src2020/1662_pailie/main.cpp

#include <iostream>
using namespace std;
int many, big,num[10];
void dg(int now){
    if(now==big+1){
        for(int i=1;i<=big;i++){
            cout<<num[i];
        }
        cout<<endl;
        return;
    }
    for(int i=1;i<=many;i++){
        num[now]=i;
        //cout<<now<<i<<endl;
        dg(now+1);
    }
}
int main()
{
    cin >> many >> big;
    dg(1);
}