UVa 489 - Hangman Judge

// UVa 489 - Hangman Judge

#include <iostream>
#include <set>
#include <string>
using namespace std;

int main() {

	int round;
	while (cin >> round && round != -1) {
		string word;
		cin >> word;

		set<char> leftToGuess, hiddenWord, previousGuesses;
		for (int i = 0; i < word.length(); i++) {
			leftToGuess.insert(word[i]);
			hiddenWord.insert(word[i]);
		}

		cin >> word;
		int wrongLeft = 7;
		for (int i = 0; i < word.length(); i++) {

			bool wrongGuess = hiddenWord.find(word[i]) == hiddenWord.end() && previousGuesses.find(word[i]) == previousGuesses.end();


			if (wrongGuess) {
				wrongLeft--;
				if (wrongLeft == 0)
					break;
			}

			previousGuesses.insert(word[i]);
			leftToGuess.erase(word[i]);
			if (leftToGuess.empty())
				break;
		}

		cout << "Round " << round << endl;
		if (wrongLeft == 0)
			cout << "You lose." << endl;
		else if (leftToGuess.empty())
			cout << "You win." << endl;
		else
			cout << "You chickened out." << endl;

	}

	return 0;
}