#include <stdio.h>
#include <string>
#include <iostream>using namespace std;int main()
{
// freopen("acm.acm","r",stdin);
// freopen("out.acm","w",stdout); string s;
int len;
int i;
int index;
while(cin>>s)
{
index = ;
len = s.length();
for(i = len - ; i >= ; -- i)
{
if(s[i] >= 'p' && s[i] <= 'z')
{
++ index;
}
else if(s[i] == 'C' || s[i] == 'D' || s[i] == 'E' || s[i] == 'I')
{
if(index >= )
{
-- index;
}
else
{
index = ;
break;
}
}
else if(s[i] == 'N')
{
if(index == )
{
break;
}
}
else
{
index = ;
break;
}
}
if(index == )
{
cout<<"YES"<<endl;
}
else
{
cout<<"NO"<<endl;
}
}
return ;
}
关注我的公众号,当然,如果你对Java, Scala, Python等技术经验,以及编程日记,感兴趣的话。
技术网站地址: vmfor.com