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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#213377#2068. 最长公共前缀nodgd10010014ms124936kbC++4.0kb2024-11-11 21:00:272024-11-11 23:04:41

answer

#include <bits/stdc++.h>

using namespace std;

const int BUFFER_SIZE = 1 << 20;
char rb[BUFFER_SIZE], *rp = rb, *rt = rb;
inline char read_char() {
    return rp == rt ? (rt = rb + fread(rb, 1, BUFFER_SIZE, stdin), rp = rb, *rp ++) : *rp ++;
}
inline int read_int() {
    int x = 0;
    char ch = read_char(), flag = 0;
    while (ch != '-' && (ch < '0' || ch > '9')) {
        ch = read_char();
    }
    if (ch == '-') {
        flag = 1;
        ch = read_char();
    }
    for (x = 0; ch >= '0' && ch <= '9'; ch = read_char()) {
        x = x * 10 + (ch - '0');
    }
    return flag ? -x : x;
}
inline int read_string(char* s) {
    char* s0 = s;
    for (char ch = read_char(); ch > ' '; ch = read_char()) {
        *s ++ = ch;
    }
    return s - s0;
}

char wb[BUFFER_SIZE], *wp = wb;
inline void write_flush() {
    fwrite(wb, 1, wp - wb, stdout);
    wp = wb;
}
inline void write_char(char c) {
    *wp ++ = c;
    if (wp == wb + BUFFER_SIZE) {
        write_flush();
    }
}
inline void write_int(int x) {
    if (x == 0) {
        write_char('0');
    } else if (x < 0) {
        write_char('-');
        x = -x;
    }
    static char b[32], i;
    for (i = 1; x; i ++) {
        b[i] = x % 10 + '0';
        x /= 10;
    }
    for (i --; i; i --) {
        write_char(b[i]);
    }
}

const int MAX_N = 2000 + 5;
const int B = 31, P = 999999001;

int N, M, Q;
char a[MAX_N][MAX_N];
int pw[MAX_N], hh[MAX_N][MAX_N], hv[MAX_N][MAX_N], hd[MAX_N << 1][MAX_N];
int fh[MAX_N][MAX_N], fv[MAX_N][MAX_N], fd[MAX_N << 1][MAX_N];

int main() {
    N = read_int(), M = read_int(), Q = read_int();
    for (int i = 1; i <= N; i ++) {
        read_string(a[i] + 1);
    }
    pw[0] = -1;
    for (int i = 1; i <= N || i <= M; i ++) {
        pw[i] = pw[i - 1] * B;
    }
    for (int i = N; i >= 1; i --) {
        for (int j = M; j >= 1; j --) {
            int aa = a[i][j] - 96;
            hh[i][j] = hh[i][j + 1] * B + aa;
            hv[j][i] = hv[j][i + 1] * B + aa;
            hd[i - j + M][i + j >> 1] = hd[i - j + M][i + j + 2 >> 1] * B + aa;
            fh[i][j] = a[i][j] == a[i][j + 1] ? fh[i][j + 1] + 1 : 1;
            fv[j][i] = a[i][j] == a[i + 1][j] ? fv[j][i + 1] + 1 : 1;
            fd[i - j + M][i + j >> 1] = a[i][j] == a[i + 1][j + 1] ? fd[i - j + M][i + j + 2 >> 1] + 1 : 1;
        }
    }
    for (int i = 1; i <= Q; i ++) {
        int ans = 0;
        char d1[4], d2[4];
        int x1 = read_int(), y1 = read_int();
        read_string(d1);
        int x2 = read_int(), y2 = read_int();
        read_string(d2);
        if (a[x1][y1] == a[x2][y2]) {
            int f1 = *d1 == 'H' ? fh[x1][y1] : *d1 == 'V' ? fv[y1][x1] : fd[x1 - y1 + M][x1 + y1 >> 1];
            int f2 = *d2 == 'H' ? fh[x2][y2] : *d2 == 'V' ? fv[y2][x2] : fd[x2 - y2 + M][x2 + y2 >> 1];
            if (f1 != f2) {
                ans = min(f1, f2);
            } else {
                ans += f1;
                *d1 == 'H' ? y1 += f1 : *d1 == 'V' ? x1 += f1 : (x1 += f1, y1 += f1);
                *d2 == 'H' ? y2 += f2 : *d2 == 'V' ? x2 += f2 : (x2 += f2, y2 += f2);
                int n1 = *d1 == 'H' ? M - y1 + 1 : *d1 == 'V' ? N - x1 + 1 : min(N - x1 + 1, M - y1 + 1);
                int n2 = *d2 == 'H' ? M - y2 + 1 : *d2 == 'V' ? N - x2 + 1 : min(N - x2 + 1, M - y2 + 1);
                int* h1 = *d1 == 'H' ? hh[x1] + y1 : *d1 == 'V' ? hv[y1] + x1 : hd[x1 - y1 + M] + (x1 + y1 >> 1);
                int* h2 = *d2 == 'H' ? hh[x2] + y2 : *d2 == 'V' ? hv[y2] + x2 : hd[x2 - y2 + M] + (x2 + y2 >> 1);
                int l = 0, r = min(n1, n2);
                while (l < r) {
                    int m = l + r + 1 >> 1;
                    int t1 = h1[0] + h1[m] * pw[m];
                    int t2 = h2[0] + h2[m] * pw[m];
                    t1 == t2 ? l = m : r = m - 1;
                }
                ans += l;
            }
        }
        write_int(ans), write_char('\n');
    }
    write_flush();
    fprintf(stderr, "clock=%d\n", clock());
    return 0;
}

详细

小提示:点击横条可展开更详细的信息

Subtask #1:

score: 11
Accepted

Test #1:

score: 11
Accepted
time: 172ms
memory: 90624kb

input:

1000 2000 10000
awanannwnnaaawwnwawanwnwaaaanwnaaananwawwwwnannannawwwawwaaaaannwnwnwnnaaawaawawannn...

output:

0
0
0
0
0
0
0
2
0
1
0
0
1
0
1
0
2
0
1
2
0
0
2
0
1
1
0
0
0
0
1
0
0
0
1
0
0
1
0
1
1
0
2
0
1
3
1
0
3
0
...

result:

ok 10000 tokens

Test #2:

score: 0
Accepted
time: 123ms
memory: 92612kb

input:

2000 1000 10000
zzqzqqqqqzqqqqzqqqqzqzqzzzqqzqqqzzqzzqqqqqqqqqqqzzqzqqqzzqqzzqzqzzzqqzqqzzzzzzqzzzqq...

output:

0
3
3
1
0
2
2
2
1
0
1
0
0
0
1
0
2
0
6
1
0
1
1
0
2
1
1
1
2
4
0
1
3
2
1
0
1
2
0
0
0
1
1
0
1
1
0
4
0
3
...

result:

ok 10000 tokens

Subtask #2:

score: 24
Accepted

Test #3:

score: 24
Accepted
time: 523ms
memory: 124936kb

input:

2000 2000 1000000
gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg...

output:

1146
541
203
322
618
166
345
138
520
206
1031
667
741
921
361
1110
1057
372
899
209
491
69
93
639
14...

result:

ok 1000000 tokens

Test #4:

score: 0
Accepted
time: 486ms
memory: 124932kb

input:

2000 2000 1000000
svsvsvvsvssssvsvvvvssvvvssvsvsvssssvvsvvvsvvsssvssssvssvvsvvvssssssvsvvvvsssvvvsss...

output:

2
0
2
1
2
0
0
1
3
1
0
0
0
1
0
1
0
1
0
6
1
2
2
1
3
5
0
0
1
1
0
0
2
1
1
3
1
0
0
2
1
0
0
0
0
0
1
0
5
0
...

result:

ok 1000000 tokens

Test #5:

score: 0
Accepted
time: 530ms
memory: 124928kb

input:

2000 2000 1000000
qqqqqqqqqqqqqqqqcqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq...

output:

327
50
54
421
87
4
189
135
200
214
55
578
82
72
335
52
45
110
521
267
123
21
293
105
105
479
85
69
1...

result:

ok 1000000 tokens

Test #6:

score: 0
Accepted
time: 387ms
memory: 124932kb

input:

2000 2000 1000000
ssssssssssssssssssssssssssgsssssssssssssssssssssssssssssssssssssssssssssssssssssss...

output:

187
336
26
367
487
65
159
30
12
275
628
200
252
742
362
7
316
232
26
82
607
158
56
444
155
262
1
106...

result:

ok 1000000 tokens

Test #7:

score: 0
Accepted
time: 543ms
memory: 124932kb

input:

2000 2000 1000000
hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh...

output:

1281
105
890
1087
24
179
172
588
260
206
238
255
150
346
484
224
369
293
15
275
299
125
19
406
1146
...

result:

ok 1000000 tokens

Test #8:

score: 0
Accepted
time: 385ms
memory: 124932kb

input:

2000 2000 1000000
cschgfyhvrlhmuchmcssqmxypkfkmkrfwpivfljvlascqlphvlbmjnztypqeoyevqecixdhricknhdrero...

output:

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 1000000 tokens

Test #9:

score: 0
Accepted
time: 479ms
memory: 124932kb

input:

2000 2000 1000000
cwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcwcw...

output:

0
0
0
0
118
0
0
0
0
0
0
0
0
0
0
0
0
0
178
0
0
0
297
0
0
0
0
0
0
63
0
0
0
115
0
0
0
699
955
0
325
0
0...

result:

ok 1000000 tokens

Subtask #3:

score: 22
Accepted

Test #10:

score: 22
Accepted
time: 499ms
memory: 124936kb

input:

2000 2000 1000000
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii...

output:

1182
916
1440
420
469
1353
818
143
458
743
25
1414
878
23
284
453
324
1652
10
556
276
448
1143
916
1...

result:

ok 1000000 tokens

Test #11:

score: 0
Accepted
time: 601ms
memory: 124932kb

input:

2000 2000 1000000
ddddoddoodoodooddodododdodododdoooddodddddoodoodddddoodddodooddoddooooodddooodddoo...

output:

4
1
1
1
2
0
0
0
4
2
1
1
3
0
0
0
1
4
1
1
0
0
0
2
1
2
1
0
2
0
2
0
2
0
4
4
1
1
0
0
2
0
5
2
0
1
2
1
0
0
...

result:

ok 1000000 tokens

Test #12:

score: 0
Accepted
time: 496ms
memory: 124932kb

input:

2000 2000 1000000
dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd...

output:

180
74
19
380
126
169
75
17
53
352
123
150
258
103
65
17
87
109
11
164
407
143
241
407
214
256
84
22...

result:

ok 1000000 tokens

Test #13:

score: 0
Accepted
time: 550ms
memory: 124936kb

input:

2000 2000 1000000
gggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggggg...

output:

36
41
642
9
356
1100
529
595
2
299
253
559
761
245
494
259
43
234
430
885
449
225
404
211
213
32
38
...

result:

ok 1000000 tokens

Test #14:

score: 0
Accepted
time: 395ms
memory: 124932kb

input:

2000 2000 1000000
dddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd...

output:

905
292
231
537
281
229
247
240
1460
110
261
530
378
569
206
163
1185
128
983
117
296
79
123
3
53
81...

result:

ok 1000000 tokens

Test #15:

score: 0
Accepted
time: 313ms
memory: 124936kb

input:

2000 2000 1000000
nvmqmtwqkbpisvkrhgehqvohvizhldbhyiamavjuipxwxeqcqiqwcrjjlxeuvgzpgfwtcdgpymkptfemtv...

output:

0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
...

result:

ok 1000000 tokens

Test #16:

score: 0
Accepted
time: 408ms
memory: 124932kb

input:

2000 2000 1000000
tctctctctctctctctctctctctctctctctctctctctctctctctctctctctctctctctctctctctctctctctc...

output:

0
0
0
0
0
0
0
0
0
0
1
0
2
0
0
0
0
0
0
0
0
0
0
0
0
0
0
344
0
0
0
0
0
0
0
0
0
0
0
1
0
0
546
0
0
0
1
1
...

result:

ok 1000000 tokens

Subtask #4:

score: 43
Accepted

Test #17:

score: 43
Accepted
time: 267ms
memory: 91624kb

input:

1000 2000 1000000
yzyzzyaazyyzzaaayzzayyyaaayyazayyzzyazzyazayzayzyzzayyzyzzayzazzyzzayzaazazaaayzyy...

output:

2
0
2
1
1
0
1
0
0
1
0
1
0
0
0
1
1
0
0
0
0
1
0
0
0
1
1
0
0
0
1
0
2
0
1
0
0
0
0
2
1
2
0
1
0
0
0
2
0
0
...

result:

ok 1000000 tokens

Test #18:

score: 0
Accepted
time: 434ms
memory: 124932kb

input:

2000 2000 1000000
jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj...

output:

255
79
826
62
931
351
68
1020
265
697
2
1101
779
606
176
1568
696
615
106
596
185
311
65
397
816
25
...

result:

ok 1000000 tokens

Test #19:

score: 0
Accepted
time: 436ms
memory: 124928kb

input:

2000 2000 1000000
yyyvvyyyvyyyyvvvyyvyyyyvyyyyyyvvyvvyyyyyvvyyvvyvyvyvvvyyyvyvyvyyvyyyyvyyyvyyyvvyvy...

output:

3
0
0
0
0
1
0
0
0
0
1
2
0
2
1
0
0
0
4
2
0
0
3
1
1
2
3
1
0
1
1
0
0
3
0
0
0
2
0
0
1
0
1
0
0
3
2
0
0
1
...

result:

ok 1000000 tokens

Test #20:

score: 0
Accepted
time: 448ms
memory: 124932kb

input:

2000 2000 1000000
jjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjjj...

output:

128
57
641
99
820
2
155
264
232
511
552
36
506
522
31
528
574
506
638
59
127
22
103
53
30
56
14
18
1...

result:

ok 1000000 tokens

Test #21:

score: 0
Accepted
time: 411ms
memory: 124936kb

input:

2000 2000 1000000
ssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss...

output:

1
33
165
12
417
104
452
86
315
401
295
141
60
41
76
115
118
150
489
69
46
196
373
109
142
34
115
481...

result:

ok 1000000 tokens

Test #22:

score: 0
Accepted
time: 397ms
memory: 124932kb

input:

2000 2000 1000000
iiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii...

output:

371
247
218
9
492
569
21
454
121
168
207
251
176
236
333
23
138
1501
385
306
342
101
286
204
168
99
...

result:

ok 1000000 tokens

Test #23:

score: 0
Accepted
time: 324ms
memory: 124928kb

input:

2000 2000 1000000
ccbxyakkmwxjxctespteblasatcayufpdpqvjjbmatywntdpcnhmwabgpmsyuxvqjtgxutglopldstpcmq...

output:

0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
...

result:

ok 1000000 tokens

Test #24:

score: 0
Accepted
time: 407ms
memory: 124932kb

input:

2000 2000 1000000
mfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmfmf...

output:

0
0
0
0
2
0
0
1
0
1
0
0
0
0
0
0
2
1
0
361
0
0
0
1
0
0
0
0
1
1
0
1
0
0
1
0
0
0
0
0
323
0
0
0
1
0
0
1
...

result:

ok 1000000 tokens