admin管理员组

文章数量:1530275


Vasya has recently learned to type and log on to the Internet. He immediately entered a chat room and decided to say hello to everybody. Vasya typed the word s. It is considered that Vasya managed to say hello if several letters can be deleted from the typed word so that it resulted in the word "hello". For example, if Vasya types the word "ahhellllloou", it will be considered that he said hello, and if he types "hlelo", it will be considered that Vasya got misunderstood and he didn't manage to say hello. Determine whether Vasya managed to say hello by the given words.

Input

The first and only line contains the word s, which Vasya typed. This word consisits of small Latin letters, its length is no less that 1 and no more than 100 letters.

Output

If Vasya managed to say hello, print "YES", otherwise print "NO".

Example
Input 
ahhellllloou
Output 
YES
Input 
hlelo
Output 
NO

               水题，暴力就能过。


#include <stdio.h>
#include <string.h>

int main()
{
	char a[105];
	int i;
	scanf("%s",a);
	int l=strlen(a);
	int y1=0,y2=0,y3=0,y4=0,y5=0;
	int z1,z2,z3,z4;
	for(int i=0;i<l;i++)
	{
		if(a[i]=='h')
		{
			z1=i+1;
			y1=1;
		//	i++;
			break;
		}
	}
	for(int i=z1;i<l;i++)
	{
		if(a[i]=='e')
		{
			z2=i+1;
			y2=1;
		//	i++;
			break;
		}
	}
	for(int i=z2;i<l;i++)
	{
		if(a[i]=='l')
		{
			z3=i+1;
			y3=1;break;
		//	i++;
		}
	}
	for(int i=z3;i<l;i++)
	{
		if(a[i]=='l')
		{
			z4=i+1;
			y4=1;break;
		//	i++;
		}
	}
	for(int i=z4;a[i]!='\0';i++)
	{
		if(a[i]=='o')
		{
			y5=1;break;
		}
	}
	if(y1==1&&y2==1&&y3==1&&y4==1&&y5==1)
	{
		printf("YES\n");
	}
	else
	{
		printf("NO\n");
	}
	return 0;
}


每一个成功的人，都曾经熬过很多那些不为人知的黑夜。




本文标签： RoomChatcodeforces

版权声明：本文标题：Chat room（codeforces-58A） 内容由热心网友自发贡献，该文观点仅代表作者本人， 转载请联系作者并注明出处：https://m.elefans.com/dianzi/1725430630a1022865.html， 本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。如发现本站有涉嫌抄袭侵权/违法违规的内容，一经查实，本站将立刻删除。