Submission

Score: 100

User: zenta4u

Problemset: Fibonacci Croissant

Language: cpp

Time: 0.002 second

Submitted On: 2025-10-01 10:41:53

// Online C++ compiler to run C++ program online
#include <iostream>
using namespace std;
int main() {
    long long n,a=0,b=1,c=0;
    cin >>n;
    for(long long i=2;i<=n+2;i++){
        a=b+c;
        c=b;
        b=a;
    }
    cout<<b-1;
    
}