01. Format Lines

#include <iostream>
#include <sstream>
#include <string>
#include <list>

using namespace std;

int main() {
    string line, word;
    getline(cin, line);

    list<string> words;

    while (line != "###") {
        istringstream ss(line);
        while (ss >> word) {
            words.push_back(word);
        }
        getline(cin, line);
    }

    int rowLength;
    cin >> rowLength;

    string outputLine = "";

    for (auto& w : words) {
        if (outputLine.length() + w.length() <= rowLength) {
            outputLine += w + ' ';
        }
        else {
            cout << outputLine.substr(0, outputLine.size() - 1) << endl;
            outputLine = w + ' ';
        }
    }

    cout << outputLine << endl;
    return 0;
}