+19
-2
lines changedFilter options
+19
-2
lines changed Original file line number Diff line number Diff line change
@@ -15,7 +15,7 @@
15 15
p=<3,0,0>, v=<-1,0,0>, a=<0,0,0>
16 16
"""
17 17 18 -
template = 'p=<{:d},{:d},{:d}>, v=<{:d},{:d},{:d}>, a=<{:d},{:d},{:d}>'
18 +
template = "p=<{:d},{:d},{:d}>, v=<{:d},{:d},{:d}>, a=<{:d},{:d},{:d}>"
19 19 20 20 21 21
def parsed(data):
@@ -26,10 +26,27 @@ def key(p):
26 26
return [abs(x) + abs(y) + abs(z) for x, y, z in chunks(reversed(p), 3)]
27 27 28 28 29 +
def abs_accel(p):
30 +
px, py, pz, vx, vy, vz, ax, ay, az = p
31 +
a = abs(ax) + abs(ay) + abs(az)
32 +
return a
33 + 34 + 35 +
def pos(p0, t):
36 +
px0, py0, pz0, vx0, vy0, vz0, ax0, ay0, az0 = p0
37 +
px1 = px0 + vx0 * t + (ax0 * t ** 2) // 2
38 +
py1 = py0 + vy0 * t + (ay0 * t ** 2) // 2
39 +
pz1 = pz0 + vz0 * t + (az0 * t ** 2) // 2
40 +
d = abs(px1) + abs(py1) + abs(pz1)
41 +
return d
42 + 43 + 29 44
def part_a(data):
30 45
particles = parsed(data)
31 46
p_min = min(particles, key=key)
32 -
return particles.index(p_min)
47 +
a_min = abs_accel(p_min)
48 +
d = {i: pos(p, 100) for i, p in enumerate(particles) if abs_accel(p) == a_min}
49 +
return min(d, key=d.get)
33 50 34 51 35 52
def part_b(data):
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