Harryxun/GPT-100-sft-dataset huggingface dataset:
Problem p02557 (python)

Fixed submission:

from collections import Counter
def resolve():
    N = int(input())
    A = list(map(int, input().split()))
    B = list(map(int, input().split()))

    CNT = Counter(A+B)
    num = CNT.most_common()[0][1]
    if num > N:
        print("No")
        return 

    j, pre = 0, -1
    for i in range(N):
        if A[i] != pre:
            j = 0
        if A[i] == B[i]:
            while j < N:
                if A[i] != B[j] and A[j] != B[i]:
                    B[i], B[j] = B[j], B[i]
                    break
                j += 1
        pre = A[i]

    print('Yes')
    print(*B)


if __name__ == "__main__":
    resolve()

Buggy submission (verdict: Runtime Error):

from collections import Counter
def resolve():
    N = int(input())
    A = list(map(int, input().split()))
    B = list(map(int, input().split()))

    CNT = Counter(A + B)
    num = CNT.most_common()[0][1]
    if num > N:
        print("No")
        return

    j = 0
    for i in range(N):
        if A[i] == B[i]:
            for _ in range(N):
                j += 1
                if A[i] != B[j] and A[j] != B[i]:
                    B[i], B[j] = B[j], B[i]
                    break
                if j == N - 1:
                    j = -1

    print('Yes')
    print(*B)


if __name__ == "__main__":
    resolve()

Buggy submission (verdict: Runtime Error):

from collections import Counter
def resolve():
    N = int(input())
    A = list(map(int, input().split()))
    B = list(map(int, input().split()))

    CNT = Counter(A + B)
    num = CNT.most_common()[0][1]
    if num > N:
        print("No")
        return

    j = 0
    for i in range(N):
        if A[i] == B[i]:
            for _ in range(N):
                j += 1
                if A[i] != B[j] and A[j] != B[i]:
                    B[i], B[j] = B[j], B[i]
                    break
                if j == N - 1:
                    j = 0

    print('Yes')
    print(*B)


if __name__ == "__main__":
    resolve()
Problem p02682 (python)

Fixed submission:

def resolve():
    A, B, C, K = map(int, input().split())

    ans = 0
    cnt = min(K, A)
    ans += cnt * 1
    K -= cnt
    if K < 1:
        return print(ans)

    cnt = min(K, B)
    ans += cnt * 0
    K -= cnt
    if K < 1:
        return print(ans)

    ans += K * -1

    print(ans)

if __name__ == "__main__":
    resolve()

Buggy submission (verdict: Runtime Error):

def resolve():
    a, b,c,k = map(int, input().split())

    ans = 0
    used = min(k,a)
    ans += used * 1
    k -= used
    used = min(k, b)
    k -= used
    ans += k*(-1)
    print(ans)

if __name__ == "__main__":
    unittest.main()
Problem p02707 (python)

Fixed submission:

from collections import Counter
def resolve():
    N = int(input())
    A = list(map(int, input().split()))
    C = Counter(A)

    for i in range(1, N+1):
        print(C[i])

if __name__ == "__main__":
    resolve()

Buggy submission (verdict: Runtime Error):

from collections import Counter
def resolve():
    N = int(input())
    A = list(map(int, input().split()))
    C = Counter(A)

    for i in range(1, N+1):
        print(C[i])

if __name__ == "__main__":
    unittest.main()
Problem p02754 (python)

Fixed submission:
import sys
sys.setrecursionlimit(10 ** 7)
read = sys.stdin.buffer.read 
inp = sys.stdin.buffer.readline
def inpS(): return inp().rstrip().decode()
readlines = sys.stdin.buffer.readlines 
MOD = 10**9+7

N, a, b = map(int, inp().split())
ans = N//(a+b) * a
rest = N%(a+b)
ans += min(a, rest)
print(ans)

Buggy submission (verdict: Runtime Error):
import sys
sys.setrecursionlimit(10 ** 7)
read = sys.stdin.buffer.read 
inp = sys.stdin.buffer.readline
def inpS(): return inp().rstrip().decode()
readlines = sys.stdin.buffer.readlines 
MOD = 10**9+7

N, a, b = map(int, inp().split())
ball = ""
while len(ball) < N:
  ball += "b"*a
  ball += "r"*b
  
ans = ball[:N].count("b")
print(ans)
Problem p02757 (python)

Fixed submission:

def resolve():
    l, P = map(int, input().split())
    S = input()

    ans = 0
    # 10^r: 2^r * 5^r の為、10と同じ素数
    if P == 2 or P == 5:
        for i, s in enumerate(S):
            if int(s) % P == 0:
                ans += i + 1
        return print(ans)

    cnts = [0] * P
    cnts[0] = 1
    num, d = 0, 1
    for s in S[::-1]:
        s = int(s)
        num = (num + (s * d)) % P
        d = (10 * d) % P
        cnts[num] += 1

    for cnt in cnts:
        ans += cnt * (cnt - 1) // 2
    print(ans)


if __name__ == "__main__":
    resolve()

Buggy submission (verdict: Runtime Error):

def resolve():
    l, P = map(int, input().split())
    S = input()[::-1]

    ans = 0
    # 10^r: 2^r * 5^r の為、10と同じ素数
    if P == 2 or P == 5:
        for i in range(l):
            s = int(S[i])
            if s % P == 0:
                ans += i + 1
        return print(ans)

    cnts = [0] * (l + 1)
    cnts[0] = 1
    num, d = 0, 1
    for i in range(l):
        s = int(S[i])
        num += s * d
        d *= 10
        num %= P
        d %= P
        cnts[num] += 1

    for cnt in cnts:
        ans += cnt * (cnt - 1) // 2
    print(ans)


if __name__ == "__main__":
    resolve()
Problem p02948 (python)

Fixed submission:
from heapq import heappush, heappushpop

N, M = map(int, input().split())
tasks = [[] for _ in range(M+1)]
for _ in range(N):
  a, b = map(int, input().split())
  if a <= M:
    tasks[M-a].append(b)

q = []
for day in range(M+1):
  for v in tasks[day]:
    if len(q) < day+1:
      heappush(q, v)
    else:
      heappushpop(q,v)
print(sum(q))

Buggy submission (verdict: Runtime Error):
from heapq import heappush, heappop

N, M = map(int, input().split())
AB = [[] for _ in range(M+1)]
for _ in range(N):
  a, b = map(int, input().split())
  AB[a].append(b) # 消化日数に対しての価値
  
#heapq.heapify(a)  # listを優先度付きキューに

q = []
ans = 0
for B in AB:
  for b in B: # 日数：価値
    heappush(q, -b) # 最大値のため、マイナスをかける
  if q:
    ans -= heappop(q) # マイナスの値を戻す
print(ans)
Problem p03042 (python)

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

S = input().rstrip()
l = [0]*2
y = S[:2]
m = S[2:]
l[0] = 0 if "01" <= y <= "12" else 1
l[1] = 1 if "01" <= m <= "12" else 0

if l[0] == 0 and l[1] == 1:
  print("AMBIGUOUS")
elif l[0] == 1 and l[1] == 1:
  print("YYMM")
elif l[0] == 0 and l[1] == 0:
  print("MMYY")  
else:
  print("NA")

Buggy submission (verdict: Runtime Error):
S = int(input())
yymm = S//100
mmyy = S%100
yymm = (1<=y<=12)
mmyy = (1<=x<=12)

ans = "NA"
if yymm and mmyy:
    answer = 'AMBIGUOUS'
elif yymm and not(mmyy):
    answer = 'YYMM'
elif mmyy and not(yymm):
    answer = 'MMYY'

print(ans)
Problem p02577 (python)

Fixed submission:
n = int(input())
 
if n%9 == 0:
  print("Yes")
else:
  print("No")

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

if n%9 == 0:
  print("Yes")
else:
  print("No")

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

totL = 0
for i in n:
  total += int(i)
if total % 9 == 0:
  print("Yes")
else:
  print("No")
Problem p02987 (python)

Fixed submission:
import sys
s = input()
s = s.replace(s[0],'')
if len(s) == 0:
    print('No')
    sys.exit()
else:
    s = s.replace(s[0],'')
if len(s) == 0:
    print('Yes')
else:
    print('No')

Buggy submission (verdict: Runtime Error):
s = input()
s = s.replace(s[0],'')
if len(s) == 0:
    print('No')
    break
else:
    s = s.replace(s[0],'')
if len(s) == 0:
    print('Yes')
else:
    print('No')

Buggy submission (verdict: Runtime Error):
s = input()
s = s.replace(s[0],'')
s = s.replace(s[0],'')
if len(s) == 0:
    print('Yes')
else:
    print('No')

Buggy submission (verdict: Runtime Error):
s = input()
s = s.replace(s[0],'')
s = s.replace(s[0],'')
if len(s) == 0:
    print('Yes')
else:
    print('No')

Buggy submission (verdict: Runtime Error):
s = input()
s = s.replace(s[0],'')
s = s.replace(s[0],'')
if len(s) == 0:
    print('Yes')
else:
   print('No')
Problem p02550 (python)

Fixed submission:
# -*- coding: utf-8 -*-
# 標準入力を取得
N, X, M = list(map(int, input().split()))

# 求解処理
s = {X}
l = [X]
i = 0
while True:
    a = l[-1]**2 % M
    if a in s:
        i = l.index(a)
        break
    else:
        s.add(a)
        l.append(a)

loop_length = len(l) - i
loop_cnt = (N - i) // loop_length
loop_res = (N - i) % loop_length
ans = sum(l[:i]) + loop_cnt * sum(l[i:]) + sum(l[i: i + loop_res])

# 結果出力
print(ans)

Buggy submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
# 標準入力を取得
N, X, M = list(map(int, input().split()))

# 求解処理


def f(x: int, m: int) -> int:
    return x**2 % m


A = {X}
loop_start_index = 0
while True:
    A_next = f(A[-1], M)
    if A_next in A:
        loop_start_index = A.index(A_next)
        break
    else:
        A.add(A_next)

loop_length = len(A) - loop_start_index
loop_cnt = (N - loop_start_index) // loop_length
loop_res = (N - loop_start_index) % loop_length
ans = sum(A[:loop_start_index]) + \
    loop_cnt * sum(A[loop_start_index:]) + \
    sum(A[loop_start_index: loop_start_index + loop_res])

# 結果出力
print(ans)
Problem p02623 (python)

Fixed submission:
# -*- coding: utf-8 -*-
# 標準入力を取得
N, M, K = list(map(int, input().split()))
A = list(map(int, input().split()))
B = list(map(int, input().split()))

# 求解処理
a, b = [0], [0]
for i in range(N):
    a.append(a[i] + A[i])
for j in range(M):
    b.append(b[j] + B[j])

ans, j = 0, M
for i in range(N + 1):
    if a[i] > K:
        break
    while b[j] > K - a[i]:
        j -= 1
    ans = max(ans, i + j)

# 結果出力
print(ans)

Buggy submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
# 標準入力を取得
N, M, K = list(map(int, input().split()))
A = list(map(int, input().split()))
B = list(map(int, input().split()))

# 求解処理
a, b = [0], [0]
for i in range(N):
    a.append(a[i] + A[i])
for j in range(M):
    b.append(b[i] + B[i])

ans, j = 0, M
for i in range(N + 1):
    if a[i] > K:
        break
    while b[j] > K - a[i]:
        j -= 1
    ans = max(ans, i + j)

# 結果出力
print(ans)

Buggy submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
# 標準入力を取得
N, M, K = list(map(int, input().split()))
A = list(map(int, input().split()))
B = list(map(int, input().split()))

# 求解処理
ans = 0
n, m, k = 0, 0, 0
while True:
    if n >= N and m >= M:
        break
    if n >= N:
        k += B[m]
        if k > K:
            break
        ans += 1
        m += 1
        continue
    if m >= M:
        k += A[n]
        if k > K:
            break
        ans += 1
        n += 1
        continue
    A_n, B_m = A[n], B[m]
    if A_n < B_m:
        k += A_n
        n += 1
    elif A_n > B_m:
        k += B_m
        m += 1
    else:
        if n == N:
            k += B_m
            m += 1
        elif m == M:
            k += A_n
            n += 1
        else:
            A_nn, B_mm = A[n+1], B[m+1]
            if A_nn <= B_mm:
                k += A_n
                n += 1
            else:
                k += B_m
                m += 1
    if k > K:
        break
    ans += 1

# 結果出力
print(ans)
Problem p02629 (python)

Fixed submission:
# -*- coding: utf-8 -*-
# 標準入力の取得
N = int(input())


def num_to_alpha(num):
    if num <= 26:
        return chr(96 + num)
    elif num % 26 == 0:
        return num_to_alpha(num // 26 - 1)+chr(122)
    else:
        return num_to_alpha(num // 26) + chr(96 + num % 26)


# 求解処理
ans = num_to_alpha(N)

# 結果出力
print(ans)

Buggy submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
from numba import njit, void, i8


def get_input() -> int:
    """
    標準入力を取得する.

    Returns:\n
        int: 標準入力
    """
    N = int(input())

    return N


@njit(void(i8))
def main(N: int) -> None:
    """
    求解処理.

    Args:\n
        N (int): 整数
    """
    # 求解処理
    ans = ""
    while N > 0:
        N -= 1
        ans += chr(ord("a") + N % 26)
        N //= 26
    ans = ans[::-1]

    # 結果出力
    print(ans)


if __name__ == "__main__":
    N = get_input()
    main(N)
Problem p02729 (python)

Fixed submission:
# -*- coding: utf-8 -*-
# 標準入力の取得
N, M = list(map(int, input().split()))

# 求解処理
result = int(N*(N-1)/2 + M*(M-1)/2)

# 結果出力
print(result)

Buggy submission (verdict: Runtime Error):
# -*- coding: utf-8 -*-
# モジュールのインポート
from scipy.special import comb

# 標準入力の取得
N, M = list(map(int, input().split()))

# 求解処理
result = comb(N, 2, exact=True) + comb(M, 2, exact=True)

# 結果出力
print(result)
Problem p02596 (python)

Fixed submission:
def main():
    K = int(input())
    if K%2 == 0 or K%5==0:
        return -1

    if K % 7 == 0:
        L = K * 9 // 7
    else:
        L = K * 9
    
    for i in range(1, 10000000):
        x = pow(10, i, L)
        if x == 1:
            return i
    else:
        return -1


if __name__ == "__main__":
    ans = main()
    print(ans)

Buggy submission (verdict: Runtime Error):
def main():
    K = int(input())
    if K%2 == 0 or K%5==0:
        return -1

    if K % 7 == 0:
        L = K * 9 / 7
    else:
        L = K * 9
    
    for i in range(1, 10000000):
        x = pow(10, i, L)
        if x == 1:
            return i
    else:
        return -1


if __name__ == "__main__":
    ans = main()
    print(ans)
Problem p02549 (python)

Fixed submission:
# inp.readline()
# int(inp.readline())
# out.write()
# raw_input()
# map(int,raw_input().split())
# map(int,inp.readline().split())
# for _ in xrange(input()):
# print "Case #"+str(_+1)+": "+ 
if __name__ == "__main__":
    from sys import stdin as inp, stdout as out,setrecursionlimit as srl
    from collections import Counter,defaultdict,deque
    from heapq import *
    for _ in xrange(1):
        n,k=map(int,inp.readline().split())
        a=[map(int,inp.readline().split()) for i in xrange(k)]
        b=[0]*(n+1)
        b[1]=1
        mod=998244353
        for i in xrange(2,n+1):
          b[i]=b[i-1]
          for l,r in a:
            b[i]=(b[i]+b[max(0,i-l)]-b[max(0,i-r-1)])%mod
        print (b[-1]-b[-2])%mod

Buggy submission (verdict: Runtime Error):
# inp.readline()
# int(inp.readline())
# out.write()
# raw_input()
# map(int,raw_input().split())
# map(int,inp.readline().split())
# for _ in xrange(input()):
# print "Case #"+str(_+1)+": "+ 
if __name__ == "__main__":
    from sys import stdin as inp, stdout as out,setrecursionlimit as srl
    from collections import Counter,defaultdict,deque
    from heapq import *
    def upd(idx,v):
      while idx<len(b):
        b[idx]=(b[idx]+v)%mod
        idx+=(idx&-idx)
    def acc(idx):
        s=0
        while idx>0:
            s=(s+b[idx])%mod
            idx-=(idx&-idx)
        return s
    for _ in xrange(1):
        n,k=map(int,inp.readline().split())
        a=[map(int,inp.readline().split()) for i in xrange(k)]
        b=[0]*(n+1)
        b[1]=1
        mod=998244353
        for i in xrange(2,n+1):
          for l,r in a:
            upd(i,acc(i-l+1)-acc(max(0,i-r)))
        print (acc(n+1)-acc(n))%mod
Problem p02552 (python)

Fixed submission:
print input()^1

Buggy submission (verdict: Runtime Error):
print input()^1
Problem p02688 (python)

Fixed submission:
n, k = map(int, input().split())
snuke = [1 for i in range(n)]
for _ in range(k):
	d = int(input())
	a = list(map(int, input().split()))
	for i in a:
		snuke[i -1] = 0
		
print(sum(snuke))

Buggy submission (verdict: Runtime Error):
n, k = map(int, input().split())
snuke = [1 for i in range(n)]
for _ in range(k):
	d = int(input())
	a = list(map(int, input().split()))
	for i in range(a):
		snuke[i -1] = 0
		
print(sum(snuke))
Problem p02699 (python)

Fixed submission:
s,w = map(int,input().split())
if s > w:
    print("safe")
else:
     print("unsafe")

Buggy submission (verdict: Runtime Error):
S, W = int(input())
if S > W:
	print('safe')
else:
	print('unsafe')
Problem p02729 (python)

Fixed submission:
n, m = map(int, input().split())
print(n * (n - 1) // 2 + m * (m -1) // 2)

Buggy submission (verdict: Runtime Error):
n, m = map(int, input().split())
print(n * (n-1) // 2 + m * (m-1) // 2)
Problem p02771 (python)

Fixed submission:
a = list(map(int, input().split()))
if len(set(a)) == 2:
    print('Yes')
else:
    print('No')

Buggy submission (verdict: Runtime Error):
a, b, c  = list(map(int, input().split()))
if len(set(a)) == 2:
    print('Yes')
else:
    print('No')
Problem p02777 (python)

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

if s == u:
    print(a - 1 , b)
else:
    print(a, b - 1)

Buggy submission (verdict: Runtime Error):
s, t = input().split()
a, b = map(int, input().split())
u = input()

if s == u:
    print(s - 1 , t)
else:
    print(s, t - 1)
Problem p02933 (python)

Fixed submission:
a = int(input())
s = input()
if a >= 3200:
	print(s)
else:
	print('red')

Buggy submission (verdict: Runtime Error):
a = input().split()
s = input()
if a >= 3200:
	print(s)
else:
	print('Red')
Problem p02546 (python)

Fixed submission:
S=input()
if S[-1] == 's':
	S=S+'es'
else:
	S=S+'s'
print(S)

Buggy submission (verdict: Runtime Error):
import sys
S=""
S=sys.argv[1]
len(S)<=1000
if S[-1] == 's':
   S=S+'es'
else:
	S=S+'s'
print(S)

Buggy submission (verdict: Runtime Error):
import sys
S=""
S=sys.argv[1]
if S[-1] == 's':
   S=S+'es'
else:
	S=S+'s'
print(S)

Buggy submission (verdict: Runtime Error):
import sys
S=""
S=sys.argv[1]
if S[-1] == 's':
   S=S+'es'
else:
	S=S+'s'
print(S)
Problem p02627 (python)

Fixed submission:
def main():
    alpha = input()
    if alpha.isupper():
        print('A')
    else:
        print('a')


if __name__ == "__main__":
    main()

Buggy submission (verdict: Runtime Error):
def main():
    N = int(input())
    ans = ''

    while N > 0:
        N -= 1
        ans += chr(ord('a') + N % 26).lower()
        N = N // 26
    print(ans[::-1])


if __name__ == "__main__":
    main()
Problem p02622 (python)

Fixed submission:
a = input()
b = input()
cnt = 0
for i in range(len(a)):
    if a[i]!=b[i]:
        cnt+=1
print(cnt)

Buggy submission (verdict: Runtime Error):
a=input()
b = input()
cnt = 0
for i  on range(len(a)):
    if a[i]!=b[i]: cnt+=1
print(cnt)
Problem p02847 (python)

Fixed submission:
days = ["SUN", "MON", "TUE","WED", "THU", "FRI", "SAT"]
s = input()
print(7-days.index(s))

Buggy submission (verdict: Runtime Error):
days = ["SUN", "MON", "TUE,","WED", "THU", "FRI", "SAT"]
s = input()
print(7-days.index(s))
Problem p02659 (python)

Fixed submission:
import math


def main() -> None:
    a, b = input().split()

    print((int(a)*int(b.replace('.', ''))) // 100)

    return


if __name__ == '__main__':
    main()

Buggy submission (verdict: Runtime Error):
import math


def main() -> None:
    a, b = input().split()

    print((int(a) * (int(b)*100)) // 100)

    return


if __name__ == '__main__':
    main()

Buggy submission (verdict: Runtime Error):
import math


def main() -> None:
    a, b = input().split()

    print((int(a) * (int(b)*100)) // 100)
    retz


if __name__ == '__main__':
    main()

Buggy submission (verdict: Runtime Error):
import math


def main() -> None:
    a, b = input().split()

    print(math.floor(int(a) * int(b*100) / 100))

    return


if __name__ == '__main__':
    main()

Buggy submission (verdict: Runtime Error):
import math


def main() -> None:
    a, b = input().split()

    print(math.floor(a * (b*100) / 100))

    return


if __name__ == '__main__':
    main()

Buggy submission (verdict: Runtime Error):
import math


def main() -> None:
    a, b = map(int, input().split())

    print(math.floor(a * b))
    
    return


if __name__ == '__main__':
    main()
Problem p02793 (python)

Fixed submission:
from fractions import *
n,*a=map(int,open(0).read().split())
b=1
for i in a:b*=i//gcd(b,i)
print(sum(b//i for i in a)%(10**9+7))

Buggy submission (verdict: Runtime Error):
def main():
    from fractions import gcd

    n = int(input())
    num_list = list(map(int, input().split()))

    l = 1
    for num in num_list:
        l *= num // gcd(l, num)

    answer = 0
    for num in num_list:
        answer += l // num
        answer %= 1e9 + 7

    print(int(answer))


if __name__ == '__main__':
    main()
Problem p02546 (python)

Fixed submission:
S = input()
if S[len(S)-1] == 's':
    answer = S + 'es'
else:
    answer = S + 's'
print(answer)

Buggy submission (verdict: Runtime Error):
N = int(input())
A = 1
B = 1
C = 1
answer = 0
while C < N:
    B = 1
    while B < N:
        A = 1
        while A < N:
            if (A * B) + C == N:
                answer += 1

            A += 1

        B += 1

    C += 1

print(answer)
Problem p02736 (python)

Fixed submission:
import sys
import math
from collections import defaultdict
from bisect import bisect_left, bisect_right

sys.setrecursionlimit(10**7)
def input():
    return sys.stdin.readline()[:-1]

mod = 10**9+7

def I(): return int(input())
def LI(): return list(map(int, input().split()))
def LIR(row,col):
    if row <= 0:
        return [[] for _ in range(col)]
    elif col == 1:
        return [I() for _ in range(row)]
    else:
        read_all = [LI() for _ in range(row)]
        return map(list, zip(*read_all))

#################

# nC0~nCn odd or even
def nCk(n):
    num = [0]*(n+1)
    for i in range(n+1):
        now = 2
        while now <= i:
            num[i] += i//now
            now *= 2
    #cumnum = [num[0]]
    #for i in range(1,n+1):
    #    cumnum.append(cumnum[-1]+num[i])
    ret = [0]*(n+1)
    for i in range(n+1):
        if num[n] > num[i]+num[n-i]:
            ret[i] = 0
        else:
            ret[i] = 1
    return ret

N = I()

A = list(input())
a = [0]*N
for i in range(N):
    a[i] = int(A[i])

b = [0]*(N-1)
for i in range(N-1):
    b[i] = abs(a[i]-a[i+1])

flag = False
for i in range(N-1):
    if b[i] == 1:
        flag = True
        break

nlist = nCk(N-2)

ans = 0
if not flag:
    for i in range(N-1):
        ans += nlist[i]*b[i]
        ans %= 4
    print(ans)
    #raise(ValueError)
else:
    for i in range(N-1):
        ans += nlist[i]*(b[i]%2)
        ans %= 2
    print(ans)
    #raise(ValueError)

Buggy submission (verdict: Runtime Error):
import sys
import math
from collections import defaultdict
from bisect import bisect_left, bisect_right

sys.setrecursionlimit(10**7)
def input():
    return sys.stdin.readline()[:-1]

mod = 10**9+7

def I(): return int(input())
def LI(): return list(map(int, input().split()))
def LIR(row,col):
    if row <= 0:
        return [[] for _ in range(col)]
    elif col == 1:
        return [I() for _ in range(row)]
    else:
        read_all = [LI() for _ in range(row)]
        return map(list, zip(*read_all))

#################

# nC0~nCn odd or even
def nCk(n):
    num = [0]*(n+1)
    for i in range(n+1):
        now = 2
        while now <= i:
            num[i] += i//now
            now *= 2
    cumnum = [num[0]]
    for i in range(1,n+1):
        cumnum.append(cumnum[-1]+num[i])
    ret = [0]*(n+1)
    for i in range(n+1):
        if cumnum[n] > cumnum[i]+cumnum[n-i]:
            ret[i] = 0
        else:
            ret[i] = 1
    return ret

N = I()
A = list(input())
a = [0]*N
for i in range(N):
    a[i] = int(A[i])

b = [0]*(N-1)
for i in range(N-1):
    b[i] = abs(a[i]-a[i+1])

flag = False
for i in range(N-1):
    if b[i] == 1:
        flag = True
        break

nlist = nCk(N-2)

ans = 0
if not flag:
    for i in range(N-1):
        ans += nlist[i]*b[i]
        ans %= 4
    print(ans)
    #raise(ValueError)
else:
    for i in range(N-1):
        ans += nlist[i]*(b[i]%2)
        ans %= 2
    #print(ans)
    raise(ValueError)