Submission

Score: 100

User: zenta4u

Problemset: จำนวนเฉพาะก่อนหน้า

Language: cpp

Time: 0.003 second

Submitted On: 2025-10-01 11:15:59

// Online C++ compiler to run C++ program online
#include <bits/stdc++.h>
using namespace std;
int main() {
    int x,times=0,a;
    set<int> y;
    cin>>x;
    for(int i=x-1;i>0;i--){
        a=0;
        if(times==5){
            break;
        }
        if(i%2==0){
            continue;
        }
        for(int j=2;j*j<=i;j++){
            if(i%j==0){
                a++;
                break;
            }
        }
        if(a==0){
            y.insert(i);
            times++;
     }
}
for(int i:y){
    cout<<i<<" ";
}
}