[Python/2019] Restructure solutions

Python/2019/19.py

@@ -0,0 +1,129 @@
+from lib import *
+
+input = read_input(2019, 19)
+
+
+class IntCode:
+    def __init__(self, mem):
+        self.mem = {i: e for i, e in enumerate(mem)}
+        self.pc = 0
+        self.running = False
+        self.inp = []
+        self.out = []
+        self.rel = 0
+
+    def start(self):
+        self.running = True
+        self.cont()
+
+    def get_arg(self, i):
+        mode = self.mem[self.pc] // (10 ** (i + 1)) % 10
+        out = self.mem[self.pc + i]
+        if mode == 1:
+            return out
+        elif mode == 2:
+            out += self.rel
+        return self.mem.get(out, 0)
+
+    def write_arg(self, i, value):
+        mode = self.mem[self.pc] // (10 ** (i + 1)) % 10
+        pos = self.mem[self.pc + i]
+        assert mode != 1
+        if mode == 2:
+            pos += self.rel
+        self.mem[pos] = value
+
+    def cont(self):
+        while True:
+            opcode = self.mem[self.pc] % 100
+
+            if opcode == 1:
+                self.write_arg(3, self.get_arg(1) + self.get_arg(2))
+                self.pc += 4
+            elif opcode == 2:
+                self.write_arg(3, self.get_arg(1) * self.get_arg(2))
+                self.pc += 4
+            elif opcode == 3:
+                if not self.inp:
+                    return
+                self.write_arg(1, self.inp.pop(0))
+                self.pc += 2
+            elif opcode == 4:
+                self.out.append(self.get_arg(1))
+                self.pc += 2
+            elif opcode == 5:
+                if self.get_arg(1):
+                    self.pc = self.get_arg(2)
+                else:
+                    self.pc += 3
+            elif opcode == 6:
+                if not self.get_arg(1):
+                    self.pc = self.get_arg(2)
+                else:
+                    self.pc += 3
+            elif opcode == 7:
+                self.write_arg(3, int(self.get_arg(1) < self.get_arg(2)))
+                self.pc += 4
+            elif opcode == 8:
+                self.write_arg(3, int(self.get_arg(1) == self.get_arg(2)))
+                self.pc += 4
+            elif opcode == 9:
+                self.rel += self.get_arg(1)
+                self.pc += 2
+            elif opcode == 99:
+                self.running = False
+                return
+
+
+(*mem,) = map(int, input.split(","))
+
+
+def test(x, y):
+    intcode = IntCode(mem)
+    intcode.inp += [x, y]
+    intcode.start()
+    return intcode.out.pop(0)
+
+
+print(sum(test(i, j) for i in range(50) for j in range(50)))
+
+
+(*mem,) = map(int, input.split(","))
+
+dp = {}
+
+
+def test(x, y):
+    if (x, y) not in dp:
+        intcode = IntCode(mem)
+        intcode.inp += [x, y]
+        intcode.start()
+        dp[(x, y)] = intcode.out.pop(0)
+    return dp[(x, y)]
+
+
+SIZE = 100
+x = 0
+y = 0
+done = False
+while not done:
+    y += 1
+    for x in range(y + 1):
+        if test(x, y - x):
+            y = y - x
+            done = True
+            break
+
+
+while True:
+    while not test(x, y):
+        y += 1
+    while test(x, y + 1):
+        y += 1
+
+    assert test(x, y)
+    if y >= SIZE - 1 and test(x + SIZE - 1, y - (SIZE - 1)):
+        print(x * 10000 + y - (SIZE - 1))
+        break
+
+    x += 1