#include <iostream>
#include <vector>
#include <algorithm>
#include <string>

using namespace std;

struct Book
{
    string name;
    int pages;
};

int main()
{
    std::vector<Book> books = {
        {"The Great Adventure", 320}, 
        {"Mysteries of the Deep", 250}, 
        {"Echoes of the Past", 310},
        {"Whispers in the Wind", 230}, 
        {"Journey to the Unknown", 293}, 
    };

    auto it = remove_if(books.begin(), books.end(),
                        [](Book const& book){
                            return book.pages > 293;
                        });
    books.erase(it, books.end());

    for (Book const& book : books)
    {
	cout << book.name << ": " << book.pages << endl;
    }
}