Submission

Score: 100

User: solarsunny

Problemset: อนุกรม

Language: cpp

Time: 0.002 second

Submitted On: 2025-09-28 18:19:22

#include <bits/stdc++.h>

using namespace std;

int main()
{
    int n=0;
    cin >> n;
    long long a=1;
    long long b=1;
    long long s=1;
    for(int i=0; i<n-2; i++) {
        s = a+b;
        a = b;
        b = s;
    }
    cout << s << endl;
}