Submission

PPPPPTTTTT

Score: 50

User: exoworldgd

Problemset: อนุกรม

Language: cpp

Time: 1.094 second

Submitted On: 2024-12-14 17:47:25

#include <iostream>
using namespace std;
int fi(int n) {
	if (n == 1) return 0;
	else if (n == 2) return 1;
	else return fi(n-1) +fi(n-2);
}
int main(void) {
	int n;
	cin >> n;
	cout << fi(n+1);
}