def main():
#startClock = time.time()
#print(solve(getInput()))
#stopClock = time.time() - startClock
#print("Elapsed time: ", stopClock)
values = input("Enter 'x' 'y' 'z': ")
print(solve(list(map(int, values.split()))))
def test_random():
for _i in range(1000):
x = randrange(1000)
y = randrange(1000)
z = randrange(1000)
zIndex = solve([x, y, z])
assert verify_solution([x, y, z], zIndex)
def test_stament_two():
assert solve([2, 1, 3]) == 3
def test_special_case_4():
assert solve([10, 10, 50]) == -1
def test_stamente_one():
assert solve([2, 0, 3]) == -1
def test_special_case_2():
assert solve([433, 423, 340]) == 68
def test_special_case():
assert solve([322, 747, 3]) == -1
def test_higher_limits_without_occurrence():
assert solve([1000, 0, 1]) == -1
def test_higher_limits():
assert solve([1000, 0, 1000]) == 1
def test_lower_limits():
assert solve([0, 0, 0]) == 0