i+=1
if i == len(hoge):
  print('Yes')
else:
  print('No')
Buggy code:
#a,b = map(int,input().split())
#A = list(map(int,input().split()))
S = str(input())
if('L' in S[0::2] or 'R' in S[1::2]):
    print('No')
else:
    print('yes')

Fixed code:
#a,b = map(int,input().split())
#A = list(map(int,input().split()))
S = str(input())
if('L' in S[0::2] or 'R' in S[1::2]):
    print('No')
else:
    print('Yes')
Buggy code:
s = input()

for i in range(len(s)):
    if i % 2 ==0:
        if s[i] == "R" or "U" or"D":
            ans = "Yes"
        else:
            ans = "No"
            break
    elif i % 2 ==1:
        if s[i] =="L" or "U" or "D":
            ans = "Yes"
        else:
            ans = "No"
            break
print(ans)

Fixed code:
s = input()
 
for i in range(len(s)):
    if i%2 == 0:
        if s[i] == "R" or s[i] == "U" or s[i] == "D":
            ans = "Yes"
        else:
            ans = "No"
            break
    elif i%2 == 1:
        if s[i] == "L" or s[i] == "U" or s[i] == "D":
            ans = "Yes"
        else:
            ans = "No"
            break
 
print(ans)
Buggy code:
odd=["R","U","D"]
even=["L","U","D"]

S=input()

k=0
for i in range(0,len(S),2):
  print(i)
  if S[i] not in odd:
     break
  else:
    k=k+1

for i in range(1,len(S),2):
#  print(i)
  if S[i] not in even:
#    print("No")
    break
  else:
    k=k+1

if k==len(S):
  print("Yes")
else:
  print("No")

Fixed code:
odd=["R","U","D"]
even=["L","U","D"]
 
S=input()
 
k=0
for i in range(0,len(S),2):
  if S[i] not in odd:
    break
  else:
    k=k+1
 
for i in range(1,len(S),2):
#  print(i)
  if S[i] not in even:
#    print("No")
    break
  else:
    k=k+1
 
if k==len(S):
  print("Yes")
else:
  print("No")
Buggy code:
S=input()
print("NYoe s"[len(re.sub("[RUD]",'',S[0::2]))==0==len(re.sub("[LUD]",'',S[1::2]))::2])

Fixed code:
import re
S=input()
print("NYoe s"[len(re.sub("[RUD]",'',S[0::2]))==0==len(re.sub("[LUD]",'',S[1::2]))::2])
Buggy code:
S = input()

for i in range(len(S)):
  if i % 2 == 0:
    if S[i] in {'L','U','D'}:
      continue
    else:
      print('No')
      exit()
  else:
    if S[i] in {'R','U','D'}:
      continue
    else:
      print('No')
      exit()

print('Yes')

Fixed code:
S = input()

for i in range(len(S)):
  if i % 2 == 0:
    if S[i] in {'R','U','D'}:
      continue
    else:
      print('No')
      exit()
  else:
    if S[i] in {'L','U','D'}:
      continue
    else:
      print('No')
      exit()

print('Yes')
Buggy code:
#coding:utf-8

S = input()

if ('L' in set(S[0::2]) or ('R' in set(S[1::2]):
    print('No')
else:
    print('Yes')


Fixed code:
#coding:utf-8

S = input()

if ('L' in set(S[0::2])) or ('R' in set(S[1::2])):
    print('No')
else:
    print('Yes')
Buggy code:
a = "Yes"
for i,s in enumerate(S):
    if i % 2 == 0:
        if s in ["R", "U", "D"]:
            pass
        else:
            a = "No"
            break
    else:
        if s in ["L", "U", "D"]:
            pass
        else:
            a = "No"
            break
            
print(a)
      

Fixed code:
S  = list(input())

a = "Yes"
for i,s in enumerate(S):
    if i % 2 == 0:
        if s in ["R", "U", "D"]:
            pass
        else:
            a = "No"
            break
    else:
        if s in ["L", "U", "D"]:
            pass
        else:
            a = "No"
            break
            
print(a)
Buggy code:
S = input()

check = True
for i, s in enumerate(S):
  if (i+1)%2 == 0:
    if not(s == "L" or s == "U" or s == "D"):
      check = False
  else:
    if not(s == "R" or s == "U" or s ="D"):
      check = False

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

Fixed code:
S = input()

check = True
for i, s in enumerate(S):
  if (i+1)%2 == 0:
    if not(s == "L" or s == "U" or s == "D"):
      check = False
  else:
    if not(s == "R" or s == "U" or s == "D"):
      check = False

if check:
  print("Yes")
else:
  print("No")
Buggy code:
S = input()
c1 = [s in ['R', 'U', 'D'] for s in S[::2]]
c2 = [s in ['L', 'U', 'D'] for s in S[1::2]]
print('Yes' if c1 and c2 else 'No')


Fixed code:
S = input()
c1 = all([s in ['R', 'U', 'D'] for s in S[::2]])
c2 = all([s in ['L', 'U', 'D'] for s in S[1::2]])
print('Yes' if c1 and c2 else 'No')
Buggy code:
s=input()
s2=s[0: :2]
s1=s[1: :2]
print(s1, s2)
ans=0

for i in range(len(s1)):
    if s1[i]=='L' or s1[i]=='U' or s1[i]=='D':
        ans+=1
    else:
        print('No')
        break

for i in range(len(s2)):
    if s2[i]=='R' or s2[i]=='U' or s2[i]=='D':
        ans+=1
    else:
        print('No')
        break
        
if ans==len(s):
    print('Yes')


Fixed code:
s=input()
s2=s[0: :2]
s1=s[1: :2]
ans=0

for i in range(len(s1)):
    if s1[i]=='L' or s1[i]=='U' or s1[i]=='D':
        ans+=1
    else:
        print('No')
        break

if ans==len(s1):   
    for i in range(len(s2)):
        if s2[i]=='R' or s2[i]=='U' or s2[i]=='D':
            ans+=1
        else:
            print('No')
            break
        
if ans==len(s):
    print('Yes')
Buggy code:
S=input()
print('YES' if all([s=='R'or s=='U' or s=='D' for s in S[::2]]) and all([t=='L'or t=='U' or t=='D' for t in S[1::2]]) else 'No')

Fixed code:
S=input()
print('Yes' if all([s=='R'or s=='U' or s=='D' for s in S[::2]]) and all([t=='L'or t=='U' or t=='D' for t in S[1::2]]) else 'No')
Buggy code:
import re

s = input()
even_list = []
odd_list = []

for i in range(len(s)):
    if (i+1) % 2 == 0:
        even_list.append(s[i])
    else:
        odd_list.append(s[i])

for i in range(len(even_list)):
    if not re.match(r'[R,L,U]',even_list[i]):
        print("No")
        exit()

for i in range(len(odd_list)):
    if not re.match(r'[L,U,D]', odd_list[i]):
        print("No")
        exit()

print("YES")



Fixed code:
import re

s = input()
even_list = []
odd_list = []

for i in range(len(s)):
    if (i+1) % 2 == 0:
        even_list.append(s[i])
    else:
        odd_list.append(s[i])

for i in range(len(even_list)):
    if not re.match(r'[L,U,D]',even_list[i]):
        print("No")
        exit()

for i in range(len(odd_list)):
    if not re.match(r'[R,U,D]', odd_list[i]):
        print("No")
        exit()

print("Yes")
Buggy code:
def main():
    S = input()

    count = 0
    for s in S:
        if count == 0:
            count = 1
            if (s != "R") & (s != "U") & (s != "D"):
                return "No"
        else:
            count = 0
            if (s != "L") & (s != "U") & (s != "D"):
                return "No"
        return "Yes"
if __name__ == '__main__':
    print(main())

Fixed code:
def main():
    S = str(input())

    count = 0
    for s in S:
        if count == 0:
            count = 1
            if (s != "R") & (s != "U") & (s != "D"):
                return "No"
        else:
            count = 0
            if (s != "L") & (s != "U") & (s != "D"):
                return "No"
    return "Yes"

if __name__ == '__main__':
    print(main())
Buggy code:
for i in S[::2]:
  if i == "L":
    A = False   
for x in S[1::2]:
  if x == "R":
    A = False

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

Fixed code:
S = input()
A = True
for i in S[::2]:
  if i == "L":
    A = False   
for x in S[1::2]:
  if x == "R":
    A = False

if A:
  print("Yes")
else:
  print("No")
Buggy code:
S = input()

lst = []

for ( i , j ) in enumerate(S) :
  if i % 2 == 0:
    if j not in ["L","U","D"]:      
      print("No")
      exit()
  else:
    if j not in ["R","U","D"]:      
      print("No")
      exit()
print("Yes") 

Fixed code:
S = input()

lst = []

for ( i , j ) in enumerate(S) :
  if i % 2 == 1:
    if j not in ["L","U","D"]:      
      print("No")
      exit()
  else:
    if j not in ["R","U","D"]:      
      print("No")
      exit()
print("Yes")
Buggy code:
s=input()
odev=0
for i in s:
	odev=odev+1
	if odev==1:
		if s=="L":
			print("No")
			break
	else:
		if s=="R":
			print("No")
			break
else:
	print("Yes")

Fixed code:
s=input()
odev=0
for i in s:
	odev=odev+1
	if odev%2==1:
		if i=="L":
			print("No")
			break
	else:
		if i=="R":
			print("No")
			break
else:
	print("Yes")
Buggy code:
strs = input()
 
for i in range(len(strs)):
  if i % 2 == 0:
    if (strs[i] == "L") or (strs[i] == "U") or (strs[i] == "D"):
      continue
    else:
      print("No")
      break
  else:
    if (strs[i] == "R") or (strs[i] == "U") or (strs[i] == "D"):
      continue
    else:
      print("No")
      break
else:
  print("Yes")

Fixed code:
strs = input()
 
for i in range(len(strs)):
  if i % 2 != 0:
    if (strs[i] == "L") or (strs[i] == "U") or (strs[i] == "D"):
      continue
    else:
      print("No")
      break
  else:
    if (strs[i] == "R") or (strs[i] == "U") or (strs[i] == "D"):
      continue
    else:
      print("No")
      break
else:
  print("Yes")
Buggy code:
dance = input()
judge = True

for i in dance:
  if i % 2 == 0 and dance[i] == "R":
    judge = False
    break
  if i % 2 == 1 and dance[i] == "L":
    judge = False
    break

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

Fixed code:
dance = input()
judge = True

for i in range(len(dance)):
    if i % 2 == 1 and dance[i] == "R":
        judge = False
        break
    if i % 2 == 0 and dance[i] == "L":
        judge = False
        break

if judge:
    print("Yes")
else:
    print("No")
Buggy code:
S = input()
n = len(S)
flag = 0
for i in range(0,n):
  if i%2==0 and (not (S[1]=='L' or S[1]=='U' or S[1]=='D')):
      flag = 1
  elif (i+1)%2!=0 and (not (S[1]=='R' or S[1]=='U' or S[1]=='D')):
      flag = 1
      
if flag==1:
  print("No")
else:
  print("Yes")

Fixed code:
S=input()
flag = 0
for i in range(0,len(S)):
  if (i+1)%2==0 and not (S[i]=='L' or S[i]=='U' or S[i]=='D'):
    flag = 1
  elif (i+1)%2!=0 and not (S[i]=='R' or S[i]=='U' or S[i]=='D'):
    flag = 1
    
if flag==1:
  print("No")
else:
  print("Yes")
Buggy code:
import sys
S=input()
for i in range(n//2):
    s=S[2*i]
    if s=="L":
        print("No")
        sys.exit()
    s=S[2*i+1]
    if s=="R":
        print("No")
        sys.exit()
if n%2==1:
    s=S[-1]
    if s=="L":
        print("No")
        sys.exit()
print("Yes")

Fixed code:
import sys
S=input()
n=len(S)
if n>1:
    for i in range(n//2):
        s=S[2*i]
        if s=="L":
            print("No")
            sys.exit()
        s=S[2*i+1]
        if s=="R":
            print("No")
            sys.exit()
if n%2==1:
    s=S[-1]
    if s=="L":
        print("No")
        sys.exit()
print("Yes")
Buggy code:
S = list(input())
T = []
for i in range(len(S)):
    if i%2 == 0 :
        S[i] = "R"
        T.append("A")
    if i%2 == 1 :
        S[i] = "L"
        T.append("B")
if "A" in T or "B" in T:
    print("No")
else :
    print("Yes")

Fixed code:
S = list(input())
T = []
for i in range(len(S)):
    if i%2 == 0 :
        if S[i] == "L":
            T.append("A")
        
    if i%2 == 1 :
        if S[i] == "R":
            T.append("B")
if "A" in T or "B" in T:
    print("No")
else :
    print("Yes")
Buggy code:
s = list(str(input()))
for i in range(1, len(s)+1):
  if (i%2 and s[i]=='L') or (i%2==0 and s[i]=='R'):
    print('No')
 	exit()
print('Yes')

Fixed code:
s = list(str(input()))
for i in range(len(s)):
  if ((i+1)%2 and s[i]=='L') or ((i+1)%2==0 and s[i]=='R'):
    print('No')
    exit()
print('Yes')
Buggy code:
S=input()
i=0
while i<len(S):
  if i%2=0:
    if S[i]=="L":
      print("No")
      exit()
    else:
      i+=1
  else:
    if S[i]=="R":
      print("No")
    else:
      i+=1
print("Yes")

Fixed code:
S=input()
i=0
while i<len(S):
  if i%2==0:
    if S[i]=="L":
      print("No")
      exit()
    else:
      i+=1
  else:
    if S[i]=="R":
      print("No")
      exit()
    else:
      i+=1
print("Yes")
Buggy code:
import sys

s = input()
i = 0
while i < 100 and i < len(s):
    if s[i] != "R" and s[i] != "U" and s[i] != "D":
        print(i)
        print(s[i])
        print("1No")
        sys.exit()
    i += 2
i = 1
while i < 100 and i < len(s):
    if s[i] != 'L' and s[i] != 'U' and s[i] != 'D':
        print(s[i])
        print("2No")
        sys.exit()
    i += 2

print("Yes")

Fixed code:
import sys

s = input()
i = 0
while i < 100 and i < len(s):
    if s[i] != "R" and s[i] != "U" and s[i] != "D":
        print("No")
        sys.exit()
    i += 2
i = 1
while i < 100 and i < len(s):
    if s[i] != 'L' and s[i] != 'U' and s[i] != 'D':
        print("No")
        sys.exit()
    i += 2

print("Yes")
Buggy code:
s = input()
ans = True
for i in range(len(s)):
    if i % 2 == 0 and s[i] != 'R' and s[i] != 'U' and s[i] != 'D':
        ans = False
        break
    if 1 % 2 == 1 and s[i] != 'L' and s[i] != 'U' and s[i] != 'D':
        ans = False
        break

if ans == True:
    print('Yes')
else:
    print('No')

Fixed code:
s = input()
ans = True
for i in range(len(s)):
    if i % 2 == 0 and s[i] != 'R' and s[i] != 'U' and s[i] != 'D':
        ans = False
        break
    elif i % 2 == 1 and s[i] != 'L' and s[i] != 'U' and s[i] != 'D':
        ans = False
        break

if ans == True:
    print('Yes')
else:
    print('No')
Buggy code:
def get_answer(input_list):
    d = input_list[0]
    f1 = True
    f2 = True
    for i in range(len(d)):
        s = d[i]
        if (i + 1) % 2 == 1:
            if s not in ["R","U","D"]:
                f1 = False
        else:
            if s not in ["L","U","D"]:
                f2 = False

    if f1 or f2:
        return "Yes"
    return "No"



if __name__ == "__main__":
    input_list = []
    while True:
        try:
            input1 = input()
            if not input1:
                break
            if len(input1) == 0:
                break
            input_list.append(input1)
        except EOFError:
            break
    print(get_answer(input_list))



Fixed code:
def get_answer(input_list):
    d = input_list[0]
    f1 = True
    f2 = True
    for i in range(len(d)):
        s = d[i]
        if (i + 1) % 2 == 1:
            if s not in ["R","U","D"]:
                f1 = False
        else:
            if s not in ["L","U","D"]:
                f2 = False

    if f1 and f2:
        return "Yes"
    return "No"



if __name__ == "__main__":
    input_list = []
    while True:
        try:
            input1 = input()
            if not input1:
                break
            if len(input1) == 0:
                break
            input_list.append(input1)
        except EOFError:
            break
    print(get_answer(input_list))
Buggy code:
s = input()

w1 = [ "R", "U", "D"]
w2 = [ "L", "U", "D"]

for i in range(len(s)):
  if i % 2 == 0:
    if not s[i] in w1 :
      print("No")
      exit()
  else :
    if not s[i] in w2 :
      print("No2")
      exit()
print("Yes")

Fixed code:
s = input()

w1 = [ "R", "U", "D"]
w2 = [ "L", "U", "D"]

for i in range(len(s)):
  if i % 2 == 0:
    if not s[i] in w1 :
      print("No")
      exit()
  else :
    if not s[i] in w2 :
      print("No")
      exit()
print("Yes")
Buggy code:
s = str(input())
odd = ['R', 'U', 'D]
even = ['L', 'U', 'D']
tmp = 0

for i in range(len(s)):

    if i%2!=0 and s[i] in odd:
       tmp += 1
    elif i%2==0 and s[i] in even:
        tmp += 1

print('Yes' if tmp==len(s) else 'No')

Fixed code:
s = str(input())
odd = ['R', 'U', 'D']
even = ['L', 'U', 'D']
tmp = 0

for i in range(len(s)):
    if i%2==0 and s[i] in odd:
        tmp += 1
    elif i%2!=0 and s[i] in even:
        tmp += 1

print('Yes' if tmp==len(s) else 'No')
Buggy code:
S = input()

S_contains = list(v for v in S)

even_list = S_contains[0::2]
odd_list = S_contains[1::2]

if 'R' in even_list and 'L' in odd_list:
    print('Yes')
else:
    print('No')

Fixed code:
S = input()
 
S_contains = list(v for v in S)
 
even_list = S_contains[1::2]
odd_list = S_contains[0::2]
 
if 'R' in even_list or 'L' in odd_list:
    print('No')
else:
    print('Yes')
Buggy code:
s = list(input())
count = 0
add,even = ["R","U","D"],["L","U","D"]
for i in range(len(s)):
    if (i % 2 == 0) and (s[i] in add):
        count += 1
    elif s[i] in even:
        count += 1
print("Yes" if count == len(s) else "No")


Fixed code:
s = list(input())
count = 0
add,even = ["R","U","D"],["L","U","D"]
for i in range(len(s)):
    if (i % 2 == 0) and (s[i] in add):
        count += 1
    elif (i % 2 == 1) and s[i] in even:
        count += 1
print("Yes" if count == len(s) else "No")