Submission

Score: 100

User: samsenpisardmoo26

Problemset: จำนวนเฉพาะก่อนหน้า

Language: cpp

Time: 0.004 second

Submitted On: 2026-10-07 15:52:26

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

int main()
{
    long long n;
    cin >> n;

    int cnt = 0;
    long long arr[5];

    for(long long i=n-1; i>=2 && cnt<5; i--)
    {
        bool prime = true;

        for(long long j=2; j*j<=i; j++)
        {
            if(i%j==0)
            {
                prime = false;
                break;
            }
        }

        if(prime)
        {
            arr[cnt] = i;
            cnt++;
        }
    }

    for(int i=4; i>=0; i--)
    {
        cout << arr[i] << " ";
    }
}