day13/sample1.in

@@ -1,15 +0,0 @@
-Button A: X+94, Y+34
-Button B: X+22, Y+67
-Prize: X=8400, Y=5400
-
-Button A: X+26, Y+66
-Button B: X+67, Y+21
-Prize: X=12748, Y=12176
-
-Button A: X+17, Y+86
-Button B: X+84, Y+37
-Prize: X=7870, Y=6450
-
-Button A: X+69, Y+23
-Button B: X+27, Y+71
-Prize: X=18641, Y=10279

day13/sol.py

@@ -1,65 +0,0 @@
-def parse(file):
-    while True:
-        a = file.readline()
-        if not a:
-            break
-        b = file.readline()
-        pr = file.readline()
-        blank = file.readline()
-
-        ax, ay = parse_numbers(a)
-        bx, by = parse_numbers(b)
-        px, py = parse_numbers(pr)
-        yield ax,ay, bx,by, px,py
-
-import re
-def parse_numbers(s):
-    return [int(x) for x in re.findall(r"\d+", s)]
-
-from fractions import Fraction as F
-
-import numpy
-def solve(file):
-    total = 0
-    total2 = 0
-    records = list(parse(file))
-    for record in records:
-        #print(record)
-        ax, ay, bx, by, px, py = record
-
-        # Part 1
-
-        # Solve the linear equation:
-        # k_a ax + k_b * bx = px
-        # k_a ay + k_b * by = py
-
-        M = numpy.array([[ax, bx], [ay, by]])
-        V = numpy.array([px, py])
-
-        sol = numpy.linalg.solve(M,V)
-        k1 = int(round(sol[0]))
-        k2 = int(round(sol[1]))
-
-        if k1*ax + k2*bx == px and k1*ay + k2*by == py:
-            #print("yes", k1, k2)
-            total += 3*k1 + k2
-
-        # Part 2
-        qx = px + 10000000000000
-        qy = py + 10000000000000
-
-        V2 = numpy.array([qx, qy])
-        sol = numpy.linalg.solve(M,V2)
-        k1 = int(round(sol[0]))
-        k2 = int(round(sol[1]))
-
-        if k1*ax + k2*bx == qx and k1*ay + k2*by == qy:
-            #print("yes2", k1, k2)
-            total2 += 3*k1 + k2
-
-    print(total)
-    print(total2)
-
-
-solve(open("sample1.in"))
-solve(open("input"))