import keyboard
print("Matrix Calculator. ver 1.0")
print()
while True:
    print("What the type of matrix? Second, third or fourth order? [2/3/4]")
    type = [2,3.4]
    a = input()
    for type in a:
        if type == "2":
            print("This matrix has the following form:")
            print()
            print("|A|=|a11 a12|")
            print("    |a21 a22|")
            print()
            print("Enter the required matrix numbers")
            a11 = input("a11: ")
            a12 = input("a12: ")
            a21 = input("a21: ")
            a22 = input("a22: ")
            result = int(a11) * int(a22) - int(a12) * int(a21)
            print("Result:", result)
            break
        if a == "3":
            print("This matrix has the following form:")
            print()
            print("    |a11 a12 a13|")
            print("|A|=|a21 a22 a23|")
            print("    |a31 a32 a33|")
            print()
            print("Enter the required matrix numbers")
            a11 = input("a11: ")
            a12 = input("a12: ")
            a13 = input("a13: ")
            a21 = input("a21: ")
            a22 = input("a22: ")
            a23 = input("a23: ")
            a31 = input("a31: ")
            a32 = input("a32: ")
            a33 = input("a33: ")
            plus = int(a11) * int(a22) * int(a33) + int(a21) * int(a32) * int(a13) + int(a12) * int(a23) * int(a31)
            minus = int(a13) * int(a22) * int(a31) + int(a21) * int(a12) * int(a33) + int(a32) * int(a23) * int(a11)
            result = plus - minus
            print("Result:", result)
            break
        if a == "4":
            print("This matrix has the following form:")
            print()
            print("    |a11 a12 a13 a14|")
            print("|A|=|a21 a22 a23 a24|")
            print("    |a31 a32 a33 a34|")
            print("    |a41 a42 a43 a44|")
            print()
            print("Enter the required matrix numbers")
            a11 = int(input("a11: "))
            a12 = int(input("a12: "))
            a13 = int(input("a13: "))
            a14 = int(input("a14: "))
            a21 = int(input("a21: "))
            a22 = int(input("a22: "))
            a23 = int(input("a23: "))
            a24 = int(input("a24: "))
            a31 = int(input("a31: "))
            a32 = int(input("a32: "))
            a33 = int(input("a33: "))
            a34 = int(input("a34: "))
            a41 = int(input("a41: "))
            a42 = int(input("a42: "))
            a43 = int(input("a43: "))
            a44 = int(input("a44: "))
            print("Form of this matrix:")
            print()
            print("|A|=|",a11, a12, a13, a14,"|")
            print("    |",a21, a22, a23, a24,"|")
            print("    |",a31, a32, a33, a34,"|")
            print("    |",a41, a42, a43, a44,"|")
            print()
            answer = input("Continue? [y/n] ")
            if answer == "y":
                print("Form of this expression:")
                print(a11,"|=|",a22, a23, a24,"|-",a12,"|=|",a21, a23, a24,"|+",a13,"|=|",a21, a22, a24,"|-",a14,"|",a21, a22, a23,"|")
                print(a11,"|=|",a32, a33, a34,"|-",a12,"|=|",a31, a33, a34,"|+",a13,"|=|",a31, a32, a34,"|-",a14,"|",a31, a32, a33,"|")
                print(a11,"|=|",a42, a43, a44,"|-",a12,"|=|",a41, a43, a44,"|+",a13,"|=|",a41, a42, a44,"|-",a14,"|",a41, a42, a43,"|")
                result1 = int(a22) * int(a33) * int(a44) + int(a32) * int(a43) * int(a24) + int(a23) * int(a34) * int(a42) - int(a24) * int(a33) * int(a42) - int(a23) * int(a32) * int(a44) - int(a43) * int(a34) * int(a22)
                result2 = int(a21) * int(a33) * int(a44) + int(a41) * int(a23) * int(a34) + int(a31) * int(a43) * int(a24) - int(a24) * int(a33) * int(a41) - int(a34) * int(a43) * int(a21) - int(a31) * int(a23) * int(a44)
                result3 = int(a21) * int(a32) * int(a44) + int(a31) * int(a42) * int(a24) + int(a22) * int(a34) * int(a41) - int(a24) * int(a32) * int(a41) - int(a34) * int(a42) * int(a21) - int(a31) * int(a22) * int(a44)
                result4 = int(a21) * int(a32) * int(a43) + int(a31) * int(a42) * int(a23) + int(a22) * int(a33) * int(a41) - int(a23) * int(a32) * int(a41) - int(a33) * int(a42) * int(a21) - int(a31) * int(a22) * int(a43)
                print("Result 1:",result1)
                print("Result 2:",result2)
                print("Result 3:",result3)
                print("Result 4:",result4)
                result = int(a11) * int(result1) - int(a12) * int(result2) + int(a13) * int(result3) - int(a14) * int(result4)
                print("Final result:", result)
                break
            if answer == "n":
                break
    key = input("Process ended. Do you want to take different actions with numbers? [y/n] ")
    if key == "n":
        break
    if key == "y":
        print()
    else:
        print("Incorrect input")
        break
input("Press Enter to exit . . . ")