Submission

Score: 100

User: picture

Problemset: อนุกรม

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-06 09:38:20

#include <bits/stdc++.h>
using namespace std ;


int main()
{ 
     long long n ,i,a,b,c;
     cin>>n;
     a = 1;
     b = 0 ;
     c = 0 ;
     if(n>90){
         return 0;
     }
     
     for(i=0;i<n;i++){
         a = a+b;
         b=c;
         c=a;
         
         
     }

     std::cout << a << std::endl;
    return 0;
}