Submission

Score: 5

User: nicekrittaphat

Problemset: จำนวนเฉพาะก่อนหน้า

Language: cpp

Time: 0.066 second

Submitted On: 2026-10-13 21:27:39

#include <iostream>
using namespace std;

int main() 
{
    long long a;
    cin>>a;
    long long prime[5];
    int ind=0;
    bool Isprime = true;
    for(int i=a-1;i>1;i--){
        Isprime = true;
        for(int j=2;j*j<=i;j++){
            if(i%j==0)Isprime=false;
        }
        if(Isprime){
            prime[ind] = i;
            ind+=1;
        }

    }

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