Submission #2550723

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Source Code Expand

acc = 'b'
n=int(input())
s = input()
count=0
while len(acc) <= n-1:
    count += 1
    if count % 3 == 1:
        acc = 'a'+acc+'c'
    elif count % 3 == 2:
        acc = 'c'+acc+'a'
    else:
        acc = 'b'+acc+'b'
if acc == s:
    print(count)
else:
    print(-1)

Submission Info

Judge Result