Yet Another Staircase Problem

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There is a jail in Chefland. The jail has N cells arranged in a row, numbered 1,2,…,N from left to right. Chef lives in cell 1 of the jail. Being a programmer, he is more interested in counting the number of ways to escape the jail rather than actually trying to escape. So he wants to count the number of ways to reach cell N. Chef is given K non intersecting segments $[L_1,R_1]$, $[L_2,R_2]$, $[

HINT LADDERno hints yet

L1 Observation

L2 Technique

L3 Approach

L4 Pseudo-code

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L5 Full solution

L5 unlocks only if you insist twice

solution.cppC++17

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