file = open("in.txt", "r")

lns = file.readlines()

def p1():
    count = 0
    for i in range(1, len(lns)):
        if int(lns[i]) >= int(lns[i-1]):
            count += 1
    return count

def p2():
    count = 0
    sets = []
    for i in range(len(lns)):
        if i + 3 > len(lns):
            continue
        temp = [None] * 3
        temp[0] = lns[i]
        temp[1] = lns[i+1]
        temp[2] = lns[i+2]
        if len(sets) == 0:
            index = 0
        else:
            index = len(sets) + 1
        sets.append(temp)
        
    for i in range(1, len(sets)):
        set1 = sets[i]
        set2 = sets[i-1]
        sum1 = int(set1[0]) + int(set1[1]) + int(set1[2])
        sum2 = int(set2[0]) + int(set2[1]) + int(set2[2])
        if sum1 > sum2:
            count += 1
    
    return count

print(f"part 1: {p1()}")
print(f"part 2: {p2()}")