Gahui and the 4-Hour Wall 1

Interview

Time limit1sMemory limit512 MB

Summary

Given the rail time S and flight time F from station a to station b, decide which mode people take, where flights are chosen only when strictly faster.

Level: Easy1 of 10
Topics: Implementation
Solved: No attempts yet

Problem

The 4-hour wall is the tendency for high speed rail to win on routes where it takes 4 hours or less, and for flights to win otherwise. When people travel from station $a$ to station $b$ , they take a flight if it takes less time than high speed rail. Otherwise, they take high speed rail.

Taking high speed rail from station $a$ to station $b$ takes $S_{ab}$ minutes. Taking a flight from station $a$ to station $b$ takes the sum of the following:

The time to travel from station $a$ to airport $a$
The time to travel from airport $a$ to airport $b$ , which is $F_{ab}$ minutes
The time to travel from airport $b$ to station $b$

Tell which transportation mode people use more when they travel from station $a$ to station $b$ . Travel time between airports and stations is ignored.

Input

The first line contains $S_{ab}$ , as described in the problem.

The second line contains $F_{ab}$ , as described in the problem.

Output

If people use high speed rail more when traveling from station $a$ to station $b$ , print high speed rail. Otherwise, print flight.

Constraints

All travel times are at least $1$ minute and at most $738$ minutes.

Examples2

Example 1
Input
```
80
99
```
Expected output
```
high speed rail
```
Example 2
Input
```
99
98
```
Expected output
```
flight
```