Created
September 19, 2015 18:54
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Stock Maximize HackerRank DP Practice
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| from sys import stdin | |
| nex = iter(map(int,stdin.read().split())).next | |
| t = nex() | |
| for _ in xrange(t): | |
| n = nex() | |
| list = [] | |
| for i in xrange(n): | |
| list.append(nex()) | |
| maxi = 0 | |
| sum = 0 | |
| for i in xrange(n-1,-1,-1): | |
| maxi = max(maxi,list[i]) | |
| sum += maxi - list[i] | |
| print sum |
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