#include <iostream>
 
using namespace std;
 
int x[100],st[100],n;
 
bool sol(int pas)
{
    return st[pas]==n;
}
 
void afis (int pas)
{
    int i;
    for (i=1;i<=pas;i++)
        cout << st[i];
    cout << endl;
}
 
void BKT(int pas)
{
    int i;
    for (i=1;i<=x[pas];i++)
    {
        st[pas]=i;
        if (sol(pas))afis(pas);
        else BKT(pas+1);
    }
}
 
int main()
{
    n=3;
    int i;
    for (i=1;i<=n;i++)cin >>x[i];
    BKT(1);
    return 0;
}
 

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