Submission

Score: 100

User: sakuragichan

Problemset: จำนวนเฉพาะก่อนหน้า

Language: cpp

Time: 0.002 second

Submitted On: 2026-09-10 20:44:53

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

int main() {
    int n;
    cin >>n;
    vector<int> prime;
    for (int i = n-1; i > 2 && prime.size() < 5;--i) {
        bool x = true ;
        for (int n = 2 ; n*n <= i;++n) {
            if (i % n == 0) {
                x = false;
                break;
            }
        }
        if (x) {
            prime.push_back(i);
        }
    }
    for (int i = 4 ; i >= 0 ;--i) {
        cout << prime[i] << " ";
    }
    return 0;
}