Leetcode

学acm的第一个专题，好怀念
改了半天没过，一看题解爆int，气晕

import java.util.Scanner;

// 一个游戏实际的价格是b - (a - b) = 2 * b - a
class Game {
    Integer cost;
    Integer value;

    public Game(Integer cost, Integer value) {
        this.cost = cost;
        this.value = value;
    }
}

class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = scanner.nextInt();
        int x = scanner.nextInt();
        Game[] games = new Game[n + 1];
        long extra = 0;
        int gameIndex = 0;
        for (int i = 0; i < n; i++) {
            int a = scanner.nextInt();
            int b = scanner.nextInt();
            int w = scanner.nextInt();
            // 如果游戏不要钱，就直接买啦
            if (2 * b - a <= 0) {
                extra += w;
                x += a - 2 * b;
            } else {
                games[++gameIndex] = new Game(2 * b - a, w);
            }
        }
        long[] dp = new long[x + 1];
        for (int i = 1; i <= gameIndex; i++) {
            for (int j = x; j >= games[i].cost; j--) {
                dp[j] = Math.max(dp[j], dp[j - games[i].cost] + games[i].value);
            }
        }
        System.out.println(dp[x] + extra);
    }
}