#include <bits/stdc++.h>
using namespace std;
#define pb push_back
const int mxN = (int)2e5+2;
const int B = 100;
int n, m, Q, a, b;
vector<int> adj[mxN], cur;
vector<array<int,2>> node[mxN];
int bad[mxN], vis[mxN], dis[mxN], dp[mxN];
int main() {
cin >> n >> m >> Q;
for(int i = 0; i < m; i++)
cin >> a >> b, adj[b].pb(a);
for(int i = 1; i <= n; i++, cur.clear()){
for(auto j : adj[i]){
for(auto [w,u] : node[j]){
if(vis[u]==i) dis[u] = max(dis[u], w+1);
else vis[u]=i, dis[u] = w+1, cur.pb(u);
}
}
for(auto u : cur) node[i].pb({dis[u],u});
node[i].pb({0,i}); sort(rbegin(node[i]),rend(node[i]));
if(node[i].size()>B) node[i].erase(begin(node[i])+B,end(node[i]));
}
for(int q = 1; q <= Q; q++){
int t, k, x, ans=-1; cin >> t >> k;
for(int i = 0; i < k; i++) cin >> x, bad[x]=q;
if(k<B){
for(auto [w,u] : node[t]){
if(bad[u]!=q){ ans=w; break; }
}
}
else{
fill(dp, dp+n+1, -1);
for(int i = 1; i <= t; i++){
if(bad[i]!=q) dp[i]=0;
for(auto j : adj[i]) if(dp[j]!=-1)
dp[i] = max(dp[i],dp[j]+1);
}
ans = dp[t];
}
cout << ans << "\n";
}
}
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
9684 KB |
Output is correct |
2 |
Correct |
5 ms |
9684 KB |
Output is correct |
3 |
Correct |
5 ms |
9684 KB |
Output is correct |
4 |
Correct |
5 ms |
9700 KB |
Output is correct |
5 |
Correct |
7 ms |
10104 KB |
Output is correct |
6 |
Correct |
7 ms |
10196 KB |
Output is correct |
7 |
Correct |
8 ms |
10196 KB |
Output is correct |
8 |
Correct |
9 ms |
10728 KB |
Output is correct |
9 |
Correct |
9 ms |
10648 KB |
Output is correct |
10 |
Correct |
8 ms |
10652 KB |
Output is correct |
11 |
Correct |
8 ms |
10708 KB |
Output is correct |
12 |
Correct |
9 ms |
10524 KB |
Output is correct |
13 |
Correct |
8 ms |
10580 KB |
Output is correct |
14 |
Correct |
12 ms |
10364 KB |
Output is correct |
15 |
Correct |
12 ms |
10356 KB |
Output is correct |
16 |
Correct |
10 ms |
10356 KB |
Output is correct |
17 |
Correct |
9 ms |
10484 KB |
Output is correct |
18 |
Correct |
8 ms |
10324 KB |
Output is correct |
19 |
Correct |
8 ms |
10452 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
9684 KB |
Output is correct |
2 |
Correct |
5 ms |
9684 KB |
Output is correct |
3 |
Correct |
5 ms |
9684 KB |
Output is correct |
4 |
Correct |
5 ms |
9700 KB |
Output is correct |
5 |
Correct |
7 ms |
10104 KB |
Output is correct |
6 |
Correct |
7 ms |
10196 KB |
Output is correct |
7 |
Correct |
8 ms |
10196 KB |
Output is correct |
8 |
Correct |
9 ms |
10728 KB |
Output is correct |
9 |
Correct |
9 ms |
10648 KB |
Output is correct |
10 |
Correct |
8 ms |
10652 KB |
Output is correct |
11 |
Correct |
8 ms |
10708 KB |
Output is correct |
12 |
Correct |
9 ms |
10524 KB |
Output is correct |
13 |
Correct |
8 ms |
10580 KB |
Output is correct |
14 |
Correct |
12 ms |
10364 KB |
Output is correct |
15 |
Correct |
12 ms |
10356 KB |
Output is correct |
16 |
Correct |
10 ms |
10356 KB |
Output is correct |
17 |
Correct |
9 ms |
10484 KB |
Output is correct |
18 |
Correct |
8 ms |
10324 KB |
Output is correct |
19 |
Correct |
8 ms |
10452 KB |
Output is correct |
20 |
Correct |
93 ms |
13312 KB |
Output is correct |
21 |
Correct |
97 ms |
13332 KB |
Output is correct |
22 |
Correct |
102 ms |
13260 KB |
Output is correct |
23 |
Correct |
103 ms |
13332 KB |
Output is correct |
24 |
Correct |
643 ms |
120900 KB |
Output is correct |
25 |
Correct |
715 ms |
117324 KB |
Output is correct |
26 |
Correct |
638 ms |
116812 KB |
Output is correct |
27 |
Correct |
419 ms |
118084 KB |
Output is correct |
28 |
Correct |
418 ms |
117968 KB |
Output is correct |
29 |
Correct |
441 ms |
117824 KB |
Output is correct |
30 |
Correct |
426 ms |
117940 KB |
Output is correct |
31 |
Correct |
555 ms |
135916 KB |
Output is correct |
32 |
Correct |
418 ms |
117716 KB |
Output is correct |
33 |
Correct |
382 ms |
82696 KB |
Output is correct |
34 |
Correct |
577 ms |
110156 KB |
Output is correct |
35 |
Correct |
377 ms |
82320 KB |
Output is correct |
36 |
Correct |
411 ms |
99504 KB |
Output is correct |
37 |
Correct |
620 ms |
121224 KB |
Output is correct |
38 |
Correct |
419 ms |
99428 KB |
Output is correct |
# |
Verdict |
Execution time |
Memory |
Grader output |
1 |
Correct |
6 ms |
9684 KB |
Output is correct |
2 |
Correct |
5 ms |
9684 KB |
Output is correct |
3 |
Correct |
5 ms |
9684 KB |
Output is correct |
4 |
Correct |
5 ms |
9700 KB |
Output is correct |
5 |
Correct |
7 ms |
10104 KB |
Output is correct |
6 |
Correct |
7 ms |
10196 KB |
Output is correct |
7 |
Correct |
8 ms |
10196 KB |
Output is correct |
8 |
Correct |
9 ms |
10728 KB |
Output is correct |
9 |
Correct |
9 ms |
10648 KB |
Output is correct |
10 |
Correct |
8 ms |
10652 KB |
Output is correct |
11 |
Correct |
8 ms |
10708 KB |
Output is correct |
12 |
Correct |
9 ms |
10524 KB |
Output is correct |
13 |
Correct |
8 ms |
10580 KB |
Output is correct |
14 |
Correct |
12 ms |
10364 KB |
Output is correct |
15 |
Correct |
12 ms |
10356 KB |
Output is correct |
16 |
Correct |
10 ms |
10356 KB |
Output is correct |
17 |
Correct |
9 ms |
10484 KB |
Output is correct |
18 |
Correct |
8 ms |
10324 KB |
Output is correct |
19 |
Correct |
8 ms |
10452 KB |
Output is correct |
20 |
Correct |
93 ms |
13312 KB |
Output is correct |
21 |
Correct |
97 ms |
13332 KB |
Output is correct |
22 |
Correct |
102 ms |
13260 KB |
Output is correct |
23 |
Correct |
103 ms |
13332 KB |
Output is correct |
24 |
Correct |
643 ms |
120900 KB |
Output is correct |
25 |
Correct |
715 ms |
117324 KB |
Output is correct |
26 |
Correct |
638 ms |
116812 KB |
Output is correct |
27 |
Correct |
419 ms |
118084 KB |
Output is correct |
28 |
Correct |
418 ms |
117968 KB |
Output is correct |
29 |
Correct |
441 ms |
117824 KB |
Output is correct |
30 |
Correct |
426 ms |
117940 KB |
Output is correct |
31 |
Correct |
555 ms |
135916 KB |
Output is correct |
32 |
Correct |
418 ms |
117716 KB |
Output is correct |
33 |
Correct |
382 ms |
82696 KB |
Output is correct |
34 |
Correct |
577 ms |
110156 KB |
Output is correct |
35 |
Correct |
377 ms |
82320 KB |
Output is correct |
36 |
Correct |
411 ms |
99504 KB |
Output is correct |
37 |
Correct |
620 ms |
121224 KB |
Output is correct |
38 |
Correct |
419 ms |
99428 KB |
Output is correct |
39 |
Correct |
877 ms |
123320 KB |
Output is correct |
40 |
Correct |
652 ms |
118700 KB |
Output is correct |
41 |
Correct |
912 ms |
120048 KB |
Output is correct |
42 |
Correct |
705 ms |
119312 KB |
Output is correct |
43 |
Correct |
645 ms |
121068 KB |
Output is correct |
44 |
Correct |
280 ms |
14628 KB |
Output is correct |
45 |
Correct |
119 ms |
13824 KB |
Output is correct |
46 |
Correct |
161 ms |
13776 KB |
Output is correct |
47 |
Correct |
125 ms |
13516 KB |
Output is correct |
48 |
Correct |
101 ms |
13364 KB |
Output is correct |
49 |
Correct |
571 ms |
118432 KB |
Output is correct |
50 |
Correct |
699 ms |
117488 KB |
Output is correct |
51 |
Correct |
265 ms |
14452 KB |
Output is correct |
52 |
Correct |
252 ms |
13552 KB |
Output is correct |
53 |
Correct |
558 ms |
99532 KB |
Output is correct |
54 |
Correct |
752 ms |
120492 KB |
Output is correct |
55 |
Correct |
671 ms |
98924 KB |
Output is correct |
56 |
Correct |
859 ms |
123592 KB |
Output is correct |
57 |
Correct |
236 ms |
14408 KB |
Output is correct |
58 |
Correct |
254 ms |
14476 KB |
Output is correct |
59 |
Correct |
255 ms |
13560 KB |
Output is correct |
60 |
Correct |
252 ms |
13660 KB |
Output is correct |
61 |
Correct |
466 ms |
117652 KB |
Output is correct |
62 |
Correct |
469 ms |
99288 KB |
Output is correct |
63 |
Correct |
641 ms |
119192 KB |
Output is correct |
64 |
Correct |
566 ms |
117564 KB |
Output is correct |
65 |
Correct |
568 ms |
99020 KB |
Output is correct |
66 |
Correct |
786 ms |
121068 KB |
Output is correct |
67 |
Correct |
634 ms |
117580 KB |
Output is correct |
68 |
Correct |
677 ms |
99272 KB |
Output is correct |
69 |
Correct |
867 ms |
121220 KB |
Output is correct |
70 |
Correct |
440 ms |
117724 KB |
Output is correct |
71 |
Correct |
421 ms |
99276 KB |
Output is correct |
72 |
Correct |
605 ms |
121164 KB |
Output is correct |
73 |
Correct |
432 ms |
117776 KB |
Output is correct |
74 |
Correct |
432 ms |
99244 KB |
Output is correct |
75 |
Correct |
624 ms |
123340 KB |
Output is correct |
76 |
Correct |
613 ms |
119176 KB |
Output is correct |
77 |
Correct |
646 ms |
118276 KB |
Output is correct |
78 |
Correct |
434 ms |
118308 KB |
Output is correct |
79 |
Correct |
247 ms |
14560 KB |
Output is correct |
80 |
Correct |
156 ms |
13748 KB |
Output is correct |
81 |
Correct |
100 ms |
13260 KB |
Output is correct |
82 |
Correct |
605 ms |
119024 KB |
Output is correct |
83 |
Correct |
776 ms |
140356 KB |
Output is correct |
84 |
Correct |
643 ms |
118192 KB |
Output is correct |
85 |
Correct |
827 ms |
150860 KB |
Output is correct |
86 |
Correct |
436 ms |
118140 KB |
Output is correct |
87 |
Correct |
593 ms |
139388 KB |
Output is correct |
88 |
Correct |
249 ms |
14704 KB |
Output is correct |
89 |
Correct |
253 ms |
14584 KB |
Output is correct |
90 |
Correct |
164 ms |
13764 KB |
Output is correct |
91 |
Correct |
167 ms |
13736 KB |
Output is correct |
92 |
Correct |
97 ms |
13312 KB |
Output is correct |
93 |
Correct |
95 ms |
13308 KB |
Output is correct |
94 |
Correct |
556 ms |
83964 KB |
Output is correct |
95 |
Correct |
796 ms |
118028 KB |
Output is correct |
96 |
Correct |
592 ms |
82932 KB |
Output is correct |
97 |
Correct |
828 ms |
118196 KB |
Output is correct |
98 |
Correct |
437 ms |
83296 KB |
Output is correct |
99 |
Correct |
619 ms |
114056 KB |
Output is correct |
100 |
Correct |
244 ms |
14672 KB |
Output is correct |
101 |
Correct |
271 ms |
14672 KB |
Output is correct |
102 |
Correct |
158 ms |
13784 KB |
Output is correct |
103 |
Correct |
144 ms |
13768 KB |
Output is correct |
104 |
Correct |
102 ms |
13324 KB |
Output is correct |
105 |
Correct |
106 ms |
13392 KB |
Output is correct |
106 |
Correct |
577 ms |
100360 KB |
Output is correct |
107 |
Correct |
787 ms |
126624 KB |
Output is correct |
108 |
Correct |
703 ms |
100076 KB |
Output is correct |
109 |
Correct |
829 ms |
117540 KB |
Output is correct |
110 |
Correct |
469 ms |
100076 KB |
Output is correct |
111 |
Correct |
619 ms |
122844 KB |
Output is correct |
112 |
Correct |
245 ms |
14668 KB |
Output is correct |
113 |
Correct |
252 ms |
14676 KB |
Output is correct |
114 |
Correct |
157 ms |
13700 KB |
Output is correct |
115 |
Correct |
157 ms |
13616 KB |
Output is correct |
116 |
Correct |
103 ms |
13280 KB |
Output is correct |
117 |
Correct |
97 ms |
13280 KB |
Output is correct |
118 |
Correct |
452 ms |
117244 KB |
Output is correct |
119 |
Correct |
414 ms |
98988 KB |
Output is correct |
120 |
Correct |
641 ms |
126288 KB |
Output is correct |
121 |
Correct |
430 ms |
117192 KB |
Output is correct |
122 |
Correct |
437 ms |
98656 KB |
Output is correct |
123 |
Correct |
666 ms |
125528 KB |
Output is correct |
124 |
Correct |
422 ms |
117096 KB |
Output is correct |
125 |
Correct |
420 ms |
99072 KB |
Output is correct |
126 |
Correct |
613 ms |
122156 KB |
Output is correct |