qyliang/CodeNanoFix huggingface dataset:
Buggy code:
import itertools

n = int(input())
M=0
A=0
R=0
C=0
H=0
cnt=0
for _ in range(n):
    newstr = str(input())
    if newstr[0] == "M":
        M+=1
    elif  newstr[0] == "A":
        A+=1
    elif  newstr[0] == "R":
        R+=1
    elif  newstr[0] == "C":
        C+=1
    elif  newstr[0] == "H":
        H+=1
lis = [M,A,R,C,H]
#print(lis)
lis2 = [_ for _ in lis if _ != 0]
#print(lis2)
if len(lis2) < 3:
    print(0)
else:
    for i in itertools.combinations(lis2, r=3):
        cnt += i[0] * i[1] * i[2]
print(cnt)

Fixed code:
import itertools

n = int(input())
M=0
A=0
R=0
C=0
H=0
cnt=0
for _ in range(n):
    newstr = str(input())
    if newstr[0] == "M":
        M+=1
    elif  newstr[0] == "A":
        A+=1
    elif  newstr[0] == "R":
        R+=1
    elif  newstr[0] == "C":
        C+=1
    elif  newstr[0] == "H":
        H+=1
lis = [M,A,R,C,H]
#print(lis)
lis2 = [_ for _ in lis if _ != 0]
#print(lis2)
if len(lis2) < 3:
    print(0)
    exit()
else:
    for i in itertools.combinations(lis2, r=3):
        cnt += i[0] * i[1] * i[2]
print(cnt)
Buggy code:
import itertools
import collections

def main():
    n = int(input())
    S = [input()[0] for _ in range(n)]

    array = ['M','A','R','C','H']
    S_after = []
    for s in S:
        if s in array:
            S_after.append(s)
    if len(S_after) < 3:
        print(0)
    combs = itertools.combinations(set(S_after), 3)
    coll = collections.Counter(S_after)

    ans = 0
    for comb in combs:
        if comb[0] != comb[1] != comb[2]:
            ans += coll[comb[0]]*coll[comb[1]]*coll[comb[2]]
    print(ans)


if __name__ == '__main__':
    main()


Fixed code:
import itertools
import collections

def main():
    n = int(input())
    S = [input()[0] for _ in range(n)]

    array = ['M','A','R','C','H']
    S_after = []
    for s in S:
        if s in array:
            S_after.append(s)
    if len(S_after) < 3:
        print(0)
        return
    S_after_set = set(S_after)
    combs = itertools.combinations(S_after_set, 3)
    coll = collections.Counter(S_after)

    ans = 0
    for comb in combs:
        if comb[0] != comb[1] != comb[2]:
            ans += coll[comb[0]]*coll[comb[1]]*coll[comb[2]]
    print(ans)


if __name__ == '__main__':
    main()
Buggy code:
from collections import Counter
from math import factorial
N = int(input())
S = [input()[0:1:] for i in range(N)]

march = ["M","A","R","C","H"]
list = []
c = Counter(S)
for k,v in c.items():
    if k in march:
        list.append(v)

ans = 0
if len(list) >= 3:
    for i in range(len(list)):
        for j in range(len(list)-1):
            for k in range(len(list)-2):
                if (i != j+1) and (j+1 != k+2) and (k+2 != i) and (i<j+1) and (j<k+1):
                    ans += list[i] * list[j+1] * list[k+2]
                    print(ans,i,j+1,k+2)

print(ans)


Fixed code:
from collections import Counter
from math import factorial
N = int(input())
S = [input()[0:1:] for i in range(N)]

march = ["M","A","R","C","H"]
list = []
c = Counter(S)
for k,v in c.items():
    if k in march:
        list.append(v)

ans = 0
if len(list) >= 3:
    for i in range(len(list)):
        for j in range(len(list)-1):
            for k in range(len(list)-2):
                if (i != j+1) and (j+1 != k+2) and (k+2 != i) and (i<j+1) and (j<k+1):
                    ans += list[i] * list[j+1] * list[k+2]

print(ans)
Buggy code:
n=int(input())
d={'M':0,'A':0,'R':0,'C':0,'H':0}
for i in range(n):
  s=input()
  if s[0]=='M':
    d['M']+=1
  if s[0]=='A':
    d['A']+=1
  if s[0]=='R':
    d['R']+=1
  if s[0]=='C':
    d['C']+=1
  if s[0]=='H':
    d['H']+=1

ans=0
for i,j,k in combinations('MARCH',3):
  ans+=d[i]*d[j]*d[k]

print(ans)

Fixed code:
from itertools import combinations

n=int(input())
d={'M':0,'A':0,'R':0,'C':0,'H':0}
for i in range(n):
  s=input()
  if s[0]=='M':
    d['M']+=1
  if s[0]=='A':
    d['A']+=1
  if s[0]=='R':
    d['R']+=1
  if s[0]=='C':
    d['C']+=1
  if s[0]=='H':
    d['H']+=1

ans=0
for i,j,k in combinations('MARCH',3):
  ans+=d[i]*d[j]*d[k]

print(ans)
Buggy code:
from collections import defaultdict
import itertools

d = defaultdict(int)
N = int(input())
for i in range(N):
  s = input()[0].lower()
  d[s] += 1

n = [d['m'], d['a'], d['r'], d['r'], d['h']]
ans = 0

a = itertools.combinations(n, 3)
for aa in a:
  t = 1
  for aaa in aa:
    t *= aaa
  ans += t

print(ans)

Fixed code:
from collections import defaultdict
import itertools

d = defaultdict(int)
N = int(input())
for i in range(N):
  s = input()[0].lower()
  d[s] += 1

n = [d['m'], d['a'], d['r'], d['c'], d['h']]
ans = 0

a = itertools.combinations(n, 3)
for aa in a:
  t = 1
  for aaa in aa:
    t *= aaa
  ans += t

print(ans)
Buggy code:
import sys
from functools import reduce
import copy
import math
from pprint import pprint


sys.setrecursionlimit(4100000)


def inputs(num_of_input):
    ins = [input() for i in range(num_of_input)]
    return ins


def int_inputs(num_of_input):
    ins = [int(input()) for i in range(num_of_input)]
    return ins


def solve(inputs):
    persons = inputs
    N = 5
    kinds = {'M': 0, 'A': 0, 'R': 0, 'C': 0, 'H': 0, }
    for n in persons:
        if n[0] in kinds:
            kinds[n[0]] += 1
    kinds_list = list(kinds.keys())

    if len(persons) < 3:
        return 0

    pattern = 0
    for i in range(N-2):
        for j in range(i+1, N-1):
            for k in range(j+1, N):
                p1 = kinds_list[i]
                p2 = kinds_list[j]
                p3 = kinds_list[k]
                pattern += kinds[p1] * kinds[p2] * kinds[p3]
    return pattern


def string_to_int(string):
    return list(map(int, string.split()))


if __name__ == "__main__":
    N = int(input())
    ret = solve(inputs(5))
    print(ret)


Fixed code:
import sys
from functools import reduce
import copy
import math
from pprint import pprint


sys.setrecursionlimit(4100000)


def inputs(num_of_input):
    ins = [input() for i in range(num_of_input)]
    return ins


def int_inputs(num_of_input):
    ins = [int(input()) for i in range(num_of_input)]
    return ins


def solve(inputs):
    persons = inputs
    N = 5
    kinds = {'M': 0, 'A': 0, 'R': 0, 'C': 0, 'H': 0, }
    for n in persons:
        if n[0] in kinds:
            kinds[n[0]] += 1
    kinds_list = list(kinds.keys())

    if len(persons) < 3:
        return 0

    pattern = 0
    for i in range(N-2):
        for j in range(i+1, N-1):
            for k in range(j+1, N):
                p1 = kinds_list[i]
                p2 = kinds_list[j]
                p3 = kinds_list[k]
                pattern += kinds[p1] * kinds[p2] * kinds[p3]
    return pattern


def string_to_int(string):
    return list(map(int, string.split()))


if __name__ == "__main__":
    N = int(input())
    ret = solve(inputs(N))
    print(ret)
Buggy code:
N=int(input())
a=[]
for i in range(N):
    a.append(input())

import numpy as np
s=np.zeros(5)

for i in a:
    if i[0]=="M":
        s[0]+=1
    elif i[0]=="A":
        s[1]+=1
    elif i[0]=="R":
        s[2]+=1
    elif i[0]=="C":
        s[3]+=1
    elif i[0]=="H":
        s[4]+=1
    else:
        continue
b=np.unique(s)
c=0
if len(b)<3:
    print(0)
else:
    for i in range(0,3):
        for j in range(i+1,4):
            for k in range(j+1,5):
                c+=s[i]*s[j]*s[k]
print(int(c))   

Fixed code:
N=int(input())
a=[]
for i in range(N):
    a.append(input())

import numpy as np
s=np.zeros(5)

for i in a:
    if i[0]=="M":
        s[0]+=1
    elif i[0]=="A":
        s[1]+=1
    elif i[0]=="R":
        s[2]+=1
    elif i[0]=="C":
        s[3]+=1
    elif i[0]=="H":
        s[4]+=1
    else:
        continue
c=0

for i in range(5):
    for j in range(i+1,5):
        for k in range(j+1,5):
            c+=s[i]*s[j]*s[k]
print(int(c))
Buggy code:
x = input()
count = [0 for i in range(5)]
for i in x:
    name = input()
    if name[0] == 'M':
        count[0] += 1
    elif name[0] == 'A':
        count[1] += 1
    elif name[0] == 'R':
        count[2] += 1
    elif name[0] == 'C':
        count[3] += 1
    elif name[0] == 'H':
        count[4] += 1

p = [0, 0, 0, 0, 0, 0, 1, 1, 1, 2]
q = [1, 1, 1, 2, 2, 3, 2, 2, 3, 3]
r = [2, 3, 4, 3, 4, 4, 3, 4, 4, 4]
res = 0
for i in range(10):
    res += count[p[i]]*count[q[i]]*count[r[i]]

print(res)

Fixed code:
x = int(input())
count = [0 for i in range(5)]
for i in range(x):
    name = input()
    if name[0] == 'M':
        count[0] += 1
    elif name[0] == 'A':
        count[1] += 1
    elif name[0] == 'R':
        count[2] += 1
    elif name[0] == 'C':
        count[3] += 1
    elif name[0] == 'H':
        count[4] += 1

p = [0, 0, 0, 0, 0, 0, 1, 1, 1, 2]
q = [1, 1, 1, 2, 2, 3, 2, 2, 3, 3]
r = [2, 3, 4, 3, 4, 4, 3, 4, 4, 4]
res = 0
for i in range(10):
    res += count[p[i]]*count[q[i]]*count[r[i]]

print(res)
Buggy code:
import itertools
N = int(input())

num_dic = {'M': 0, 'A': 0, 'R': 0, 'C': 0, 'H': 0}
for i in range(N):
    S = input()
    if S[0] in num_dic.keys():
        num_dic[S[0]] += 1

ans = 0
print(num_dic)
for i, j, k in itertools.combinations(num_dic.keys(), 3):
    ans += num_dic[i] * num_dic[j] * num_dic[k]
print(ans)


Fixed code:
import itertools
N = int(input())

num_dic = {'M': 0, 'A': 0, 'R': 0, 'C': 0, 'H': 0}
for i in range(N):
    S = input()
    if S[0] in num_dic.keys():
        num_dic[S[0]] += 1

ans = 0
for i, j, k in itertools.combinations(num_dic.keys(), 3):
    ans += num_dic[i] * num_dic[j] * num_dic[k]
print(ans)
Buggy code:
import sys
from itertools import combinations
from collections import Counter
input = sys.stdin.readline


def log(*args):
    print(*args, file=sys.stderr)


def main():
    n = int(input().rstrip())
    s = [input()[0] for _ in range(n)]
    s = [v for v in range(n)]
    c = Counter(s)
    ans = 0
    for x, y, z in combinations('MARCH', 3):
        ans += c[x] * c[y] * c[z]
    print(ans)


if __name__ == '__main__':
    main()


Fixed code:
import sys
from itertools import combinations
from collections import Counter
input = sys.stdin.readline


def log(*args):
    print(*args, file=sys.stderr)


def main():
    n = int(input().rstrip())
    s = [input()[0] for _ in range(n)]
    s = [v for v in s if v in 'MARCH']
    c = Counter(s)
    ans = 0
    for x, y, z in combinations(c, 3):
        ans += c[x] * c[y] * c[z]
    print(ans)


if __name__ == '__main__':
    main()
Buggy code:
import itertools

N = int(input())

S = []
for _ in range(N):
    S.append(input())
    
M, A, R, C, H = [], [], [], [], []

march = ["M","A","R","C","H"]

for s in S:
    top = s[0]
    if top in march:
        if top == "M":
            M.append(s)
        elif top == "A":
            A.append(s)
        elif top == "R":
            R.append(s)
        elif top == "C":
            C.append(s)
        elif top == "H":
            H.append(s)

MARCH = [len(M), len(A), len(R), len(C), len(H)]

for i in range(len(MARCH)):
    if MARCH[i] == 0:
        del march[i]

if len(march) <= 2:
    print(0)

else:
    x = 0
    pattern = list(itertools.combinations(MARCH, 3))
    for i in pattern:
        x += i[0]*i[1]*i[2]
    print(x)
    

Fixed code:
import itertools

N = int(input())

S = []
for _ in range(N):
    S.append(input())
    
M, A, R, C, H = [], [], [], [], []

march = ["M","A","R","C","H"]

for s in S:
    top = s[0]
    if top in march:
        if top == "M":
            M.append(s)
        elif top == "A":
            A.append(s)
        elif top == "R":
            R.append(s)
        elif top == "C":
            C.append(s)
        elif top == "H":
            H.append(s)

MARCH = [len(M), len(A), len(R), len(C), len(H)]

if MARCH.count(0) >= 3:
    print(0)

else:
    x = 0
    pattern = list(itertools.combinations(MARCH, 3))
    for i in pattern:
        x += i[0]*i[1]*i[2]
    print(x)
Buggy code:
# n = int(input())
# arr = []
# for i in range(n):
#     arr += [list(input())]
n = 5
arr = [['Z','H'],['Z','N'],['Z','A'],['Z','O'],['Z','I']]

MARCH = [0] * 5    
    
for j in range(n):
    if arr[j][0] == 'M':
        MARCH[0] += 1
    elif arr[j][0] == 'A':
        MARCH[1] += 1
    elif arr[j][0] == 'R':
        MARCH[2] += 1
    elif arr[j][0] == 'C':
        MARCH[3] += 1
    elif arr[j][0] == 'H':
        MARCH[4] += 1

def C(a,b):
    aa = 1
    bb = 1
    for k in range(a-b+1, a+1):
        aa *= k
    for l in range(1, b+1):
        bb *= l
    return int(aa/bb)
        
ans = C(sum(MARCH), 3)

for m in range(5):
    if MARCH[m] == 2:
        ans -= C(sum(MARCH)-MARCH[m],1)
    elif MARCH[m] >= 3:
        ans -= C(MARCH[m],2) * C(sum(MARCH)-MARCH[m],1)
        ans -= C(MARCH[m],3)

print(ans)
    

Fixed code:
n = int(input())
arr = []
for i in range(n):
    arr += [list(input())]

MARCH = [0] * 5    
    
for j in range(n):
    if arr[j][0] == 'M':
        MARCH[0] += 1
    elif arr[j][0] == 'A':
        MARCH[1] += 1
    elif arr[j][0] == 'R':
        MARCH[2] += 1
    elif arr[j][0] == 'C':
        MARCH[3] += 1
    elif arr[j][0] == 'H':
        MARCH[4] += 1

def C(a,b):
    aa = 1
    bb = 1
    for k in range(a-b+1, a+1):
        aa *= k
    for l in range(1, b+1):
        bb *= l
    return int(aa/bb)
        
ans = C(sum(MARCH), 3)

for m in range(5):
    if MARCH[m] == 2:
        ans -= C(sum(MARCH)-MARCH[m],1)
    elif MARCH[m] >= 3:
        ans -= C(MARCH[m],2) * C(sum(MARCH)-MARCH[m],1)
        ans -= C(MARCH[m],3)

print(ans)
Buggy code:
N = int(input())
num = [0,0,0,0,0]
for i in range(N):
  a = input()
  if a[0]=='M':
    num[0] += 1
  if a[0]=='A':
    num[1] += 1
  if a[0]=='R':
	num[2] += 1
  if a[0]=='C':
	num[3] += 1
  if a[0]=='H':
	num[4] += 1


num_1 = num[0]*num[1]*num[2]
num_2 = num[0]*num[1]*num[3]
num_3 = num[0]*num[1]*num[4]
num_4 = num[1]*num[2]*num[3]
num_5 = num[1]*num[2]*num[4]
num_6 = num[2]*num[3]*num[4]
num_7 = num[0]*num[2]*num[3]
num_8 = num[0]*num[2]*num[4]
num_9 = num[0]*num[3]*num[4]
num_10 = num[1]*num[3]*num[4]

answer = num_1 + num_2 + num_3 + num_4 + num_5 + num_6 + num_7 + num_8 + num_9 + num_10

print(answer)

Fixed code:
N = int(input())
num = [0,0,0,0,0]
for i in range(N):
	a = input()
	if a[0]=='M':
		num[0] += 1
	if a[0]=='A':
		num[1] += 1
	if a[0]=='R':
		num[2] += 1
	if a[0]=='C':
		num[3] += 1
	if a[0]=='H':
		num[4] += 1


num_1 = num[0]*num[1]*num[2]
num_2 = num[0]*num[1]*num[3]
num_3 = num[0]*num[1]*num[4]
num_4 = num[1]*num[2]*num[3]
num_5 = num[1]*num[2]*num[4]
num_6 = num[2]*num[3]*num[4]
num_7 = num[0]*num[2]*num[3]
num_8 = num[0]*num[2]*num[4]
num_9 = num[0]*num[3]*num[4]
num_10 = num[1]*num[3]*num[4]

answer = num_1 + num_2 + num_3 + num_4 + num_5 + num_6 + num_7 + num_8 + num_9 + num_10

print(answer)
Buggy code:
import itertools as ite
N=int(input())
C=[0]*N
J="MARCH"
for i in range(N):
    C[J.find(input()[0])]+=1
ans=0
for i,j,k in list(ite.combinations(range(5),3)):
    ans+=C[i]*C[j]*C[k]
print(ans)


Fixed code:
import itertools as ite
N=int(input())
C=[0]*6
J="MARCH"
for i in range(N):
    C[J.find(input()[0])]+=1
ans=0
for i,j,k in list(ite.combinations(range(5),3)):
    ans+=C[i]*C[j]*C[k]
print(ans)
Buggy code:
n = int(input())
l = ['M','A','R','C','H']
m = []
a = []
r = []
c = []
h = []
for i in range(n):
    s = input()
    if not s[0] in l: continue
    if s[0] == 'M':
        m.append(s)
    elif s[0] == 'A':
        a.append(s)
    elif s[0] == 'R':
        r.append(s)
    elif s[0] == 'C':
        c.append(s)
    else:
        h.append(s)

n = sum([len(i) for i in [m,a,r,c,h]])
all = n * (n - 1) * (n - 2) // 6
print(r)
for t in [m,a,r,c,h]:
    i = len(t)
    if i >= 2:
        k = i * (i -1) // 2
        all -= k*(n-2)
    if i >= 3:
        k = i * (i - 1) * (i - 2) // 6
        all -= k
print(all)

Fixed code:
n = int(input())
l = ['M','A','R','C','H']
m = []
a = []
r = []
c = []
h = []
for i in range(n):
    s = input()
    if not s[0] in l: continue
    if s[0] == 'M':
        m.append(s)
    elif s[0] == 'A':
        a.append(s)
    elif s[0] == 'R':
        r.append(s)
    elif s[0] == 'C':
        c.append(s)
    else:
        h.append(s)

n = sum([len(i) for i in [m,a,r,c,h]])
all = n * (n - 1) * (n - 2) // 6
for t in [m,a,r,c,h]:
    i = len(t)
    if i >= 3:
        k = i * (i - 1) * (i - 2) // 6
        all -= k
    if i >= 2:
        k = i * (i - 1) // 2
        all -= k * (n - i)
print(all)
Buggy code:
from collections import Counter
from itertools import combinations

n = int(input())
s = [input()[0] for _ in range(n)]
lc = Counter(s)
print(lc)

con = []
for c in 'MARCH':
    if c in lc:
        con.append(lc[c])

ans = 0
for a, b, c in combinations(con, 3):
    ans += a * b * c

print(ans)


Fixed code:
from collections import Counter
from itertools import combinations

n = int(input())
s = [input()[0] for _ in range(n)]
lc = Counter(s)

con = []
for c in 'MARCH':
    if c in lc:
        con.append(lc[c])

ans = 0
for a, b, c in combinations(con, 3):
    ans += a * b * c

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

l=[]
for i in range(n):
    l+=[input()[0]]

march=[0]*5
for j in range(n):
    if l[j]=='M':
        march[0]+=1
    elif l[j]=='A':
        march[1]+=1
    elif l[j]=='R':
        march[2]+=1
    elif l[j]=='C':
        march[3]+=1
    elif l[j]=='H':
        march[4]+=1
print(march)

from itertools import combinations
ans=0
for x,y,z in combinations(march, 3):
    ans+=x*y*z

print(ans)



Fixed code:
n=int(input())

l=[]
for i in range(n):
    l+=[input()[0]]

march=[0]*5
for j in range(n):
    if l[j]=='M':
        march[0]+=1
    elif l[j]=='A':
        march[1]+=1
    elif l[j]=='R':
        march[2]+=1
    elif l[j]=='C':
        march[3]+=1
    elif l[j]=='H':
        march[4]+=1

from itertools import combinations
ans=0
for x,y,z in combinations(march, 3):
    ans+=x*y*z

print(ans)
Buggy code:
n=int(input())
m=a=r=c=h=0
ls
for i in range(n):
    s=input()
    if s[0]=='M':
        m+=1
    elif a[0]=='A':
        a+=1
    elif a[0]=='R':
        r+=1
    elif a[0]=='C':
        c+=1
    elif a[0]=='H':
        h+=1
print(m*a*r+m*a*c+m*a*h+m*r*c+m*r*h+m*c*h+a*r*c+a*r*h+a*c*h+r*c*h)

Fixed code:
n=int(input())
m=a=r=c=h=0
for i in range(n):
    s=input()
    if s[0]=='M':
        m+=1
    elif s[0]=='A':
        a+=1
    elif s[0]=='R':
        r+=1
    elif s[0]=='C':
        c+=1
    elif s[0]=='H':
        h+=1
print(m*a*r+m*a*c+m*a*h+m*r*c+m*r*h+m*c*h+a*r*c+a*r*h+a*c*h+r*c*h)
Buggy code:
from collections import Counter

n = int(input())
c = Counter()
for i in range(n):
    tmp = input().strip()
    if tmp[0] in ['M', 'A', 'R', 'C', 'H']:
        c[tmp[0]] += 1

result = 0
for v in itertools.permutations(c.values(), 3):
    result += v[0] * v[1] * v[2]

print(result // 6)




Fixed code:
import itertools
from collections import Counter

n = int(input())
c = Counter()
for i in range(n):
    tmp = input().strip()
    if tmp[0] in ['M', 'A', 'R', 'C', 'H']:
        c[tmp[0]] += 1

result = 0
for v in itertools.permutations(c.values(), 3):
    result += v[0] * v[1] * v[2]

print(result // 6)
Buggy code:
from itertools import*;d={};g=d.get
for t in open(0).read().split():d[t]=g(t,0)+1
print(sum(g(p,0)*g(q,0)*g(r,0)for p,q,r in combinations('MARCH',3)))

Fixed code:
from itertools import*;d={};g=d.get
for t in open(0).read().split():d[t[0]]=g(t[0],0)+1
print(sum(g(p,0)*g(q,0)*g(r,0)for p,q,r in combinations('MARCH',3)))
Buggy code:
import numpy as np
from itertools
from functools import reduce
from collections import defaultdict

N = int(input())
d = defaultdict(int)
for i in range(N):
    c = input()
    if c[0] in ('M', 'A', 'R', 'C', 'H'):
        d[c[0]] += 1

l = len(d)
if l < 3:
    print(0)
else:
    ans = 0
    for l in list(itertools.combinations(d.values(), 3)):
        ans += reduce(np.multiply, l)
    print(ans)

Fixed code:
import numpy as np
from itertools import combinations
from functools import reduce
from collections import defaultdict

N = int(input())
d = defaultdict(int)
for i in range(N):
    c = input()
    if c[0] in ('M', 'A', 'R', 'C', 'H'):
        d[c[0]] += 1

l = len(d)
if l < 3:
    print(0)
else:
    ans = 0
    for l in list(combinations(d.values(), 3)):
        ans += reduce(np.multiply, l)
    print(ans)
Buggy code:
n = int(input())
march = {'m': 0, 'a': 0, 'r': 0, 'c': 0, 'h': 0}
for i in range(n):
  s = input()[0]
  try:
    march[s] += 1
  except:
    pass
ans = 0

for key1 in march.keys():
  for key2 in march.keys():
    if key1 != key2:
      for key3 in march.keys():
        if key3 != key1 and key3 != key2:
          ans += key1 * key2 * key3
print(ans)

Fixed code:
n = int(input())
march = {'m': 0, 'a': 0, 'r': 0, 'c': 0, 'h': 0}
for i in range(n):
  s = input()[0].lower()
  try:
    march[s] += 1
  except:
    pass
ans = 0

for key1 in march.keys():
  for key2 in march.keys():
    if key1 != key2:
      for key3 in march.keys():
        if key3 != key1 and key3 != key2:
          ans += march[key1] * march[key2] * march[key3]
print(ans//6)
Buggy code:
N = int(input())
S ="MARCH"
S2 = [0]*len(S)
n=0

for i in range(N):
    s = input()
    for k, j in enumerate(S1):
        if s[0] == j:
            S2[k]+=1
            
for i in range(len(S2)):
    for j in range(i+1,len(S2)):
        for k in range(j+1,len(S2)):
            n +=S2[i]*S2[j]*S2[k]
    
print(n)

Fixed code:
N = int(input())
S ="MARCH"
S2 = [0]*len(S)
n=0

for i in range(N):
    s = input()
    for k, j in enumerate(S):
        if s[0] == j:
            S2[k]+=1
            
for i in range(len(S2)):
    for j in range(i+1,len(S2)):
        for k in range(j+1,len(S2)):
            n +=S2[i]*S2[j]*S2[k]
    
print(n)
Buggy code:
N = int(input())
A = []
for i in range(N):
    A.append(input())
k = 0
c = [ 0,0,0,0,0]
for i in A:
  if i[0] == 'M':
    c[0] += 1
  if i[0] == 'A':
    c[1] += 1
  if i[0] == 'R':
    c[2] += 1
  if i[0] == 'C':
    c[3] += 1
  if i[0] == 'H':
    c[4] += 1

print(c)
if not c.count(0) >= 3:
  k += c[0] * c[1] * c[2] + c[0] * c[1] * c[3] + c[0] * c[1] * c[4] + c[0] * c[2] * c[3] + c[0] * c[2] * c[4] + c[0] * c[3] * c[4] + c[1] * c[2] * c[3] + c[1] * c[2] * c[4] + c[1] * c[3] * c[4] + c[2] * c[3] * c[4] 

print(k)

Fixed code:
N = int(input())
A = []
for i in range(N):
    A.append(input())
k = 0
c = [ 0,0,0,0,0]
for i in A:
  if i[0] == 'M':
    c[0] += 1
  if i[0] == 'A':
    c[1] += 1
  if i[0] == 'R':
    c[2] += 1
  if i[0] == 'C':
    c[3] += 1
  if i[0] == 'H':
    c[4] += 1


if not c.count(0) >= 3:
  k += c[0] * c[1] * c[2] + c[0] * c[1] * c[3] + c[0] * c[1] * c[4] + c[0] * c[2] * c[3] + c[0] * c[2] * c[4] + c[0] * c[3] * c[4] + c[1] * c[2] * c[3] + c[1] * c[2] * c[4] + c[1] * c[3] * c[4] + c[2] * c[3] * c[4] 

print(k)
Buggy code:
n=int(input())
march=[0,0,0,0,0]
for i in range(n):
    l=input()
    if l[0] in 'MARCH':
        index='MARCH'.find(l[0])
        march[index]+=1
result=0
result+=march[0]*march[1]*march[2]
result+=march[0]*march[1]*march[3]       
result+=march[0]*march[1]*march[4]
result+=march[0]*march[2]*march[3]
result+=march[0]*march[2]*march[4]
result+=march[0]*march[3]*march[4]
result+=march[1]*march[2]*march[2]
result+=march[1]*march[2]*march[3]
result+=march[1]*march[3]*march[4]
result+=march[2]*march[3]*march[4]
print(result)

Fixed code:
n=int(input())
march=[0,0,0,0,0]
for i in range(n):
    l=input()
    if l[0] in 'MARCH':
        index='MARCH'.find(l[0])
        march[index]+=1
result=0
result+=march[0]*march[1]*march[2]
result+=march[0]*march[1]*march[3]       
result+=march[0]*march[1]*march[4]
result+=march[0]*march[2]*march[3]
result+=march[0]*march[2]*march[4]
result+=march[0]*march[3]*march[4]
result+=march[1]*march[2]*march[3]
result+=march[1]*march[2]*march[4]
result+=march[1]*march[3]*march[4]
result+=march[2]*march[3]*march[4]
print(result)
Buggy code:
n = int(input())
print(n//10**(len(str(n))-1))
if (n//10**(len(str(n))-1)+1)*10**(len(str(n))-1)-1 > n:
  mx = (n//10**(len(str(n))-1))*10**(len(str(n))-1)-1
else:
  mx = (n//10**(len(str(n))-1)+1)*10**(len(str(n))-1)-1
print(sum(list(map(int,str(mx)))))

Fixed code:
n = int(input())
if (n//10**(len(str(n))-1)+1)*10**(len(str(n))-1)-1 > n:
  mx = (n//10**(len(str(n))-1))*10**(len(str(n))-1)-1
else:
  mx = (n//10**(len(str(n))-1)+1)*10**(len(str(n))-1)-1
print(sum(list(map(int,str(mx)))))