Submission

Score: 100

User: Saizon

Problemset: อนุกรม

Language: cpp

Time: 0.003 second

Submitted On: 2026-09-11 22:13:37

#include<iostream>
using namespace std;
long long int a[106];

int main(){
    int b;
    cin >> b;
    a[1] = 1;
    a[2] = 1;
    for(int i=3;i<=b;i++){
        a[i] = a[i-2] + a[i-1];
    }
    cout << a[b];
}