Submission

Score: 100

User: Mocha_nb

Problemset: อนุกรม

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-07 21:23:49

#include <iostream>
using namespace std;



int main(){
    long long int n=0,m=1,k,sum;
    cin >> k;
    if(k == 0){
        cout << '0';
    }else if(k == 1){
        cout << '1';
    }else{
    for(int i=2;i<=k;i++){
        sum = n+m;
        n=m;
        m = sum;
    }
    cout << sum;
}
}