084 - Problems

084

Time limit 1 second

Memory limit 64 MiB

Input example #1

7 7 7

Output example #1

equilateral

Input example #2

9 9 3

Output example #2

isosceles

Input example #3

2 3 4

Output example #3

versatile

Input example #4

2 3 5

Output example #4

invalid

Input example #8

555 222 222

Output example #8

invalid