qyliang/CodeNanoFix huggingface dataset:
Buggy code:
def input(): return sys.stdin.readline().strip()

def resolve():
    s=input()
    if 'N' in s and 'S' in s and 'W' in s and 'E' in s:
        ans='Yes'
    elif 'N' in s and 'S' in s and 'W' not in s and 'E' not in s:
        ans='Yes'
    elif 'N' not in s and 'S' not in s and 'W' in s and 'E' in s:
        ans='Yes'
    else:
        ans='No'
    print(ans)
resolve()

Fixed code:
import sys
def input(): return sys.stdin.readline().strip()

def resolve():
    s=input()
    ans='No'
    if 'N' in s and 'S' in s and 'W' in s and 'E' in s:
        ans='Yes'
    elif 'N' in s and 'S' in s and \
            'W' not in s and 'E' not in s:
        ans='Yes'
    elif 'N' not in s and 'S' not in s and\
            'W' in s and 'E' in s:
        ans='Yes'
    print(ans)
resolve()
Buggy code:
import collections
S=str(input())

List=list(set(S))
List.sort()

flag=0
if len(List)%2==0:
    if len(List)//2==1:
        if List[0]=="E" and List[1]=="W":
            flag=1
        elif List[0]=="N" and List[1]=="S":
            flag=1
    elif len(List)//2==2:
            flga=1
            
print("Yes" if flag==1 else "No")

Fixed code:
import collections
S=str(input())

List=list(set(S))
List.sort()

flag=0
if len(List)%2==0:
    if len(List)//2==1:
        if List[0]=="E" and List[1]=="W":
            flag=1
        elif List[0]=="N" and List[1]=="S":
            flag=1
    elif len(List)//2==2:
            flag=1
            
print("Yes" if flag==1 else "No")
Buggy code:
s = input()

def f(a,b):
  return (a in s and b not in s) or (b in s and a not in s):
  
if f('W', 'E') or f('N', 'S'):
  print('No')
else:
  print('Yes')

Fixed code:
s = input()

def f(a,b):
  return (a in s and b not in s) or (b in s and a not in s)
  
if f('W', 'E') or f('N', 'S'):
  print('No')
else:
  print('Yes')
Buggy code:
s = input()
N = s.count('N')
S = s.count('S')
E = s.count('E')
W = s.count('W')
if ((N >= 1 and S == 0) or (N == 0 and S >= 1) or 
    (E >= 1 and W == 0) or (E == 0 and W >= 1):
  print('Yes')
else:
  print('No')


Fixed code:
s = input()
N = s.count('N')
W = s.count('W')
S = s.count('S')
E = s.count('E')

ans = 'No'
if (N >= 1 and S >= 1) or (N == S == 0):
  if (W >= 1 and E >= 1) or (W == E == 0):
    ans = 'Yes'
print(ans)
Buggy code:
# import collections
S = input()
# CS = collections.Counter(S)
# print(CS)
cn = S.count('N')
ce = S.count('E')
cs = S.count('S')
cw = S.count('W')
if cn > 1 and cs > 1 and ce < 0 and cw < 0:
    print('Yes')
elif cn < 0 and cs < 0 and ce > 1 and cw > 1:
    print('Yes')
elif cn > 1 and cs > 1 and ce > 1 and cw > 1:
    print('Yes')
else:
    print('No')


Fixed code:
# import collections
S = input()
# CS = collections.Counter(S)
# print(CS)
cn = S.count('N')
ce = S.count('E')
cs = S.count('S')
cw = S.count('W')
# print(cn, cs, cw, ce)
if cn > 0 and cs > 0 and ce == 0 and cw == 0:
    print('Yes')
elif cn == 0 and cs == 0 and ce > 0 and cw > 0:
    print('Yes')
elif cn > 0 and cs > 0 and ce > 0 and cw > 0:
    print('Yes')
else:
    print('No')
Buggy code:
S=set(list(input()))
n=0
s=0
e=0
w=0
if 'N' in S:
  n=1
if 'S' in S:
  s=1
if 'E' in S:
  e=1
if 'W' in S:
  w=1

if (n^s)&(e^w):
  print('Yes')
else:
  print('No')

Fixed code:
S=set(list(input()))
n=0
s=0
e=0
w=0
if 'N' in S:
  n=1
if 'S' in S:
  s=1
if 'E' in S:
  e=1
if 'W' in S:
  w=1

if (n^s)|(e^w):
  print('No')
else:
  print('Yes')
Buggy code:
import numpy as np

S = input()
NSEW = [S.count("N"), S.count("S"), S.count("E"), S.count("W")]

if np.prod(NSEW) > 0:
    print("Yes")
elif NSEW[0] + NSEW[1] > 0:
    if NSEW[0] == 0 or NSEW[1] == 0:
        print("No")
        exit()
elif NSEW[2] + NSEW[3] > 0:
    if NSEW[2] == 0 or NSEW[3] == 0:
        print("No")
        exit()
print("Yes")

Fixed code:
import numpy as np

S = input()
NSEW = [S.count("N"), S.count("S"), S.count("E"), S.count("W")]

if np.prod(NSEW) > 0:
    print("Yes")
    exit()
elif NSEW[0] + NSEW[1] > 0 and NSEW[0] * NSEW[1] == 0:
    print("No")
    exit()
elif NSEW[2] + NSEW[3] > 0 and NSEW[2] * NSEW[3] == 0:
    print("No")
    exit()
print("Yes")
Buggy code:
# coding:utf-8

S = input()
n = S.count('N')
s = S.count('S')
e = S.count('E')
w = S.count('W')
print(n, s, e, w)

if (n == 0 and s != 0) or (n != 0 and s == 0):
    print('No')
elif (e == 0 and w != 0) or (e != 0 and w == 0):
    print('No')
else:
    print('Yes')


Fixed code:
# coding:utf-8

S = input()
n = S.count('N')
s = S.count('S')
e = S.count('E')
w = S.count('W')
# print(n, s, e, w)

if (n == 0 and s != 0) or (n != 0 and s == 0):
    print('No')
elif (e == 0 and w != 0) or (e != 0 and w == 0):
    print('No')
else:
    print('Yes')
Buggy code:
S = input()
a = S.count('N')
b = S.count('S')
c = S.count('E') 
d = S.count('W')

if a*b > 0 and c==0 and d==0:
  print('Yes')
elif c*d >0 and a==0 and b==0:
  print('Yes')
elif a==0 and b==0 and c==0 and d==0:
  print('Yes')
else:
  print('No')

Fixed code:
S = input()
a = S.count('N')
b = S.count('S')
c = S.count('E') 
d = S.count('W')

if a*b*c*d > 0:
  print('Yes')
elif a*b > 0 and c==0 and d==0:
  print('Yes')
elif c*d >0 and a==0 and b==0:
  print('Yes')
elif a==0 and b==0 and c==0 and d==0:
  print('Yes')
else:
  print('No')
Buggy code:
import bisect,collections,copy,heapq,itertools,math,operator,string
def I(): return int(input())
def S(): return input()
def LI(): return list(map(int,input().split()))
def LS(): return list(input().split())
##################################################
S = S()
condition1 = 'S' in S == 'N' in S
condition2 = 'E' in S == 'W' in S
print('Yes' if condition1 and condition2 else 'No')


Fixed code:
import bisect,collections,copy,heapq,itertools,math,operator,string
def I(): return int(input())
def S(): return input()
def LI(): return list(map(int,input().split()))
def LS(): return list(input().split())
##################################################
S = S()
condition1 = ('S' in S) == ('N' in S)
condition2 = ('E' in S) == ('W' in S)
print('Yes' if condition1 and condition2 else 'No')
Buggy code:
s = input()
if s.count('N') >= 1 and s.count('S') >= 1:
  if s.count('W') >= 1 and s.count('E') >= 1:
    print('Yes')
  elif s.count('W') ==0 and s.count('E') == 0:
    print('Yes')
elif s.count('N') == 0 and s.count('S') == 0:
  if s.count('W') >= 1 and s.count('E') >= 1:
    print('Yes')
  elif s.count('W') ==0 and s.count('E') == 0:
    print('Yes')
else:
  print('No')

Fixed code:
s = input()
if s.count('N') >= 1 and s.count('S') >= 1:
  if s.count('W') >= 1 and s.count('E') >= 1:
    print('Yes')
    exit()
  elif s.count('W') ==0 and s.count('E') == 0:
    print('Yes')
    exit()
elif s.count('N') == 0 and s.count('S') == 0:
  if s.count('W') >= 1 and s.count('E') >= 1:
    print('Yes')
    exit()
  elif s.count('W') ==0 and s.count('E') == 0:
    print('Yes')
    exit()
print('No')
Buggy code:
S = input()
d = {}
for s in S:
  d[s] = True
  
if 'N' in d:
  if 'S' not in d:
    print 'No'
    exit()
    
if 'S' in d:
  if 'N' not in d:
    print 'No'
    exit()

if 'E' in d:
  if 'W' not in d:
    print 'No'
    exit()
    
if 'W' in d:
  if 'E' not in d:
    print 'No'
    exit()  
    
print 'Yes'

Fixed code:
S = input()
d = {}

for s in S:
  d[s] = True

if 'N' in d:
  if 'S' not in d:
    print("No")
    exit()
    
if "S" in d:
  if 'N' not in d:
    print("No")
    exit()

if "E" in d:
  if "W" not in d:
    print("No")
    exit()
    
if "W" in d:
  if "E" not in d:
    print("No")
    exit()  
    
print("Yes")
Buggy code:
S=input()
s=set(S)
if ("N" in s and "S" not in s) or
	("S" in s and "N" not in s) or
	("E" in s and "W" not in s) or
    ("W" in s and "E" not in s):
      print("No")
else:
  print("Yes")

Fixed code:
s = set(input())

if "S" not in s and "N" in s:
	print("No")
elif "S" in s and "N" not in s:
	print("No")
elif "W" not in s and "E" in s:
	print("No")
elif "W" in s and "E" not in s:
	print("No")
else:
	print("Yes")
Buggy code:
S=input()

ans="NO"
n=0
w=0
e=0
s=0

for str in S:
  if str=="N":
    n +=1
  elif str=="E":
    e +=1
  elif str=="S":
    s +=1
  else:
    w +=1

if (n>0 and s>0) or (n==0 and s==0):
  tate=True
if (e>0 and w>0) or (e==0 and w==0):
  yoko=True
  
if tate and yoko:
  ans="Yes"
  
print(ans)

Fixed code:
S=input()

ans="No"
n=0
w=0
e=0
s=0
tate=0
yoko=0

for str in S:
  if str=="N":
    n +=1
  elif str=="E":
    e +=1
  elif str=="S":
    s +=1
  else:
    w +=1

if (n>0 and s>0) or (n==0 and s==0):
  tate=True
if (e>0 and w>0) or (e==0 and w==0):
  yoko=True
  
if tate and yoko:
  ans="Yes"
  
print(ans)
Buggy code:
s = input()
count = [0, 0, 0, 1]
for i in range(len(s)):
  if s[i] == "N":
    count[0] = 1
  if s[i] == "S":
    count[1] = 1
  if s[i] == "W":
    count[2] = 1
  if s[i] == "E":
    count[3] = 1
if count[0] or count[1] or count[2] or count[3]:
  print("Yes")
else:
  print("No")

Fixed code:
s = input()
count = [0, 0, 0, 0]
for i in range(len(s)):
  if s[i] == "N":
    count[0] = 1
  if s[i] == "S":
    count[1] = 1
  if s[i] == "W":
    count[2] = 1
  if s[i] == "E":
    count[3] = 1
if (count[0] + count[1])%2 or (count[2] + count[3])%2:
  print("No")
else:
  print("Yes")
Buggy code:
#A - Wanna go back home
S =input()
n = 0
w = 0
s = 0
e = 0
for i in range(len(S)):
    if S[i] == "N":
        n += 1
    elif S[i] == "W":
        w += 1
    elif S[i] == "S":
        s += 1
    else:
        e += 1

#print(n,w,s,e)

if abs(n - s) == 0 and abs(w - e) == 0:
    print("Yes")
else:
    print("No")

Fixed code:
#A - Wanna go back home
S =input()
n = 0
w = 0
s = 0
e = 0
for i in range(len(S)):
    if S[i] == "N":
        n += 1
    elif S[i] == "W":
        w += 1
    elif S[i] == "S":
        s += 1
    else:
        e += 1

#print(n,w,s,e)

if (n > 0 and s == 0) or (s > 0 and n == 0):
    print("No")
elif(w > 0 and e == 0) or (e > 0 and w == 0):
    print("No")
else:
    print("Yes")
Buggy code:
s = input()
sets = set()
for v in s:
    sets.add(v)
    
ans = "Yes"
if "N" in sets and "S" not in sets:
    ans = "Np"
if "S" in sets and "N" not in sets:
    ans = "Np" 
if "E" in sets and "W" not in sets:
    ans = "Np" 
if "W" in sets and "E" not in sets:
    ans = "Np"    
print(ans)

Fixed code:
s = input()
sets = set()
for v in s:
    sets.add(v)
    
ans = "Yes"
if "N" in sets and "S" not in sets:
    ans = "No"
if "S" in sets and "N" not in sets:
    ans = "No" 
if "E" in sets and "W" not in sets:
    ans = "No" 
if "W" in sets and "E" not in sets:
    ans = "No"    
print(ans)
Buggy code:
s = input()
ans = 'Yes'
n = 0
w = 0
sow = 0
e = 0
#print(s)
for i in range(len(s)):
    if s[i] == 'N':
        n += 1
    elif s[i] == 'W':
        w += 1
    elif s[i] == 'S':
        sow += 1
    else:
        e += 1



if (n == 0 and w != 0) or (n != 0 and w == 0):
    ans = 'No'
if (sow == 0 and e != 0) or (sow != 0 and e == 0):
    ans = 'NO'
print('ans')

Fixed code:
s = input()
ans = 'Yes'
n = 0
w = 0
sow = 0
e = 0
#print(s)
for i in range(len(s)):
    if s[i] == 'N':
        n += 1
    elif s[i] == 'W':
        w += 1
    elif s[i] == 'S':
        sow += 1
    else:
        e += 1



if (n == 0 and sow != 0) or (n != 0 and sow == 0):
    ans = 'No'
if (w == 0 and e != 0) or (w != 0 and e == 0):
    ans = 'No'
print(ans)
Buggy code:
#!/usr/bin/env python3
from collections import defaultdict,deque
from heapq import heappush, heappop
from bisect import bisect_left, bisect_right
import sys, random, itertools, math
sys.setrecursionlimit(10**5)
input = sys.stdin.readline
sqrt = math.sqrt
def LI(): return list(map(int, input().split()))
def LF(): return list(map(float, input().split()))
def LI_(): return list(map(lambda x: int(x)-1, input().split()))
def II(): return int(input())
def IF(): return float(input())
def LS(): return list(map(list, input().split()))
def S(): return list(input().rstrip())
def IR(n): return [II() for _ in range(n)]
def LIR(n): return [LI() for _ in range(n)]
def FR(n): return [IF() for _ in range(n)]
def LFR(n): return [LI() for _ in range(n)]
def LIR_(n): return [LI_() for _ in range(n)]
def SR(n): return [S() for _ in range(n)]
def LSR(n): return [LS() for _ in range(n)]
mod = 1000000007
inf = 1e10

#solve
def solve():
    s = S()
    ans = [0, 0]
    for si in s:
        if si == "N":
            ans[0] = min(ans[0] + 1, 1)
        elif si == "W":
            ans[1] = min(ans[1] + 1, 1)
        elif si == "S":
            ans[0] = max(ans[0] - 1, -1)
        else:
            ans[1] = max(ans[1] - 1, -1)
    if ans == [0, 0]:
        print("Yes")
    else:
        print("No")
    return


#main
if __name__ == '__main__':
    solve()


Fixed code:
#!/usr/bin/env python3
from collections import defaultdict,deque
from heapq import heappush, heappop
from bisect import bisect_left, bisect_right
import sys, random, itertools, math
sys.setrecursionlimit(10**5)
input = sys.stdin.readline
sqrt = math.sqrt
def LI(): return list(map(int, input().split()))
def LF(): return list(map(float, input().split()))
def LI_(): return list(map(lambda x: int(x)-1, input().split()))
def II(): return int(input())
def IF(): return float(input())
def LS(): return list(map(list, input().split()))
def S(): return list(input().rstrip())
def IR(n): return [II() for _ in range(n)]
def LIR(n): return [LI() for _ in range(n)]
def FR(n): return [IF() for _ in range(n)]
def LFR(n): return [LI() for _ in range(n)]
def LIR_(n): return [LI_() for _ in range(n)]
def SR(n): return [S() for _ in range(n)]
def LSR(n): return [LS() for _ in range(n)]
mod = 1000000007
inf = 1e10

#solve
def solve():
    s = S()
    ans = [0, 0]
    for si in s:
        if si == "N":
            ans[0] |= 1
        elif si == "W":
            ans[1] |= 1
        elif si == "S":
            ans[0] |= 2
        else:
            ans[1] |= 2
    if ans[0] in [0, 3] and ans[1] in [0, 3]:
        print("Yes")
    else:
        print("No")
    return


#main
if __name__ == '__main__':
    solve()
Buggy code:
S = input()
n = 0
w = 0
s = 0
e = 0
x = len(S)
for i in range(x):
    if S[i] == 'N':
        n += 1
    elif S[i] == 'W':
        w += 1
    elif S[i] == 'S':
        s += 1
    elif S[i] == 'E':
        e += 1

if n == s and w == e:
    print('Yes')
else:
    print('No')

Fixed code:
S = input()
n, e, w, s = 0, 0, 0, 0
for i in range(len(S)):
  if S[i] == 'N':
    n = 1
  elif S[i] == 'E':
    e = 1
  elif S[i] == 'W':
    w = 1
  elif S[i] == 'S':
    s = 1
if n == s and e == w:
  print('Yes')
else:
  print('No')
Buggy code:
import sys
import os
if sys.platform=="darwin":
	base = os.path.dirname(os.path.abspath(__file__))
	name = os.path.normpath(os.path.join(base, '../Documents/input.txt'))
	#print(name)
	sys.stdin = open(name)

s = input()
ans = 0

ans = s.count("N") * s.count("W") * s.count("E") * s.count("S")
#print(ans)

print("Yes" if ans!=0 else "No")


Fixed code:
import sys
import os
if sys.platform=="darwin":
	base = os.path.dirname(os.path.abspath(__file__))
	name = os.path.normpath(os.path.join(base, '../Documents/input.txt'))
	#print(name)
	sys.stdin = open(name)

s = input()
ansns = 0
ansew = 0

ansns = s.count("N") * s.count("S")
if s.count("N")==0 and s.count("S")==0:
	ansns = 1

ansew = s.count("E") * s.count("W")
if s.count("E")==0 and s.count("W")==0:
	ansew = 1

ans = ansns * ansew

print("Yes" if ans!=0 else "No")
Buggy code:
s = input()
if len(set(s))%2 == 0 and (s.count("N") and s.count("S")) != 0 and (s.count("W") and s.count("E")) != 0:
  print("Yes")
else:
  print("No")

Fixed code:
s = input()
if len(set(s))%2 == 0 and ((s.count("N") and s.count("S")) != 0 or (s.count("W") and s.count("E")) != 0):
  print("Yes")
else:
  print("No")
Buggy code:
# AGC 003: A – Wanna go back home
s = input()
print('Yes' if ('N' in s and 'S' in s) or ('E' in s and 'W' in s) else 'No')

Fixed code:
# AGC 003: A – Wanna go back home
s = input()
print('No' if ('N' in s and 'S' not in s) or ('N' not in s and 'S' in s) or ('E' in s and 'W' not in s) or ('E' not in s and 'W' in s) else 'Yes')
Buggy code:
def inpl():
    return list(map(int, input().split()))


def f(a, b):
    if a == 0 and b == 0:
        return True
    elif a * b == 0:
        return False
    else:
        return True

S = input()

N = S.count('N')
W = S.count('W')
S = S.count('S')
E = E.count('E')

if f(N, S) is True and f(W, E) is True:
    print('Yes')
else:
    print('No')

Fixed code:
def inpl():
    return list(map(int, input().split()))


def f(a, b):
    if a == 0 and b == 0:
        return True
    elif a * b == 0:
        return False
    else:
        return True


S = input()
# print(S)
cN = S.count('N')
cW = S.count('W')
cS = S.count('S')
cE = S.count('E')

if f(cN, cS) is True and f(cW, cE) is True:
    print('Yes')
else:
    print('No')
Buggy code:
N = input()
if "N" in N and "W" in N and "E" in N and "S" in N or "N" not in N and "S" not in N or "W" not in N and "E" not in N:
    print("Yes")
else:
    print("No")

Fixed code:
S = input()

NS = ('N' in S and 'S' in S) or ('N' not in S and 'S' not in S)
EW = ('E' in S and 'W' in S) or ('E' not in S and 'W' not in S)

if NS and EW:
    print('Yes')
else:
    print('No')
Buggy code:
s=input()
if s=='' or ((s.count('E') and s.count('W'))==0) or ((s.count('N') and s.count('S'))==0):
    print('Yes')
elif (s.count('E') and s.count('W') and s.count('N') and s.count('S'))>0:
    print('Yes')
else:
    print('No')

Fixed code:
T = input()

N = T.count('N')
S = T.count('S')
W = T.count('W')
E = T.count('E')

if N > 0 and S == 0 or S > 0 and N == 0:
    print('No')
elif W > 0 and E == 0 or E > 0 and W == 0:
    print('No')
else:
    print('Yes')
Buggy code:
S=list(input())
ans="Yes"
n=S.count("N")
e=S.count("E")
w=S.count("W")
s=S.count("S")
if n>0 and s>0:
  if e>0 and w>0:
    pass
  elif e==0 and w==0:
    pass
  else:
    ans="No"
elif n==0 and s==0:
    if e>0 and w>0:
    pass
  elif e==0 and w==0:
    pass
  else:
    ans="No"
elif e>0 and w>0:
  if n>0 and s>0:
    pass
  elif n==0 and s==0:
    pass
  else:
    ans="No"
elif e==0 and w==0:
  if n>0 and s>0:
    pass
  elif n==0 and s==0:
    pass
  else:
    ans="No"
else:
  ans="No"
print(ans)

Fixed code:
S=list(input())
ans="Yes"
n=S.count("N")
e=S.count("E")
w=S.count("W")
s=S.count("S")
if n>0 and s>0:
  if e>0 and w>0:
    pass
  elif e==0 and w==0:
    pass
  else:
    ans="No"
elif n==0 and s==0:
  if e>0 and w>0:
    pass
  elif e==0 and w==0:
    pass
  else:
    ans="No"
elif e>0 and w>0:
  if n>0 and s>0:
    pass
  elif n==0 and s==0:
    pass
  else:
    ans="No"
elif e==0 and w==0:
  if n>0 and s>0:
    pass
  elif n==0 and s==0:
    pass
  else:
    ans="No"
else:
  ans="No"
print(ans)
Buggy code:
s = input()
if "N" in s:
  if "S" not in s :
    print("No")
    exit()
if "E" in s:
  if "W" not in s:
    print("No")
    exit()
print("Yes")

Fixed code:
s=input()
if 'N' in s and not'S' in s:
    print('No')
    exit()
if not 'N' in s and 'S' in s:
    print('No')
    exit()
if 'W' in s and not'E' in s:
    print('No')
    exit()
if not 'W' in s and 'E' in s:
    print('No')
    exit()
print('Yes')
Buggy code:
def NS(S):
  return ("N" in S) ^ ("S" in S)

def EW(S):
  return ("E" in S) ^ ("W" in S)

S = input()
if NS(S) and EW(S):
  print("Yes")
else:
  print("No")


Fixed code:
def NS(S):
  return ("N" in S) ^ ("S" in S)

def EW(S):
  return ("E" in S) ^ ("W" in S)



S = input()
if not(NS(S)) and not(EW(S)):
  print("Yes")
else:
  print("No")
Buggy code:
s=input()
if (s.count('E') and s.count('W') and s.count('N') and s.count('S'))==0:
    print('Yes')
elif (s.count('E') and s.count('W') and s.count('N') and s.count('S'))>0:
    print('Yes')
else:
    print('No')

Fixed code:
S = input()
if (S.count('N') > 0 and S.count('S') == 0) or (S.count('S') > 0 and S.count('N') == 0):
    print('No')
elif (S.count('E') > 0 and S.count('W') == 0) or (S.count('W') > 0 and S.count('E') == 0):
    print('No')
else:
    print('Yes')
Buggy code:
S=input()


if "W" in S:
    if not "E" in S:
        print("No")
        exit()

if "E" in S:
    if not "W" in S:
        print("No")

if "N" in S:
    if not "S" in S:
        print("No")

if "S" in S:
    if not "N" in S:
        print("No")
print("Yes")


Fixed code:
S = input()
if "N" in S:
    if "S" not in S:
        print("No")
        exit()
elif "S" in S:
    if "N" not in S:
        print("No")
        exit()

if "W" in S:
    if "E" not in S:
        print("No")
        exit()
elif "E" in S:
    if "W" not in S:
        print("No")
        exit()
print("Yes")
Buggy code:
s=input();f=lambda c:c in s;print(['No','Yes'][f('N')^f('S') or f('E')^f('W')])

Fixed code:
s=input();f=lambda c:c in s;print(['Yes','No'][f('N')^f('S') or f('E')^f('W')])
Buggy code:
s=input()
a =["N","S","W","E"]
flag1=0
flag2=0
if a[0] in s and a[1] in s:
  flag1=1
if a[0] not in s and a[1] not in s:
  flag1=1
if a[2] in s and a[3] in s:
  flag2=1
if a[2] not in s and a[3] not in s:
  flag2=1
if flag1+flag2=2:
  print("Yes")
else:
  print("No")

Fixed code:
s=input()
a =["N","S","W","E"]
flag1=0
flag2=0
if a[0] in s and a[1] in s:
  flag1=1
if a[0] not in s and a[1] not in s:
  flag1=1
if a[2] in s and a[3] in s:
  flag2=1
if a[2] not in s and a[3] not in s:
  flag2=1
if flag1+flag2==2:
  print("Yes")
else:
  print("No")
Buggy code:
s = input()
from collections import defaultdict
d = defaultdict(bool)
def inv(c):
    dic = {"W":"E", "E":"W", "S":"N", "N":"S"}
    return dic[c]
for c in s:
    d[c] = True
def sol():
    for c in "NSWE":
        if d[c] == True and d[inv(c)] == False:
            return False
    return True
print("YNEOS"[not sol()::2])  

Fixed code:
s = input()
from collections import defaultdict
d = defaultdict(bool)
def inv(c):
    dic = {"W":"E", "E":"W", "S":"N", "N":"S"}
    return dic[c]
for c in s:
    d[c] = True
def sol():
    for c in "NSWE":
        if d[c] == True and d[inv(c)] == False:
            return False
    return True
print("YNeos"[not sol()::2])
Buggy code:
S = input()
w = S.count('W')
s = S.count('S')
e = S.count('E')
n = S.count('N')
if w == e and s == n:
    print('Yes')
else:
    print('No')

Fixed code:
S = input()
w = S.count('W')
e = S.count('E')
n = S.count('N')
s = S.count('S')
if (w and not e) or (e and not w) or (n and not s) or (s and not n):
    print("No")
else:
    print("Yes")
Buggy code:
s=list(input())
if l.count("N")==l.count("S") and l.count("E")==l.count("W"):
    print("Yes")
else:
    print("No")

Fixed code:
S = input()
s = list(set(S))
if s.count('S') == s.count('N') and s.count('E') == s.count('W'):
  print('Yes')
else:
  print('No')
Buggy code:
s=input()
ans=[0]*4
check='NWSE'
for i in range(len(s)):
  for j in range(len(check)):
    if s[i]==check[j]:
      ans[j]+=1
if (ans[0]+ans[2])%2==0 and (ans[1]+ans[3])%2==0:
  print('Yes')
else:
  print('No')


Fixed code:
s=input()
ans=[0]*4
check='NWSE'
for i in range(len(s)):
  for j in range(len(check)):
    if s[i]==check[j]:
      ans[j]+=1
if ans[0]!=0 and ans[2]!=0 and ans[1]!=0 and ans[3]!=0:
  print('Yes')
elif ans[0]!=0 and ans[2]!=0 and ans[1]==0 and ans[3]==0:
  print('Yes')
elif ans[0]==0 and ans[2]==0 and ans[1]!=0 and ans[3]!=0:
  print('Yes')
else:
  print('No')
Buggy code:
S = input()
N = len(S)
d = [0,0,0,0]
s = ['N','W','S','E']
for i in range(N):
    for j in range(3):
        if S[i] == s[j]:
            d[j] += 1
            break
flag = True
if (d[0] == 0 and d[2] == 0) or (d[0] != 0 and d[2] != 0):
    pass
else:
    flag = False
if (d[1] == 0 and d[3] == 0) or (d[1] != 0 and d[3] != 0):
    pass
else:
    flag = False
    
if flag:
    print('Yes')
else:
    print('No')


Fixed code:
S = input()
N = len(S)
d = [0,0,0,0]
s = ['N','W','S','E']
for i in range(N):
    for j in range(4):
        if S[i] == s[j]:
            d[j] += 1
            break

flag = True
if (d[0] == 0 and d[2] == 0) or (d[0] != 0 and d[2] != 0):
    pass
else:
    flag = False
if (d[1] == 0 and d[3] == 0) or (d[1] != 0 and d[3] != 0):
    pass
else:
    flag = False
    
if flag:
    print('Yes')
else:
    print('No')
Buggy code:
s = input()
s = set(list(s))
if s in "N" != s in "S":
    print("No")
    exit()
if s in "W" != s in "E":
    print("No")
    exit()
print("Yes")

Fixed code:
s=set(list(input()))
if "S" in s:
    if not "N" in s:
        print("No")
        exit()
if "N" in s:
    if not "S" in s:
        print("No")
        exit()
if "E" in s:
    if not "W" in s:
        print("No")
        exit()
if "W" in s:
    if not "E" in s:
        print("No")
        exit()
print("Yes")