牛客_钓鱼比赛

钓鱼比赛
https://www.nowcoder.com/practice/cac8bc877bbd444c8999d7fd77e5dd89

import java.util.Scanner;

public class Main {
    public static void main(String[] args){
        Scanner in = new Scanner(System.in);

        while(in.hasNext()){
            solution(in);
        }
    }

    /**
     * 数学法: 概率
     * 注意按行读取数据!
     * @param in
     */
    private static void solution(Scanner in){
        String[] line = in.nextLine().split(" ");
        int n = Integer.parseInt(line[0]);
        int m = Integer.parseInt(line[1]);
        int x = Integer.parseInt(line[2]);
        int y = Integer.parseInt(line[3]);
        int t = Integer.parseInt(line[4]);

        double[][] fishPond = new double[n+1][m+1];
        double pSum = 0;
        for(int i=1; i<=n; i++){
            String[] probability = in.nextLine().split(" ");
            for(int j=1; j<=m; j++){
                fishPond[i][j] = Double.parseDouble(probability[j-1]);
                pSum += fishPond[i][j];
            }
        }

        // cc
        double p1 = fishPond[x][y];
        // ss
        double p2 = pSum/(n*m);

        String winner;
        double p;
        if(p1 > p2){
            winner = "cc";
            p = 1-Math.pow((1-p1),t);
        }else if(p1 == p2){
            winner = "equal";
            p = 1-Math.pow((1-p1),t);
        }else{
            winner = "ss";
            p = 1-Math.pow((1-p2),t);
        }

        System.out.println(winner);
        System.out.printf("%.2f%n",p);
    }
}