A. Sum of Round Numbers

#include<iostream>
#include<string>
#include <sstream>
#include <vector>
#include <cmath>
using namespace std;

int main()
{
    int a,b;
    cin>>a;
    for(int i=1;i<=a;i++){
        int c=0,k;
        cin>>b;
        ostringstream ss;
        ss<<b;
        string g=ss.str();
        vector <int> v;
        for(int j=g.size()-1;j>=0;j--){
            if(g[j]=='0'){
                c++;
            }
            else{
                k=pow(10,c)+0.5;
                string p(1, g[j]);
                stringstream ee(p);
                int x=0;
                ee>>x;
                k=k*x;
                v.push_back(k);
                c++;
            }
        }
        cout<<v.size()<<endl;
        for(int j=0;j<v.size();j++){
            if(j==v.size()-1){
                cout<<v[j]<<endl;
            }
            else{
                cout<<v[j]<<" ";
            }
        }

    }

}