def safe_pawns(pawns: set) -> int:

    safe=set()
    for i in pawns:
        #vezi daca apara ceva
        a,b= getDiag(i)
        if a in pawns:
            safe.add(a)
        if b in pawns:
            safe.add(b)

    #print(safe)
    return len(safe)

def getDiag(pawn):

    diag1=None
    diag2=None

    if pawn.endswith('8'):
        #no options
        return diag1, diag2
    elif pawn.startswith('a'):
        # one diag right upper
        diag2="b"+str(int(pawn[1])+1)
        return diag1, diag2
    elif pawn.startswith('h'):
        # one diag left upper
        diag1="g"+str(int(pawn[1])+1)
        return diag1, diag2
    else:
        #somewhere on the board
        diag1=getNextLeter(pawn[0]) + str(int(pawn[1])+1);
        diag2=getPrevLeter(pawn[0]) + str(int(pawn[1])+1);

    return diag1, diag2

def getNextLeter(c):
    i=ord(c);
    i=i+1;

    return chr(i)

def getPrevLeter(c):
    i=ord(c);
    i=i-1;

    return chr(i)


if __name__ == '__main__':

   # safe_pawns({"b4", "d4", "f4", "c3", "e3", "g5", "d2"})
    #These "asserts" using only for self-checking and not necessary for auto-testing
    assert safe_pawns({"b4", "d4", "f4", "c3", "e3", "g5", "d2"}) == 6
    assert safe_pawns({"b4", "c4", "d4", "e4", "f4", "g4", "e5"}) == 1
    print("Coding complete? Click 'Check' to review your tests and earn cool rewards!")