codeforces - sum of the round numbers

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define fast()(ios_base::sync_with_stdio(0),cin.tie(NULL));


ll pro(ll i)
{
    switch(i)
    {
    case 0:
        return 1;
        break;
    case 1:
        return 10;
        break;
    case 2:
        return 100;
        break;
    case 3:
        return 1000;
        break;
    case 4:
        return 10000;
        break;
    case 5:
        return 100000;
        break;
    case 6:
        return 1000000;
        break;
    case 7:
        return 10000000;
        break;
    case 8:
        return 100000000;
        break;
    default:
        return 1000000000;
        break;
    }

}
int main()
{
    fast()
    ll t;
    cin>>t;
    while(t--)
    {
        ll n;
        cin>>n;
        vector<ll>v;
        ll i=0;
        while(n>0)
        {
            ll s= n%10;
            if(s>0)
            {
                v.push_back(s*pro(i));
            }
            n/=10;
            i++;
        }
        cout<<v.size()<<endl;
        for(auto x: v)
            cout<<x<<" ";
        cout<<endl;
    }
}