Submission

Score: 100

User: punzacp555

Problemset: จำนวนเฉพาะ (2560)

Language: cpp

Time: 0.005 second

Submitted On: 2026-09-30 13:31:35

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

int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n;
    cin >> n;

    bool vis[n];
    memset(vis, 0, sizeof(vis));

    for(int i=2; i<n; i++) {
        if(vis[i]) continue;
        cout << i << "\n";
        for(int j=i*i; j<n; j+=i) vis[j] = 1;
    }

    return 0;
}