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Oct 16th, 2019
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Python 0.35 KB | None | 0 0
  1. def main():
  2.     n = int(input())
  3.     s = input()
  4.     s = list(s)
  5.     s_copy = s
  6.     s_inverse = s[::-1]
  7.     k = 0
  8.     for i in range(n):
  9.         s_copy = s_copy[1:] + s_copy[:1]
  10.         k += 1
  11.         if s_copy == s_inverse:
  12.             break
  13.     if k == n:
  14.         print(-1)
  15.     else:
  16.         print(k)
  17.  
  18.  
  19. if __name__ == "__main__":
  20.     main()
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