Rabbits

#include <iostream>
#include <vector>

using namespace std;

int count_rabbit_population_in_interval(int a, int b) {
    vector<long long> fib = {1, 1};

    while (fib.back() <= b) {
        fib.push_back(fib[fib.size() - 1] + fib[fib.size() - 2]);
    }

    int count = 0;
    for (long long x : fib) {
        if (x >= a && x <= b) {
            count++;
        }
    }
    return count;
}

int main() {
    int a, b;
    cin >> a >> b;

    cout << count_rabbit_population_in_interval(a, b) << endl;

}

Test 1

Verdict: WRONG ANSWER

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED

Test 4

Verdict: ACCEPTED

Test 5

Verdict: ACCEPTED

Test 6

Verdict: ACCEPTED

Test 7

Verdict: WRONG ANSWER

Test 8

Verdict: ACCEPTED

Test 9

Verdict: ACCEPTED

Test 10

Verdict: ACCEPTED

Test 11

Verdict: ACCEPTED

Test 12

Verdict: WRONG ANSWER

Test 13

Verdict: WRONG ANSWER

Test 14

Verdict: ACCEPTED

Test 15

Verdict: WRONG ANSWER

Test 16

Verdict: ACCEPTED

Test 17

Verdict: ACCEPTED

Test 18

Verdict: WRONG ANSWER

Test 19

Verdict: WRONG ANSWER

Test 20

Verdict: WRONG ANSWER

Test 21

Verdict: ACCEPTED

Test 22

Verdict: ACCEPTED

Test 23

Verdict: ACCEPTED