triangles.rb

def equilateral(a,b,c)
	if(((a-b)+(b-c)+(a-c))==0)
		return true
	end
	return false
end

def isoceles(a,b,c)
	if(((a-b)+(b-c))==0 or ((a-b)+(a-c))==0)
		return true
	end
	return false
end

def scalen(a,b,c)
	if(a!=b and b!=c and a!=c)
		return true
	end
	return false
end


counter = ARGV[0].to_i
starter = 0

if ((counter>0) and (counter<501))
	counter.times do
		a = ARGV[starter+1].to_i
		b = ARGV[starter+2].to_i
		c = ARGV[starter+3].to_i
		if equilateral(a,b,c) == true
			puts 'Equilateral'
		end
		if isoceles(a,b,c) == true
			puts 'Isoceles'	
		end
		if scalen(a,b,c) == true
			puts 'Scalen'
		end
		starter += 3
	end
else
	puts 'Error'
end

# ruby triangles.rb 3 10 10 10 12 12 11 4 2 1
# Output: 
#Equilateral
#Isosceles
#Scalene

# ruby triangles.rb 6000 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 
#Output:
#Error