結果
| 問題 |
No.1283 Extra Fee
|
| コンテスト | |
| ユーザー |
Coki628
|
| 提出日時 | 2020-12-08 18:33:58 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
TLE
(最新)
AC
(最初)
|
| 実行時間 | - |
| コード長 | 1,972 bytes |
| コンパイル時間 | 159 ms |
| コンパイル使用メモリ | 82,960 KB |
| 実行使用メモリ | 110,532 KB |
| 最終ジャッジ日時 | 2024-11-16 07:15:58 |
| 合計ジャッジ時間 | 21,014 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 29 TLE * 1 |
ソースコード
import sys
def input(): return sys.stdin.readline().strip()
def list2d(a, b, c): return [[c] * b for i in range(a)]
def list3d(a, b, c, d): return [[[d] * c for j in range(b)] for i in range(a)]
def list4d(a, b, c, d, e): return [[[[e] * d for k in range(c)] for j in range(b)] for i in range(a)]
def ceil(x, y=1): return int(-(-x // y))
def INT(): return int(input())
def MAP(): return map(int, input().split())
def LIST(N=None): return list(MAP()) if N is None else [INT() for i in range(N)]
def Yes(): print('Yes')
def No(): print('No')
def YES(): print('YES')
def NO(): print('NO')
sys.setrecursionlimit(10**9)
INF = 10**19
MOD = 10**9 + 7
EPS = 10**-10
def dijkstra(grid: list, src: tuple) -> list:
""" グリッドダイクストラ(縦, 横, H*Wグリッド, 始点(h, w)) """
from heapq import heappush, heappop
H, W = len(grid), len(grid[0])
res = list3d(2, H, W, INF)
srch, srcw = src
que = [(0, 0, srch, srcw)]
res[0][srch][srcw] = 0
directions = ((1, 0), (-1, 0), (0, 1), (0, -1))
while que:
dist, used, h, w = heappop(que)
if res[used][h][w] < dist:
continue
for dh, dw in directions:
nh, nw = h + dh, w + dw
if grid[nh][nw] == -1:
continue
cost = grid[nh][nw]
if dist + cost < res[used][nh][nw]:
res[used][nh][nw] = dist + cost
heappush(que, (dist+cost, used, nh, nw))
if cost > 1 and not used:
cost = 1
if dist + cost < res[1][nh][nw]:
res[1][nh][nw] = dist + cost
heappush(que, (dist+cost, 1, nh, nw))
return res
N, M = MAP()
grid = list2d(N+2, N+2, 1)
for i in range(N+2):
grid[i][0] = -1
grid[i][N+1] = -1
grid[0][i] = -1
grid[N+1][i] = -1
for i in range(M):
h, w, c = MAP()
grid[h][w] += c
res = dijkstra(grid, (1, 1))
ans = min(res[0][N][N], res[1][N][N])
print(ans)
Coki628