Submission

Score: 100

User: Nuttykub

Problemset: อนุกรม

Language: cpp

Time: 0.002 second

Submitted On: 2026-09-30 23:16:03

#include <iostream>
using namespace std;
int main(){
    long long n;
    cin>>n;
    long long i = 1;
    long long j = 0;
    int k = 1;
    while(true){    
        if (k == n) break;
        k++;
        i+=j;
        j=i-j;
    }
    cout << i;
}