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


template <typename container>
void print(const container& cont) {
    for (const auto& a : cont) {
        std::cout << a;
    }
    std::cout << std::endl;
}

struct student {
    std::string name;
    std::string surname;
    int course;
    int rating;
    double average_score;
};

std::ostream& operator<<(std::ostream& output, const student& student) {
    return output << student.name << " " << student.surname << " " << student.course << " " << student.rating << " " << student.average_score << std::endl;
}

int main() {

    setlocale(LC_ALL, "ru");

    std::vector<student> students{ {"Иван", "Иванов", 1, 33, 3.7 }, { "Владимир", "Владимиров", 3, 39, 3.9 }, { "Геннадий", "Петров", 2, 56, 4.2 }, { "Ольга", "Григорьева", 5, 48, 4.0 }, { "Константин", "Сидоров", 4, 29, 3.5 }, { "Елена", "Гришина", 1, 75, 4.9 } };

    print(students);

    std::sort(students.begin(), students.end(), [](const student & a, const student & b) {return a.surname < b.surname; });

    print(students);

    std::sort(students.begin(), students.end(), [](const student & a, const student & b) {return a.rating > b.rating; });

    print(students);

    std::sort(students.begin(), students.end(), [](const student & a, const student & b) {return a.average_score > b.average_score; });

    print(students);

    auto it = std::remove_if(students.begin(), students.end(), [](const student & a) {return a.course == 5; });

    students.erase(it, students.end());

    //students.erase(std::remove_if(students.begin(), students.end(), [](const student & a) {return a.course == 5; }), students.end());

    print(students);

    std::for_each(students.begin(), students.end(), [](student & a) {a.course++; });

    print(students);

    it = std::max_element(students.begin(), students.end(), [](const student & a, const student & b) {return a.rating < b.rating; });

    std::cout << *it << std::endl;
}