Submission #25497

# Submission time Handle Problem Language Result Execution time Memory
25497 2017-06-22T13:49:22 Z admin Young Zebra (KRIII5_YZ) PyPy
7 / 7
406 ms 31 KB
MOD = int(1e9 + 7)
 
import sys
sys.setrecursionlimit(10000000)
 
N, M = map(int, sys.stdin.readline().split())
S = ["" for _ in xrange(N)]
for i in xrange(N): S[i] = sys.stdin.readline().strip()
 
assert 1 <= N <= 400
assert 1 <= M <= 400
assert set(list("".join(S))).issubset(set(['B', 'W']))
 
visited = [[False for j in xrange(M)] for i in xrange(N)]
comp = [[0 for j in xrange(M)] for i in xrange(N)]
ans = [[-1 for j in xrange(M)] for i in xrange(N)]
pos = [[(0, 0) for j in xrange(M)] for i in xrange(N)]
 
num_components = 0
vertices = []
 
from collections import deque
 
def dfs (x, y, c):
    que = deque([(x, y)])
    que_len = 1
    visited[x][y] = True
    pos[x][y] = (x, y)
    ret = 0
    while que_len > 0:
        rx, ry = que.popleft()
        que_len -= 1
        x = (rx + N * 2) % N
        y = (ry + M * 2) % M
        ret += 1
        vertices.append((x, y))
        for dx, dy in [(0, -1), (0, +1), (-1, 0), (+1, 0)]:
            nx = (x + dx + N) % N
            ny = (y + dy + M) % M
            nrx = rx + dx
            nry = ry + dy
            if S[nx][ny] != c: continue
            if not visited[nx][ny]:
                visited[nx][ny] = True
                pos[nx][ny] = (nrx, nry)
                que.append((nrx, nry))
                que_len += 1
            elif pos[nx][ny] != (nrx, nry):
                ret = 1e9
    return ret
 
    """
    if visited[x][y]: return 0
    pos[x][y] = (rx, ry)
    visited[x][y] = True
    vertices.append((x, y))
    #print(x, y, rx, ry, c)
    ret = 1
    return ret"""
 
for i in xrange(N):
    for j in xrange(M):
        if not visited[i][j]:
            num_components += 1
            vertices = []
            sz = dfs(i, j, S[i][j])
            #print(i, j, sz, vertices)
            if sz < 1e9:
                for x, y in vertices: ans[x][y] = sz
 
print "\n".join([" ".join(map(str, ans[i])) for i in xrange(N)])
# Verdict Execution time Memory Grader output
1 Correct 353 ms 30 KB Output is correct
2 Correct 290 ms 30 KB Output is correct
3 Correct 306 ms 30 KB Output is correct
4 Correct 320 ms 30 KB Output is correct
5 Correct 331 ms 30 KB Output is correct
6 Correct 266 ms 30 KB Output is correct
7 Correct 329 ms 30 KB Output is correct
8 Correct 294 ms 30 KB Output is correct
9 Correct 383 ms 30 KB Output is correct
10 Correct 257 ms 30 KB Output is correct
11 Correct 279 ms 31 KB Output is correct
12 Correct 297 ms 31 KB Output is correct
13 Correct 337 ms 31 KB Output is correct
14 Correct 311 ms 31 KB Output is correct
15 Correct 406 ms 31 KB Output is correct
16 Correct 310 ms 31 KB Output is correct
17 Correct 251 ms 31 KB Output is correct
18 Correct 218 ms 31 KB Output is correct
19 Correct 220 ms 31 KB Output is correct
20 Correct 302 ms 31 KB Output is correct
21 Correct 308 ms 31 KB Output is correct
22 Correct 323 ms 31 KB Output is correct
23 Correct 318 ms 31 KB Output is correct
24 Correct 357 ms 31 KB Output is correct
25 Correct 393 ms 31 KB Output is correct
26 Correct 25 ms 31 KB Output is correct
27 Correct 26 ms 31 KB Output is correct
28 Correct 72 ms 31 KB Output is correct
29 Correct 95 ms 31 KB Output is correct
30 Correct 32 ms 31 KB Output is correct
31 Correct 31 ms 31 KB Output is correct
32 Correct 63 ms 31 KB Output is correct
33 Correct 46 ms 31 KB Output is correct
34 Correct 30 ms 31 KB Output is correct
35 Correct 38 ms 31 KB Output is correct
36 Correct 76 ms 31 KB Output is correct
37 Correct 131 ms 31 KB Output is correct
38 Correct 93 ms 31 KB Output is correct
39 Correct 121 ms 31 KB Output is correct
40 Correct 103 ms 31 KB Output is correct