Submission

Score: 100

User: Phat12

Problemset: อนุกรม

Language: cpp

Time: 0.002 second

Submitted On: 2025-08-24 16:00:24

#include <bits/stdc++.h>
#define all(x) x.begin(),x.end()
#define rizz ios_base::sync_with_stdio(false);cin.tie(nullptr)
#define int long long
const int MOD = 1e9+7;
const int diri[] = {0,0,-1,1};
const int dirj[] = {1,-1,0,0};
using namespace std;
template<class T>
using minheap = priority_queue<T,vector<T>,greater<T>>;
using pii = pair<int,int>;
int32_t main(){
    rizz;
    int n;
    cin >> n;
    int l=0,r=1;
    for (int i=1;i<n;i++){
        l+=r;
        swap(l,r);
    }
    cout << r;
    return 0;
}