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MathNet 2014 Question 35

Math Olympiad Vault · MathNet 2014

Question 35

The function $f : \mathbb{N}^* \rightarrow \mathbb{N}$ satisfies that $f(2) = 0$, $f(3) \gt 0$, $f(6042) = 2014$ and if $(m, n) \in \mathbb{N}^* \times \mathbb{N}^*$ then $f(m+n) - f(n) - f(m) \in \{0, 1\}$. Find the value of $f(2014)$. Here, $\mathbb{N}^* = \{1, 2, 3, \dots\}$.