[UVA] 10025 - The ? 1 ? 2 ? ... ? n = k problem
The ? 1 ? 2 ? ... ? n = k
problem
The
problem
Given the following formula, one can set operators '+' or '-' instead of each '?', in order to obtain a given k
? 1 ? 2 ? ... ? n = k
For example: to obtain k = 12 , the expression to be used will be: - 1 + 2...
