Build on dynamic programming concepts to efficiently solve complex optimization problems.

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Behavioral

# Statement
Given a number `n`, calculate the corresponding Tribonacci number. 
The Tribonacci sequence $T_n$ is defined as: 

|  $T_0 = 0,\space T_1 = 1,\space T_2 = 1$,  and $\space T_{n+3} = T_n + T_{n+1} + T_{n+2},\space$ for $n >= 0$ | 
|------------|------------|------------|------------------------------------------------------| 

The input number, `n`, is a non-negative integer.

**Constraints:**

- $0 \leq$ `n` $\leq 37$
- The answer is guaranteed to fit within a 32-bit integer, i.e., 
answer $\leq 2 ^{31} - 1$

# Examples

Try to solve the  N-th Tribonacci Number problem.

Problem: N-th Tribonacci Number

Statement

Examples

Problem: N-th Tribonacci Number

Statement

Examples