[Water]Hdu 5284 wyh2000 and a string problem

#include <cstdio>
#include <cstring>
using namespace std;

const int MAXN=10000000+5;
char a[MAXN];
int t;

char b[3]={'w','y','h'};
int main()
{
	scanf("%d",&t);
	getchar();
	while(t--){
		
		gets(a);
		for(int i=0;a[i+1];++i)if(a[i]=='v'&&a[i+1]=='v')a[i]='w';

		int i=0,j=0;
		while(i<len){
			if(a[i]==b[j]){
				j++;
			}
			if(j==3)break;
			i++;
		}
		if(j==3)printf("Yes
");
		else printf("No
");
	}
	
}