Hacking Cipher

#include<bits/stdc++.h>
#include<iostream>
#include<cstdio>
using namespace std;
#define ll long long
ll StringtoNumber(char c)
{
    return c-'0';
}
int main()
{
    string str;
    char String[1001000];
    scanf("%s",String);
    ll a,b;
    scanf("%lld %lld",&a,&b);
    str=String;
//   cout<<a<<" "<<b<<endl;
    ll num=0;
    int cnt=0;
    bool flag=false;
    vector<int>v;
    while(true)
    {
        while(num<a)
        {   if(cnt==str.length())
            {
                flag=true;
                break;
            }
            ll x=StringtoNumber(str[cnt]);
            num=num*10+x;
        //    cout<<num<<endl;
            cnt++;
         //   cout<<cnt<<" "<<num<<endl;
        }
        if(num%a==0)
        {
//            cout<<num<<" "<<str[cnt]<<endl;
            if(str[cnt]=='0')
            {
            while(str[cnt]=='0')
            {
                if(cnt==str.length())
                    break;
                cnt++;
            }
       //     cout<<cnt<<endl;
            }
//            cout<<cnt<<endl;
            v.push_back(cnt);
            num=0;
        }
        else
        {
            num=num%a;
        }
        if(flag==true || cnt==str.length())
        {
            break;
        }
    }

    num=0;
    int bal=0;
    for(int i=0;i<v.size();i++)
    {
        if(v[i]==str.length())
        {
            bal++;
        }
    }
    if(bal==v.size())
    {
        cout<<"NO"<<endl;
        return 0;
    }
    int flg=0;
    for(int i=0;i<v.size();i++)
    {

        int pos=v[i];
    while(pos<str.length())
    {
        // cout<<num<<endl;
        ll x=StringtoNumber(str[pos]);
        num=num*10+x;
        if(num>=b)
        {
        num=num%b;
        }
        pos++;
    }
    if(num==0)
    {   flg=1;
        cout<<"YES"<<endl;
        //cout<<"mara kha"<<endl;
        for(int j=0;j<v[i];j++)
        {
            cout<<str[j];
        }
        //cout<<"asdas"<<endl;
        cout<<endl;
        for(int j=v[i];j<str.length();j++)
        {
            cout<<str[j];
        }
        cout<<endl;
        break;
        return 0;
    }
    }
    if(flg==0)
    {
        cout<<"NO"<<endl;
    }
    return 0;
}