Ah!

Interview

Time limit1sMemory limit128 MB

Summary

Compare two strings of the form a...ah and print go if the first has at least as many a characters as the second.

Level: Easy2 of 10
Topics: String, Implementation
Solved: No attempts yet

Problem

Jaehwan shouted so much at a concert that he got a sore throat.

The doctor asks Jaehwan to say "ah". This sound is written as some number of a characters followed by a single h (for example, aaah). Unfortunately, Jaehwan sometimes cannot hold the sound for as long as the doctor wants.

Each doctor asks for a sound of a specific length. Some ask for something long like aaaaaah, while others ask only for h.

A doctor can make a diagnosis only after hearing a sound of the length they requested.

Jaehwan knows the longest sound he can make, and he wants to visit only a doctor whose request he can meet.

Given the sound Jaehwan can make and the sound the doctor requests, write a program that decides whether Jaehwan should go to that clinic.

Input

The input consists of two lines.

Line 1: the longest sound Jaehwan can make.
Line 2: the sound the doctor wants to hear.

Both strings consist only of the lowercase letters a and h. In each string the number of a characters is between 0 and 999 inclusive, and there is always exactly one h at the very end.

Output

Print go if Jaehwan should go to the clinic, otherwise print no.

Jaehwan can go to the clinic only if the number of a characters in the sound he can make is greater than or equal to the number of a characters the doctor requests.

Examples4

Example 1
Input
```
aaah
aaaaah
```
Expected output
```
no
```
Example 2
Input
```
aaah
ah
```
Expected output
```
go
```
Example 3
Input
```
aaah
aaah
```
Expected output
```
go
```
Example 4
Input
```
aaah
h
```
Expected output
```
go
```