Created
April 23, 2013 09:40
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# coding: utf-8 | |
def dfs(i, w, c, x): | |
if i == len(w): | |
return True | |
wi = w[i] | |
for j in range(len(c)): | |
if wi > c[j]: | |
continue | |
new_c = list(c) | |
new_c[j] -= wi | |
x[i] = j | |
is_feasible = dfs(i + 1, w, new_c, x) | |
if is_feasible: | |
return True | |
return False | |
def solve(w, c): | |
if sum(w) > sum(c): | |
raise Exception('No feasible solution') | |
x = [None] * len(w) | |
is_feasible = dfs(0, w, c, x) | |
if is_feasible: | |
return x | |
else: | |
raise Exception('No feasible solution') | |
def gen(d, n): | |
from random import randrange | |
w = [randrange(10, 100) for _ in range(n)] | |
v = sum(w) // d | |
c = [randrange(max(1, v - 20), v + 20) for _ in range(d)] | |
return w, c | |
def main(): | |
import sys | |
sys.setrecursionlimit(10000) | |
#d = int(input()) | |
#c = [int(input()) for _ in range(d)] | |
#n = input() | |
#w = [int(input()) for _ in range(n)] | |
w, c = gen(3, 1000) | |
w.sort(reverse=True) | |
solution = solve(w, c) | |
print(solution) | |
if __name__ == '__main__': | |
main() |
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