結果
| 問題 |
No.5007 Steiner Space Travel
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2022-07-30 15:24:08 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
AC
|
| 実行時間 | 906 ms / 1,000 ms |
| コード長 | 2,165 bytes |
| コンパイル時間 | 302 ms |
| 実行使用メモリ | 86,852 KB |
| スコア | 3,521,672 |
| 最終ジャッジ日時 | 2022-07-30 15:24:38 |
| 合計ジャッジ時間 | 30,317 ms |
|
ジャッジサーバーID (参考情報) |
judge13 / judge14 |
| 純コード判定しない問題か言語 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 30 |
ソースコード
import sys
import time
import random
import math
input = lambda: sys.stdin.readline().rstrip()
# ----------------------- #
n, m = map(int, input().split())
ab = [tuple(map(int, input().split())) for _ in range(n)]
ab_set = set(ab)
ALP = 5
LIMIT = 0.8
START = time.time()
def calc_score(stations, root):
ans = 0
for i in range(1, n+m):
u, v = root[i][1]-1, root[i-1][1]-1
ut, vt = root[i][0], root[i-1][0]
if ut == 1:
if vt == 1:
ans += ALP * ALP * math.sqrt((ab[u][0] - ab[v][0])**2 + (ab[u][1] - ab[v][1])**2)
else:
ans += ALP * math.sqrt((ab[u][0] - stations[v][0])**2 + (ab[u][1] - stations[v][1])**2)
else:
if vt == 1:
ans += ALP * math.sqrt((stations[u][0] - ab[v][0])**2 + (stations[u][1] - ab[v][1])**2)
else:
ans += math.sqrt((stations[u][0] - stations[v][0])**2 + (stations[u][1] - stations[v][1])**2)
v = root[-1][1]
if root[-1][0] == 1:
ans += ALP * ALP * math.sqrt((ab[0][0] - ab[v][0])**2 + (ab[0][1] - ab[v][1])**2)
else:
ans += ALP * math.sqrt((ab[0][0] - ab[v][0])**2 + (ab[0][1] - ab[v][1])**2)
return ans
def make_stations():
stations = set()
while len(stations) < m:
i, j = random.randint(0, 1000), random.randint(0, 1000)
if (i, j) in ab_set:
continue
stations.add((i, j))
return list(stations)
def make_root(stations):
A = [(1, i, ab[i-1]) for i in range(1, n+1)]
B = [(2, i, stations[i-1]) for i in range(1, m+1)]
C = A[1:] + B
c = []
d = random.randint(50, 600)
for i in range(1000//d+2):
for j in range(1000//d+2):
tmp = []
for k in C:
if d*i <= k[2][0] <= d*(i+1) and d*j <= k[2][1] <= d*(j+1):
tmp.append(k)
for t in tmp:
C.remove(t)
tmp.sort(key=lambda x: x[2])
c.extend(tmp)
return A[:1] + c
vestscore = float('inf')
ans = []
while time.time() - START < LIMIT:
stations = make_stations()
root = make_root(stations)
score = calc_score(stations, root)
if score < vestscore:
vestscore = score
ans = [stations[:], root[:]]
for i in ans[0]:
print(*i)
print(len(ans[1])+1)
for i in ans[1]:
print(i[0], i[1])
print(1, 1)