aoc2023/d05/part2.py

import sys

en=enumerate

L:list[str] = sys.stdin.read().split('\n\n')
L = [l.split(':') for l in L]
L = [l[1].strip().split('\n') for l in L]
L = [list(map(lambda x: list(map(int,x.split())),l)) for l in L]
S = list(v for s in L[0] for v in s)
S = list(zip(S[0::2],S[1::2]))  # list of range (start, length)


low = 99999999999
for s,r in S:
    print(f'{s=} {r=}')
    for i in range(r):
        t = s+i
        #print(f'{t=}')
        for j,l in en(L[1:]):  # for each transformation
            ns = None  # transformed by a range
            #print(f'transf {j}, {l}')
            for [dst, src, rg] in l:
                #print(f'{src=} {dst=} {rg}')
                if src <= t < src+rg:
                    ns = dst+(t-src)
                    #print(f'transformed {ns}')
                    break
            if ns:
                t = ns
        low = min(low, t)
print(low)