Harryxun/testdata huggingface dataset:
Buggy python submission (verdict: Time Limit Exceeded):
from fractions import gcd
from functools import reduce
n=int(input())
a=[int(i) for i in input().split()]
x=[]
for i in range(1,n+1):
    b=a.pop(-i)
    x.append(reduce(gcd,a))
    a.append(b)
print(max(x))

Fixed submission:
from fractions import gcd
n=int(input())
a=[int(i) for i in input().split()]
l=[0]*n
r=[0]*n
for i in range(n-1):
    l[i+1]=gcd(l[i],a[i])
    r[i+1]=gcd(r[i],a[n-i-1])
r=r[::-1]
g=[]
for i in range(n):
    g.append(gcd(l[i],r[i]))
print(max(g))

Buggy python submission (verdict: Time Limit Exceeded):
from fractions import gcd
from functools import reduce
n=int(input())
a=[int(i) for i in input().split()]
x=[]
for i in range(1,n+1):
    b=a.pop(-i)
    x.append(reduce(gcd,a))
    a.append(b)
print(max(x))

Fixed submission:
from fractions import gcd
n=int(input())
a=[int(i) for i in input().split()]
l=[0]*n
r=[0]*n
for i in range(n-1):
    l[i+1]=gcd(l[i],a[i])
    r[i+1]=gcd(r[i],a[n-i-1])
r=r[::-1]
g=[]
for i in range(n):
    g.append(gcd(l[i],r[i]))
print(max(g))
Buggy python submission (verdict: Runtime Error):
    N, A, B, C = map(int, input().split())
    l = [int(input()) for _ in range(N)]

    def dfs(i, a, b, c, x):
        if i == N:
            return (abs(A - a) + abs(B - b) + abs(C - c) + 10 * (x - 3)) if a * b * c != 0 else 10 ** 9
        ret1 = dfs(i + 1, a, b, c, x)
        ret2 = dfs(i + 1, a + l[i], b, c, x + 1)
        ret3 = dfs(i + 1, a, b + l[i], c, x + 1)
        ret4 = dfs(i + 1, a, b, c + l[i], x + 1)
        return (min(ret1, ret2, ret3, ret4))


Fixed submission:
N,A,B,C=map(int,input().split())
l=[int(input())for _ in range(N)]
def dfs(i,a,b,c,x):
    if i==N:
        return(abs(A-a)+abs(B-b)+abs(C-c)+10*(x-3))if a*b*c!=0 else 10**9
    ret1=dfs(i+1,a,b,c,x)
    ret2=dfs(i+1,a+l[i],b,c,x+1)
    ret3=dfs(i+1,a,b+l[i],c,x+1)
    ret4=dfs(i+1,a,b,c+l[i],x+1)
    return(min(ret1,ret2,ret3,ret4))
print(dfs(0,0,0,0,0))
Buggy python submission (verdict: Runtime Error):
h,w=map(int,input().split())
a=[[j for j in input()] for i in range(h)]
for i in range(h):
  if a[i].count('.')==w:
    a[i]=[]
while [] in a:
  a.remove([])
for i in range(w):
  c=0
  for j in range(len(a)):
    if a[j][i]=='.':
      c+=1
  if c==len(a):
    for j in range(len(a)):
      a[j][i]='!'
for i in range(len(a)):
  while '!' in a[i]:a
    a[i].remove('!')
for i in a:
  print(*i,sep='')

Fixed submission:
h,w=map(int,input().split())
a=[[j for j in input()] for i in range(h)]
for i in range(h):
  if a[i].count('.')==w:
    a[i]=[]
while [] in a:
  a.remove([])
for i in range(w):
  c=0
  for j in range(len(a)):
    if a[j][i]=='.':
      c+=1
  if c==len(a):
    for j in range(len(a)):
      a[j][i]='!'
for i in range(len(a)):
  while '!' in a[i]:
    a[i].remove('!')
for i in a:
  print(*i,sep='')
Buggy python submission (verdict: Runtime Error):
s=[i for i in input()]
t=[i for i in input()]
a=0
for i in range(len(s)):
    if s==t:
        a+=1
    s=[s[i] for i in range(-1,len(s)-1)]
print("Yes" if a>=1 else "No")s=[i for i in input()]
t=[i for i in input()]
a=0
for i in range(len(s)):
    if s==t:
        a+=1
    s=[s[i] for i in range(-1,len(s)-1)]
print("Yes" if a>=1 else "No")

Fixed submission:
s=[i for i in input()]
t=[i for i in input()]
a=0
for i in range(len(s)):
    if s==t:
        a+=1
    s=[s[i] for i in range(-1,len(s)-1)]
print("Yes" if a>=1 else "No")
Buggy python submission (verdict: Runtime Error):
a,b=int(input())
print("Yay!" if a<=8 and b<=8 else ":(")

Fixed submission:
a,b=map(int,input().split())
print("Yay!" if a<=8 and b<=8 else ":(")
Buggy python submission (verdict: Runtime Error):
a,b,c,d=map(int,input().split())
print("Yes"if b-a<=d and c-b<=d elif c-a<=d else "No")

Fixed submission:
a,b,c,d=map(int,input().split())
print("NYoe s"[(abs(b-a)<=d and abs(c-b)<=d)or abs(c-a)<=d::2])
Buggy python submission (verdict: Runtime Error):
import copy
S = list(input())
T = list(input())
for i in range(len(S) - len(T) + 1):
    c = 0
    A=copy.copy(S)
    check = False
    for j in range(len(T)):
        if A[i + j] == T[j]:
            c += 1
        elif A[i + j] == "?":
            A[i + j] = T[j]
            c += 1
        else:
            break
        if c == len(T):
            check = True
    if check:
        break
print("".join(A).replace("?","a") if check else "UNRESTORABLE")

Fixed submission:
import copy

S = list(input())
T = list(input())
candidate = []
if len(T) > len(S):
    print("UNRESTORABLE")
    exit()
for i in range(len(S) - len(T) + 1):
    c = 0
    A = copy.copy(S)
    check = False
    for j in range(len(T)):
        if A[i + j] == T[j]:
            c += 1
        elif A[i + j] == "?":
            A[i + j] = T[j]
            c += 1
        else:
            break
        if c == len(T):
            candidate = A
print("".join(candidate).replace("?", "a") if candidate else "UNRESTORABLE")
Buggy python submission (verdict: Runtime Error):
max=0
k=0
N=int(input())
for i in range(1,N+1):
    p=int(input())
    if p>max:max=p
    k=k+p
    print((k-max)+(max//2))

Fixed submission:
d=int(input())
print("Christmas"," Eve"*(25-d))

Buggy python submission (verdict: Runtime Error):
max=0
k=0
N=int(input())
for i in range(1,N+1):
    p=int(input())
    if p>max:max=p
    k=k+p
print((k-max)+(max//2))

Fixed submission:
d=int(input())
print("Christmas"," Eve"*(25-d))
Buggy python submission (verdict: Runtime Error):
max=0
for i in range(1,n+1):
    p=int(input())
    if p>max:
        max=p//2
        print(max)

Fixed submission:
max=0
k=0
N=int(input())
for i in range(1,N+1):
    p=int(input())
    if p>max:max=p
    k=k+p
print((k-max)+(max//2))
Buggy python submission (verdict: Time Limit Exceeded):
N, A, B = map(int, input().split())
lst = []

while len(lst) < N:
    for i in range(A):
        if len(lst) == N:
            break
        else:
            lst.append('b')
    for j in range(B):
        if len(lst) == N:
            break
        else:
            lst.append('r')

print(lst.count('b'))

    
    
    

Fixed submission:
N, A, B = map(int, input().split())
tmp = 0
tmp = N // (A + B) * A
print(tmp + min(N % (A + B), A))
Buggy python submission (verdict: Runtime Error):
A, B, K = map(int, input().split())

if A => K:
    A -= K
elif A < K < A + B:
    B -= K - A
    A = 0
elif A + B <= K:
    A = B = 0
    
print(A, B)
    

Fixed submission:
A, B, K = map(int, input().split())

if A >= K:
    A -= K
elif A < K < A + B:
    B -= K - A
    A = 0
elif A + B <= K:
    A = B = 0
    
print(A, B)

Buggy python submission (verdict: Time Limit Exceeded):
A, B, K = map(int, input().split())

for i in range(K):
    if A > 0:
        A -= 1
    elif A == 0 and B > 0:
        B -= 1
    elif A == B == 0:
        pass

print(A, B)
        
        

Fixed submission:
A, B, K = map(int, input().split())

if A >= K:
    A -= K
elif A < K < A + B:
    B -= K - A
    A = 0
elif A + B <= K:
    A = B = 0
    
print(A, B)
Buggy python submission (verdict: Runtime Error):
a = int(input())
s = int(input())

if a >= 3200:
  print(s)
else:
  print("red")

Fixed submission:
a = int(input())
s = input()

if a >= 3200:
  print(s)
else:
  print("red")

Buggy python submission (verdict: Runtime Error):
a = int(input())
s = int(input())

if a > 3200:
  print(s)
else:
  print("red")

Fixed submission:
a = int(input())
s = input()

if a >= 3200:
  print(s)
else:
  print("red")
Buggy python submission (verdict: Runtime Error):
import math

N, D = map(int, input().split())
X = [list(map(int, input().split())) for _ in range(N))]
cnt = 0

for i in range(N - 1):
    for j in range(i + 1, N):
    tmp = 0
    for k in range(D):
        tmp += ((X[i][k] - X[j][k])** 2)
    tmp = math.sqrt(tmp)
    if tmp.is_integer:
        cnt += 1

print(cnt)


Fixed submission:
import math

N, D = map(int, input().split())
X = [list(map(int, input().split())) for _ in range(N)]
cnt = 0

for i in range(N - 1):
    for j in range(i + 1, N):
        tmp = 0
        for k in range(D):
            tmp += ((X[i][k] - X[j][k])** 2)
        tmp = math.sqrt(tmp)
        if tmp.is_integer():
            cnt += 1

print(cnt)
Buggy python submission (verdict: Runtime Error):
A, B = map(int, input().split())

if 6 <= A <= 12:
  B = B / 2
elif 5 => B:
  B = 0
else:
  psss

print(int(B))

Fixed submission:
A, B = map(int, input().split())

if 6 <= A <= 12:
  B = B / 2
elif 5 >= A:
  B = 0
else:
  pass

print(int(B))
Buggy python submission (verdict: Runtime Error):
a, b = map(int, input().split())
c = input()
 
print(c[:b-1] + c[b-1].lower() + c[b:]

Fixed submission:
a, b = map(int, input().split())
c = input()
 
print(c[:b-1] + c[b-1].lower() + c[b:])
Buggy python submission (verdict: Time Limit Exceeded):
K, S = map(int, input().split())

count = 0

for X in range(K + 1):
  for Y in range(K + 1):
    for Z in range(K + 1):
      if X + Y + Z == S:
        count += 1

print(count)

Fixed submission:
K, S = map(int, input().split())

count = 0

for X in range(K + 1):
  for Y in range(K + 1):
      if S - (X + Y) <= K and S - (X + Y) >= 0:
        count += 1

print(count)
Buggy python submission (verdict: Time Limit Exceeded):
import collections

N = int(input())
As = list(map(int,input().split()))
Cs = collections.Counter(As)
#rlt = [Cs[i]*(Cs[i]-1)//2 for i in Cs]
#print(Cs)
for i in range(N):
  Cs2 = Cs.copy()
  rlt = (Cs[As[i]] - 1)*(Cs[As[i]] - 2)//2
  del Cs2[As[i]]
  for key in Cs2:
    rlt = rlt + Cs2[key]*(Cs2[key] - 1)//2
  print(rlt)

Fixed submission:
import collections

N = int(input())
As = list(map(int,input().split()))
Cs = collections.Counter(As)

s = 0
for key in Cs:
  s = s + Cs[key]*(Cs[key] - 1)//2
  
for i in range(N):
  rlt = s - Cs[As[i]]*(Cs[As[i]] - 1)//2 + (Cs[As[i]] - 1)*(Cs[As[i]] - 2)//2
  print(rlt)
Buggy python submission (verdict: Runtime Error):
import sys

if __name__ == '__main__':
    a = input()
    a = a.split('/')
    year = int(a[0])
    month = int(a[1])
    date = int(a[2])
    if year > 2019:
        print('TBD')
    elif year < 2019:
        print('Heisei')
    elif month < 4:
        print('Heisei')
    elif month > 4:
        print('TBD')
    elif data < 30:
        print('Heisei')
    else:
        print('TBD')

Fixed submission:
import sys

if __name__ == '__main__':
    a = input()
    a = a.split('/')
    year = int(a[0])
    month = int(a[1])
    date = int(a[2])
    if year > 2019:
        print('TBD')
    elif year < 2019:
        print('Heisei')
    elif month < 4:
        print('Heisei')
    elif month > 4:
        print('TBD')
    elif date <= 30:
        print('Heisei')
    else:
        print('TBD')
Buggy python submission (verdict: Runtime Error):
import itertools
import math
N = int(input())
P = list(map(int, input().split()))
Q = list(map(int, input().split()))
L = list(map(list,list(itertools.permutations(list(i for i in range(1,N+1)),N))))
a = L.index(P)
b = L.index(Q)
print(abs(a-b))

Fixed submission:
N = int(input())
S = str(input())
print(S.count("ABC"))

Buggy python submission (verdict: Runtime Error):
import itertools
import math
N = int(input())
P = list(map(int, input().split()))
Q = list(map(int, input().split()))
L = list(map(list,list(itertools.permutations(list(i for i in range(1,N+1)),N))))
a = L.index(P)
b = L.index(Q)
print(abs(a-b))

Fixed submission:
N = int(input())
S = str(input())
print(S.count("ABC"))
Buggy python submission (verdict: Runtime Error):
string = input().split()
print(string[1]+string[0])

Fixed submission:
print("".join(str(a) for a in ({1,2,3}-{int(input()), int(input())})))

Buggy python submission (verdict: Runtime Error):
string = input().split()
print(string[1]+string[0])

Fixed submission:
print("".join(str(a) for a in ({1,2,3}-{int(input()), int(input())})))
Buggy python submission (verdict: Time Limit Exceeded):
temp = input()
temp2 = temp.split(" ")
temp = []
for i in temp2:
    temp.append(int(i))

for i in range(1,100000000):
    ans1 = temp[0]*i
    if ans1 % temp[1] != 0:
        break
    if ans1 <= 10^18:
        ans1 = -1
        break
print(ans1)
    

Fixed submission:
temp = input()
temp2 = temp.split(" ")
temp = []
for i in temp2:
    temp.append(int(i))

for i in range(1,100000000):
    ans1 = temp[0]*i
    if ans1 % temp[1] != 0:
        break
    if ans1 >= 10^18:
        ans1 = -1
        break
print(ans1)

Buggy python submission (verdict: Time Limit Exceeded):
temp = input()
temp2 = temp.split(" ")
temp = []
for i in temp2:
    temp.append(int(i))

for i in range(1,100000000):
    ans1 = temp[0]*i
    if ans1 % temp[1] != 0:
        break
print(ans1)
    

Fixed submission:
temp = input()
temp2 = temp.split(" ")
temp = []
for i in temp2:
    temp.append(int(i))

for i in range(1,100000000):
    ans1 = temp[0]*i
    if ans1 % temp[1] != 0:
        break
    if ans1 >= 10^18:
        ans1 = -1
        break
print(ans1)

Buggy python submission (verdict: Runtime Error):
import numpy as np
X = int(input())
Y = int(input())

temp = np.random.randint(1,10^18)
temp2 = 0
temp3 = 1
while not temp % X == 0 and temp % Y != 0:
    temp = np.random.randint(1,10^18)
    temp2 = temp2 + 1
    if temp2 == 1000000:
        temp3 = -1 
        break

if temp3 == -1:
    print(temp3)
else:
    print(temp)

Fixed submission:
temp = input()
temp2 = temp.split(" ")
temp = []
for i in temp2:
    temp.append(int(i))

for i in range(1,100000000):
    ans1 = temp[0]*i
    if ans1 % temp[1] != 0:
        break
    if ans1 >= 10^18:
        ans1 = -1
        break
print(ans1)
Buggy python submission (verdict: Runtime Error):
N = input()

x = N*800
y = 0

for i in range(N+1):
  if i % 15 == 0:
    y = y + 200

ans = x-y    
print(ans)

Fixed submission:
N = int(input())

x = N * 800
y = 0

for i in range(1,N+1):
    if i % 15 == 0:
        y = y + 200

ans = x-y        
print(ans)

Buggy python submission (verdict: Runtime Error):
x = 800*N

y = 0
if N % 15 ==0:
  y = y + 200

print(x-y)

Fixed submission:
N = int(input())

x = N * 800
y = 0

for i in range(1,N+1):
    if i % 15 == 0:
        y = y + 200

ans = x-y        
print(ans)
Buggy python submission (verdict: Runtime Error):
A, B, K = map(int, input().split())

a = max(A - K,0)
if A - K < 0:
    b = max(B - K + A, 0)

print(a, b)


Fixed submission:
A, B, K = map(int, input().split())

a = max(A - K,0)
if A - K < 0:
    B = max(B - K + A, 0)

print(a, B)
Buggy python submission (verdict: Runtime Error):
a, b = map(int, input().split())

left = max(b - a, 0)
if left == 0:
    print(1)
    exit(1)
print(left // a + 2)

Fixed submission:
a, b = map(int, input().split())

outlet = 1
res = 0

while outlet < b:
    outlet -= 1
    outlet += a
    res += 1

print(res)
Buggy python submission (verdict: Time Limit Exceeded):
N = int(input())
Hs = list(map(int, input().split()))
res = [0] * N

for index, h in enumerate(Hs):
    l = 0
    #if index > 0:
    #    l = max(res[index - 1] - 1, 0)

    tmp = h
    while index + l + 1 < N and tmp >= Hs[index + l + 1]:
        tmp = Hs[index + l + 1]
        l += 1
    res[index] = l

print(max(res))

Fixed submission:
N = int(input())
Hs = list(map(int, input().split()))
res = [0] * N

for index, h in enumerate(Hs):
    l = 0
    if index > 0:
        l = max(res[index - 1] - 3, 0)

    tmp = h
    while index + l + 1 < N and tmp >= Hs[index + l + 1]:
        tmp = Hs[index + l + 1]
        l += 1
    res[index] = l

print(max(res))
Buggy python submission (verdict: Runtime Error):
def gcd(a, b):
    mi = min(a, b)
    ma = max(a, b)
    r = ma % mi
    if r == 0:
        return mi
    gcd(mi, r)


N = input()
A = list(map(int, input().split()))

Sum = sum(A)
s = []
multi = 1.0
for t in A:
    multi = int((multi * t) / gcd(int(multi), int(t)))

for a in A:
    s.append(int(multi / a))

print(multi / sum(s))


Fixed submission:
N = input()
A = list(map(float, input().split()))

print(1 / sum(1 / x for x in A))

Buggy python submission (verdict: Runtime Error):
import math

# not solved by myself
N = input()
A = list(map(int, input().split()))

Sum = sum(A)
s = []
multi = 1.0
for t in A:
    multi = int((multi * t) / math.gcd(int(multi), int(t)))

for a in A:
    s.append(int(multi / a))

print(multi / sum(s))



Fixed submission:
N = input()
A = list(map(float, input().split()))

print(1 / sum(1 / x for x in A))

Buggy python submission (verdict: Runtime Error):
import numpy as np

# not solved by myself
N = input()
A = list(map(int, input().split()))

Sum = sum(A)
s = []
multi = 1
for t in A:
    multi = np.lcm(multi, t)

for a in A:
    s.append(int(multi / a))

print(multi / sum(s))


Fixed submission:
N = input()
A = list(map(float, input().split()))

print(1 / sum(1 / x for x in A))

Buggy python submission (verdict: Runtime Error):
import numpy as np

# not solved by myself
N = input()
A = list(map(int, input().split()))

Sum = sum(A)
s = []
multi = np.lcm.reduce(A)
for a in A:
    s.append(int(multi / a))


print(int(multi / sum(s)))



Fixed submission:
N = input()
A = list(map(float, input().split()))

print(1 / sum(1 / x for x in A))
Buggy python submission (verdict: Runtime Error):
N = int(input())

XYs = []

for i in range(N):
    x,y = map(int,input().split())
    tmp = (x,y)
    XYs.append(tmp)

distances = {}

for index_fr in range(N):
    for index_to in range(N):
        if index_fr == index_to:
            continue
        fr = XYs[index_fr]
        to = XYs[index_to]
        key = str(fr[0] - to[0]) + str(fr[1] - to[1])
        if key in distances.keys():
            distances[key] += 1
        else:
            distances[key] = 1



print(N - max(distances.values()))

Fixed submission:
N = int(input())

XYs = []

for i in range(N):
    x,y = map(int,input().split())
    tmp = (x,y)
    XYs.append(tmp)


if N == 1:
    print(1)
    exit()

distances = {}

for index_fr in range(N):
    for index_to in range(N):
        if index_fr == index_to:
            continue
        fr = XYs[index_fr]
        to = XYs[index_to]
        key = str(fr[0] - to[0]) + str(fr[1] - to[1])
        if key in distances.keys():
            distances[key] += 1
        else:
            distances[key] = 1


print(N - max(distances.values()))
Buggy python submission (verdict: Time Limit Exceeded):
N,M = map(int,input().split())

cards = [x for x in range(N)]

tmp = cards
for i in range(M):
    L,R = map(int,input().split())
    tmp = list(filter(lambda x: L - 1 <= x <= R - 1,tmp))

print(len(tmp))


Fixed submission:
N,M = map(int,input().split())

cards = [x for x in range(N)]

tmp = cards
Ls = []
Rs = []
for i in range(M):
    L,R = map(int,input().split())
    Ls.append(L - 1)
    Rs.append(R - 1)

print(max(min(Rs) - max(Ls) + 1,0))
Buggy python submission (verdict: Runtime Error):
#=map(int,input().strip().split())
#=int(input().strip())
#=list(map(int,input().strip().split()))
S = input()

subs = []
tmp = []
for s in S:
    if "A" == s or "C" == s or "G"== s or "T" == s:
        tmp.append(s)
    else:
        subs.append(tmp)
        tmp = []
rs = sorted(subs,key=lambda x: len(x),reverse=True)
print(len(rs[0]))



Fixed submission:
#N,Q =map(int,input().strip().split())
#=int(input().strip())
#=list(map(int,input().strip().split()))
S = input()

#for i in range(0,Q):


subs = []
tmp = []
for s in S:
    if "A" == s or "C" == s or "G"== s or "T" == s:
        tmp.append(s)
    else:
        subs.append(tmp)
        tmp = []

subs.append(tmp)
if len(subs) == 0:
    print("0")
    exit()

rs = sorted(subs,key=lambda x: len(x),reverse=True)
print(len(rs[0]))
Buggy python submission (verdict: Runtime Error):
N,Q =map(int,input().strip().split())
#=int(input().strip())
#=list(map(int,input().strip().split()))
S = input()

count = [0]
for i in range(0,N ):
    if S[i] == "A" and S[i + 1] == "C":
        count.append(count[i] + 1)
    else:
        count.append(count[i])


for i in range(0,Q):
    l,r = map(int,input().strip().split())
    if r > len(count):
        r = len(count)
    if l == 0:
        l += 1
    print(count[r - 1] - count[l - 1])



Fixed submission:
N,Q =map(int,input().strip().split())
#=int(input().strip())
#=list(map(int,input().strip().split()))
S = input()

count = [0]
for i in range(0,N - 1):
    if S[i] == "A" and S[i + 1] == "C":
        count.append(count[i] + 1)
    else:
        count.append(count[i])


for i in range(0,Q):
    l,r = map(int,input().strip().split())
    if r > len(count):
        r = len(count)
    if l == 0:
        l += 1
    print(count[r - 1] - count[l - 1])

Buggy python submission (verdict: Time Limit Exceeded):
N,Q =map(int,input().strip().split())
#=int(input().strip())
#=list(map(int,input().strip().split()))
S = input()

count = []
for i in range(1,N + 1):
    count.append(S[0:i].count("AC"))


for i in range(0,Q):
    l,r = map(int,input().strip().split())
    if r > len(count):
        r = len(count)
    print(count[r - 1] - count[l - 1])



Fixed submission:
N,Q =map(int,input().strip().split())
#=int(input().strip())
#=list(map(int,input().strip().split()))
S = input()

count = [0]
for i in range(0,N - 1):
    if S[i] == "A" and S[i + 1] == "C":
        count.append(count[i] + 1)
    else:
        count.append(count[i])


for i in range(0,Q):
    l,r = map(int,input().strip().split())
    if r > len(count):
        r = len(count)
    if l == 0:
        l += 1
    print(count[r - 1] - count[l - 1])
Buggy python submission (verdict: Runtime Error):
N = int(input())
S = input().strip()
S += "aaaa"

def tree(N,s,index):
  if N <= index:
      if len(s) > 0:
          return 1
      else:
          return 0

  if S[index] in s:
      return tree(N,s, index + 1)
  else:
      return tree(N,s, index + 1) + tree(N,s + S[index], index + 1)


print(tree(N,"",0) % 1000000007)




Fixed submission:
N = int(input())
S = input()

words = {}

for s in S:
    if s in words.keys():
        words[s] += 1
    else:
        words[s] = 2

res = 1
for k in words.keys():
    res *= words[k]

print((res - 1) % 1000000007)

Buggy python submission (verdict: Runtime Error):
N = int(input())
S = input().strip()

def tree(N,s,index):
  if N <= index:
      if len(s) > 0:
          return 1
      else:
          return 0

  if S[index] in s:
      return tree(N,s, index + 1)
  else:
      return tree(N,s, index + 1) + tree(N,s + S[index], index + 1)


print(tree(N,"",0) % 1000000007)




Fixed submission:
N = int(input())
S = input()

words = {}

for s in S:
    if s in words.keys():
        words[s] += 1
    else:
        words[s] = 2

res = 1
for k in words.keys():
    res *= words[k]

print((res - 1) % 1000000007)

Buggy python submission (verdict: Runtime Error):
N = int(input())
S = input().strip()

def tree(N,s,index):
  if N <= index:
      if len(s) > 0:
          return 1
      else:
          return 0

  if S[index] in s:
      return tree(N,s, index + 1)
  else:
      return tree(N,s, index + 1) + tree(N,s + S[index], index + 1)


print(tree(N,"",0) % 1000_000_007)




Fixed submission:
N = int(input())
S = input()

words = {}

for s in S:
    if s in words.keys():
        words[s] += 1
    else:
        words[s] = 2

res = 1
for k in words.keys():
    res *= words[k]

print((res - 1) % 1000000007)

Buggy python submission (verdict: Runtime Error):
N = int(input())
S = input().strip()

def tree(N,s,index):
  if N <= index:
      if len(s) > 0:
          return 1
      else:
          return 0

  if S[index] in s:
      return tree(N,s, index + 1)
  else:
      return tree(N,s, index + 1) + tree(N,s + S[index], index + 1)


print(tree(N,"",0))




Fixed submission:
N = int(input())
S = input()

words = {}

for s in S:
    if s in words.keys():
        words[s] += 1
    else:
        words[s] = 2

res = 1
for k in words.keys():
    res *= words[k]

print((res - 1) % 1000000007)

Buggy python submission (verdict: Runtime Error):
import math

N = int(input())
S = input().strip()

def tree(N,s,index):
  if N == index:
      if len(s) > 0:
          return 1
      else: return 0

  if S[index] in s:
      return tree(N,s, index + 1)
  else:
      return tree(N,s, index + 1) + tree(N,s + S[index], index + 1)


print(tree(N,"",0))




Fixed submission:
N = int(input())
S = input()

words = {}

for s in S:
    if s in words.keys():
        words[s] += 1
    else:
        words[s] = 2

res = 1
for k in words.keys():
    res *= words[k]

print((res - 1) % 1000000007)