Problem 47154. Climbing the stairs

The number of steps in the staircase are given as n. You can climb atmost 3 steps at a time.
Output the number of ways you can climb the stairs modulo (10^9 + 7).
Example:
if n = 1, output = 1, because ways of climbing = { (1) }
if n = 2, output = 2, because ways of climbing = {(1,1), (2)}
if n = 3, output = 4, because ways of climbing = { (1,1,1), (1,2), (2,1), (3) }
Hint : refer tags
Solve

Solution Stats

22.22% Correct | 77.78% Incorrect
Last Solution submitted on Nov 19, 2025

Solution Comments

Show comments

Problem Recent Solvers6

Suggested Problems

More from this Author5

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!