Submission

Score: 100

User: Butter

Problemset: จำนวนเฉพาะก่อนหน้า

Language: cpp

Time: 0.087 second

Submitted On: 2025-11-17 17:53:55

#include <iostream>
using namespace std;

int main(){
	int a;
	int count=1;
	cin>>a;
	int arr[5] = {0};
	int b=0;
	//Numbers loop ( a-1,...,2)
	for(int i=a-1;i>=2;i=i-1){
		//Check primes loop
		for(int j=2;j<i;j=j+1){
			if(i%j==0){
				count=0;
				break;
			}
		}						
		if(count!=0){
			arr[b] = i;
			b=b+1;
		}
		if(b>4){
			break;
		}
		count=1;
	}
	for(int i=4;i>=0;i=i-1){
		cout<<arr[i]<<" ";
	}
}