#include <iostream>
#include <sstream>
#include <vector>
#include <cctype>
 
struct spell {
    std::string name;
    std::string effect;
    spell(std::string str) {
        std::istringstream strm(str);
        strm >> name >> effect;
    }
};
 
struct spellbook {
    std::string title;
    std::string author;
    int pages;
    std::vector<spell> spells; // vector for nicer code and a cleaner name
    spellbook(std::string str) {
        std::istringstream strm(str);
        strm >> title >> author >> pages;
    }
};
 
bool is_book(std::string str) {
    return isdigit(str.back());
}
 
int main() {
    std::vector<spellbook> books;
    // ifstream fhand("Some/File/Location.txt");
    std::string line;
    while(std::getline(std::cin, line)) {
        if(is_book(line)) {
            books.push_back(spellbook(line));
        } else {
            books.back().spells.push_back(spell(line));
        }
    }
 
    for(auto book : books) {
    	std::cout << book.title << ", by: " << book.author << std::endl;
    	std::cout << "Contains..." << std::endl;
    	for(auto sp : book.spells) {
    		std::cout << "\t" << sp.name << ": " << sp.effect << std::endl;
    	}
    	std::cout << std::endl;
    }
}

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Dark_Secrets Grady 357
Evil_Force Dark
Grimoire Thompson 1967
Heavenly_Glow Light
Water_Ray Water