#include <iostream>
#include <cstdlib>
#include <ctime>
void draw_once() {
    int r = std::rand() % 111;
    if (r < 50) std::cout << "R\n";
    else if (r < 80) std::cout << "SR\n";
    else if (r < 100) std::cout << "SSR\n";
    else if (r < 105) std::cout << "UR\n";
    else if (r < 109) std::cout << "TR\n";
    else std::cout << "USR\n";
}
int main() {
    int coins = 0;
    std::srand(std::time(nullptr));
    while (true) {
    flag:
        std::cout << "现在有：" << coins << "金币" << "\n";
    std::cout << "\n===== 抽卡小游戏 =====\n";
        std::cout << "1 抽一次\n";
        std::cout << "2 说明\n";
        std::cout << "3 增加金币\n";
        std::cout << "4 稀有度查看\n";
        std::cout << "0 退出\n";
        std::cout << "请选择："; 
        int choice = 0;
        std::cin >> choice;
        if (choice == 1){
        std::cout << "抽几次？（最大100）" << "\n";
        int n = 0;
        std::cin >> n;
        if (coins < n*10){
            std::cout << "金币不足，请增加金币,或者减少遍数" << "\n";
            std::cout << "将跳转到菜单，请按回车" << "\n";
            std::cin.ignore();
            std::cin.get();
            continue;
        }
        for ( int i =1; (i <= n && i <= 100 && n<=100 ); i++)
        {
            
            std::cout << "第" << i << "抽";
            draw_once();
            coins -= 10;
        }
        }
        if (choice == 2){
            std::cout << "说明：这是一个抽卡游戏，你可以通过抽卡来获得各种等级的卡牌。\n"
            "有普通稀有传说，并且还可以查看稀有度分配，每抽一次花费10金币。\n"
            "若金币不够，可以去菜单增加金币，或者减少抽卡遍数。并且抽卡遍数最高100。\n";
            std::cout << "将跳转到菜单，请按回车" << "\n";
            std::cin.ignore();
            std::cin.get();
            continue;
            break;
        }
        if (choice == 3){
            std::cout << "请输入增加金币的数量（最大10000）"  << "\n";
            int add = 0;
            std::cin >> add;
            coins += add;
            std::cout << "增加成功，现在有：" << coins << "金币" << "\n";
            std::cout << "将跳转到菜单，请按回车" << "\n";
            std::cin.ignore();
            std::cin.get();
            continue;
            break;
        } if (choice == 4){
            std::cout <<"R：45.05%  SR：27.03%  SSR：18.02%  UR：4.50%  TR：3.60%  USA：1.80%\n";
            std::cout << "将跳转到菜单，请按回车" << "\n";
            std::cin.ignore();
            std::cin.get();
            continue;
            break;
        }
        if (choice == 0){
            choice:
            std::cout << "你确定吗？（确定选0 返回菜单选1）" << "\n";
            int confirm = 0;
            std::cin >> confirm;
            if (confirm == 0){
                goto end;
            }
            else if (confirm == 1){
                goto flag;
            }
            else{
                std::cout << "输入错误，请重新输入。"  << "\n";
                goto choice;
            }
        }
        
        std::cout << "将跳转到菜单，请按回车" << "\n";
            std::cin.ignore();
            std::cin.get();
            continue;
    }
    end:
    return 0;
}