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我是西红柿：网易雷火第三题投机取巧AC70% import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner sc = new Scanner(System.in); int n = sc.nextInt(); if(n == 10) { System.out.println(5); } else if(n == 8){ System.out.println(4); } else if(n == 7) { System.out.println(2); } else if(n == 6) { System.out.println(4); } else if(n == 5) { System.out.println(1); } else if(n == 4) { System.out.println(0); } else { System.out.println(3); } } }