Submission #8830115


Source Code Expand

import sys

input=sys.stdin.readline
p2D = lambda x: print(*x, sep="\n")
def MI(): return map(int, sys.stdin.readline().split())

def main():
    h, w = MI()
    s = [[c == "#" for c in input()[:-1]] for _ in range(h)]
    #if w == 2:
    #    s = [list(sc) for sc in zip(*s)]
    #    h, w = w, h
    # p2D(s)
    t = [[-1] * (w - 1) for _ in range(h - 1)]
    for i in range(h - 1):
        si = s[i]
        si1 = s[i + 1]
        t[i] = [1 - (sum(si[j:j + 2]) + sum(si1[j:j + 2])) % 2 for j in range(w - 1)]
    # p2D(t)
    # print()
    ti=t[0]
    for i in range(1, h - 1):
        ti1=ti
        ti=t[i]
        for j in range(w - 1):
            if ti[j]: ti[j] = ti1[j] + 1
    # p2D(t)
    ans = 0
    for i in range(h - 1):
        jtol = [0] * (w - 1)
        jtor = [0] * (w - 1)
        ti=t[i]
        # 高さ、位置の順
        stack = [[-1, 0]]
        for j in range(w - 1):
            h=ti[j]
            while stack[-1][0] >= h: stack.pop()
            jtol[j] = stack[-1][1]
            stack.append([h, j + 1])

        stack = [[-1, w - 1]]
        for j in range(w - 2, -1, -1):
            h=ti[j]
            while stack[-1][0] >= h: stack.pop()
            jtor[j] = stack[-1][1]
            stack.append([h, j])

        for j in range(w - 1):
            tmp = (jtor[j] - jtol[j] + 1) * (ti[j] + 1)
            if tmp > ans: ans = tmp
    print(max(ans,h,w))

main()

Submission Info

Submission Time
Task F - Flip and Rectangles
User mkawa2
Language PyPy3 (2.4.0)
Score 0
Code Size 1456 Byte
Status WA
Exec Time 1875 ms
Memory 133256 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 0 / 700
Status
AC × 3
AC × 38
WA × 2
Set Name Test Cases
Sample sample1.txt, sample2.txt, sample3.txt
All sample1.txt, sample2.txt, sample3.txt, 1.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 2.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 3.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 4.txt, 5.txt, 6.txt, 7.txt, 8.txt, 9.txt, sample1.txt, sample2.txt, sample3.txt
Case Name Status Exec Time Memory
1.txt WA 225 ms 43376 KB
10.txt AC 1824 ms 132616 KB
11.txt AC 1023 ms 103260 KB
12.txt AC 1655 ms 129160 KB
13.txt AC 1657 ms 130824 KB
14.txt AC 1697 ms 131336 KB
15.txt AC 1720 ms 131976 KB
16.txt AC 1701 ms 131336 KB
17.txt AC 1727 ms 131976 KB
18.txt AC 1830 ms 133256 KB
19.txt AC 1731 ms 131848 KB
2.txt AC 199 ms 41584 KB
20.txt AC 1761 ms 131464 KB
21.txt AC 1741 ms 132104 KB
22.txt AC 1753 ms 132232 KB
23.txt AC 1775 ms 131720 KB
24.txt AC 1657 ms 129288 KB
25.txt AC 1655 ms 129032 KB
26.txt AC 1875 ms 133000 KB
27.txt AC 1767 ms 132616 KB
28.txt AC 1754 ms 133128 KB
29.txt AC 1687 ms 130824 KB
3.txt WA 1824 ms 132488 KB
30.txt AC 1664 ms 130824 KB
31.txt AC 1669 ms 130568 KB
32.txt AC 1673 ms 130824 KB
33.txt AC 1685 ms 130568 KB
34.txt AC 1709 ms 130952 KB
4.txt AC 1778 ms 132360 KB
5.txt AC 238 ms 45148 KB
6.txt AC 195 ms 41072 KB
7.txt AC 1842 ms 132872 KB
8.txt AC 1844 ms 132872 KB
9.txt AC 1781 ms 131720 KB
sample1.txt AC 163 ms 38256 KB
sample2.txt AC 162 ms 38256 KB
sample3.txt AC 163 ms 38256 KB