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//https://www.nowcoder.com/practice/dbace3a5b3c4480e86ee3277f3fe1e85?tpId=37&&tqId=21299&rp=1&ru=/ta/huawei&qru=/ta/huawei/question-ranking

import java.util.Scanner;public class Main4 {	public static void main(String[] args) {		Scanner sc = new Scanner(System.in);		while (sc.hasNext()) {			int number = sc.nextInt();			int sum = number * number * number;			int start = number * (number - 1) + 1;			int[] array = new int[number];			for (int i = 0; i < array.length; i++) {				array[i] = start;				start += 2;			}			for (int i = 0; i < array.length; i++) {				if (i < array.length - 1)					System.out.print(array[i] + "+");				else {					System.out.println(array[i]);				}			}		}	}}

//https://www.nowcoder.com/practice/22fdeb9610ef426f9505e3ab60164c93?tpId=37&tags=&title=&diffculty=0&judgeStatus=0&rp=1

import java.util.Scanner;public class Main5 {	public static void main(String[] args) {		Scanner sc = new Scanner(System.in);		while (sc.hasNext()) {			String str1 = sc.next();			String str2 = sc.next();			int res = 0;			char[] c = str1.toCharArray();			for (int i = 0; i < c.length; i++) {				c[i] = str1.charAt(i);			}			for (int i = 0; i < c.length; i++) {				res = str2.indexOf(c[i]);				if (res == -1) {					break;				}			}			if (res == -1) {				System.out.println("false");			} else {				System.out.println("true");			}		}	}}

//https://www.nowcoder.com/practice/a30bbc1a0aca4c27b86dd88868de4a4a?tpId=37&&tqId=21269&rp=1&ru=/ta/huawei&qru=/ta/huawei/question-ranking

import java.util.Scanner;public class Main6 {	public static void main(String[] args) {		Scanner sc = new Scanner(System.in);		while(sc.hasNext()) {			String str1 = sc.next();			int k = sc.nextInt();			char[]c=str1.toCharArray();			for(int i=0;i

//https://www.nowcoder.com/practice/7a0da8fc483247ff8800059e12d7caf1?tpId=13&&tqId=11200&rp=1&ru=/ta/coding-interviews&qru=/ta/coding-interviews/question-ranking

import java.util.Scanner;public class Main7 {	public static void main(String[] args) {		Scanner sc = new Scanner(System.in);		int n = sc.nextInt();		System.out.println(Sum_Solution(n));	}		    public static int Sum_Solution(int n) {	        if(n>=1){	            return n+Sum_Solution(n-1);	        }	        else	            return 0;	        	    }	}

//https://www.nowcoder.com/practice/7960b5038a2142a18e27e4c733855dac?tpId=37&&tqId=21244&rp=1&ru=/ta/huawei&qru=/ta/huawei/question-ranking

import java.util.Scanner;public class Main8 {	public static void main(String[] args) {		Scanner sc = new Scanner(System.in);		StringBuilder sb = new StringBuilder();		while (sc.hasNext()) {			String key = sc.next();			for(int i=0;i
   
    ='A'&&c<'Z') {					c = (char)(c+'b'-'A');				}				else if(c=='Z') {					c='a';				}				else if (c>='a' && c<='c') {                    c = '2';                } else if (c>='d' && c<='f') {                    c = '3';                } else if (c>='g' && c<='i') {                    c = '4';                } else if (c>='j' && c<='l') {                    c = '5';                } else if (c>='m' && c<='o') {                    c = '6';                } else if (c>='p' && c<='s') {                    c = '7';                } else if (c>='t' && c<='v') {                    c = '8';                } else if (c>='w' && c<='z') {                    c = '9';                }				sb.append(c);			}			System.out.println(sb.toString().trim());								}	}}
   

//https://www.nowcoder.com/practice/eb94f6a5b2ba49c6ac72d40b5ce95f50?tpId=37&tags=&title=&diffculty=0&judgeStatus=0&rp=1

import java.util.HashSet;import java.util.Scanner;import java.util.Set;public class Main0 {	public static void main(String[] args) {		Scanner sc = new Scanner(System.in);		String str = sc.next();		HashSet
   
     hashSet = new HashSet<>();//建立HashSet对象，将字符存储，去掉重复		char[] c = str.toCharArray();//将字符串转换为字符数组,获取每一个字符存储在HashSet集合中,自动去除重复		for(char kk : c) {//遍历数组，去重			if(kk>0&&kk<127) {				hashSet.add(kk);			}		}		System.out.println(hashSet.size());			}}
   

//https://www.nowcoder.com/practice/ba241b85371c409ea01ac0aa1a8d957b?tpId=37&&tqId=21278&rp=1&ru=/ta/huawei&qru=/ta/huawei/question-ranking

import java.util.Scanner;public class Main1 {	public static void main(String[] args) {		Scanner sc = new Scanner(System.in);		while(sc.hasNext()) {		int x = sc.nextInt();		System.out.println(selsetSeven(x));		}	}public static int selsetSeven(int x){		int res = 0;		for(int i=7;i<=x;i++) {			if(i%7==0||String.valueOf(i).contains("7")) {//String方法判断是否含有7这个数字				res++;			}		}		return res;	}}

//https://www.nowcoder.com/practice/253986e66d114d378ae8de2e6c4577c1?tpId=37&&tqId=21232&rp=1&ru=/ta/huawei&qru=/ta/huawei/question-ranking

import java.util.HashSet;import java.util.Scanner;import java.util.Set;public class Main2 {	public static void main(String[] args) {		Scanner sc = new Scanner(System.in);		int number = sc.nextInt();		String str = String.valueOf(number);		char[] c = str.toCharArray();		for(int i=0;i

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