Submission

Score: 80

User: sakuragichan

Problemset: จำนวนเฉพาะ (2560)

Language: cpp

Time: 0.005 second

Submitted On: 2026-09-03 15:43:58

#include <iostream>
using namespace std;
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n;
    cin >> n;

    for (int i = 2; i <= n; i++) {
        bool isPrime = true;
        for (int j = 2; j * j <= i; j++) {
            if (i % j == 0) {
                isPrime = false;
                break;
            }
        }
        if (isPrime) {
            cout << i << endl;
        }
    }
    return 0;
}