#include<bits/stdc++.h>
using namespace std;
typedef long long int ll;
int main()
{
ll n,p,q;
cin>>n>>p>>q;
string s;
cin>>s;
ll l,r;
bool flag = false;
for(ll i=0;i<=n;i++)
{
for(ll j=0;j<=n;j++)
{
if((i*p)+(j*q)==n)
{
l = i;
r = j;
flag = true;
}
}
}
if(flag)
{
cout<<l+r<<endl;
ll c=0;
for(ll i = 0;i<l;i++)
{
cout<<s.substr(c,p)<<endl;
c = c+p;
}
for(ll i=0;i<r;i++)
{
cout<<s.substr(c,q)<<endl;
c=c+q;
}
}
else
{
cout<<"-1"<<endl;
}
}
1091A - New Year and the Christmas Ornament | 1352B - Same Parity Summands |
1102A - Integer Sequence Dividing | 630B - Moore's Law |
1004A - Sonya and Hotels | 1680B - Robots |
1690A - Print a Pedestal (Codeforces logo) | 1295A - Display The Number |
1077A - Frog Jumping | 1714G - Path Prefixes |
1369C - RationalLee | 289B - Polo the Penguin and Matrix |
1716A - 2-3 Moves | 1670B - Dorms War |
1716B - Permutation Chain | 987A - Infinity Gauntlet |
1676G - White-Black Balanced Subtrees | 1716D - Chip Move |
1352F - Binary String Reconstruction | 1487B - Cat Cycle |
1679C - Rooks Defenders | 56A - Bar |
1694B - Paranoid String | 35A - Shell Game |
1684A - Digit Minimization | 43B - Letter |
1017A - The Rank | 1698B - Rising Sand |
235A - LCM Challenge | 1075B - Taxi drivers and Lyft |