2.4.3.cpp

#include <iostream>
using namespace std;

int main(){
    // Code for input output
    #ifndef ONLINE_JUDGE
        freopen("input.txt", "r", stdin);
        freopen("output.txt", "w", stdout);
    #endif

    // Do While Loop Example
    
    int n;

    do{
        cin>>n;
        cout<<n<<endl;
    }while(n > 0);


    return 0;
}