oj.uz

Submission #455215

# Submission time Handle Problem Language Result Execution time Memory
455215 2021-08-05T17:09:49 Z czhang2718 Bitaro’s Party (JOI18_bitaro) C++14
100 / 100
 1365 ms 269328 KB 
#include "bits/stdc++.h"
using namespace std;

#define f first
#define s second
typedef pair<int, int> pii;
#define nl '\n'

const int B=300;
int n, q, m;
vector<int> adj[100001];
vector<int> radj[100001];
unordered_map<int, bool> C[100001];
pii best[100001][B+2];
int ind[100001];
int t[100001];
vector<int> batch[100001];
vector<int> sep;
int ans[100001];
int dp[100001];
int used[100001];

int main(){
  cin.tie(0)->sync_with_stdio(0);
  // freopen("input.txt", "r", stdin);
  // freopen("output.txt", "w", stdout);

  cin >> n >> m >> q;

  for(int i=1; i<=m; i++){
    int u, v; cin >> u >> v;
    adj[u].push_back(v);
    radj[v].push_back(u);
  }
  for(int i=1; i<=q; i++){
    int y;
    cin >> t[i] >> y;
    C[i].reserve(y);
    for(int j=1; j<=y; j++) {
      int c; cin >> c;
      C[i][c]=1;
    }
    if(y<=B) batch[t[i]].push_back(i);
    else sep.push_back(i);
  }

  for(int i=1; i<=n; i++){
    int j=1;
    for(int u:radj[i]) ind[u]=1;
    while(j<=B+1){
      pii use={-1, -1};
      for(int u:radj[i]){
        while(ind[u]<=B+1 && used[best[u][ind[u]].s]==i) ind[u]++;
        if(ind[u]>B+1 || !best[u][ind[u]].s) continue;
        use=max(use, best[u][ind[u]]);
      }
      if(use.f==-1) break;
      used[use.s]=i;
      best[i][j]={use.f+1, use.s};
      j++;
    }
    if(j<=B+1) best[i][j]={0, i};

    for(int j:batch[i]){
      int k=1;
      while(C[j].find(best[i][k].s)!=C[j].end()) k++;
      if(!best[i][k].s) ans[j]=-1;
      else ans[j]=best[i][k].f;
    }
  }

  for(int j:sep){
    ans[j]=(C[j].find(t[j])==C[j].end())-1;
    dp[t[j]]=0;
    for(int i=t[j]-1; i>=1; i--){
      dp[i]=-1;
      for(auto k:adj[i]) if(k<=t[j] && dp[k]!=-1) dp[i]=max(dp[i], dp[k]+1);
      if(C[j].find(i)==C[j].end()) ans[j]=max(ans[j], dp[i]);
    }
  }

  for(int i=1; i<=q; i++) cout << ans[i] << '\n';
}

// mp.find

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 12748 KB Output is correct
2 Correct 8 ms 12748 KB Output is correct
3 Correct 9 ms 12748 KB Output is correct
4 Correct 8 ms 12852 KB Output is correct
5 Correct 11 ms 15308 KB Output is correct
6 Correct 11 ms 15308 KB Output is correct
7 Correct 11 ms 15284 KB Output is correct
8 Correct 14 ms 15308 KB Output is correct
9 Correct 14 ms 15316 KB Output is correct
10 Correct 14 ms 15308 KB Output is correct
11 Correct 14 ms 15308 KB Output is correct
12 Correct 12 ms 15260 KB Output is correct
13 Correct 14 ms 15280 KB Output is correct
14 Correct 15 ms 15276 KB Output is correct
15 Correct 13 ms 15308 KB Output is correct
16 Correct 13 ms 15308 KB Output is correct
17 Correct 13 ms 15284 KB Output is correct
18 Correct 13 ms 15268 KB Output is correct
19 Correct 14 ms 15308 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 12748 KB Output is correct
2 Correct 8 ms 12748 KB Output is correct
3 Correct 9 ms 12748 KB Output is correct
4 Correct 8 ms 12852 KB Output is correct
5 Correct 11 ms 15308 KB Output is correct
6 Correct 11 ms 15308 KB Output is correct
7 Correct 11 ms 15284 KB Output is correct
8 Correct 14 ms 15308 KB Output is correct
9 Correct 14 ms 15316 KB Output is correct
10 Correct 14 ms 15308 KB Output is correct
11 Correct 14 ms 15308 KB Output is correct
12 Correct 12 ms 15260 KB Output is correct
13 Correct 14 ms 15280 KB Output is correct
14 Correct 15 ms 15276 KB Output is correct
15 Correct 13 ms 15308 KB Output is correct
16 Correct 13 ms 15308 KB Output is correct
17 Correct 13 ms 15284 KB Output is correct
18 Correct 13 ms 15268 KB Output is correct
19 Correct 14 ms 15308 KB Output is correct
20 Correct 477 ms 17836 KB Output is correct
21 Correct 479 ms 17700 KB Output is correct
22 Correct 471 ms 17944 KB Output is correct
23 Correct 495 ms 17780 KB Output is correct
24 Correct 739 ms 259944 KB Output is correct
25 Correct 761 ms 259864 KB Output is correct
26 Correct 754 ms 259828 KB Output is correct
27 Correct 752 ms 260804 KB Output is correct
28 Correct 784 ms 260928 KB Output is correct
29 Correct 755 ms 260828 KB Output is correct
30 Correct 741 ms 260076 KB Output is correct
31 Correct 799 ms 260292 KB Output is correct
32 Correct 769 ms 260152 KB Output is correct
33 Correct 582 ms 260404 KB Output is correct
34 Correct 543 ms 260772 KB Output is correct
35 Correct 573 ms 260564 KB Output is correct
36 Correct 673 ms 260932 KB Output is correct
37 Correct 736 ms 260704 KB Output is correct
38 Correct 696 ms 260748 KB Output is correct

Subtask #3
86.0 / 86.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 12748 KB Output is correct
2 Correct 8 ms 12748 KB Output is correct
3 Correct 9 ms 12748 KB Output is correct
4 Correct 8 ms 12852 KB Output is correct
5 Correct 11 ms 15308 KB Output is correct
6 Correct 11 ms 15308 KB Output is correct
7 Correct 11 ms 15284 KB Output is correct
8 Correct 14 ms 15308 KB Output is correct
9 Correct 14 ms 15316 KB Output is correct
10 Correct 14 ms 15308 KB Output is correct
11 Correct 14 ms 15308 KB Output is correct
12 Correct 12 ms 15260 KB Output is correct
13 Correct 14 ms 15280 KB Output is correct
14 Correct 15 ms 15276 KB Output is correct
15 Correct 13 ms 15308 KB Output is correct
16 Correct 13 ms 15308 KB Output is correct
17 Correct 13 ms 15284 KB Output is correct
18 Correct 13 ms 15268 KB Output is correct
19 Correct 14 ms 15308 KB Output is correct
20 Correct 477 ms 17836 KB Output is correct
21 Correct 479 ms 17700 KB Output is correct
22 Correct 471 ms 17944 KB Output is correct
23 Correct 495 ms 17780 KB Output is correct
24 Correct 739 ms 259944 KB Output is correct
25 Correct 761 ms 259864 KB Output is correct
26 Correct 754 ms 259828 KB Output is correct
27 Correct 752 ms 260804 KB Output is correct
28 Correct 784 ms 260928 KB Output is correct
29 Correct 755 ms 260828 KB Output is correct
30 Correct 741 ms 260076 KB Output is correct
31 Correct 799 ms 260292 KB Output is correct
32 Correct 769 ms 260152 KB Output is correct
33 Correct 582 ms 260404 KB Output is correct
34 Correct 543 ms 260772 KB Output is correct
35 Correct 573 ms 260564 KB Output is correct
36 Correct 673 ms 260932 KB Output is correct
37 Correct 736 ms 260704 KB Output is correct
38 Correct 696 ms 260748 KB Output is correct
39 Correct 829 ms 268112 KB Output is correct
40 Correct 748 ms 262692 KB Output is correct
41 Correct 745 ms 262112 KB Output is correct
42 Correct 1056 ms 262460 KB Output is correct
43 Correct 773 ms 262228 KB Output is correct
44 Correct 578 ms 27844 KB Output is correct
45 Correct 509 ms 23628 KB Output is correct
46 Correct 495 ms 23428 KB Output is correct
47 Correct 573 ms 21044 KB Output is correct
48 Correct 489 ms 19236 KB Output is correct
49 Correct 858 ms 268964 KB Output is correct
50 Correct 741 ms 262680 KB Output is correct
51 Correct 530 ms 27628 KB Output is correct
52 Correct 488 ms 23160 KB Output is correct
53 Correct 802 ms 268848 KB Output is correct
54 Correct 791 ms 268656 KB Output is correct
55 Correct 686 ms 262636 KB Output is correct
56 Correct 722 ms 262684 KB Output is correct
57 Correct 519 ms 27712 KB Output is correct
58 Correct 544 ms 27672 KB Output is correct
59 Correct 482 ms 23108 KB Output is correct
60 Correct 490 ms 23264 KB Output is correct
61 Correct 922 ms 263032 KB Output is correct
62 Correct 858 ms 263012 KB Output is correct
63 Correct 911 ms 262980 KB Output is correct
64 Correct 1358 ms 263028 KB Output is correct
65 Correct 1295 ms 263036 KB Output is correct
66 Correct 1365 ms 262920 KB Output is correct
67 Correct 755 ms 262572 KB Output is correct
68 Correct 687 ms 262600 KB Output is correct
69 Correct 698 ms 262532 KB Output is correct
70 Correct 779 ms 262984 KB Output is correct
71 Correct 701 ms 263052 KB Output is correct
72 Correct 778 ms 263144 KB Output is correct
73 Correct 845 ms 263100 KB Output is correct
74 Correct 785 ms 263144 KB Output is correct
75 Correct 795 ms 263120 KB Output is correct
76 Correct 835 ms 269328 KB Output is correct
77 Correct 750 ms 262928 KB Output is correct
78 Correct 773 ms 263240 KB Output is correct
79 Correct 544 ms 27788 KB Output is correct
80 Correct 484 ms 23292 KB Output is correct
81 Correct 485 ms 19272 KB Output is correct
82 Correct 844 ms 268724 KB Output is correct
83 Correct 919 ms 268556 KB Output is correct
84 Correct 762 ms 262484 KB Output is correct
85 Correct 828 ms 262396 KB Output is correct
86 Correct 787 ms 262572 KB Output is correct
87 Correct 868 ms 262616 KB Output is correct
88 Correct 534 ms 27844 KB Output is correct
89 Correct 542 ms 27844 KB Output is correct
90 Correct 486 ms 23168 KB Output is correct
91 Correct 488 ms 23276 KB Output is correct
92 Correct 470 ms 19288 KB Output is correct
93 Correct 475 ms 19272 KB Output is correct
94 Correct 682 ms 269032 KB Output is correct
95 Correct 678 ms 268868 KB Output is correct
96 Correct 591 ms 262804 KB Output is correct
97 Correct 583 ms 262760 KB Output is correct
98 Correct 626 ms 263192 KB Output is correct
99 Correct 582 ms 262896 KB Output is correct
100 Correct 541 ms 27912 KB Output is correct
101 Correct 571 ms 27876 KB Output is correct
102 Correct 514 ms 23232 KB Output is correct
103 Correct 525 ms 23336 KB Output is correct
104 Correct 492 ms 19268 KB Output is correct
105 Correct 497 ms 19500 KB Output is correct
106 Correct 769 ms 269172 KB Output is correct
107 Correct 810 ms 269140 KB Output is correct
108 Correct 687 ms 262856 KB Output is correct
109 Correct 719 ms 262848 KB Output is correct
110 Correct 720 ms 263248 KB Output is correct
111 Correct 764 ms 263328 KB Output is correct
112 Correct 552 ms 27920 KB Output is correct
113 Correct 555 ms 28064 KB Output is correct
114 Correct 485 ms 23256 KB Output is correct
115 Correct 497 ms 23164 KB Output is correct
116 Correct 465 ms 19264 KB Output is correct
117 Correct 478 ms 19212 KB Output is correct
118 Correct 776 ms 262848 KB Output is correct
119 Correct 715 ms 262880 KB Output is correct
120 Correct 716 ms 262736 KB Output is correct
121 Correct 758 ms 263100 KB Output is correct
122 Correct 694 ms 263124 KB Output is correct
123 Correct 769 ms 263084 KB Output is correct
124 Correct 779 ms 262588 KB Output is correct
125 Correct 708 ms 262668 KB Output is correct
126 Correct 710 ms 262600 KB Output is correct