Submission

Score: 100

User: Bestzu

Problemset: อนุกรม

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-07 15:21:34

#include <bits/stdc++.h>
#define endl '\n'
using namespace std;


int main() {
    ios::sync_with_stdio(false); cin.tie(0);
	
	int n; cin >> n;
	vector<long long> a(n+1);
	a[0] = 0; a[1] = 1; a[2] = 1;
	for(int i = 3; i <= n; i++) {
		a[i] = a[i-1] + a[i-2];
	}
	cout << a[n];
}