Submission #2821484


Source Code Expand

H, W = map(int, input().split())
C = [list(map(int, input().split())) for i in range(H)]

R = [[0] * W for i in range(H)]
for i in range(H):
    for j in range(W):
        if (i+j) % 2 == 0:
            R[i][j] = C[i][j]
        else:
            R[i][j] = -C[i][j]

for i in range(1, H):
    R[i][0] += R[i-1][0]
for j in range(1, W):
    R[0][j] += R[0][j-1]
for i in range(1, H):
    for j in range(1, W):
        R[i][j] += R[i-1][j] + R[i][j-1] - R[i-1][j-1]

for i in range(H):
    R[i].insert(0, 0)
R.insert(0, [0] * (W+1))

ans = 0
for i in range(1, H+1):
    for j in range(1, W+1):
        for k in range(i, H+1):
            for l in range(j, W+1):
                if R[k][l] - R[k][j-1] - R[i-1][l] + R[i-1][j-1] == 0:
                    ans = max(ans, (k-i+1)*(l-j+1))

print(ans)

Submission Info

Submission Time
Task B - チョコレート
User AT274
Language PyPy3 (2.4.0)
Score 100
Code Size 827 Byte
Status AC
Exec Time 808 ms
Memory 42860 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 100 / 100
Status
AC × 5
AC × 25
Set Name Test Cases
Sample subtask0_sample-01.txt, subtask0_sample-02.txt, subtask0_sample-03.txt, subtask0_sample-04.txt, subtask0_sample-05.txt
All subtask0_sample-01.txt, subtask0_sample-02.txt, subtask0_sample-03.txt, subtask0_sample-04.txt, subtask0_sample-05.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt, subtask1_20.txt
Case Name Status Exec Time Memory
subtask0_sample-01.txt AC 199 ms 38256 KB
subtask0_sample-02.txt AC 204 ms 38256 KB
subtask0_sample-03.txt AC 205 ms 38256 KB
subtask0_sample-04.txt AC 203 ms 38256 KB
subtask0_sample-05.txt AC 202 ms 38256 KB
subtask1_01.txt AC 206 ms 38256 KB
subtask1_02.txt AC 201 ms 38256 KB
subtask1_03.txt AC 199 ms 38256 KB
subtask1_04.txt AC 207 ms 39024 KB
subtask1_05.txt AC 213 ms 39536 KB
subtask1_06.txt AC 216 ms 39792 KB
subtask1_07.txt AC 203 ms 38640 KB
subtask1_08.txt AC 212 ms 39408 KB
subtask1_09.txt AC 727 ms 42604 KB
subtask1_10.txt AC 304 ms 42476 KB
subtask1_11.txt AC 679 ms 42604 KB
subtask1_12.txt AC 693 ms 42604 KB
subtask1_13.txt AC 691 ms 42860 KB
subtask1_14.txt AC 725 ms 42460 KB
subtask1_15.txt AC 717 ms 42332 KB
subtask1_16.txt AC 666 ms 42476 KB
subtask1_17.txt AC 622 ms 42220 KB
subtask1_18.txt AC 197 ms 38256 KB
subtask1_19.txt AC 215 ms 39408 KB
subtask1_20.txt AC 808 ms 42220 KB