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Solutions/Fanta's Solution

PKU 2551. Ones. TLE

21을 예로들면

1 = 1
1 + 10 = 11
1 + 10 + 100 = 105 + 6
1 + 10 + 100 + 1000 = 105 + 21 + 966 + 19
1 + 10 + 100 + 1000 + 10000 = 105 + 21 + 966 + 21 + 9996 + 2
1 + 10 + 100 + 1000 + 10000 + 100000 = 105 + 21 + 966 + 9996 + 21 + 99981

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