Submission

Score: 100

User: bananakung

Problemset: จำนวนเฉพาะก่อนหน้า

Language: cpp

Time: 0.002 second

Submitted On: 2025-07-24 20:44:16

#include<bits/stdc++.h>
using namespace std;
int main()
{
	bool p=true;
	int a,prime[5]={},cu=0,b=0;
	cin>>a;
	for(int i=a-1;i>1;i--)
	{
		p=true;
		for(int j=2;j<=sqrt(i);j++)
		{
			
			if(i%j==0)
			{
				p=false;
				break;
			}
		}
		if(p==true)
		{
			prime[b]=i;
			b++;
			cu++;
		}
		if(cu==5)
		{
			break;
		}
	}
	for(int i=4;i>=0;i--)
	{
		cout<<prime[i]<<' ';
	}
}