Submission

Score: 95

User: 666whynot

Problemset: จำนวนเฉพาะก่อนหน้า

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-03 15:45:26

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

int prime(int n){
    if(n < 2)return 0;
    for(int i=2;i*i<n;i++){
        if(n % i == 0)return 0;
    }
    return 1;
}
int main(){
    ios::sync_with_stdio(false);cin.tie(nullptr);
    int n;cin>>n;   
    vector<int> v;
    for(int i=n-1;i>=2;i--){
        if(prime(i)){
            v.push_back(i);
            if(v.size() == 5)break;
        }
    }
    sort(v.begin(),v.end());
    for(auto a:v)cout << a << ' ';
}