Submission

Score: 100

User: IIIIIIIIIIII

Problemset: อนุกรม

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-15 13:39:55

#include <iostream>
using namespace std;

long long n, a0=1, a1=1;
void sum(long long n){
    if(n==1) cout << n;
    else{
        for(long long i=2;i<n;i++){
            long long temp = a0+a1;
            a0 = a1;
            a1 = temp;
        }cout <<  a1;
    }
}

int main(){
    cin >> n;
    sum(n);
}