import math

def main():

    global a
    global b
    global c

    a = float(input("Intorduceti a: "))
    b = float(input("Intorduceti b: "))
    c = float(input("Intorduceti c "))

    return a,b,c

def ecuate_grad_doi(a,b,c):

    if a == 0:
        print("Ecutia introdusa nu este de gradul doi")
    else:
          delta = b**2 - 4*a*c
          if delta <0:
             print("Ecautia nu are sulutii reale")
          else:
                if delta == 0:
                    solutie=(-b)/(2*a)
                    print("Ecutia are solutie unice: x= ", solutie)
                else:
                    sqrt_delta = math.sqrt(delta)
                    solutie1 = (-b - sqrt_delta)/(2*a)
                    sulutie2 =(-b+sqrt_delta)/(2*a)
                    print("Ecutia are solutii: ")
                    print("x1 = ", solutie1)
                    print("x2 =", sulutie2)

main()
ecuate_grad_doi(a,b,c)