C++ 알고리즘 - 백준 10870 피보나치 수 5

https://www.acmicpc.net/problem/10870

 

#include <bits/stdc++.h>
#define endl "\n"

using namespace std;

void CPP_INIT() {
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);
}

int fibo(int n) {
	if (n == 0) return 0;
	else if (n == 1 || n == 2) return 1;
	else return fibo(n - 1) + fibo(n - 2);
}

int main(void) {
	CPP_INIT();

	int input;
	cin >> input;

	cout << fibo(input);
}