101640: [AtCoder]ABC164 A - Sheep and Wolves
Memory Limit:256 MB
Time Limit:2 S
Judge Style:Text Compare
Creator:
Submit:0
Solved:0
Description
Score : $100$ points
Problem Statement
There are $S$ sheep and $W$ wolves.
If the number of wolves is greater than or equal to that of sheep, the wolves will attack the sheep.
If the wolves will attack the sheep, print unsafe
; otherwise, print safe
.
Constraints
- $1 \leq S \leq 100$
- $1 \leq W \leq 100$
Input
Input is given from Standard Input in the following format:
$S$ $W$
Output
If the wolves will attack the sheep, print unsafe
; otherwise, print safe
.
Sample Input 1
4 5
Sample Output 1
unsafe
There are four sheep and five wolves. The number of wolves is not less than that of sheep, so they will attack them.
Sample Input 2
100 2
Sample Output 2
safe
Many a sheep drive away two wolves.
Sample Input 3
10 10
Sample Output 3
unsafe