Submission

Score: 100

User: erng

Problemset: จำนวนเฉพาะก่อนหน้า

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-07 21:13:23

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

int n, k,num[5], c;

int main()
{
    cin>>n;
    for (int i=n-1; i>=0; i--)
    {
        if (c==5) break;
        for (int j=2; j*j<=i; j++)
        {
            if (i%j==0)
            {
                k=1;
                break;
            }
        }
        if (k!=1)
        {
            num[c]=i;
            c++;
        }
        k=0;
    }
    for (int i=4; i>=0; i--)
    {
        cout<<num[i]<<" ";
    }
}