Submission

Score: 100

User: nunos

Problemset: อนุกรม

Language: cpp

Time: 0.002 second

Submitted On: 2025-09-30 12:17:59

#include <bits/stdc++.h>
using namespace std;

int main() {
    
    int x;cin>>x;
    unsigned long long int z[x]={0};
    z[0]=1;z[1]=1;
    int l=0;
    if(x==0 || x==1){cout << "1";return 0;}
    for(int i=2;i<x;i++){
        z[i] =z[i-2]+z[i-1];
    }
    cout << z[x-1];
    return 0;
}