codeforces 612 A. The Text Splitting

 1/* ***********************************************
 2Author :111qqz
 3Created Time :2015年12月25日 星期五 22时58分26秒
 4File Name :code/cf/edu4/A.cpp
 5************************************************ */
 6
 7#include <cstdio>
 8#include <cstring>
 9#include <iostream>
10#include <algorithm>
11#include <vector>
12#include <queue>
13#include <set>
14#include <map>
15#include <string>
16#include <cmath>
17#include <cstdlib>
18#include <ctime>
19#define fst first
20#define sec second
21#define lson l,m,rt<<1
22#define rson m+1,r,rt<<1|1
23#define ms(a,x) memset(a,x,sizeof(a))
24typedef long long LL;
25#define pi pair < int ,int >
26#define MP make_pair
27
28using namespace std;
29const double eps = 1E-8;
30const int dx4[4]={1,0,0,-1};
31const int dy4[4]={0,-1,1,0};
32const int inf = 0x3f3f3f3f;
33const int N=105;
34int n,p,q;
35char st[N];
36bool v[10005];
37int main()
38{
39	#ifndef  ONLINE_JUDGE 
40	freopen("code/in.txt","r",stdin);
41  #endif
42	cin>>n>>p>>q;
43	cin>>st;
44	ms(v,false);
45	int b,c;
46	for ( int i = 0 ; i*p<=105 ; i++ )
47	{
48	    for ( int j = 0 ; j*q <= 105 ; j++)
49	    {
50		v[i*p+j*q] = true;
51		if (i*p+j*q==n)
52		{
53		    b = i;
54		    c = j;
55		}
56	    }
57	}
58//	cout<<"b:"<<b<<endl;
59//	cout<<"c:"<<c<<endl;
60	if (!v[n])
61	{
62	    puts("-1");
63	}
64	else
65	{
66	    int cnt = 0 ;
67	    printf("%d\n",b+c);
68	    for ( int i = 1 ; i <=  b ; i++)
69	    {
70		for ( int i = 0 ; i < p ; i++)
71		    printf("%c",st[cnt]),cnt++;
72		printf("\n");
73	    }
74	    for ( int i =1 ; i <= c ; i++)
75	    {
76		for ( int i = 0 ; i < q ; i++)
77		    printf("%c",st[cnt]),cnt++;
78		printf("\n");
79	    }
80	}
81
82
83
84  #ifndef ONLINE_JUDGE  
85  fclose(stdin);
86  #endif
87    return 0;
88}