Submission

Score: 100

User: nate213121

Problemset: จำนวนเฉพาะก่อนหน้า

Language: cpp

Time: 0.002 second

Submitted On: 2026-09-05 14:23:39

#include <bits/stdc++.h>

using namespace std;

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