Football

题意翻译

# 题目描述 ``` Petya爱死足球了(以至于他天天看)。有一天看比赛时,Petya是如此无聊以至于在纸上写下各个球员的当前位置。为了看起来好看,他把各个球员用“1”与“0”来表示,1与0表示不同球队的人。如果一个队至少有七个人是站在一起的(一个接在一个后面),那么就被认为很危险(所以Petya到底喜欢哪支球队?) 例如,00100110111111101被认为是危险的(因为有7个1连在一起),而11110111011101则不是。现在Petya给了你现在的球队情况,让你判断是否危险。(Petya不能自己判断吗......) ``` # 输入输出格式 ### 输入格式 ``` 仅一行,为一个字符串。由“0”与“1”组成,表示球员。字符串的长度不超过100.每个队至少有一个队员(这不是废话吗) ``` ### 输出格式 ``` 如果危险,输出"YES"(不包括引号),否则输出"NO" ```

题目描述

Petya loves football very much. One day, as he was watching a football match, he was writing the players' current positions on a piece of paper. To simplify the situation he depicted it as a string consisting of zeroes and ones. A zero corresponds to players of one team; a one corresponds to players of another team. If there are at least $ 7 $ players of some team standing one after another, then the situation is considered dangerous. For example, the situation $ 00100110111111101 $ is dangerous and $ 11110111011101 $ is not. You are given the current situation. Determine whether it is dangerous or not.

输入输出格式

输入格式


The first input line contains a non-empty string consisting of characters "0" and "1", which represents players. The length of the string does not exceed $ 100 $ characters. There's at least one player from each team present on the field.

输出格式


Print "YES" if the situation is dangerous. Otherwise, print "NO".

输入输出样例

输入样例 #1

001001

输出样例 #1

NO

输入样例 #2

1000000001

输出样例 #2

YES