← All problemsSign in

Fibonacci

Fibonacci Recall the definition of the Fibonacci numbers: f1=1 f2=2 fn=fn-1+fn-2 (n>=3) Given two numbers a and b, calculate how many Fibonacci numbers are in the range [a,b]. Input: The input contains several test cases. Each test case consists of two non-negative integer numbers a and b. Input is terminated by a=b=0. Otherwise, a100. The numbers a and b are g

HINT LADDERno hints yet
L1 Observation
L2 Technique
L3 Approach
L4 Pseudo-code
🔒
L5 Full solution
L5 unlocks only if you insist twice
solution.cppC++17

CodeSearch Tutor

Hints, not spoilers — it won’t hand over the full solution unless you insist.

voice by Sarvam AI

Sign in to chat with the tutor and save your progress.

Sign in to start