Harryxun/GPT-100-sft-dataset huggingface dataset:
Problem p03088 (python)

Fixed submission:
from copy import deepcopy

def getval():
    n = int(input())
    return n

def main(n):
    mod = 10**9 + 7
    #A:0 C:1 G:2 T:3
    dp = [[[1 for i in range(4)] for i in range(4)] for i in range(4)]
    dp[0][2][1] = 0
    dp[0][1][2] = 0
    dp[2][0][1] = 0

    def pow4(arr):
        ans = 0
        for i in range(4):
            ans += arr[i]*(4**(3-i))
        return ans 

    p = []
    for i in range(4):
        p.append(pow4([0,2,1,i]))
        p.append(pow4([0,1,2,i]))
        p.append(pow4([2,0,1,i]))
        p.append(pow4([i,0,2,1]))
        p.append(pow4([i,0,1,2]))
        p.append(pow4([i,2,0,1]))
        p.append(pow4([0,i,2,1]))
        p.append(pow4([0,2,i,1]))

    it1 = iter(p)
    it2 = iter(p)
    co = 0
    di = dict(zip(it1,it2))
    for i in range(n-3):
        temp = [[[0 for i in range(4)] for i in range(4)] for i in range(4)]
        for a in range(4):
            for b in range(4):
                for c in range(4):
                    for d in range(4):
                        if pow4([a,b,c,d]) in di:
                            temp[b][c][d] += 0
                        else:
                            temp[b][c][d] += dp[a][b][c]
                            temp[b][c][d] %= mod
        dp = temp

    ans = 0
    if n>=4:
        for i in range(4):
            for j in range(4):
                for k in range(4):
                    ans += temp[i][j][k]
    elif n==3:
        ans = 61
    ans %= mod
    print(ans)

if __name__=="__main__":
    n = getval()
    main(n)

Buggy submission (verdict: Runtime Error):
from copy import deepcopy

def getval():
    n = int(input())
    return n

def main(n):
    mod = 10**9 + 7
    #A:0 C:1 G:2 T:3
    dp = [[[1 for i in range(4)] for i in range(4)] for i in range(4)]
    dp[0][2][1] = 0
    dp[0][1][2] = 0
    dp[2][0][1] = 0

    def pow4(arr):
        ans = 0
        for i in range(4):
            ans += arr[i]*(4**(3-i))
        return ans 

    p = []
    for i in range(4):
        p.append(pow4([0,2,1,i]))
        p.append(pow4([0,1,2,i]))
        p.append(pow4([2,0,1,i]))
        p.append(pow4([i,0,2,1]))
        p.append(pow4([i,0,1,2]))
        p.append(pow4([i,2,0,1]))
        p.append(pow4([0,i,2,1]))
        p.append(pow4([0,2,i,1]))

    it1 = iter(p)
    it2 = iter(p)
    co = 0
    di = dict(zip(it1,it2))
    for i in range(n-3):
        temp = [[[0 for i in range(4)] for i in range(4)] for i in range(4)]
        for a in range(4):
            for b in range(4):
                for c in range(4):
                    for d in range(4):
                        if pow4([a,b,c,d]) in di:
                            temp[b][c][d] += 0
                        else:
                            temp[b][c][d] += dp[a][b][c]
                            temp[b][c][d] %= mod
        dp = temp

    ans = 0
    for i in range(4):
        for j in range(4):
            for k in range(4):
                ans += temp[i][j][k]
    ans %= mod
    print(ans)

if __name__=="__main__":
    n = getval()
    main(n)
Problem p03280 (python)

Fixed submission:
a,b = map(int,input().split())
print(str(a*b-a-b+1))

Buggy submission (verdict: Runtime Error):
a,b = map(int,input())
print(str(a*b-a-b+1))
Problem p03280 (python)

Fixed submission:
s = list(map(int,input().split()))
print(s[0]*s[1] -(s[0]+s[1]-1))

Buggy submission (verdict: Runtime Error):
a = int(input())
b = int(input())
print(a*b -(a+b-1))
Problem p03635 (python)

Fixed submission:
n, m = map(int, input().split())
print((n - 1) * (m - 1))

Buggy submission (verdict: Runtime Error):
n, m = map(int, input.split())
print((n - 1) * (m - 1))
Problem p03759 (python)

Fixed submission:
a = list(map(int, input().split()))
print("YES" if a[1] - a[0] == a[2] - a[1] else "NO")

Buggy submission (verdict: Runtime Error):
a = list(map(int, input().split()))
print("YES" if b - a == c - b else "NO")
Problem p02639 (python)

Fixed submission:
a = [int(i) for i in input().split()]
for i in range(0,len(a)):
  if a[i]==0:
    print(i+1)

Buggy submission (verdict: Runtime Error):
a = [int(i) for i in input().split()]
for i in range(0,a.len()):
  if a[i]==0:
    print(i+1)
Problem p02658 (python)

Fixed submission:
n=input()
x=[int(i) for i in input().split()]
x.sort()
prod=1
for i in x:
  prod=prod*i
  if prod>1000000000000000000:
    break
if prod>1000000000000000000:
  print(-1)
else:
  print(prod)

Buggy submission (verdict: Runtime Error):
n=input()
x=input.split()
prod=1
for i in x:
  prod=prod*i
  if prod>1000000000000000000:
    break
if prod>1000000000000000000:
  print(-1)
else:
  print(prod)
Problem p02678 (python)

Fixed submission:
from collections import deque
inf = 10 ** 7
N, M = map(int, input().split())
P = [list(map(int,input().split())) for i in range(M)]
a = [[] for i in range(N)]
for i in P:
    a[i[0]-1].append(i[1]-1)
    a[i[1]-1].append(i[0]-1)
path = [-1] * N
path[0] = 0
checked = [False] * N
stack = deque([(0,0)])
while (len(stack) != 0):
    kk = stack.popleft()
    now = kk[0]
    pre = kk[1]
    if  not checked[now]:    
        nextP = a[now]
        checked[now] = True
        path[now] = pre
        for i in nextP:
            stack.append((i,now))
if False in checked:
    print("No")
else:
    print("Yes")
    for i in path[1:]:
        print(i + 1)

Buggy submission (verdict: Runtime Error):
from collections import deque
inf = 10 ** 7
N, M = map(int, input().split())
P = [list(map(int,input().split())) for i in range(M)]
a = [[] for i in range(N)]
for i in P:
    a[i[0]-1].append(i[1]-1)
    a[i[1]-1].append(i[0]-1)
path = [-1] * N
path[0] = 0
checked = [False] * N
stack = deque([(0,0)])
while (len(stack) != 0):
    kk = stack.pop(0)
    now = kk[0]
    pre = kk[1]
    if  not checked[now]:    
        nextP = a[now]
        checked[now] = True
        path[now] = pre
        for i in nextP:
            stack.append((i,now))
if False in checked:
    print("No")
else:
    print("Yes")
    for i in path[1:]:
        print(i + 1)
Problem p02684 (python)

Fixed submission:
N, M = map(int, input().split())
P = [i -1 for i in map(int,input().split())]
ss = set([])
point = 0
for i in range(N):
    if point in ss:
        break
    ss.add(point)
    point = P[point]
S = [0]
points = 0
for i in range(len(ss)-1):
    points = P[points]
    S.append(points)
loop = S[S.index(point):]
ll = len(S)
l = len(loop)
if ll > M:
    print(S[M]+1)
elif ll == M:
    print(point+1)
else:
    print(loop[(M-ll)%l]+1)

Buggy submission (verdict: Runtime Error):
N, M = map(int, input().split())
P = [i -1 for i in map(int,input().split())]
ss = set([])
point = 0
for i in range(N):
    if point in ss:
        break
    ss.add(point)
    point = P[point]
S = [0]
points = 0
for i in range(len(ss)-1):
    points = P[points]
    S.append(points)
loop = S[S.index(points):]
ll = len(S)
l = len(loop)
if ll >= M:
    print(S[M]+1)
else:
    print(loop[(M-ll)%l]+1)

Buggy submission (verdict: Runtime Error):
N, M = map(int, input().split())
P = [i -1 for i in map(int,input().split())]
ss = set([])
point = 0
for i in range(N):
    if point in ss:
        break
    ss.add(point)
    point = P[point]
S = [0]
points = 0
for i in range(len(ss)-1):
    points = P[points]
    S.append(points)
loop = S[S.index(point):]
ll = len(S)
l = len(loop)
if ll >= M:
    print(S[M]+1)
else:
    print(loop[(M-ll)%l]+1)
Problem p02801 (python)

Fixed submission:
a = input()

print(chr(ord(a)+1))

Buggy submission (verdict: Runtime Error):
N, K, M = map(int, input().split())
List = [int(i) for i in input().split()]

Goal = N * M

sub = Goal - sum(List)
if sub > K:
    print(-1)
else:
    print(sub)
Problem p02936 (python)

Fixed submission:
import sys
sys.setrecursionlimit(10**7) 

N,Q = map(int,input().split())
path = [[] for i in range(N)]
ans = [0] * N
def dfs(v,p=-1):
    for to in path[v]:
        if to == p :
            continue
        ans[to] += ans[v]
        dfs(to,v)

for i in range(N-1):
    a,b = map(int,input().split())
    a -= 1
    b -= 1
    path[a].append(b)
    path[b].append(a)
for i in range(Q):
    P,X = map(int,input().split())
    ans[P-1] += X
dfs(0)
print(*ans)

Buggy submission (verdict: Runtime Error):
N,Q = map(int,input().split())
path = [[] for i in range(N)]
ans = [0] * N
def dfs(v,p=-1):
    for to in path[v]:
        if to == p :
            continue
        ans[to] += ans[v]
        dfs(to,v)

for i in range(N-1):
    a,b = map(int,input().split())
    a -= 1
    b -= 1
    path[a].append(b)
    path[b].append(a)
for i in range(Q):
    P,X = map(int,input().split())
    ans[P-1] += X
dfs(0)
print(*ans)

Buggy submission (verdict: Runtime Error):
N,Q = map(int,input().split())
path = [[] for i in range(N)]
ans = [0] * N
def dfs(v,p=-1):
    for to in path[v]:
        if to == p :
            continue
        ans[to] += ans[v]
        dfs(to,v)

for i in range(N-1):
    a,b = map(int,input().split())
    a -= 1
    b -= 1
    path[a].append(b)
    path[b].append(a)
for i in range(Q):
    P,X = map(int,input().split())
    ans[P-1] += X
dfs(0)
print(*ans)
Problem p02957 (python)

Fixed submission:
a,b=map(int, input().split())
ans = a + b
if ans % 2 == 0:
  print(ans //2)
else:
  print("IMPOSSIBLE")

Buggy submission (verdict: Runtime Error):
A, B = map(int,input().split)
ans = A + B
if ans % 2 == 0:
  print(ans //2)
else:
  print("IMPOSSIBLE")

Buggy submission (verdict: Runtime Error):
N = int(input())
p = list(map(int,input().split()))
count = 0
for i in range(N-1):
  if  p[i + 1] - p[i] != 1:
    count += 1
if count == 2 or count == 0:
  print("YES")
else:
  print("NO")
Problem p02958 (python)

Fixed submission:
N = int(input())
p = list(map(int,input().split()))
s = list(range(1,N+ 1))
count = 0
for i in range(N):
  if s[i] != p[i]:
    count += 1
if count == 0 or count ==2:
  print("YES")
else:
  print("NO")

Buggy submission (verdict: Runtime Error):
N = int(input())
p = list(map(int,input().split()))
count = 0
for i in range(N-1):
	if  p[i + 1] - p[i] != 1:
      count += 1
if count <= 2:
  print("YES")
else:
  print("NO")
Problem p03160 (python)

Fixed submission:
N = int(input())
A = list(map(int,input().split()))
dp = [0] * (N+10)
dp[2] = abs(A[1] - A[0])
for i in range(2,N):
    Ai = abs(A[i] - A[i-1])
    Ai2 = abs(A[i] - A[i-2])
    dp[i+1] = min(dp[i]+Ai,dp[i-1]+Ai2)

print(dp[N])

Buggy submission (verdict: Runtime Error):
N,K = map(int,input().split())
h = list(map(int,input().split()))
dp = [0] * N
dp[0] = 0
for i in range(1,N):
    dp[i] = min([dp[i-j-1] + abs(h[i]-h[i-j-1]) for j in range(min(i,K))])

print(dp[-1])

Buggy submission (verdict: Runtime Error):
N = int(input())
A = list(map(int,input().split()))
dp = [0] * (N+10)
dp[2] = abs(A[1] - A[0])
for i in range(2,N):
    Ai2 = abs(A[i] - A[i-2])
    dp[i+1] = min(dp[i]+,dp[i-1]+Ai2)

print(dp[N])
Problem p03161 (python)

Fixed submission:
def main():
    N,K = map(int,input().split())
    A = list(map(int,input().split()))
    dp = [0] * (N+10)
    dp[2] = abs(A[1] - A[0])
    for i in range(2,N):
        res = []
        if K > i:
            kk = i+1
        else:
            kk = K + 1
        for j in range(1,kk):
            res.append(abs(A[i] - A[i-j])+dp[i-j+1])
        dp[i+1] = min(res)
    
    print(dp[N])
if __name__ == "__main__":
    main()

Buggy submission (verdict: Runtime Error):
def main()
    N,K = map(int,input().split())
    A = list(map(int,input().split()))
    dp = [0] * (N+10)
    dp[2] = abs(A[1] - A[0])
    for i in range(2,N):
        res = []
        if K > i:
            kk = i+1
        else:
            kk = K + 1
        for j in range(1,kk):
            res.append(abs(A[i] - A[i-j])+dp[i-j+1])
        dp[i+1] = min(res)
    
    print(dp[N])
if __name__ == "__main__":
    main()

Buggy submission (verdict: Runtime Error):
N,K = map(int,input().split())
A = list(map(int,input().split()))
dp = [0] * (N+10)
dp[2] = abs(A[1] - A[0])
for i in range(2,N):
    res = []
    if K+1 > i:
        K = i + 1
    for j in range(1,K):
        res.append(abs(A[i] - A[i-j])+dp[i-j+1])
    dp[i+1] = min(res)
 
print(dp[N])

Buggy submission (verdict: Runtime Error):
N,K = map(int,input().split())
A = list(map(int,input().split()))
dp = [0] * (N+10)
dp[2] = A[1] - A[0] 
for i in range(2,N):
    res = []
    if K+1 > i:
        K = i + 1
    for j in range(1,K):
        res.append(abs(A[i] - A[i-j])+dp[i-j+1])
    dp[i+1] = min(res)

print(dp[N])
Problem p02888 (python)

Fixed submission:
import numpy as np
n = int(input())

l = np.array(list(map(int,input().split())))

l.sort()
l = l[::-1]
ans = 0
for i in range(n-2):
    j = i+1
    k = n-1
    while j < k:
        if l[i] < l[j] + l[k]:
            ans += k - j
            j += 1
        else:
            k -= 1
print(ans)

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

n = int(input())

l = np.array(list(map(int,input().split())))

# n = 200
# l = np.array([i+1 for i in range(n)])

l.sort()
# def num(first,second,third):
#     if l[first] < l[second] + l[third]:
#         dp[first] += 1
#         if third > 0:
#             num(first,second,third-1)
#         else:
#             # print(first,second,third)
#             return 
#     else:
#         # print(first,second,third)
#         return second, third





dp = np.array([0]*n)

for i in range(n-1,1,-1):
    for j in range(i-1,0,-1):
        # print(i,j)
        # num(i,j,j-1)
        for k in range(j-1,-1,-1):
            if l[i] < l[j] + l[k]:
                dp[i] += 1
            else:
                second = j
                third = k
                break
        if second == third + 1:
            break
    # print(i)
print(np.sum(dp))

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

n = int(input())

l = np.array(list(map(int,input().split())))
l.sort()
def num(first,second,third):
    if l[first] < l[second] + l[third]:
        dp[first] += 1
        if third > 0:
            num(first,second,third-1)
        elif second > 1:
            num(first,second-1,second-2)
        else:
            return
    else:
        if second == third + 1:
            return
        else:
            if second > 1:
                num(first,second-1,second-2)


            


dp = np.array([0]*n)

for i in range(n-1,1,-1):
    num(i,i-1,i-2)
print(np.sum(dp))

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

n = int(input())

l = np.array(list(map(int,input().split())))
l.sort()
def num(first,second,third):
    if l[first] < l[second] + l[third]:
        dp[first] += 1
        if third > 0:
            num(first,second,third-1)
        elif second > 1:
            num(first,second-1,second-2)
        else:
            return
    else:
        if second == third + 1:
            return
        else:
            num(first,second-1,second-2)


            


dp = np.array([0]*n)

for i in range(n-1,1,-1):
    num(i,i-1,i-2)
print(np.sum(dp))
Problem p02993 (python)

Fixed submission:
s=input()

for i in range(3):
    if s[i] in s[i+1]:
        print('Bad')
        break
else:
    print("Good")

Buggy submission (verdict: Runtime Error):
import fractions as frac
a,b,c,d = map(int,input().split())


lcm = (c * d) // frac.gcd(c,d)
if a % lcm != 0:
    s = lcm - a % lcm
else:
    s = 0
e = b % lcm
m = ((b - e) - (a + s)) // lcm
modgcd = (b - a + 1) - (s + (lcm - 1) * m + e)

if a % c != 0:
    s = c - a % c
else:
    s = 0
e = b % c
m = ((b - e) - (a + s)) // c
modc = (b - a + 1)- (s + (c - 1) * m + e)

if a % d != 0:
    s = d - a % d
else:
    s = 0
e = b % d
m = ((b - e) - (a + s)) // d
modd = (b - a + 1) - (s + (d - 1) * m + e)

print((b - a + 1)-(modc + modd - modgcd))
Problem p03061 (python)

Fixed submission:
from fractions import gcd
n=int(input())
a=list(map(int,input().split()))

s1=a[0]
s2=a[-1]
su=[s1]
sd=[s2]
for i in range(1,n-1):
    s1=gcd(s1,a[i])
    s2=gcd(s2,a[(i+1)*(-1)])
    su+=[s1]
    sd+=[s2]
sd.reverse()

ans=[su[-1],sd[0]]
for i in range(n-2):
    ans+=[gcd(su[i],sd[i+1])]
print(max(ans))

Buggy submission (verdict: Runtime Error):
from math import gcd
n=int(input())
a=list(map(int,input().split()))

if n==2:
    b=max(a)
else:
    s1=gcd(a[0],a[1])
    s2=gcd(a[0],a[2])
    s3=gcd(a[2],a[1])
    c=gcd(s1,s2)
    b=max(s1,s2,s3)
    if b==s1:
        t=a[2]
    elif b==s2:
        t=a[1]
    else:
        t=a[0]
    if len(a)>=4:
        for i in a[3:]:
            d=gcd(b,i)
            if d>c:
                b=d
                c=gcd(c,i)
            else:
                t=i
                b=c
                c=d
print(b)

Buggy submission (verdict: Runtime Error):
import math

N=int(input())
A=list(map(int,input().split()))
a1=[]
a2=[]
for i in range(N-1):
    a1+=[math.gcd(A[N-1], A[i])]
    a2+=[math.gcd(A[0], A[i+1])]
a1.sort()
a2.sort()

if N>2:
    print(max(a1[1],a2[1]))
elif N==2:
    print(max(A))
Problem p03087 (python)

Fixed submission:
n,q=map(int,input().split())
s=input()
index1=[0]*(n+2)

num=0
for i in range(len(s)):
    if s[i:i+2]=='AC':
        num+=1
    index1[i+1]=num


ans=[]

for i in range(q):
    l,r=map(int,input().split())
    if index1[l-1]==index1[l] and index1[r-1]==index1[r]:
        ans+=[index1[r]-index1[l]]
    elif index1[l-1]!=index1[l] and index1[r-1]==index1[r]:
        ans+=[index1[r]-index1[l]+1]
    elif index1[l-1]==index1[l] and index1[r-1]!=index1[r]:
        ans+=[index1[r]-index1[l]-1]
    elif index1[l-1]!=index1[l] and index1[r-1]!=index1[r]:
        ans+=[index1[r]-index1[l]]
for i in ans:
    print(i)

Buggy submission (verdict: Runtime Error):
n,q=map(int,input().split())
s=input()
index=[]
num=0
for i in range(len(s)-1):
    if s[i:i+2]=='AC':
        index+=[[i+1,num+1]]
        num+=1
ans=[]
for i in range(q):
    l,r=map(int,input().split())
    j=0
    k=1
    while index[j][0]<l or index[k*(-1)][0]+1>r:
        if index[j][0]<l:
            j+=1
        if index[k*(-1)][0]+1>r:
            k+=1
    ans+=[index[k*(-1)][1]-index[j][1]+1]

for i in ans:
    print(i)
Problem p03102 (python)

Fixed submission:
N,M,C=map(int,input().split())
B=[i for i in map(int,input().split())]
A=[]
for i in range(N):
    A1=[i for i in map(int,input().split())]
    A+=[A1]


count=0
for i in range(N):
    dot=0
    for j in range(M):
        dot+=B[j]*A[i][j]
    dot+=C
    if dot>0:
        count+=1
print(count)

Buggy submission (verdict: Runtime Error):
import numpy as np
N,M,C=map(int,input().split())
B=[i for i in map(int,input().split())]
A=[]
for i in range(N):
    A1=[i for i in map(int,input().split())]
    A+=[A1]

B=np.array(B)
A=np.array(A)
count=0
for i in range(N):
    if B@A[i].T+C>0:
        count+=1
print(count)
Problem p03739 (python)

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

ans=[0, 0]
if a[0]!=0:
    sm=a[0]
    for i in range(n-1):
        sm1=sm+a[i+1]
        if sm*sm1>=0:
            ans[0]+=abs(sm1)+1
            if sm>0:
                sm=-1
            else:
                sm=1
        else:
            sm=sm1

    if a[0]>0:
        sm=-1
    else:
        sm=1
    ans[1]+=abs(a[0])+1
    for i in range(n-1):
        sm1=sm+a[i+1]
        if sm*sm1>=0:
            ans[1]+=abs(sm1)+1
            if sm>0:
                sm=-1
            else:
                sm=1
        else:
            sm=sm1
if a[0]==0:
    sm=1
    ans[0]+=1
    for i in range(n-1):
        sm1=sm+a[i+1]
        if sm*sm1>=0:
            ans[0]+=abs(sm1)+1
            if sm>0:
                sm=-1
            else:
                sm=1
        else:
            sm=sm1

    sm=-1
    ans[1]+=1
    for i in range(n-1):
        sm1=sm+a[i+1]
        if sm*sm1>=0:
            ans[1]+=abs(sm1)+1
            if sm>0:
                sm=-1
            else:
                sm=1
        else:
            sm=sm1
print(min(ans))

Buggy submission (verdict: Runtime Error):
n=int(input())
a=list(map(int,input().split()))

sm=a[0]
ans=[0, 0]
for i in range(n-1):
    sm1=sm+a[i+1]
    if sm*sm1>=0:
        ans[0]+=abs(sm1)+1
        sm//=abs(sm)*(-1)
    else:
        sm=sm1


sm=-1
ans[1]+=abs(a[0])+1
for i in range(n-1):
    sm1=sm+a[i+1]
    if sm*sm1>=0:
        ans[1]+=abs(sm1)+1
        sm//=abs(sm)*(-1)
    else:
        sm=sm1
print(min(ans))

Buggy submission (verdict: Runtime Error):
n=int(input())

a=list(map(int,input().split()))

sm=a[0]

ans=0
for i in range(n-1):
    sm1=sm+a[i+1]
    if sm*sm1>=0:
        ans+=abs(sm1)+1
        sm//=abs(sm)*(-1)
    else:
        sm=sm1
print(ans)
Problem p03761 (python)

Fixed submission:
n=int(input())
s=[]
for i in range(n):
    s+=[input()]

a=[]
if len(s)==1:
    for i in s[0]:
        a+=[i]
    a.sort()
    a=''.join(a)
    print(a)

else:
    s1=s[0]
    s=s[1:]
    for i in s1:
        for j in range(len(s)):
            c1=0
            for k in range(len(s[j])):
                if i==s[j][k]:
                    s[j]=s[j][:k]+s[j][k+1:]
                    c1+=1
                    break
            if c1==0:
                break
        if c1==1:
            a+=[i]
    a.sort()
    a=''.join(a)
    print(a)

Buggy submission (verdict: Runtime Error):
n=int(input())
s=[]
for i in range(n):
    s+=[input()]
s1=s[0]
s=s[1:]
a=[]
for i in s1:
    for j in range(len(s)):
        c1=0
        for k in range(len(s[j])):
            if i==s[j][k]:
                s[j]=s[j][:k]+s[j][k+1:]
                c1+=1
                break
        if c1==0:
            break
    if c1==1:
        a+=[i]
a.sort()
a=''.join(a)
print(a)

Buggy submission (verdict: Runtime Error):
n=int(input())
s=[]
for i in range(n):
    s+=[input()]
s1=s[0]
s=s[1:]
a=[]
for i in s1:
    for j in range(len(s)):
        c1=0
        for k in range(len(s[j])):
            if i==s[j][k]:
                s[j]=s[j][:k]+s[j][k+1:]
                c1+=1
                break
        if c1==0:
            break
    if c1==1:
        a+=[i]
a.sort()
a=''.join(a)
print(a)
Problem p02778 (python)

Fixed submission:
s = input()

for i in range(len(s)):
    print("x", end="")

Buggy submission (verdict: Runtime Error):
s = input()

for i in range(len(s)):
    print("x", end=""aa)
Problem p02630 (python)

Fixed submission:
def main():
    n = int(input())
    A = list(map(int, input().split()))

    sum_a = sum(A)

    d = dict()

    for a in A:
        d[a] = d.get(a, 0) + 1

    for _ in range(int(input())):
        b, c = map(int, input().split())
        if d.get(b, 0) != 0:

            temp = d[b]         
            d[b] -= temp
            d[c] = d.get(c, 0) + temp

            sum_a += (c - b) * temp
        print(sum_a)
        
main()

Buggy submission (verdict: Runtime Error):
def main():
    n = int(input())
    d = dict()
    for a in list(map(int, input().split())):
        d[a] = d.get(a, 0) + 1

    for _ in range(int(input())):
        b, c = map(int, input().split())
        temp = d.get(b, 0)
        d[b] -= temp
        d[c] = d.get(c, 0) + temp

        print(sum(k*v for k, v in d.items()))

main()