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N an integer, work out any sum is equal to the num
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Application background Example: n = 19 19 of integers that is: 1-19 Each number can only appear once in the same formula; Such as: 1+19 1+2+17 1+2+3+14 1+2+3+4+10 ..... Key Technology {Num is a natural number and less than n} (0 is not a natural number in a set) And find out how to add all 2 is equal to n For example n=19 19=1+18 19=2+17.....19=9+10 two numbers equal to 19 only 19/2 Thus three numbers only 19/3 Then split two-one of the decomposition is three-digit First 18-1 not because 1 is already so try 2 get the 19=1+16+2 And until you find 6 consisting of three numbers Then continue to find four
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