def main(): S = input() C = S.find('c', 0, ) if C >= 0: W1 = S.find('w', C + 1) if W1 > C: W2 = S.find('w', W1 + 1,) if W2 < 0: print(-1) return elif C >= 0 and W1 - C > 0: if W2 - C == 3: print(3) else: print(W2 - C + 1) else: print(-1) print(C, W1, W2) if __name__ == '__main__': main()