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WA when doing Dimension compression?
Link to problem : http://codeforces.net/problemset/problem/543/A
DP solution with 501*501*501 memory (MLE but gives correct results when tested on PC) : http://ideone.com/edQhJr
DP solution with 2*501*501 memory ( dimension compressed) : gives WA on sample? : http://ideone.com/YNbwRO
Anyone has an idea why? Thanks.
