Submission

Score: 100

User: Poon

Problemset: อนุกรม

Language: cpp

Time: 0.003 second

Submitted On: 2025-09-21 20:59:34

#include <iostream>
using namespace std;

int main() 
{
  int n;
  cin>>n;
  n--;
  long long x[90];
  x[0]=1;
  x[1]=1;
  for(int k=2;k<90;k++)
  {
    x[k]=x[k-1]+x[k-2];
  }
  cout<<x[n];
}