qyliang/CodeNanoFix huggingface dataset:
Buggy code:
import sys

#+++++
		
def main():
	n = int(input())
	s = input()
	count=0
	for i in range(1000):
		ss=str(i)
		if i < 10:
			ss = '00'+ss
		elif i < 100:
			ss='0'+ss
			
		if ss[0] in s:
			iia = s.index(ss[0])
		else:
			continue
		#pa(ii)
		if ss [1] in s[iia+1:]:
			iib = s[iia+1:].index(ss[1])+iia+1
		else:
			continue
		#pa(ii)
		if ss[2] in s[iib + 1:]:
			iic = s[iib+1:].index(ss[2])+iia+iib
		else:
			continue
			
		pa((ss,i))
		pa((iia,iib,iic,s[iia],s[iib],s[iic]))
		count+=1
			
	print(count)
	
	
#+++++
isTest=False

def pa(v):
	if isTest:
		print(v)

if __name__ == "__main__":
	if sys.platform =='ios':
		sys.stdin=open('inputFile.txt')
		isTest=True
	else:
		pass
		#input = sys.stdin.readline
			
	ret = main()
	if ret is not None:
		print(ret)

Fixed code:
import sys

#+++++
		
def main():
	n = int(input())
	s = input()
	count=0
	for i in range(1000):
		ss=str(i)
		if i < 10:
			ss = '00'+ss
		elif i < 100:
			ss='0'+ss
			
		if ss[0] in s:
			iia = s.index(ss[0])
		else:
			continue
		#pa(ii)
		if ss[1] in s[iia+1:]:
			iib = s[iia+1:].index(ss[1])+iia+1
		else:
			continue
		#pa(ii)
		if ss[2] in s[iib + 1:]:
			iic = s[iib+1:].index(ss[2])+iib+1
		else:
			continue
			
		#pa((ss,i))
		#pa((iia,iib,iic,s[iia],s[iib],s[iic]))
		count+=1
			
	print(count)
	
	
#+++++
isTest=False

def pa(v):
	if isTest:
		print(v)

if __name__ == "__main__":
	if sys.platform =='ios':
		sys.stdin=open('inputFile.txt')
		isTest=True
	else:
		pass
		#input = sys.stdin.readline
			
	ret = main()
	if ret is not None:
		print(ret)
Buggy code:
N = int(input())
S = input()
def solve():
    ans = 0
    for i in range(1000):
        t = str(i).zfill(3)
        t_index = 0 
        for s_index in range(N):
            if s[s_index] == t[t_index]:
                t_index += 1
                if t_index == 3:
                    break
        if t_index == 3:
            ans += 1
    print(ans)
solve()

Fixed code:
def solve():
    ans = 1
    N = int(input())
    s = input()
    ans = 0
    for i in range(1000):
        t = str(i).zfill(3)
        t_index = 0 
        for s_index in range(N):
            if s[s_index] == t[t_index]:
                t_index += 1
                if t_index == 3:
                    break
        if t_index == 3:
            ans += 1
    print(ans)
solve()
Buggy code:
n=int(input())
S=input()
l=[]
for i in range(26):
    num=str(i).zfill(3)
    s=S
    if s.find(num[0])==-1:
        continue
    s=s[s.index(num[0])+1:]
    if s.find(num[1])==-1:
        continue
    s=s[s.index(num[1])+1:]
    if s.find(num[2])==-1:
        continue
    l.append(num)
print(len(set(l)))


Fixed code:
n=int(input())
S=input()
l=[]
for i in range(10**3):
    num=str(i).zfill(3)
    s=S
    if s.find(num[0])==-1: continue
    s=s[s.index(num[0])+1:]
    if s.find(num[1])==-1: continue
    s=s[s.index(num[1])+1:]
    if s.find(num[2])==-1: continue
    l.append(num)
print(len(set(l)))
Buggy code:
N = int(input())
S = input()

from itertools import product

p = product([str(i) for i in range(10)], repeat=3)

ans = 0
for i,j,k in p:
  x = S.find(i)
  if x<0:
    continue
  y = x + S[x+1:].find(j)
  if y<0:
    continue
  z = x + y + S[y+1:].find(k)
  if z<0:
    continue
  ans += 1
print(ans)
    

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

from itertools import product

p = product([str(i) for i in range(10)], repeat=3)

ans = 0
for i,j,k in p:
  x = S.find(i)
  if x<0:
    continue
  y = S[x+1:].find(j)
  if y<0:
    continue
  z = S[x+y+2:].find(k)
  if z<0:
    continue
  #print(i,j,k, S, S[x+1:],S[x+y+2:])
  ans += 1
print(ans)
Buggy code:
n = int(input())
s = input()

pins = []
for i in range(1000):
    i = str(i)
    if len(i) == 1:
        pins.append(str('00')+i)
    elif len(i) == 2:
        pins.append(str('0')+i)
    else:
        pins.append(i)

ans = 0
for pin in pins:
    c = 0
    for i in s:
        if pin[c] == i:
            c += 1
        if c == 3:
            ans += 1
            break

print(pins)

Fixed code:
n = int(input())
s = input()

pin = []
for i in range(1000):
    i = str(i)
    if len(i) == 1:
        i = '00' + i
    elif len(i) == 2:
        i = '0' + i
    pin.append(i)

ans = 0
for i in pin:
    c = 0
    for j in s:
        if j == i[c]:
            c += 1
        if c == 3:
            ans += 1
            break
print(ans)
Buggy code:
import sys
input = sys.stdin.readline


def main():
    N = int(input())
    S = input().strip()
    ans = 0
    for i in range(1000):
        s = "{:03}".format(i)
        a = S.find(s[0])
        b = S.find(s[1], a+1)
        c = S.find(s[2], b+1)
        if c >= 0:
            ans += 1
    print(ans)


if __name__ == '__main__':
    main()


Fixed code:
import sys
input = sys.stdin.readline


def main():
    N = int(input())
    S = input().strip()
    ans = 0
    for i in range(1000):
        s = "{:03}".format(i)
        a = S.find(s[0])
        b = S.find(s[1], a+1)
        c = S.find(s[2], b+1)
        if a >= 0 and b >= 0 and c >= 0 and (a < b < c):
            ans += 1
    print(ans)


if __name__ == '__main__':
    main()
Buggy code:
n = int(input())
s = input()

ans = 0
for i in range(0,10):
    for j in range(0,10):
        for k in range(0,10):
            p1 = s.find(str(i))
            if p1 == -1:
                continue
            p2 = s.find(str(j),start=p1+1)
            if p2 = -1:
                continue
            if s.find(str(k),start=p2+1) != -1:
                ans += 1

print(ans)

Fixed code:
n = int(input())
s = input()

ans = 0
for i in range(0,10):
    for j in range(0,10):
        for k in range(0,10):
            p1 = s.find(str(i))
            if p1 == -1:
                continue
            p2 = s.find(str(j),p1+1)
            if p2 == -1:
                continue
            if s.find(str(k),p2+1) != -1:
                ans += 1

print(ans)
Buggy code:
import collections
N = int(input())
S = input()
S_list = [S[i] for i in range(N)]
S_c = collections.Counter(S_list)
list12 = []
list1 = []

ans = 0
for i in range(N-2):
    s1 = S_list[i]
    S_c[s1] = S_c[s1]-1
    S_c23 = S_c.copy()
    list1.append(s1)
    
    if s1 in list1:
        continue
        
    for j in range(i+1,N-1):
        s2 = S_list[j]

        S_c23[s2] = S_c23[s2] - 1
        if (s1+s2) in list12:
            continue
        else:
            list12.append(s1+s2)
            for key in S_c23.keys():
                if S_c23[key] != 0:
                    ans+=1
print(ans)

Fixed code:
import collections
N = int(input())
S = input()
S_list = [S[i] for i in range(N)]
S_c = collections.Counter(S_list)
list12 = []
list1 = []

ans = 0
for i in range(N-2):
    s1 = S_list[i]

    S_c[s1] = S_c[s1]-1
    if s1 in list1:
        continue

    S_c23 = S_c.copy()
    list1.append(s1)
    for j in range(i+1,N-1):
        s2 = S_list[j]
        
        S_c23[s2] = S_c23[s2] - 1
        if (s1+s2) in list12:
            continue
        else:
            list12.append(s1+s2)
            for key in S_c23.keys():
                if S_c23[key] != 0:
                    ans+=1
print(ans)
Buggy code:
# -*- coding: utf-8 -*-

N = int(input())
S = list(input())

ans = 0
for i in range(1000):
    pw = list("{0:03d}".format(i))

    if pw[0] in S:
        w1 = S.index(pw[0])
        if pw[1] in S[w1+1:]:
            w2 = S.index(pw[1])
            if pw[2] in S[w2+1:]:
                ans += 1

print(ans)


Fixed code:
# -*- coding: utf-8 -*-

N = int(input())
S = list(input())

ans = 0
for i in range(1000):
    pw = list("{0:03d}".format(i))

    if pw[0] in S:
        w1 = S.index(pw[0])
        if pw[1] in S[w1+1:]:
            w2 = w1+1 + S[w1+1:].index(pw[1])
            if pw[2] in S[w2+1:]:
                ans += 1

print(ans)
Buggy code:
n = int(input())
s = input()
ans = 0

for i in range(1000):
    i = str(i).zfill(3)

    first = s.find(i[0])
    second = s.find(i[1])
    third = s.find(i[2])

    if first != -1 and second != -1 and third != -1:
        ans += 1

print(ans)

Fixed code:
n = int(input())
s = input()
ans = 0

for i in range(1000):
    i = str(i).zfill(3)

    first = s.find(i[0])
    if first == -1:
        continue

    second = s.find(i[1], first+1)
    if second == -1:
        continue

    third = s.find(i[2], second+1)

    if third != -1:
        ans += 1

print(ans)
Buggy code:
n=int(input())
s=input()
ans=0
fi=lambda x,y:x.find(str(y))
for i in range(10):
  f1=fi(s,i)
  if f1==-1:
    continue
  s1=s[f1+1:]
  for j in range(10):
    f2=fi(s1,j)
    if f2==-1:
      continue
    s2=s1[f2+1:]
    for k in range(10):
      f3=fi(s1,k)
      if f3>0:
        ans+=1
print(ans)

Fixed code:
n=int(input())
s=input()
ans=0
fi=lambda x,y:x.find(str(y))
for i in range(10):
  f1=fi(s,i)
  if f1==-1:
    continue
  s1=s[f1+1:]
  for j in range(10):
    f2=fi(s1,j)
    if f2==-1:
      continue
    s2=s1[f2+1:]
    for k in range(10):
      f3=fi(s2,k)
      if f3>=0:
        ans+=1
print(ans)
Buggy code:
n,S,r=int(input()),input(),0
dp1=[0]*n
dp2=[0]*n
d1=set()
d2=set()
cs=[0]*10
for i in range(n):
    dp1[i] = len(d1)
    d1.add(S[i])
for i in range(n):
    j = n-i-1
    dp2[j] = len(d2)
    r += dp1[i]*(dp2[j]-dp2[cs[int(S[j])]])
    d2.add(S[j])
    cs[int(S[j])] = j
print(r)


Fixed code:
n,S,r=int(input()),input(),0
dp1=[0]*n
dp2=[0]*n
d1=set()
d2=set()
cs=[0]*10
for i in range(n):
    dp1[i] = len(d1)
    d1.add(S[i])
for i in range(n):
    j = n-i-1
    dp2[j] = len(d2)
    r += dp1[j]*(dp2[j]-dp2[cs[int(S[j])]])
    d2.add(S[j])
    cs[int(S[j])] = j
print(r)
Buggy code:
n = int(input())
s = input()

from collections import Counter
left = Counter('')
right = Counter(s[1:])

ans = set()
for i in range(10):
    lefts[str(i)] = []
    rights[str(i)] = []

for i in range(1, n-1):
    left[s[i-1]] += 1
    right[s[i]] -= 1
    # print(left, right)

    left_u = []
    for k in left.keys():
        if left[k] >= 1:
            left_u.append(k)
    right_u = []
    for k in right.keys():
        if right[k] >= 1:
            right_u.append(k)

    for l in left_u:
        for r in right_u:
            tmp = l + s[i] + r
            ans.add(tmp)

print(len(ans))


Fixed code:
n = int(input())
s = input()

from collections import Counter
left = Counter('')
right = Counter(s[1:])

ans = set()
for i in range(1, n-1):
    left[s[i-1]] += 1
    right[s[i]] -= 1
    # print(left, right)

    left_u = []
    for k in left.keys():
        if left[k] >= 1:
            left_u.append(k)
    right_u = []
    for k in right.keys():
        if right[k] >= 1:
            right_u.append(k)

    for l in left_u:
        for r in right_u:
            tmp = l + s[i] + r
            ans.add(tmp)

print(len(ans))
Buggy code:
n = int(input())
s = input()
ans = 0
for i in range(10):
    for j in range(10):
        for k in range(10):
            for f in range(n):
                if p == 0 and s[f] == str(i):
                    p = 1
                elif p == 1 and s[f] == str(j):
                    p = 2
                elif p == 2 and s[f] == str(k):
                    ans += 1
                    break
print(ans)

Fixed code:
n = int(input())
s = input()
ans = 0
for i in range(10):
    for j in range(10):
        for k in range(10):
            p=0
            for f in range(n):
                if p == 0 and s[f] == str(i):
                    p = 1
                elif p == 1 and s[f] == str(j):
                    p = 2
                elif p == 2 and s[f] == str(k):
                    ans += 1
                    break
print(ans)
Buggy code:
N = int(input())
S = input()

s = set()
for i in range(0, N - 2):
    s1 = S[i]
    if s1 in s:
        continue
    s.add(s1)
    for j in range(i + 1, N - 1):
        s2 = s1 + S[j]
        if s2 in s:
            continue
        s.add(s2)
        for k in range(j + 1, N):
            s3 = s2+S[k]
            s.add(s3)

print(len(s))

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

s = set()
sub = set()
for i in range(0, N - 2):
    s1 = S[i]
    if s1 in sub:
        continue
    sub.add(s1)
    for j in range(i + 1, N - 1):
        s2 = s1 + S[j]
        if s2 in sub:
            continue
        sub.add(s2)
        for k in range(j + 1, N):
            s3 = s2+S[k]
            s.add(s3)

print(len(s))
Buggy code:
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
N,S = read().decode('utf-8').split()
print(N,S)
count = 0
for i in range(1000):
  s = str(i).zfill(3)
  index_all = 0
  for j in range(3):
    index = S[index_all:].find(s[j])
    if index == -1:
      break
    index_all += index+1
    if j ==2:
      count += 1
print(count)

Fixed code:
import sys
read = sys.stdin.buffer.read
readline = sys.stdin.buffer.readline
readlines = sys.stdin.buffer.readlines
N,S = read().decode('utf-8').split()
count = 0
for i in range(1000):
  s = str(i).zfill(3)
  index_all = 0
  for j in range(3):
    index = S[index_all:].find(s[j])
    if index == -1:
      break
    index_all += index+1
    if j ==2:
      count += 1
print(count)
Buggy code:
import collections
import copy

N = int(input().split()[0])
S = input()

counter = collections.Counter(S)
total = 0
done_list = []
for i, ch in enumerate(S[::-1]):  # 3 * 10 ** 4
    if ch in done_list:
        continue
    sub_done_list = []
    counter[ch] = counter[ch] - 1
    if counter[ch] < 1:
        del counter[ch]
    sub_counter = copy.copy(counter)
    for ch_2 in S[:i:-1]:  # 3 * 10 ** 4
        if ch_2 in sub_done_list:
            continue
        sub_done_list.append(ch_2)
        sub_counter[ch_2] = sub_counter[ch_2] - 1
        if sub_counter[ch_2] < 1:
            del sub_counter[ch_2]
        total += len(sub_counter.keys())

    done_list.append(ch)

ans = total

print(ans)


Fixed code:
import collections
import copy

N = int(input().split()[0])
S = input()

counter = collections.Counter(S)
total = 0
done_list = []

for i, ch in enumerate(S[::-1]):  # 3 * 10 ** 4
    if ch in done_list:
        counter[ch] = counter[ch] - 1
        if counter[ch] < 1:
            del counter[ch]
        continue
    sub_done_list = []
    counter[ch] = counter[ch] - 1
    if counter[ch] < 1:
        del counter[ch]
    sub_counter = copy.copy(counter)

    for ch_2 in S[N - (i + 1) - 1 :: -1]:  # 3 * 10 ** 4
        if ch_2 in sub_done_list:
            sub_counter[ch_2] = sub_counter[ch_2] - 1
            if sub_counter[ch_2] < 1:
                del sub_counter[ch_2]
            continue
        sub_done_list.append(ch_2)
        sub_counter[ch_2] = sub_counter[ch_2] - 1
        if sub_counter[ch_2] < 1:
            del sub_counter[ch_2]
        total += len(sub_counter.keys())

    done_list.append(ch)

ans = total

print(ans)
Buggy code:
n = int(input())
s = [int(i) for i in input()]

l = [str(i).zfill(3) for i in range(0,1000)]

ct = 0
for i in l:
  n0 = s.find(a[0])
  if n0==-1:
    continue
  n1 = s.find(a[1], n0+1)
  if n1==-1:
    continue
  n2 = s.find(a[2], n1+1)
  if n2!=-1:
    c += 1
   
print(ct)

Fixed code:
n = int(input())
s = input()

l = [str(i).zfill(3) for i in range(0,1000)]

ct = 0
for i in l:
  n0 = s.find(i[0])
  if n0==-1:
    continue
  n1 = s.find(i[1], n0+1)
  if n1==-1:
    continue
  n2 = s.find(i[2], n1+1)
  if n2!=-1:
    ct += 1
   
print(ct)
Buggy code:
a = int(input())
b = input()
def my_count(l):
  p = 0
  for i in range(10):
    i = str(i)
    if i in l:
      p = p + 1
  return p
s = []
ans = 0
for i in range(10):
  k = str(i)  
  s.append(b.find(k))
  if s[i] >= 0:
    for j in range(10):
      h = str(j)  
      y = b[s[i]+1:len(b)]
      t = y.find(h)
      if t >= 0:
        c = y[t+1:len(b)]
        ans = ans + my_count(c)
print(s)
print(ans)

Fixed code:
a = int(input())
b = input()
def my_count(l):
  p = 0
  for i in range(10):
    i = str(i)
    if i in l:
      p = p + 1
  return p
s = []
ans = 0
for i in range(10):
  k = str(i)  
  s.append(b.find(k))
  if s[i] >= 0:
    for j in range(10):
      h = str(j)  
      y = b[s[i]+1:len(b)]
      t = y.find(h)
      if t >= 0:
        c = y[t+1:len(b)]
        ans = ans + my_count(c)
print(ans)
Buggy code:
import numpy as np

N = int(input())
S = input()
d = {}
for i in range(N):
  c = S[i]
  if c not in d.keys():
    d[c] = [i]
  else:
    if len(d[c])>=3:
      continue
    else:
      d[c].append(i)
#print(d)

ans=0
for i in range(1000):
  code = str(i)
  while len(code)<3:
    code = "0" + code
  #print(len(code))
    #continue
  if code[0] not in d.keys() or code[1] not in d.keys() or code[2] not in d.keys():
    continue
  first = np.array(d[code[0]])
  current = d[code[0]][0]
  
  second = np.array(d[code[1]])
  if len(second[second>current])==0:
    continue
  current = second[second>current].min()
  
  third = np.array(d[code[2]])
  if len(third[third>current])==0:
    continue
  ans+=1
  
print(ans)
#print(d)
  
    
    
  
  
  
    
  

Fixed code:
import numpy as np

N = int(input())
S = input()
d = {}
for i in range(N):
  c = S[i]
  if c not in d.keys():
    d[c] = [i]
  else:
    #if len(d[c])>=3:
    #  continue
    #else:
    d[c].append(i)
#print(d)

ans=0
for i in range(1000):
  code = str(i)
  while len(code)<3:
    code = "0" + code
  if code[0] not in d.keys() or code[1] not in d.keys() or code[2] not in d.keys():
    continue
  first = np.array(d[code[0]])
  current = first[0]
  
  second = np.array(d[code[1]])
  if len(second[second>current])==0:
    continue
  current = second[second>current][0]
  
  third = np.array(d[code[2]])
  if len(third[third>current])==0:
    continue
  ans+=1
  
print(ans)
Buggy code:
N = int(input())
S = input()

cnt = [0]*11
i = 0
T = ''
for s in S:
  cnt[int(s)]+=1
  if min(cnt)<=3:
    T += s
print(T)
ans = 0
P = []
for a in range(10):
  A = str(a)
  k = 0
  ind1 = -1
  while k < len(T)-2:
    t = T[k]
    if A == t:
      ind1 = k
      break
    k += 1
  if ind1 == -1:
    continue
  for b in range(10):
    B = str(b)
    l = ind1+1
    ind2 = -1
    while l < len(T)-1:
      t = T[l]
      if B == t:
        ind2 = l
        break
      l += 1
    #print(a,b,ind1,ind2)
    if ind2 == -1:
      continue
    for c in range(10):
      C = str(c)
      m = ind2+1
      while m < len(T):
        t = T[m]
        if C == t:
          ans += 1
          break
        m += 1
print(ans)

#print(*ans, sep='/n')

Fixed code:
N = int(input())
S = input()
 
cnt = [0]*11
i = 0
T = ''
for s in S:
  cnt[int(s)]+=1
  if min(cnt)<=3:
    T += s
#print(T)
ans = 0
P = []
for a in range(10):
  A = str(a)
  k = 0
  ind1 = -1
  while k < len(T)-2:
    t = T[k]
    if A == t:
      ind1 = k
      break
    k += 1
  if ind1 == -1:
    continue
  for b in range(10):
    B = str(b)
    l = ind1+1
    ind2 = -1
    while l < len(T)-1:
      t = T[l]
      if B == t:
        ind2 = l
        break
      l += 1
    #print(a,b,ind1,ind2)
    if ind2 == -1:
      continue
    for c in range(10):
      C = str(c)
      m = ind2+1
      while m < len(T):
        t = T[m]
        if C == t:
          ans += 1
          break
        m += 1
print(ans)
Buggy code:
n = int(input())
s = input()

dp = [[0]*10 for _ in range(10)]

count = [0]*10

result = []

for i in range(n-2):
    if count[int(s[i])]==0:
        for j in range(i+1,n-1):
            if dp[int(s[i])][int(s[j])]==0:
                tem = "".join(set(s[j+1:]))
                for k in range(len(tem)):
                    result.append(s[i]+s[j]+tem[k])
                dp[int(s[i])][int(s[j])]=1
        count[int(s[i])]=1

Fixed code:
n = int(input())
s = input()

dp = [[0]*10 for _ in range(10)]

count = [0]*10

result = []

for i in range(n-2):
    if count[int(s[i])]==0:
        for j in range(i+1,n-1):
            if dp[int(s[i])][int(s[j])]==0:
                tem = "".join(set(s[j+1:]))
                for k in range(len(tem)):
                    result.append(s[i]+s[j]+tem[k])
                dp[int(s[i])][int(s[j])]=1
        count[int(s[i])]=1

ans = set(result)
print(len(ans))
Buggy code:
n = int(input())
s = list(map(int, list(input())))

def aruka(a,b,c):
    i = 0
    while i <= n:
        if i == n:
            return False
        if s[i] == a:
            i += 1
            break
        i += 1
    while i <= n:
        if i == n:
            return False
        if s[i] == b:
            i += 1
            break
        i += 1
    while i <= n:
        if i == n:
            return False
        if s[i] == c:
            return True
        i += 1


ans = 0

for i in range(10):
    for j in range(10):
        for k in range(10):
            if aruka(i,j,k):
                ans += 1

Fixed code:
n = int(input())
s = list(map(int, list(input())))

def aruka(a,b,c):
    i = 0
    while i <= n:
        if i == n:
            return False
        if s[i] == a:
            i += 1
            break
        i += 1
    while i <= n:
        if i == n:
            return False
        if s[i] == b:
            i += 1
            break
        i += 1
    while i <= n:
        if i == n:
            return False
        if s[i] == c:
            return True
        i += 1


ans = 0

for i in range(10):
    for j in range(10):
        for k in range(10):
            if aruka(i,j,k):
                ans += 1

print(ans)
Buggy code:
N = int(input())
S = input()

ans = 0

for i in range(10):
    a = S.find(str(i))
    if a == -1:
        continue
    for j in range(10):
        b = S.find(str(j),a+1)
        for k in range(10):
            if b == -1:
                continue
            c = S.find(str(k),b+1)
            if c > b :
                ans +=1
                print(i,j,k)
print(ans)

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

ans = 0

for i in range(10):
    a = S.find(str(i))
    if a == -1:
        continue
    for j in range(10):
        b = S.find(str(j),a+1)
        for k in range(10):
            if b == -1:
                continue
            c = S.find(str(k),b+1)
            if c > b :
                ans +=1
print(ans)
Buggy code:
def ok(target, S):
    pos = 0
    for t in target:
        if t in S[pos:]:
            pos = S[pos:].index(t)
        else:
            return False
    return True


N = int(input())
S = input()
ans = 0

for i in range(0, 999+1):
    target = str(i).zfill(3)
    ans += ok(target, S)

print(ans)


Fixed code:
def ok(target, S):
    for t in target:
        if t in S:
            S = S[S.index(t)+1:]
        else:
            return False
    return True


N = int(input())
S = input()
ans = 0

for i in range(0, 999+1):
    target = str(i).zfill(3)
    ans += ok(target, S)

print(ans)
Buggy code:
#!/usr/bin/env/ python3
N = int(input())
S = input()
#A, B, C = input().split()
#A, B, C, X, Y = map(int, input().split())

#N = int(input())
#H, W = map(int, input().split())
#S = [input() for _ in range(H)]
#print(A[0][0])

ans = 0
for tmp_num in range(1000):
    tmp = str(tmp_num).zfill(3)
    digit = 0
    for i in range(N):
        if S[i] == tmp[digit]:
          digit += 1
	      if digit == 3:
            ans += 1
            break
print(ans)


Fixed code:
#!/usr/bin/env/ python3
N = int(input())
S = input()
#A, B, C = input().split()
#A, B, C, X, Y = map(int, input().split())

#N = int(input())
#H, W = map(int, input().split())
#S = [input() for _ in range(H)]
#print(A[0][0])

ans = 0
for tmp_num in range(1000):
    tmp = str(tmp_num).zfill(3)
    digit = 0
    for i in range(N):
        if S[i] == tmp[digit]:
            digit += 1
            if digit == 3:
                ans += 1
                break
print(ans)
Buggy code:
N=int(input())
S=input()
ans=0
for i in range(10):
  str_i = str(i)
  i_index==S.find(str_i)
  if i_index==-1:
    continue
  for j in range(10):
    str_j=str(j)
    j_index=S.find(str_j, i_index+1)
    if j_index==-1:
      continue
    for k in range(10):
      str_k=str(k)
      k_index=S.find(str_k, j_index+1) 
      if k_index!=-1:
        ans+=1
print(ans)

Fixed code:
N=int(input())
S=input()
ans=0
for i in range(10):
  str_i = str(i)
  i_index=S.find(str_i)
  if i_index==-1:
    continue
  for j in range(10):
    str_j=str(j)
    j_index=S.find(str_j, i_index+1)
    if j_index==-1:
      continue
    for k in range(10):
      str_k=str(k)
      k_index=S.find(str_k, j_index+1) 
      if k_index!=-1:
        ans+=1
print(ans)