Some line code explanation

[Chrilo06]

Hello I am new to python and I still get confused in some parts. I have this code that I want to understand. I can understand most of it but I get confused on lines 6 up to 11.

winningSet =  (10, 11, 8, 1, 5, 20)

numberInput=tuple(input().split())
d = {}
winningPrize = 0
f = 1

if(len(numberInput) == 7):
    for i in range(1,7):
        if int(numberInput[i]) in d:
            f = 0
            break
        else:
            d[int(numberInput[i])] = 1
        if(int(numberInput[i]) in winningSet):
            winningPrize += 100
    if f:
        if winningPrize != 0:
            print(numberInput[0],"won", winningPrize ,"pesos!")
        else:
            print(numberInput[0],"won nothing!")
    else:
        print("No Duplicates")
else:
    print("Should be 6 numbers")