Submission

Score: 100

User: USERNAME

Problemset: จำนวนเฉพาะ (2560)

Language: cpp

Time: 0.005 second

Submitted On: 2026-10-01 14:07:17

#include<iostream>
#include<cmath>
using namespace std;
int main(){
	int a,prime,num=0;
	cin >> a;\
	a--;
	if(a>1){
		num = 1;
		cout << "2\n";
	}
	for(int i=2;i<=a;i++){
		prime = i;
		for(int j=1;j<=sqrt(i);j++){
			if(i%(j+1)==0){
				prime = 0;
				break;
			}
		}
		switch(prime){
			case 0:
				break;
			default:
				cout << prime << endl;
		}
	}
}