with open('input', 'r') as f:
    adapters = list(map(int, f.readlines()))

adapters.sort()
print(adapters)

num1 = 0
num3 = 1
prev = 0

for adapter in adapters:
    if adapter - prev == 1:
        num1 += 1
    if adapter - prev == 3:
        num3 += 1
    prev = adapter

print(f'Number of adapters: {len(adapters)}')
print(f'1-jolt: {num1}, 3-jolt: {num3}')
print('Solution:')
print(num1 * num3)