#include <bits/stdc++.h>
using namespace std;
const int B = 300;
int dp[100010][B+1];
int st[100010][B+1];
vector<int> adj[100010];
int idx[100010];
int chk[100010];
int dp2[100010];
int main() {
int n, m, q;
cin >> n >> m >> q;
for (int i=0; i<m; i++) {
int u, v;
cin >> u >> v;
adj[v].push_back(u);
}
memset(dp, -1, sizeof(dp));
for (int i=1; i<=n; i++) {
for (auto &j : adj[i]) {
idx[j] = 0;
}
for (int j=0; j<B; j++) {
int mx = -1, pv = -1;
for (auto &k : adj[i]) {
while (chk[st[k][idx[k]]]) idx[k] ++;
if (mx < dp[k][idx[k]]) {
mx = dp[k][idx[k]];
pv = k;
}
}
if (pv == -1) {
dp[i][j] = 0;
st[i][j] = i;
break;
}
dp[i][j] = mx + 1;
st[i][j] = st[pv][idx[pv]];
chk[st[i][j]] = 1;
idx[pv] ++;
}
for (int j=0; j<B; j++) {
chk[st[i][j]] = 0;
}
}
while (q --) {
int x;
cin >> x;
int k;
cin >> k;
vector<int> num(k);
for (int i=0; i<k; i++) {
cin >> num[i];
chk[num[i]] = 1;
}
if (k < B) {
for (int i=0; i<B; i++) {
if (!chk[st[x][i]]) {
cout << dp[x][i] << '\n';
break;
}
}
}
else {
for (int i=1; i<=x; i++) {
if (!chk[i]) dp2[i] = 0;
else dp2[i] = -1;
for (auto &j : adj[i]) {
if (dp2[j] != -1)
dp2[i] = max(dp2[i], dp2[j] + 1);
}
}
cout << dp2[x] << '\n';
}
for (int i=0; i<k; i++) {
chk[num[i]] = 0;
}
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
25 ms |
122196 KB |
Output is correct |
2 |
Correct |
22 ms |
122372 KB |
Output is correct |
3 |
Correct |
21 ms |
122452 KB |
Output is correct |
4 |
Correct |
21 ms |
122460 KB |
Output is correct |
5 |
Correct |
24 ms |
124348 KB |
Output is correct |
6 |
Correct |
23 ms |
122872 KB |
Output is correct |
7 |
Correct |
23 ms |
122884 KB |
Output is correct |
8 |
Correct |
26 ms |
124508 KB |
Output is correct |
9 |
Correct |
26 ms |
124508 KB |
Output is correct |
10 |
Correct |
24 ms |
124508 KB |
Output is correct |
11 |
Correct |
26 ms |
124320 KB |
Output is correct |
12 |
Correct |
24 ms |
124392 KB |
Output is correct |
13 |
Correct |
24 ms |
124292 KB |
Output is correct |
14 |
Correct |
27 ms |
124500 KB |
Output is correct |
15 |
Correct |
24 ms |
122748 KB |
Output is correct |
16 |
Correct |
24 ms |
122716 KB |
Output is correct |
17 |
Correct |
24 ms |
124508 KB |
Output is correct |
18 |
Correct |
24 ms |
124500 KB |
Output is correct |
19 |
Correct |
25 ms |
124320 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
25 ms |
122196 KB |
Output is correct |
2 |
Correct |
22 ms |
122372 KB |
Output is correct |
3 |
Correct |
21 ms |
122452 KB |
Output is correct |
4 |
Correct |
21 ms |
122460 KB |
Output is correct |
5 |
Correct |
24 ms |
124348 KB |
Output is correct |
6 |
Correct |
23 ms |
122872 KB |
Output is correct |
7 |
Correct |
23 ms |
122884 KB |
Output is correct |
8 |
Correct |
26 ms |
124508 KB |
Output is correct |
9 |
Correct |
26 ms |
124508 KB |
Output is correct |
10 |
Correct |
24 ms |
124508 KB |
Output is correct |
11 |
Correct |
26 ms |
124320 KB |
Output is correct |
12 |
Correct |
24 ms |
124392 KB |
Output is correct |
13 |
Correct |
24 ms |
124292 KB |
Output is correct |
14 |
Correct |
27 ms |
124500 KB |
Output is correct |
15 |
Correct |
24 ms |
122748 KB |
Output is correct |
16 |
Correct |
24 ms |
122716 KB |
Output is correct |
17 |
Correct |
24 ms |
124508 KB |
Output is correct |
18 |
Correct |
24 ms |
124500 KB |
Output is correct |
19 |
Correct |
25 ms |
124320 KB |
Output is correct |
20 |
Correct |
308 ms |
126788 KB |
Output is correct |
21 |
Correct |
258 ms |
126916 KB |
Output is correct |
22 |
Correct |
286 ms |
127028 KB |
Output is correct |
23 |
Correct |
280 ms |
126764 KB |
Output is correct |
24 |
Correct |
469 ms |
244028 KB |
Output is correct |
25 |
Correct |
479 ms |
244008 KB |
Output is correct |
26 |
Correct |
496 ms |
243892 KB |
Output is correct |
27 |
Correct |
424 ms |
244308 KB |
Output is correct |
28 |
Correct |
446 ms |
244444 KB |
Output is correct |
29 |
Correct |
413 ms |
244344 KB |
Output is correct |
30 |
Correct |
412 ms |
244328 KB |
Output is correct |
31 |
Correct |
433 ms |
244308 KB |
Output is correct |
32 |
Correct |
422 ms |
244480 KB |
Output is correct |
33 |
Correct |
377 ms |
243800 KB |
Output is correct |
34 |
Correct |
379 ms |
244052 KB |
Output is correct |
35 |
Correct |
379 ms |
243796 KB |
Output is correct |
36 |
Correct |
413 ms |
244052 KB |
Output is correct |
37 |
Correct |
445 ms |
243996 KB |
Output is correct |
38 |
Correct |
422 ms |
243956 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
25 ms |
122196 KB |
Output is correct |
2 |
Correct |
22 ms |
122372 KB |
Output is correct |
3 |
Correct |
21 ms |
122452 KB |
Output is correct |
4 |
Correct |
21 ms |
122460 KB |
Output is correct |
5 |
Correct |
24 ms |
124348 KB |
Output is correct |
6 |
Correct |
23 ms |
122872 KB |
Output is correct |
7 |
Correct |
23 ms |
122884 KB |
Output is correct |
8 |
Correct |
26 ms |
124508 KB |
Output is correct |
9 |
Correct |
26 ms |
124508 KB |
Output is correct |
10 |
Correct |
24 ms |
124508 KB |
Output is correct |
11 |
Correct |
26 ms |
124320 KB |
Output is correct |
12 |
Correct |
24 ms |
124392 KB |
Output is correct |
13 |
Correct |
24 ms |
124292 KB |
Output is correct |
14 |
Correct |
27 ms |
124500 KB |
Output is correct |
15 |
Correct |
24 ms |
122748 KB |
Output is correct |
16 |
Correct |
24 ms |
122716 KB |
Output is correct |
17 |
Correct |
24 ms |
124508 KB |
Output is correct |
18 |
Correct |
24 ms |
124500 KB |
Output is correct |
19 |
Correct |
25 ms |
124320 KB |
Output is correct |
20 |
Correct |
308 ms |
126788 KB |
Output is correct |
21 |
Correct |
258 ms |
126916 KB |
Output is correct |
22 |
Correct |
286 ms |
127028 KB |
Output is correct |
23 |
Correct |
280 ms |
126764 KB |
Output is correct |
24 |
Correct |
469 ms |
244028 KB |
Output is correct |
25 |
Correct |
479 ms |
244008 KB |
Output is correct |
26 |
Correct |
496 ms |
243892 KB |
Output is correct |
27 |
Correct |
424 ms |
244308 KB |
Output is correct |
28 |
Correct |
446 ms |
244444 KB |
Output is correct |
29 |
Correct |
413 ms |
244344 KB |
Output is correct |
30 |
Correct |
412 ms |
244328 KB |
Output is correct |
31 |
Correct |
433 ms |
244308 KB |
Output is correct |
32 |
Correct |
422 ms |
244480 KB |
Output is correct |
33 |
Correct |
377 ms |
243800 KB |
Output is correct |
34 |
Correct |
379 ms |
244052 KB |
Output is correct |
35 |
Correct |
379 ms |
243796 KB |
Output is correct |
36 |
Correct |
413 ms |
244052 KB |
Output is correct |
37 |
Correct |
445 ms |
243996 KB |
Output is correct |
38 |
Correct |
422 ms |
243956 KB |
Output is correct |
39 |
Correct |
660 ms |
244564 KB |
Output is correct |
40 |
Correct |
498 ms |
243992 KB |
Output is correct |
41 |
Correct |
514 ms |
243788 KB |
Output is correct |
42 |
Correct |
537 ms |
244356 KB |
Output is correct |
43 |
Correct |
491 ms |
244052 KB |
Output is correct |
44 |
Correct |
412 ms |
127568 KB |
Output is correct |
45 |
Correct |
297 ms |
127720 KB |
Output is correct |
46 |
Correct |
264 ms |
127572 KB |
Output is correct |
47 |
Correct |
307 ms |
127392 KB |
Output is correct |
48 |
Correct |
281 ms |
127360 KB |
Output is correct |
49 |
Correct |
621 ms |
246416 KB |
Output is correct |
50 |
Correct |
411 ms |
245068 KB |
Output is correct |
51 |
Correct |
425 ms |
128528 KB |
Output is correct |
52 |
Correct |
260 ms |
127312 KB |
Output is correct |
53 |
Correct |
575 ms |
246096 KB |
Output is correct |
54 |
Correct |
648 ms |
245696 KB |
Output is correct |
55 |
Correct |
415 ms |
244628 KB |
Output is correct |
56 |
Correct |
447 ms |
244648 KB |
Output is correct |
57 |
Correct |
414 ms |
128444 KB |
Output is correct |
58 |
Correct |
424 ms |
128380 KB |
Output is correct |
59 |
Correct |
296 ms |
127316 KB |
Output is correct |
60 |
Correct |
294 ms |
127512 KB |
Output is correct |
61 |
Correct |
461 ms |
245328 KB |
Output is correct |
62 |
Correct |
467 ms |
244940 KB |
Output is correct |
63 |
Correct |
508 ms |
244844 KB |
Output is correct |
64 |
Correct |
567 ms |
245328 KB |
Output is correct |
65 |
Correct |
555 ms |
244928 KB |
Output is correct |
66 |
Correct |
599 ms |
244948 KB |
Output is correct |
67 |
Correct |
410 ms |
245012 KB |
Output is correct |
68 |
Correct |
424 ms |
245392 KB |
Output is correct |
69 |
Correct |
445 ms |
244612 KB |
Output is correct |
70 |
Correct |
443 ms |
245400 KB |
Output is correct |
71 |
Correct |
491 ms |
245080 KB |
Output is correct |
72 |
Correct |
496 ms |
244928 KB |
Output is correct |
73 |
Correct |
485 ms |
245504 KB |
Output is correct |
74 |
Correct |
452 ms |
244984 KB |
Output is correct |
75 |
Correct |
456 ms |
244952 KB |
Output is correct |
76 |
Correct |
630 ms |
246608 KB |
Output is correct |
77 |
Correct |
459 ms |
245424 KB |
Output is correct |
78 |
Correct |
458 ms |
245616 KB |
Output is correct |
79 |
Correct |
425 ms |
128416 KB |
Output is correct |
80 |
Correct |
260 ms |
127400 KB |
Output is correct |
81 |
Correct |
256 ms |
127264 KB |
Output is correct |
82 |
Correct |
594 ms |
246756 KB |
Output is correct |
83 |
Correct |
661 ms |
246512 KB |
Output is correct |
84 |
Correct |
431 ms |
245300 KB |
Output is correct |
85 |
Correct |
475 ms |
245328 KB |
Output is correct |
86 |
Correct |
412 ms |
245600 KB |
Output is correct |
87 |
Correct |
519 ms |
245664 KB |
Output is correct |
88 |
Correct |
421 ms |
128444 KB |
Output is correct |
89 |
Correct |
440 ms |
128592 KB |
Output is correct |
90 |
Correct |
279 ms |
127568 KB |
Output is correct |
91 |
Correct |
268 ms |
127568 KB |
Output is correct |
92 |
Correct |
267 ms |
127272 KB |
Output is correct |
93 |
Correct |
259 ms |
127312 KB |
Output is correct |
94 |
Correct |
571 ms |
245984 KB |
Output is correct |
95 |
Correct |
575 ms |
246020 KB |
Output is correct |
96 |
Correct |
416 ms |
245060 KB |
Output is correct |
97 |
Correct |
374 ms |
244820 KB |
Output is correct |
98 |
Correct |
411 ms |
245112 KB |
Output is correct |
99 |
Correct |
387 ms |
245104 KB |
Output is correct |
100 |
Correct |
443 ms |
128648 KB |
Output is correct |
101 |
Correct |
442 ms |
128708 KB |
Output is correct |
102 |
Correct |
306 ms |
127564 KB |
Output is correct |
103 |
Correct |
291 ms |
127512 KB |
Output is correct |
104 |
Correct |
284 ms |
127060 KB |
Output is correct |
105 |
Correct |
273 ms |
127248 KB |
Output is correct |
106 |
Correct |
594 ms |
246248 KB |
Output is correct |
107 |
Correct |
645 ms |
246064 KB |
Output is correct |
108 |
Correct |
413 ms |
245080 KB |
Output is correct |
109 |
Correct |
439 ms |
245012 KB |
Output is correct |
110 |
Correct |
412 ms |
245276 KB |
Output is correct |
111 |
Correct |
457 ms |
245116 KB |
Output is correct |
112 |
Correct |
430 ms |
128684 KB |
Output is correct |
113 |
Correct |
450 ms |
128524 KB |
Output is correct |
114 |
Correct |
267 ms |
127460 KB |
Output is correct |
115 |
Correct |
269 ms |
127528 KB |
Output is correct |
116 |
Correct |
251 ms |
127288 KB |
Output is correct |
117 |
Correct |
251 ms |
127164 KB |
Output is correct |
118 |
Correct |
452 ms |
245200 KB |
Output is correct |
119 |
Correct |
412 ms |
244820 KB |
Output is correct |
120 |
Correct |
455 ms |
244744 KB |
Output is correct |
121 |
Correct |
440 ms |
245072 KB |
Output is correct |
122 |
Correct |
418 ms |
244608 KB |
Output is correct |
123 |
Correct |
465 ms |
244852 KB |
Output is correct |
124 |
Correct |
422 ms |
244976 KB |
Output is correct |
125 |
Correct |
415 ms |
244884 KB |
Output is correct |
126 |
Correct |
441 ms |
244564 KB |
Output is correct |