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An interesting problem
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def rob(x): | |
rewards = [-1] * len(x) | |
tracks = [-1] * len(x) | |
rewards[0] = x[0]; rewards[1] = x[1] | |
tracks[0] = 0; tracks[1] = 1 | |
best_end = 0 if rewards[0] > rewards[1] else 1 | |
for i in range(2, len(x)): | |
for j in range(0,i-1): | |
if rewards[j] + x[i] > rewards[i]: | |
rewards[i] = rewards[j] + x[i] | |
tracks[i] = j | |
if rewards[i] > rewards[best_end]: | |
best_end = i | |
final_track = [best_end] | |
final_reward = rewards[best_end] | |
while tracks[best_end] != best_end: | |
best_end = tracks[best_end] | |
final_track.append(best_end) | |
return final_reward, list(reversed(final_track)) | |
print(rob([1, 3, 7, 3, 11, 9, 2, 10])) | |
print(rob([1, 3, 7, 3, 2, 9, 10, 1])) | |
print(rob([1, 2, 3])) |
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