from sys import stdin
import math
k,a,b = list(map(int, stdin.readline().rstrip().split(' ')))
str = stdin.readline().rstrip()
if k*a > len(str):
print('No solution')
exit()
if k > len(str):
print('No solution')
exit()
if k*b < len(str):
print('No solution')
exit()
with_even_lines = k * a
after_even_lines = len(str) - with_even_lines
l = 0
for _ in range(k):
line_size = a
if after_even_lines > 0:
line_size += after_even_lines
line_size = min(b, line_size)
after_even_lines -= (line_size - a)
print(str[l:l+line_size])
l += line_size#include<bits/stdc++.h>
using namespace std;
int k,a,b,l,r;
string s;
int main()
{
cin>>k>>a>>b>>s;
if(s.size()<(k*a) || s.size()>(k*b))
return cout<<"No solution",0;
for(;k>0;k--)
{
r=(s.size()-l)/k;
cout<<s.substr(l,r)<<endl;
l+=r;
}
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