kollontai

y2015/p23.py

+insts = text.splitlines()
+
+i = 0:
+while i < len(lines):
+    inst[i]
+    i += 1
+

y2021/p02.py

+s1 = 0
+s2, aim = 0, 0
+for line in text.splitlines():
+    k, v = line.split()
+    ds = {'forward': 1, 'down': 1j, 'up': -1j}[k] * int(v)
+    s1 += ds
+    aim += ds.imag
+    s2 += ds.real + aim * ds.real * 1j
+ans1 = int(s1.real * s1.imag)
+ans2 = int(s2.real * s2.imag)