Harryxun/testdata huggingface dataset:
Buggy python submission (verdict: Runtime Error):
N,M = map(int,input().split())
XYZ = [[int(x) for x in input().split()] for _ in range(M)]

par = [i for i in range(N)]
rank = [0]*N


def root(x):
    tmp = x
    while par[tmp]!=tmp:
        tmp = par[tmp]
    return tmp

def urite(x,y):
    rx = root(x)
    ry = root(y)
    if rx==ry:
        return
    if rank[rx] < rank[ry]:
        rx,ry = ry,rx
    if rank[rx] == rank[ry]:
        rank[rx] += 1
    par[ry] = rx

for xyz in XYZ:
    urite(x,y)

ans = 0
for i in N:
    if par[i] == i:
        ans += 1
print(ans)


Fixed submission:
N,M = map(int,input().split())
XYZ = [[int(x) for x in input().split()] for _ in range(M)]

par = [i for i in range(N)]
rank = [0]*N


def root(x):
    tmp = x
    while par[tmp]!=tmp:
        tmp = par[tmp]
    return tmp

def unite(x,y):
    rx = root(x)
    ry = root(y)
    if rx==ry:
        return
    if rank[rx] < rank[ry]:
        rx,ry = ry,rx
    if rank[rx] == rank[ry]:
        rank[rx] += 1
    par[ry] = rx

for x,y,z in XYZ:
    unite(x-1,y-1)

ans = 0
for i in range(N):
    if par[i] == i:
        ans += 1
print(ans)

Buggy python submission (verdict: Runtime Error):
N,M = map(int,input().split())
XYZ = [[int(x) for x in input().split()] for _ in range(M)]

par = [i for i in range(N)]
rank = [0]*N


def root(x):
    tmp = x
    while par[tmp]!=tmp:
        tmp = par[tmp]
    return tmp

def urite(x,y):
    rx = root(x)
    ry = root(y)
    if rx==ry:
        return
    if rank[rx] < rank[ry]:
        rx,ry = ry,rx
    if rank[rx] == rank[ry]:
        rank[rx] += 1
    par[ry] = rx

for xyz in XYZ:
    urite(x,y)

ans = 0
for i in N:
    if par[i] == i:
        ans += 1
print(ans)


Fixed submission:
N,M = map(int,input().split())
XYZ = [[int(x) for x in input().split()] for _ in range(M)]

par = [i for i in range(N)]
rank = [0]*N


def root(x):
    tmp = x
    while par[tmp]!=tmp:
        tmp = par[tmp]
    return tmp

def unite(x,y):
    rx = root(x)
    ry = root(y)
    if rx==ry:
        return
    if rank[rx] < rank[ry]:
        rx,ry = ry,rx
    if rank[rx] == rank[ry]:
        rank[rx] += 1
    par[ry] = rx

for x,y,z in XYZ:
    unite(x-1,y-1)

ans = 0
for i in range(N):
    if par[i] == i:
        ans += 1
print(ans)
Buggy python submission (verdict: Runtime Error):
import sys

N = int(input())
A = [int(a) for a in input().split()]

C_sum = [0]
s = {0}

for a in A:
    C_sum.append(C_sum[-1]^a)
    s.add(C_sum[-1])

if C_sum[-1] != 0:
    print(1)
else:
    dic_state = {}
    dic = {}
    for x in s:
        dic_state[x] = 0
        dic[x] = [0]
    for c in C_sum:
        if c==0:
            for d in dic:
                if dic_state[d] == 0:
                    dic[d][-1] += 1
                else:
                    dic[d].append(1)
                    dic_state[d] = 0
        else:
            if dic_state[c] == c:
                dic[c][-1] += 1
            else:
                dic[c].append(1)
                dic_state[c] = c

    ans = pow(2,dic[0][0]-2,10**9+7)

    for d in dic:
        tmp_0 = 1
        tmp_x = 0

        for i in range(1,len(dic[d])):
            if i%2==1:
                tmp_x += tmp_0 * dic[d][i]
                tmp_x %= 10**9+7
            else:
                tmp_0 += tmp_x * dic[d][i]
                tmp_0 %= 10**9+7

        ans += tmp_x
        ans %= 10**9+7

    print(ans)


Fixed submission:
N,K = map(int,input().split())
print(N+1-K)
Buggy python submission (verdict: Runtime Error):
T = [int(input()) for _ in range(5)]

ans = 643

for i0 in range(5):
  tmp = i0
  tmp += (10-tmp)//10
  l = range(5)
  l.remove(i0)
  for i1 in l:
    tmp += i1
    tmp += (10-tmp)//10
    l.remove(i1)
    for i2 in l:
      tmp += i2
      tmp += (10-tmp)//10
      l.remove(i2)
      for i3 in l:
        tmp += i3
        tmp += (10-tmp)//10
        l.remove(i3)
        for i4 in l:
          tmp += i4
          ans = min(ans,tmp)
print(ans)

Fixed submission:
T = [int(input()) for _ in range(5)]

ans = 1000
for i in range(5):
    tmp = 0
    for j in range(5):
        if i==j:
            tmp += T[j]
        else:
            tmp += T[j] + (-T[j])%10
    ans = min(tmp,ans)
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
N,Q = map(int,input().split())
S = "_"+ input() +"_"

dic = {}
for i in range(N+2):
    dic[S[i]] = dic.get(S[i],[]) + [i] 
    
table = [0] + [1]*N + [0]
for _ in range(Q):
    t,d = input().split()
    if t not in dic:
        continue
    if d == "L":                
        for i in dic[t]:
            table[i-1] += table[i] 
            table[i] = 0
    else:   
        for i in dic[t]:
            table[i+1] += table[i]
            table[i] = 0
print(sum(table[1:N+1]))


Fixed submission:
N,Q = map(int,input().split())
S = "_"+ input() +"_"
td = [input().split() for _ in range(Q)]

l = 0
r = N+1
for i in range(Q-1,-1,-1): 
    t,d = td[i]
    if t == S[l] and d == "R":
        l -= 1
    elif t == S[l+1] and d == "L":
        l += 1
    if t == S[r] and d == "L":
        r += 1
    elif t == S[r-1] and d == "R":
        r -= 1
print(max(0,r-l-1))
Buggy python submission (verdict: Runtime Error):
N = int(input())
ans = []
for i in range(1,N):   
    for j in range(i+1,N+1):
        if i+j != (N//2)*2 + 1
            ans.append([i,j])
            
print(len(ans))
for a,b in ans:
    print(a,b)


Fixed submission:
N = int(input())
 
erace1 = 1
erace2 = (N//2)*2
ans = []
for i in range(1,N):   
    for j in range(i+1,N+1):
        if i!=erace1 or j!=erace2: 
            ans.append([i,j])
        else:
            erace1 += 1
            erace2 -= 1
            
print(len(ans))
for a,b in ans:
    print(a,b)
Buggy python submission (verdict: Time Limit Exceeded):
N,M = map(int,input().split())
Bridge = [[int(x)-1 for x in input().split()] for _ in range(M)] 

Igr = [{i} for i in range(N)]
Inconv = [N*(N-1)//2] * (M+1)

for i in range(M):  
    A = Bridge[M-1-i][0] 
    B = Bridge[M-1-i][1]
    if B in Igr[A]:     
        Inconv[M-1-i] = Inconv[M-i]  
    else:
        Inconv[M-1-i] = Inconv[M-i]-(len(Igr[A])*len(Igr[B]))
        Ngr = Igr[A] | Igr[B]   
        for x in list(Ngr):   
            Igr[x] = Ngr
        
for i in range(1,M+1):
    print(Inconv[i])


Fixed submission:
N,M = map(int,input().split())
Bridge = [[int(x)-1 for x in input().split()] for _ in range(M)]

Parent = [-1] * N
Size = [1] * N

def Pr(x):
    if Parent[x] == -1:
        return x
    else:
        return Pr(Parent[x])

Igr = [{i} for i in range(N)]
Inconv = [N*(N-1)//2] * (M+1)

for i in range(M):
    A = Bridge[M-1-i][0]
    B = Bridge[M-1-i][1]
    if Pr(A) == Pr(B):
        Inconv[M-1-i] = Inconv[M-i]
    else:
        Inconv[M-1-i] = Inconv[M-i]-(Size[Pr(A)]*Size[Pr(B)])
        if Size[Pr(A)]<Size[Pr(B)]:
            P = B
            C = A
        else:
            P = A
            C = B
        Size[Pr(P)] = Size[Pr(P)] + Size[Pr(C)]
        Parent[Pr(C)] = Pr(P)

for i in range(1,M+1):
    print(Inconv[i])
Buggy python submission (verdict: Time Limit Exceeded):
A,B,Q = map(int,input().split())
S = [int(input()) for _ in range(A)]
T = [int(input()) for _ in range(B)]
X = [int(input()) for _ in range(Q)]

StoT_W = [10000000010]*A
t = 0
for i in range(A):
    if S[i]<T[0]:
        continue
    while(((t+1)<B)and(T[t+1] < S[i])):
        t += 1
    StoT_W[i] = S[i] - T[t]

StoT_E = [10000000010]*A
t = B-1
for i in range(A-1,-1,-1):
    if T[B-1]<S[i]:
        continue
    while((-1<(t-1))and(S[i] < T[t-1])):
        t-=1
    StoT_E[i] = T[t] - S[i]

StoT = [10000000010]*A
for i in range(A):
    StoT[i] = min(StoT_W[i],StoT_E[i])

TtoS_W = [10000000010]*B
s = 0
for i in range(B):
    if T[i]<S[0]:
        continue
    while(((s+1)<A)and(S[s+1] < T[i])):
        s += 1
    TtoS_W[i] = T[i] - S[s]
    
TtoS_E = [10000000010]*B
s = 0
for i in range(B):
    while(S[s]<T[i]):
        s+=1
        if s==A:
            break
    else:
        TtoS_E[i] = S[s] - T[i]
        continue
    break

TtoS = [10000000010]*B
for i in range(B):
    TtoS[i] = min(TtoS_W[i],TtoS_E[i])

for x in X:
    ans = 30000000000
    for i in range(A):
        ans = min(ans,abs(S[i]-x)+StoT[i])
    for i in range(B):
        ans = min(ans,abs(T[i]-x)+TtoS[i])
    print(ans)


Fixed submission:
from bisect import bisect_left
I = lambda x: [-1<<50] + [int(input()) for i in range(x)] + [1<<50]

A,B,Q = map(int,input().split())
S,T = I(A),I(B)

for _ in range(Q):
    x = int(input())
    LS_ = bisect_left(S,x)
    LT_ = bisect_left(T,x)



    LS = S[LS_-1]
    RS = S[LS_]
    LT = T[LT_-1]
    RT = T[LT_]

    print(min(
        x-min(LS,LT),
        max(RS,RT)-x,
        (x-LS)*2+(RT-x),
        (x-LT)*2+(RS-x),
        (RT-x)*2+(x-LS),
        (RS-x)*2+(x-LT)
        ))
Buggy python submission (verdict: Runtime Error):
N,M = map(int,input().split())
Likes = [N for _ in range(M)] 
for _ in range(N): 
    temp = [int(i) for i in input().split()]    
    for k in range(1,len(temp)):
        Likes[temp[k-1]] -= 1
print(Likes.count(0))


Fixed submission:
N,M = map(int,input().split())
Likes = [N for _ in range(M)] 
for _ in range(N): 
    temp = [int(i) for i in input().split()]    
    for k in range(1,len(temp)):
        Likes[temp[k]-1] -= 1
print(Likes.count(0))
Buggy python submission (verdict: Runtime Error):
N,M = map(int,input().split())
A = list(map(int,input().split()))

dp = [-1 for _ in range(1010)]
dp[0] = 0            

MatchNum = [0,2,5,5,4,5,6,3,7,6]

for i in range(1,1005):
    for x in A:          
        if i-MatchNum[x] >= 0:
            tmp = dp[i-MatchNum[x]]*10 + x
            dp[i] = max(tmp,dp[i])
print(dp[N])


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

dp = [-1 for _ in range(10010)]
dp[0] = 0            

MatchNum = [0,2,5,5,4,5,6,3,7,6]

for i in range(1,10005):
    for x in A:          
        if i-MatchNum[x] >= 0:
            tmp = dp[i-MatchNum[x]]*10 + x
            dp[i] = max(tmp,dp[i])
print(dp[N])
Buggy python submission (verdict: Runtime Error):
N = int(input())
F = []
for i in range(N):
  a,b = map(int,input().split())
  F.append([a+b],a,b)
F.sort(key=lambda x:x[0],reverse=True)
ans = 0
for i in range(N):
  if i%2==0:
    ans += F[i][1]
  else:
    ans -= F[i][2]
print(ans)

Fixed submission:
N = int(input())
F = []
for i in range(N):
  a,b = map(int,input().split())
  F.append([a+b,a,b])
F.sort(key=lambda x:x[0],reverse=True)
ans = 0
for i in range(N):
  if i%2==0:
    ans += F[i][1]
  else:
    ans -= F[i][2]
print(ans)
Buggy python submission (verdict: Time Limit Exceeded):
N,K = map(int,input().split())
TD = [[int(x) for x in input().split()] for _ in range(N)]
TD.sort(key = lambda x: x[1], reverse=True)

T = 0
neta = []
doublecounts = []
ans = []

for i in range(K):
    T += TD[i][1]    
    if not(TD[i][0] in neta):    
        neta.append(TD[i][0])    
    else:      
        doublecounts.append(TD[i][1])    
            
ans.append(T+len(neta)**2)

for i in range(K,N):
    if(len(doublecounts)==0):
        break
    if not(TD[i][0] in neta):
        T -= doublecounts.pop(-1)
        T += TD[i][1]
        neta.append(TD[i][0])
        ans.append(T+len(neta)**2)
print(max(ans))


Fixed submission:
N,K = map(int,input().split())
TD = [[int(x) for x in input().split()] for _ in range(N)]
TD.sort(key = lambda x: x[1], reverse=True)

T = 0
neta = set()
doublecounts = []
ans = []

for i in range(K):
    T += TD[i][1]    
    if not(TD[i][0] in neta):    
        neta.add(TD[i][0])       
    else:      
        doublecounts.append(TD[i][1])    
            
ans.append(T+len(neta)**2)

for i in range(K,N):
    if(len(doublecounts)==0):
        break
    if not(TD[i][0] in neta):
        T -= doublecounts.pop(-1)
        T += TD[i][1]
        neta.add(TD[i][0])   
        ans.append(T+len(neta)**2)
print(max(ans))
Buggy python submission (verdict: Runtime Error):
N,K = map(int,input().split())
H = [int(i) for i in input().split()]

dp = [10**10]*N
dp[0] = 0
for i in range(1,K):
  for j in range(0,i):
    dp[i] = min(dp[i],dp[j]+abs(H[i]-H[j]))
for i in range(K,N):
  for j in range(i-K,i):
    dp[i] = min(dp[i],dp[j]+abs(H[i]-H[j]))
print(dp[-1])


Fixed submission:
N,K = map(int,input().split())
H = [int(i) for i in input().split()]

K=min(K,N-1)
dp = [10**10]*N
dp[0] = 0
for i in range(1,K):
  for j in range(0,i):
    dp[i] = min(dp[i],dp[j]+abs(H[i]-H[j]))
for i in range(K,N):
  for j in range(i-K,i):
    dp[i] = min(dp[i],dp[j]+abs(H[i]-H[j]))
print(dp[-1])

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

dp = [10**10]*N
dp[0] = 0
for i in range(1,K):
  for j in range(0,i):
    dp[i] = min(dp[i],dp[j]+abs(H[i]-H[j]))
for i in range(K,N):
  for j in range(i-K,i):
    dp[i] = min(dp[i],dp[j]+abs(H[i]-H[j]))
print(dp[-1])


Fixed submission:
N,K = map(int,input().split())
H = [int(i) for i in input().split()]

K=min(K,N-1)
dp = [10**10]*N
dp[0] = 0
for i in range(1,K):
  for j in range(0,i):
    dp[i] = min(dp[i],dp[j]+abs(H[i]-H[j]))
for i in range(K,N):
  for j in range(i-K,i):
    dp[i] = min(dp[i],dp[j]+abs(H[i]-H[j]))
print(dp[-1])
Buggy python submission (verdict: Runtime Error):
N,W = map(int,input().split())
dp = [0]*(N+1)
for _ in range(N):
  w,v = map(int,input().split())
  for i in range(W,W-w-1,-1):
    dp[i] = max(dp[i-w]+w,dp[i])
print(max(dp))

Fixed submission:
N,W = map(int,input().split())
dp = [[0]*(W+1) for _ in range(N+1)]
for i in range(N):
  w,v = map(int,input().split())
  for j in range(W+1):
    dp[i+1][j] = max(dp[i+1][j],dp[i][j])
    if j+w<=W:
      dp[i+1][j+w] = max(dp[i][j]+v,dp[i+1][j+w])
print(max(dp[N]))
Buggy python submission (verdict: Time Limit Exceeded):
N,M = map(int,input().split())
dp=[0]*(N+1)
path = [[] for _ in range(N+1)]
for i in range(M):
  x,y = map(int,input().split())
  path[x].append(y)
  dp[y]=-1
  
cur = []
for i in range(1,N+1):
  if dp[i]==0:
    cur.append(i)

while(cur):
  nxt = set()
  for x in cur:
    for y in path[x]:
      dp[y] = max(dp[y],dp[x]+1)
      nxt.add(y)
  cur = []
  for x in nxt:
    cur.append(x)
print(max(dp))

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

path = [[] for _ in range(N)]
pin = [0]*N
for _ in range(M):
  ip,op = map(int,input().split())
  pin[op-1]+=1
  path[ip-1].append(op-1)

cur = []
for i in range(N):
  if pin[i]==0:
    cur.append(i)

ans = 0
while cur:
  ans += 1
  nxt = []
  for ip in cur:
    for op in path[ip]:
      pin[op] -= 1
      if pin[op]==0 and not(op in nxt):
        nxt.append(op)
  cur = [x for x in nxt]
print(ans-1)

Buggy python submission (verdict: Runtime Error):
N,M = map(int,input().split())
dp=[0]*(N+1)
path = [[] for _ in range[N]]
for i in range(M):
  x,y = map(int,input().split())
  path[x].append(y)
  dp[y]=-1
  
cur = []
for i in range(1,N+1):
  if dp[i]==0:
    cur.append(i)

while(cur):
  nxt = set()
  for x in cur:
    for y in path[x]:
      dp[y] = max(dp[y],dp[x]+1)
      nxt.add(y)
  cur = []
  for x in nxt:
    cur.append(y)
print(max(dp))
    
  
  
    

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

path = [[] for _ in range(N)]
pin = [0]*N
for _ in range(M):
  ip,op = map(int,input().split())
  pin[op-1]+=1
  path[ip-1].append(op-1)

cur = []
for i in range(N):
  if pin[i]==0:
    cur.append(i)

ans = 0
while cur:
  ans += 1
  nxt = []
  for ip in cur:
    for op in path[ip]:
      pin[op] -= 1
      if pin[op]==0 and not(op in nxt):
        nxt.append(op)
  cur = [x for x in nxt]
print(ans-1)
Buggy python submission (verdict: Time Limit Exceeded):
import sys
input = sys.stdin.readline

def main():
    N,P = map(int,input().split())
    if N==1:
        print(P)
    else:
        ans = 1
        insuu = 2
        while insuu**N<=P:
            if P%(insuu**N)==0:
                ans *= insuu
                P //= insuu**N
            else:
                insuu += 1
        print(ans)

if __name__ == '__main__':
    main()


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

def main():
    N,P = map(int,input().split())
    if N==1:
        print(P)
    elif N>50:
        print(1)
    else:
        ans = 1
        insuu = 2
        while insuu**N<=P:
            if P%(insuu**N)==0:
                ans *= insuu
                P //= insuu**N
            else:
                insuu += 1
        print(ans)

if __name__ == '__main__':
    main()

Buggy python submission (verdict: Runtime Error):
import sys
input = sys.stdin.readline

def main():
    N,P = map(int,input().split())
    if N==1:
        print(P)
    else:
        ans = 1
        insuu = 2
        while insuu**N<=P:
            if P%(insuu**N)==0:
                ans *= insuu
                P //= insuu**N
            else:
                insuu += 1
        print(ans)

if __name__ == '__main__':
    main()


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

def main():
    N,P = map(int,input().split())
    if N==1:
        print(P)
    elif N>50:
        print(1)
    else:
        ans = 1
        insuu = 2
        while insuu**N<=P:
            if P%(insuu**N)==0:
                ans *= insuu
                P //= insuu**N
            else:
                insuu += 1
        print(ans)

if __name__ == '__main__':
    main()
Buggy python submission (verdict: Runtime Error):
import bisect

N = int(input())
A = list(map(int,input().split()))
A.sort()
ans = 0
L=0
t=31
while(t>0):
    if len(A) == 0:
        break
    if A[-1]<(1<<(t-1)) or (1<<t) <= A[-1]:
        t -= 1
        L = 0
        continue

    large = A.pop(-1)
    small = (1<<t)-large
    if small < A[0] or A[-1]< small:
        t -= 1
        L = 0
        continue
    tmp = bisect.bisect_left(A,(1<<t)-large,lo=L,hi=len(A))
    if tmp == len(A):
        t -= 1
        L = 0
        continue
    if A[tmp] == (1<<t)-large:
        del A[tmp]
        ans += 1
        L = max(0,tmp-1)

print(ans)


Fixed submission:
N = int(input())
A = list(map(int,input().split()))
A.sort(reverse=True)
dic = {}
for a in A:
    dic[a] = dic.get(a,0)+1
ans = 0

for a in A:
    small = (1<<(len(format(a,"b")))) - a
    if small == a:
        if dic[a] >= 2:
            dic[a] -= 2
            ans += 1
        continue
    if dic.get(a,0)>0 and dic.get(small,0)>0:
        dic[a] -= 1
        dic[small] -= 1
        ans += 1
print(ans)

Buggy python submission (verdict: Time Limit Exceeded):
import bisect

N = int(input())
A = list(map(int,input().split()))
A.sort()
ans = 0
L=0
t=31
while(t>0):
    if len(A) == 0:
        break
    if A[-1] >= (1 << t):
        t -= 1
        L = 0
        continue
    if A[-1] < (1 << (t-1)):
        t -= 1
        L = 0
        continue

    large = A.pop(-1)
    tmp = bisect.bisect_left(A,(1<<t)-large,lo=L,hi=len(A))
    if tmp == len(A):
        t -= 1
        L = 0
        continue
    if A[tmp] == (1<<t)-large:
        del A[tmp]
        ans += 1
        L = max(0,tmp-1)

print(ans)


Fixed submission:
N = int(input())
A = list(map(int,input().split()))
A.sort(reverse=True)
dic = {}
for a in A:
    dic[a] = dic.get(a,0)+1
ans = 0

for a in A:
    small = (1<<(len(format(a,"b")))) - a
    if small == a:
        if dic[a] >= 2:
            dic[a] -= 2
            ans += 1
        continue
    if dic.get(a,0)>0 and dic.get(small,0)>0:
        dic[a] -= 1
        dic[small] -= 1
        ans += 1
print(ans)
Buggy python submission (verdict: Runtime Error):
N,X = map(int,input().split())

PforL = [1]
HforL = [1]
for i in range(1,51):
    PforL.append(PforL[i-1]*2+1)
    HforL.append(HforL[i-1]*2+3)

def recursive(n,x):
    if x<=n:
        return 0
    if x<=HforL[n-1]+1:
        return recursive(n-1,x-1)
    else:
        return PforL[n-1]+1+recursive(n-1,x-HforL[n-1]-2)

print(recursive(N,X))


Fixed submission:
D = int(input())
if(D==22):
    print('Christmas Eve Eve Eve')
elif(D==23):
    print('Christmas Eve Eve')
elif(D==24):
    print('Christmas Eve')
else:
    print('Christmas')
Buggy python submission (verdict: Runtime Error):
N,X = map(int,input().split())

PforL = [1]
HforL = [1]
for i in range(1,51):
    PforL.append(PforL[i-1]*2+1)
    HforL.append(HforL[i-1]*2+3)

def recursive(n,x):
    if x<=n:
        return 0
    if x<=HforL[n-1]+1:
        return recursive(n-1,x-1)
    else:
        return PforL[n-1]+1+recursive(n-1,x-HforL[n-1]-2)

print(recursive(N,X))


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

PforL = [1]
HforL = [1]
for i in range(1,51):
    PforL.append(PforL[i-1]*2+1)
    HforL.append(HforL[i-1]*2+3)

ans = 0
while 0<X:
    if(X<((HforL[N]-3)/2)+1):
        X -= 1
        N -= 1
        continue
    if(X==((HforL[N]-3)/2+1)):
        ans+=PforL[N-1]
        break
    if(X==((HforL[N]-3)/2+2)):
        ans+=PforL[N-1]+1
        break
    if(X<HforL[N]-1):
        ans += PforL[N-1]+1
        X -= 2+HforL[N-1]
        N -= 1
        continue
    if(X<=HforL[N]):
        ans += PforL[N]
        break
print(ans)

Buggy python submission (verdict: Runtime Error):
N,X = map(int,input().split())

PforL = [1]
HforL = [1]
for i in range(1,51):
    PforL.append(PforL[i-1]*2+1)
    HforL.append(HforL[i-1]*2+3)

def recursive(n,x):
    if x<=n:
        return 0
    if x<=HforL[n-1]+1:
        return recursive(n-1,x-1)
    if x<HforL[n]:
        return PforL[n-1]+1+recursive(n-1,x-HforL[n-1]-2)

print(recursive(N,X))


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

PforL = [1]
HforL = [1]
for i in range(1,51):
    PforL.append(PforL[i-1]*2+1)
    HforL.append(HforL[i-1]*2+3)

ans = 0
while 0<X:
    if(X<((HforL[N]-3)/2)+1):
        X -= 1
        N -= 1
        continue
    if(X==((HforL[N]-3)/2+1)):
        ans+=PforL[N-1]
        break
    if(X==((HforL[N]-3)/2+2)):
        ans+=PforL[N-1]+1
        break
    if(X<HforL[N]-1):
        ans += PforL[N-1]+1
        X -= 2+HforL[N-1]
        N -= 1
        continue
    if(X<=HforL[N]):
        ans += PforL[N]
        break
print(ans)
Buggy python submission (verdict: Runtime Error):
N,K = map(int,input().split())

A_sum = [0]
[A_sum.append(A_sum[-1]+int(a)) for a in input().split()]

score = []
for r in range(1,N+1):
    for l in range(0,r):
        score.append(A_sum[r]-A_sum[l])

ans = 0
for i in range(40,-1,-1):
    count = 0
    score_a = []
    for j in score:
        if (j & (1<<i)):
            count += 1
            score_a.append(j)
    if count >= K:
        ans += (1<<i)
        score = [i for i in score_a]

print(ans)


Fixed submission:
N = int(input())
A = [int(a) for a in input().split()]

tmp = 100

ave = sum(A)/N

for i in range(N):
    if abs(A[i]-ave) < tmp:
        tmp = abs(A[i]-ave)
        ans = i
print(ans)