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day18.py
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day18.py
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from rich import print
import streamlit as st
import os
from utils import *
# Define which function to apply to parse the input data, from the text file or the text areas
# file_to_lines, file_to_ints, line_to_ints, line_to_str
basic_transform = file_to_lines
answer = None
st.session_state.file_exists = os.path.exists(get_filename())
with st.sidebar:
select1 = st.selectbox("Part 1", ['examples', 'data'], key='select1')
select2 = st.selectbox("Part 2", ['examples', 'data'], key='select2')
directions = {
0: 'R',
1: 'D',
2: 'L',
3: 'U',
}
def get_polygon(data, offset, part_one=True):
current = (0, 0)
polygon = [(current[0]+offset[0], current[1]+offset[1]), ]
for i, line in enumerate(data[:-1]):
d, step, color = line.split()
if part_one:
step = int(step)
next_dir = data[i+1].split()[0]
else:
step = int("0x"+color[2:-2], 16)
d = directions[int(color[-2:-1])]
next_dir = directions[int(data[i+1].split()[2][-2:-1])]
if d == 'R':
if next_dir == 'D':
if offset == (0, 0): offset = (1, 0)
elif offset == (1, 1): offset = (0, 1)
elif offset == (0, 1): offset = offset
elif offset == (1, 0): offset = offset
else:
if offset == (0, 0): offset = offset
elif offset == (1, 1): offset = offset
elif offset == (0, 1): offset = (1, 1)
elif offset == (1, 0): offset = (0, 0)
new_point = (current[0]+offset[0]+step, current[1]+offset[1])
current = (current[0]+step, current[1])
elif d == 'L':
if next_dir == 'D':
if offset == (0, 0): offset = offset
elif offset == (1, 1): offset = offset
elif offset == (0, 1): offset = (1, 1)
elif offset == (1, 0): offset = (0, 0)
else:
if offset == (0, 0): offset = (1, 0)
elif offset == (1, 1): offset = (0, 1)
elif offset == (0, 1): offset = offset
elif offset == (1, 0): offset = offset
new_point = (current[0]+offset[0]-step, current[1]+offset[1])
current = (current[0]-step, current[1])
elif d == 'U':
if next_dir == 'R':
if offset == (0, 0): offset = offset
elif offset == (1, 1): offset = offset
elif offset == (0, 1): offset = (0, 0)
elif offset == (1, 0): offset = (1, 1)
else:
if offset == (0, 0): offset = (0, 1)
elif offset == (1, 1): offset = (1, 0)
elif offset == (0, 1): offset = offset
elif offset == (1, 0): offset = offset
new_point = (current[0]+offset[0], current[1]+offset[1]-step)
current = (current[0], current[1]-step)
else:
if next_dir == 'R':
if offset == (0, 0): offset = (0, 1)
elif offset == (1, 1): offset = (1, 0)
elif offset == (0, 1): offset = offset
elif offset == (1, 0): offset = offset
else:
if offset == (0, 0): offset = offset
elif offset == (1, 1): offset = offset
elif offset == (0, 1): offset = (0, 0)
elif offset == (1, 0): offset = (1, 1)
new_point = (current[0]+offset[0], current[1]+offset[1]+step)
current = (current[0], current[1]+step)
polygon.append(new_point)
return polygon
def sol1(data):
areas = []
polygon = get_polygon(data, (0, 0), part_one=True)
areas.append(get_area(polygon))
polygon = get_polygon(data, (1, 1), part_one=True)
areas.append(get_area(polygon))
areas.append(get_area(polygon))
return max(areas)
def get_area(polygon):
polygon += [polygon[0], ]
total = 0
for i in range(len(polygon)-1):
x1, y1 = polygon[i]
x2, y2 = polygon[i+1]
total += (x1*y2-x2*y1)
return total // 2
def sol2(data):
areas = []
polygon = get_polygon(data, (0, 0), part_one=False)
areas.append(get_area(polygon))
polygon = get_polygon(data, (1, 1), part_one=False)
areas.append(get_area(polygon))
areas.append(get_area(polygon))
return max(areas)
if not st.session_state.file_exists:
data = st.text_area("input text from site")
if data:
write_to_file(data)
st.rerun()
st.markdown("This should disappear after execution")
st.divider()
else:
data = load()
if not data:
st.stop()
data = basic_transform(data)
data_bk = data.copy()
st.markdown("### Part 1")
if select1 == 'data':
st.markdown("#### Final answer")
else:
st.markdown("#### Example")
c1, c2 = st.columns(2)
with c1:
value = st.session_state.get("example1_data", "")
data = st.text_area('example 1', value=value)
if data:
st.session_state["example1_data"] = data
data = basic_transform(data)
with c2:
value = st.session_state.get("example1_answer", "")
answer = st.text_input('answer 1', value=value)
if answer:
st.session_state["example1_answer"] = answer
if data:
if answer:
answer = int(answer)
if sol1(data) != answer:
st.markdown(f"**:red[Example failing: {sol1(data)=} != {answer}]**")
else:
st.markdown("**:green[All good]**")
st.markdown(f"{sol1(data)=}")
st.divider()
st.markdown("### Part 2")
answer = None
data = data_bk
if select2 == 'data':
st.markdown("#### Final answer")
else:
st.markdown("#### Example")
c1, c2 = st.columns(2)
with c1:
value = st.session_state.get("example2_data", "")
data = st.text_area('example 2', value=value)
if data:
st.session_state["example2_data"] = data
data = basic_transform(data)
with c2:
value = st.session_state.get("example2_answer", "")
answer = st.text_input('answer 2', value=value)
if answer:
st.session_state["example2_answer"] = answer
if data:
if answer:
answer = int(answer)
if sol2(data) != answer:
st.markdown(f"**:red[Example failing: {sol2(data)=} != {answer}]**")
else:
st.markdown(":green[All good]")
st.markdown(f"{sol2(data)=}")