n1 = int(input()) n2 = int(input()) n3 = int(input()) i = 1 a = 0 while i <= n1: a += i i += 1 print(a) i = 1 a = 0 while i <= n2: a += i i += 1 print(a) i = 1 a = 0 while i <= n3: a += i i += 1 print(a)