no.cpp

#include <iostream>
#include <fstream>

using namespace std;

int N, K, z = 0;

int main() {
	freopen("word.in", "r", stdin);
	freopen("word.out", "w", stdout);
	ios::sync_with_stdio(0);
	cin.tie(NULL);
	cin >> N >> K;
	N = N - 1;
	while(N) {
		string word; cin >> word;
		z += (int) word.size();
		if(z <= K) {
			cout << word << " ";
			continue;
		}
		z = (int) word.size();
		cout << "\n" << word << " ";
	}
	return 0;
}