Submission

Score: 100

User: Phupa

Problemset: อนุกรม

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-08 21:53:26

#include <bits/stdc++.h>
using namespace std;
int main()
{
    long a=1,b=1,c,input,i;
    cin>>input;
    if (input==1||input==2)
    {
        cout<<1;
        return 0;
    }
    for (i=0;i<input-2;i++)
    {
        c = a + b;
        a = b;
        b = c;
    }
    cout<<c;
    return 0;
}