Help me in solving WELLLEFT problem

help
,
1

My issue

For test case (5,4,4)
How the valid answer is (4,4), (4,5) , here if B>=A, then how the frog will be able to climb if the difference between them is not greater than 1

My code

#include <bits/stdc++.h>
using namespace std;

int main() {
	// your code goes here

}

Problem Link: Amphibian Escape Practice Coding Problem

2

if A>=h then the frog is out of well so B will not take effect