Submission #12,016

12016

2024-11-24 23:50:19

pypy3

Accepted 100/100

597ms

26148 KiB

#!/usr/bin/env python3

from sys import stdin
input = stdin.readline

inf=10**9

def solv():
    input()
    N, M = map(int, input().split())
    S = ["" for i in range(N)]
    for i in range(N):
        S[i] = input().strip()
    if M < 3:
        row = 0
    else:
        dp11=[inf]*(M-1)
        dp00=[inf]*(M-1)
        dp10=[inf]*(M-1)
        dp01=[inf]*(M-1)
        dp11[0]=2
        dp00[0]=0
        dp10[0]=1
        dp01[0]=1
        for i in range(M-2):
            cur=set()
            for j in range(N):
                cur.add(S[j][i:i+3])
            ok000 = '000' in cur or '111' in cur
            ok100 = '100' in cur or '011' in cur
            if not ok000:
                dp00[i+1]=dp00[i]
                dp11[i+1]=1+dp11[i]
            if not ok100:
                dp00[i+1]=min(dp00[i+1],dp10[i])
                dp11[i+1]=min(dp11[i+1],1+dp01[i])
            ok010 = '010' in cur or '101' in cur
            ok001 = '001' in cur or '110' in cur
            if not ok010:
                dp10[i+1]=dp01[i]
                dp01[i+1]=1+dp10[i]
            if not ok001:
                dp10[i+1]=min(dp10[i+1],dp11[i])
                dp01[i+1]=min(dp01[i+1],1+dp00[i])
        row=min(dp00[-1],dp01[-1],dp10[-1],dp11[-1])
    if N < 3:
        col = 0
    else:
        dp11=[inf]*(N-1)
        dp00=[inf]*(N-1)
        dp10=[inf]*(N-1)
        dp01=[inf]*(N-1)
        dp11[0]=2
        dp00[0]=0
        dp10[0]=1
        dp01[0]=1
        for i in range(N-2):
            cur=set()
            for j in range(M):
                cur.add(S[i][j]+S[i+1][j]+S[i+2][j])
            ok000 = '000' in cur or '111' in cur
            ok100 = '100' in cur or '011' in cur
            if not ok000:
                dp00[i+1]=dp00[i]
                dp11[i+1]=1+dp11[i]
            if not ok100:
                dp00[i+1]=min(dp00[i+1],dp10[i])
                dp11[i+1]=min(dp11[i+1],1+dp01[i])
            ok010 = '010' in cur or '101' in cur
            ok001 = '001' in cur or '110' in cur
            if not ok010:
                dp10[i+1]=dp01[i]
                dp01[i+1]=1+dp10[i]
            if not ok001:
                dp10[i+1]=min(dp10[i+1],dp11[i])
                dp01[i+1]=min(dp01[i+1],1+dp00[i])
        col=min(dp00[-1],dp01[-1],dp10[-1],dp11[-1])
    if row+col<inf:
        print(row+col)
    else:
        print(-1)

for test in range(int(input())):
    solv()

	Sum	Test	Verdict	Time	Memory
subtask1	0/0
subtask1	0/0	1	Accepted	43ms	21232 KiB
subtask2	9/9
		2	Accepted	45ms	21300 KiB
		3	Accepted	50ms	21204 KiB
		4	Accepted	48ms	21204 KiB
		5	Accepted	45ms	21216 KiB
		6	Accepted	50ms	21228 KiB
		7	Accepted	50ms	21288 KiB
		8	Accepted	43ms	21216 KiB
		9	Accepted	43ms	21268 KiB
		10	Accepted	48ms	21164 KiB
		11	Accepted	50ms	21176 KiB
		12	Accepted	45ms	21180 KiB
		13	Accepted	45ms	21344 KiB
		14	Accepted	43ms	21228 KiB
		15	Accepted	50ms	21228 KiB
		16	Accepted	43ms	21304 KiB
		17	Accepted	41ms	21172 KiB
subtask3	12/12
		18	Accepted	48ms	21252 KiB
		19	Accepted	64ms	21800 KiB
		20	Accepted	64ms	22236 KiB
		21	Accepted	43ms	21356 KiB
		22	Accepted	52ms	21152 KiB
		23	Accepted	74ms	22248 KiB
		24	Accepted	64ms	21976 KiB
		25	Accepted	63ms	21960 KiB
subtask4	20/20
		26	Accepted	45ms	21300 KiB
		27	Accepted	50ms	21204 KiB
		28	Accepted	48ms	21204 KiB
		29	Accepted	45ms	21216 KiB
		30	Accepted	50ms	21228 KiB
		31	Accepted	50ms	21288 KiB
		32	Accepted	43ms	21216 KiB
		33	Accepted	43ms	21268 KiB
		34	Accepted	48ms	21164 KiB
		35	Accepted	50ms	21176 KiB
		36	Accepted	45ms	21180 KiB
		37	Accepted	45ms	21344 KiB
		38	Accepted	43ms	21228 KiB
		39	Accepted	50ms	21228 KiB
		40	Accepted	43ms	21304 KiB
		41	Accepted	41ms	21172 KiB
		42	Accepted	43ms	21164 KiB
		43	Accepted	61ms	21596 KiB
		44	Accepted	78ms	22316 KiB
		45	Accepted	43ms	21172 KiB
		46	Accepted	45ms	21320 KiB
		47	Accepted	68ms	22252 KiB
		48	Accepted	71ms	22116 KiB
		49	Accepted	82ms	22508 KiB
		50	Accepted	72ms	22504 KiB
		51	Accepted	43ms	21324 KiB
		52	Accepted	52ms	21156 KiB
		53	Accepted	72ms	21740 KiB
subtask5	59/59
		54	Accepted	52ms	21140 KiB
		55	Accepted	45ms	21300 KiB
		56	Accepted	50ms	21204 KiB
		57	Accepted	48ms	21204 KiB
		58	Accepted	45ms	21216 KiB
		59	Accepted	50ms	21228 KiB
		60	Accepted	50ms	21288 KiB
		61	Accepted	43ms	21216 KiB
		62	Accepted	43ms	21268 KiB
		63	Accepted	48ms	21164 KiB
		64	Accepted	50ms	21176 KiB
		65	Accepted	45ms	21180 KiB
		66	Accepted	45ms	21344 KiB
		67	Accepted	43ms	21228 KiB
		68	Accepted	50ms	21228 KiB
		69	Accepted	43ms	21304 KiB
		70	Accepted	41ms	21172 KiB
		71	Accepted	48ms	21252 KiB
		72	Accepted	64ms	21800 KiB
		73	Accepted	64ms	22236 KiB
		74	Accepted	43ms	21356 KiB
		75	Accepted	52ms	21152 KiB
		76	Accepted	74ms	22248 KiB
		77	Accepted	64ms	21976 KiB
		78	Accepted	63ms	21960 KiB
		79	Accepted	43ms	21164 KiB
		80	Accepted	61ms	21596 KiB
		81	Accepted	78ms	22316 KiB
		82	Accepted	43ms	21172 KiB
		83	Accepted	45ms	21320 KiB
		84	Accepted	68ms	22252 KiB
		85	Accepted	71ms	22116 KiB
		86	Accepted	82ms	22508 KiB
		87	Accepted	72ms	22504 KiB
		88	Accepted	43ms	21324 KiB
		89	Accepted	52ms	21156 KiB
		90	Accepted	72ms	21740 KiB
		91	Accepted	597ms	26148 KiB
		92	Accepted	398ms	25012 KiB
		93	Accepted	170ms	22992 KiB
		94	Accepted	136ms	23192 KiB
		95	Accepted	89ms	22764 KiB
		96	Accepted	93ms	22508 KiB
		97	Accepted	82ms	22252 KiB
		98	Accepted	90ms	22276 KiB