day1_1.swift

let input = [
    94735,
    80130,
    127915,
    145427,
    89149,
    91232,
    100629,
    97340,
    86278,
    87034,
    147351,
    123045,
    91885,
    85973,
    64130,
    113244,
    58968,
    76296,
    127931,
    98145,
    120731,
    98289,
    110340,
    118285,
    60112,
    57177,
    58791,
    59012,
    66950,
    139387,
    145378,
    86204,
    147082,
    84956,
    134161,
    148664,
    74278,
    96746,
    144525,
    81214,
    70966,
    107050,
    134179,
    138587,
    80236,
    139871,
    104439,
    64643,
    145453,
    94791,
    51690,
    94189,
    148476,
    79956,
    81760,
    149796,
    109544,
    57533,
    142999,
    126419,
    115434,
    57092,
    64244,
    109663,
    94701,
    109265,
    145851,
    95183,
    84433,
    53818,
    106234,
    127380,
    149774,
    59601,
    138851,
    54488,
    100877,
    136952,
    61538,
    67705,
    60299,
    130769,
    113176,
    106723,
    133280,
    111065,
    63688,
    139307,
    122703,
    60162,
    89567,
    63994,
    66608,
    126376,
    136052,
    112255,
    98525,
    134023,
    141479,
    98200,
]

func getFuel(for module: Int) -> Int {
    return (module/3) - 2
}

var totalFuel = 0
for module in input {
    totalFuel += getFuel(for: module)
}
print(totalFuel)