Nim solver against bot

from copy import deepcopy

def calc_xor(sp):
    mxor = 0
    for x in sp:
        mxor ^= x
    return mxor

sp = [int(x) for x in input().split()]
p = 0
while sum(sp) > 0:
    if p == 0:
        copy_sp = deepcopy(sp)
        f = False
        for i in range(len(copy_sp)):
            if f:
                break
            for val in range(0, copy_sp[i] + 1):
                copy_sp[i] = val
                xxor = calc_xor(copy_sp)
                if xxor == 0:
                    f = True
					# left this many rocks
                    print(i, val)
                    sp = copy_sp
                    break
        p += 1
    else:
		# bot turn in format heap[i] = val (i,x)
        i, x = [int(x) for x in input().split()]
        sp[i] = x
        p -= 1