import sys
input_values = sys.argv[:]

def what_type_triangle(a,b,c):
	if (a == b) and (b != c) or (b==c) and (a!=b): #ravnobedrenniy treugol
		print 'Triangle with sides: %s %s %s is isosceles' % (a,b,c)
	elif (a==b==c):
		print 'Triangle with sides: %s %s %s is equilateral' % (a,b,c)
	else:                    
		print 'Triangle with sides: %s %s %s is common' % (a,b,c)
	
def is_it_triangle(length_sides):
	length_sides.sort()
	a = length_sides[0]
	b = length_sides[1]
	c = length_sides[2]
	if (a<b+c) and (b<a+c) and (c<a+b) and (a>0) and (b>0) and (c>0):
		print ('Yeah, you have got triangle')
		what_type_triangle(a,b,c)
	else:
		print ('No!')

def make_digits(values):
	nums = []
	for value in values[1:]:	
		try:
                        ret = float(value)
                        nums.append(ret)
		except ValueError: 
			sys.exit('bad data for this side: %s' % value )
										
	print (nums)
    	is_it_triangle(nums)
			
if __name__ == '__main__':
	make_digits(input_values)

def what_type_triangle(a,b,c):
    if (a==b==c):
        print 'Triangle with sides: %s %s %s is equilateral' % (a,b,c)
    elif (a == b) or (b == c) or (a==c): #ravnobedrenniy treugol
        print 'Triangle with sides: %s %s %s is isosceles' % (a,b,c)
    else:                    
        print 'Triangle with sides: %s %s %s is common' % (a,b,c)

import sys
a,b,c = sorted(map(float,sys.argv[1:]))
if a<=0 or a+b<=c:
    msg='плохой'
elif a==c:
    msg="равносторонний"
elif a==b or b==c:
    msg="рвнобедренный"
else:
    msg="общий"
print msg