AFunc2

def SumAl(n):
    lst = [0]*n
    for i in range(0, len(lst)):
        lst.append(i*2+1)
    return sum(lst[n:])
n1 = int(input())
n2 = int(input())
n3 = int(input())
print(SumAl(n1))
print(SumAl(n2))
print(SumAl(n3))
'''
## // простой вывод арифметич прогрессии
var (n,sum) := (readinteger,0);
var mass := new integer[n];
for var i := 0 to mass.Length-1 do
  begin
    mass[i] := i*2 + 1;
    sum += mass[i];
  end;
println(mass);
println(sum);
'''