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];

function part1(depths) {
    let counter = 0;
    let prev = depths[0];
    for (let index = 1; index < depths.length; index++) {
        const current = depths[index];
        if (current > prev) {
            counter++;
        }
        prev = current;
    }
    return counter;
}

console.log(part1(original_depths));

function part2(depths) {
    let summed_depths = [];
    for (let index = 0; index < depths.length - 2; index++) {
        summed_depths[index] = depths[index] + depths[index+1] + depths[index+2];
    }

    return part1(summed_depths);
}

console.log(part2(original_depths));

function part2fancy(depths) {
    let counter = 0;
    let prev = depths[0] + depths[1] + depths[2];
    for (let index = 1; index < depths.length - 2; index++) {
        const current = depths[index] + depths[index+1] + depths[index+2];
        if (current > prev) {
            counter++;
        }
        prev = current;
    }
    return counter;
}

console.log(part2fancy(original_depths));