Submission #2698329

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Source Code Expand

S = list(map(int, list(input())))
n = len(S)

if len(set(S)) == 1:
	print(len(S))
else:
	succ = []
	num = 1
	for i in range(1, n):
		if S[i] == S[i-1]:
			num += 1
			if i == n-1:
				succ.append(num)
		else:
			succ.append(num)
			num = 1
			if i == n-1:
				succ.append(num)

	ans = 2
	if len(succ) == 2:
		print(max(succ))
	else:
		for i in range(1, len(succ)-1):
			m = min(succ[i-1] + succ[i], succ[i] + succ[i+1])
			if ans < m:
				ans = m

		print(ans)

Submission Info

Judge Result