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Submission #907204

# Submission time Handle Problem Language Result Execution time Memory
907204 2024-01-15T08:36:09 Z 12345678 Bitaro’s Party (JOI18_bitaro) C++17
100 / 100
 624 ms 275612 KB 
#include <bits/stdc++.h>

using namespace std;

const int nx=1e5+5, kx=330;
int n, m, Q, a, b, sz, l, ans, x, idx[nx];
pair<int, int> mx[nx][kx];
vector<int> d[nx], rv[nx], vs(nx), dp(nx);
queue<int> q;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>m>>Q;
    for (int i=1; i<=m; i++) cin>>a>>b, d[a].push_back(b), rv[b].push_back(a);
    //for (int i=1; i<=n; i++) for (int j=0; j<kx; j++) mx[i][j]={-1, 0};
    for (int i=1; i<=n; i++)
    {
        for (auto v:rv[i]) idx[v]=0;
        for (int j=0; j<kx; j++)
        {
            pair<int, pair<int, int>> res={-1, {0, -1}};
            for (auto v:rv[i])
            {
                while (idx[v]<kx&&mx[v][idx[v]].first>=0&&vs[mx[v][idx[v]].second]) idx[v]++;
                if (idx[v]<kx&&mx[v][idx[v]].first>=0) 
                {
                    if (res.first<mx[v][idx[v]].first+1) res={mx[v][idx[v]].first+1, {mx[v][idx[v]].second, v}};
                }
            }
            if (res.first>=0) 
            {
                idx[res.second.second]++, vs[res.second.first]=1, q.push(res.second.first);
            }
            mx[i][j]={res.first, res.second.first};
        }
        for (int j=0; j<kx; j++) 
        {
            if (mx[i][j].first<0) {
                mx[i][j]={0, i};
                break;
            }
        }
        while (!q.empty()) vs[q.front()]=0, q.pop();
    }
    //for (int i=1; i<=n; i++) for (int j=0; j<5; j++) cout<<i<<' '<<j<<' '<<mx[i][j].first<<' '<<mx[i][j].second<<'\n';
    while (Q--)
    {
        cin>>l>>sz;
        for (int i=1; i<=sz; i++) cin>>x, q.push(x), vs[x]=1;
        if (sz<kx-1)
        {
            bool pt=0;
            for (int i=0; i<kx&&!pt; i++) if (mx[l][i].first>=0&&!vs[mx[l][i].second]) cout<<mx[l][i].first<<'\n', pt=1;
            if (!pt) cout<<-1<<'\n';
        }
        else
        {
            for (int i=1; i<=n; i++) dp[i]=INT_MIN;
            dp[l]=0;
            ans=-1;
            for (int i=l; i>=1; i--) 
            {
                for (auto v:d[i]) dp[i]=max(dp[i], dp[v]+1);
                if (!vs[i]) ans=max(ans, dp[i]);
            }
            for (int i=1; i<=n; i++) vs[i]=0;
            cout<<ans<<'\n';
        }
        while (!q.empty()) vs[q.front()]=0, q.pop();
    }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7512 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 3 ms 7516 KB Output is correct
4 Correct 2 ms 7516 KB Output is correct
5 Correct 5 ms 9564 KB Output is correct
6 Correct 7 ms 9564 KB Output is correct
7 Correct 5 ms 9564 KB Output is correct
8 Correct 6 ms 9560 KB Output is correct
9 Correct 6 ms 9564 KB Output is correct
10 Correct 6 ms 9736 KB Output is correct
11 Correct 7 ms 9732 KB Output is correct
12 Correct 6 ms 9564 KB Output is correct
13 Correct 6 ms 9564 KB Output is correct
14 Correct 6 ms 9724 KB Output is correct
15 Correct 5 ms 9560 KB Output is correct
16 Correct 6 ms 9740 KB Output is correct
17 Correct 6 ms 9560 KB Output is correct
18 Correct 7 ms 9560 KB Output is correct
19 Correct 6 ms 9560 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7512 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 3 ms 7516 KB Output is correct
4 Correct 2 ms 7516 KB Output is correct
5 Correct 5 ms 9564 KB Output is correct
6 Correct 7 ms 9564 KB Output is correct
7 Correct 5 ms 9564 KB Output is correct
8 Correct 6 ms 9560 KB Output is correct
9 Correct 6 ms 9564 KB Output is correct
10 Correct 6 ms 9736 KB Output is correct
11 Correct 7 ms 9732 KB Output is correct
12 Correct 6 ms 9564 KB Output is correct
13 Correct 6 ms 9564 KB Output is correct
14 Correct 6 ms 9724 KB Output is correct
15 Correct 5 ms 9560 KB Output is correct
16 Correct 6 ms 9740 KB Output is correct
17 Correct 6 ms 9560 KB Output is correct
18 Correct 7 ms 9560 KB Output is correct
19 Correct 6 ms 9560 KB Output is correct
20 Correct 230 ms 13140 KB Output is correct
21 Correct 221 ms 13136 KB Output is correct
22 Correct 222 ms 12940 KB Output is correct
23 Correct 261 ms 13220 KB Output is correct
24 Correct 486 ms 271576 KB Output is correct
25 Correct 499 ms 271532 KB Output is correct
26 Correct 499 ms 271440 KB Output is correct
27 Correct 513 ms 272844 KB Output is correct
28 Correct 471 ms 272980 KB Output is correct
29 Correct 481 ms 273012 KB Output is correct
30 Correct 491 ms 272252 KB Output is correct
31 Correct 514 ms 272096 KB Output is correct
32 Correct 517 ms 272276 KB Output is correct
33 Correct 440 ms 272260 KB Output is correct
34 Correct 394 ms 272208 KB Output is correct
35 Correct 406 ms 272332 KB Output is correct
36 Correct 454 ms 272676 KB Output is correct
37 Correct 483 ms 272212 KB Output is correct
38 Correct 482 ms 272620 KB Output is correct

Subtask #3
86.0 / 86.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 7512 KB Output is correct
2 Correct 3 ms 7516 KB Output is correct
3 Correct 3 ms 7516 KB Output is correct
4 Correct 2 ms 7516 KB Output is correct
5 Correct 5 ms 9564 KB Output is correct
6 Correct 7 ms 9564 KB Output is correct
7 Correct 5 ms 9564 KB Output is correct
8 Correct 6 ms 9560 KB Output is correct
9 Correct 6 ms 9564 KB Output is correct
10 Correct 6 ms 9736 KB Output is correct
11 Correct 7 ms 9732 KB Output is correct
12 Correct 6 ms 9564 KB Output is correct
13 Correct 6 ms 9564 KB Output is correct
14 Correct 6 ms 9724 KB Output is correct
15 Correct 5 ms 9560 KB Output is correct
16 Correct 6 ms 9740 KB Output is correct
17 Correct 6 ms 9560 KB Output is correct
18 Correct 7 ms 9560 KB Output is correct
19 Correct 6 ms 9560 KB Output is correct
20 Correct 230 ms 13140 KB Output is correct
21 Correct 221 ms 13136 KB Output is correct
22 Correct 222 ms 12940 KB Output is correct
23 Correct 261 ms 13220 KB Output is correct
24 Correct 486 ms 271576 KB Output is correct
25 Correct 499 ms 271532 KB Output is correct
26 Correct 499 ms 271440 KB Output is correct
27 Correct 513 ms 272844 KB Output is correct
28 Correct 471 ms 272980 KB Output is correct
29 Correct 481 ms 273012 KB Output is correct
30 Correct 491 ms 272252 KB Output is correct
31 Correct 514 ms 272096 KB Output is correct
32 Correct 517 ms 272276 KB Output is correct
33 Correct 440 ms 272260 KB Output is correct
34 Correct 394 ms 272208 KB Output is correct
35 Correct 406 ms 272332 KB Output is correct
36 Correct 454 ms 272676 KB Output is correct
37 Correct 483 ms 272212 KB Output is correct
38 Correct 482 ms 272620 KB Output is correct
39 Correct 543 ms 272848 KB Output is correct
40 Correct 522 ms 272208 KB Output is correct
41 Correct 515 ms 272216 KB Output is correct
42 Correct 585 ms 272388 KB Output is correct
43 Correct 514 ms 272240 KB Output is correct
44 Correct 243 ms 14676 KB Output is correct
45 Correct 231 ms 14088 KB Output is correct
46 Correct 238 ms 14108 KB Output is correct
47 Correct 265 ms 13804 KB Output is correct
48 Correct 222 ms 13656 KB Output is correct
49 Correct 509 ms 275120 KB Output is correct
50 Correct 511 ms 273784 KB Output is correct
51 Correct 247 ms 14588 KB Output is correct
52 Correct 226 ms 13824 KB Output is correct
53 Correct 487 ms 274260 KB Output is correct
54 Correct 507 ms 274120 KB Output is correct
55 Correct 458 ms 273492 KB Output is correct
56 Correct 475 ms 273236 KB Output is correct
57 Correct 253 ms 14680 KB Output is correct
58 Correct 244 ms 14824 KB Output is correct
59 Correct 264 ms 13908 KB Output is correct
60 Correct 264 ms 13908 KB Output is correct
61 Correct 574 ms 274200 KB Output is correct
62 Correct 537 ms 273236 KB Output is correct
63 Correct 547 ms 273388 KB Output is correct
64 Correct 624 ms 273908 KB Output is correct
65 Correct 600 ms 273416 KB Output is correct
66 Correct 605 ms 273360 KB Output is correct
67 Correct 513 ms 273748 KB Output is correct
68 Correct 464 ms 273208 KB Output is correct
69 Correct 492 ms 273092 KB Output is correct
70 Correct 508 ms 273916 KB Output is correct
71 Correct 478 ms 273752 KB Output is correct
72 Correct 497 ms 273412 KB Output is correct
73 Correct 531 ms 273884 KB Output is correct
74 Correct 472 ms 273320 KB Output is correct
75 Correct 541 ms 273408 KB Output is correct
76 Correct 534 ms 275612 KB Output is correct
77 Correct 490 ms 274004 KB Output is correct
78 Correct 506 ms 274004 KB Output is correct
79 Correct 251 ms 14932 KB Output is correct
80 Correct 231 ms 13864 KB Output is correct
81 Correct 242 ms 13640 KB Output is correct
82 Correct 544 ms 274620 KB Output is correct
83 Correct 602 ms 274340 KB Output is correct
84 Correct 495 ms 273236 KB Output is correct
85 Correct 526 ms 273244 KB Output is correct
86 Correct 512 ms 273492 KB Output is correct
87 Correct 574 ms 273476 KB Output is correct
88 Correct 260 ms 14792 KB Output is correct
89 Correct 256 ms 14836 KB Output is correct
90 Correct 236 ms 13816 KB Output is correct
91 Correct 229 ms 13908 KB Output is correct
92 Correct 225 ms 13460 KB Output is correct
93 Correct 239 ms 13480 KB Output is correct
94 Correct 496 ms 274520 KB Output is correct
95 Correct 424 ms 274364 KB Output is correct
96 Correct 434 ms 273468 KB Output is correct
97 Correct 395 ms 273364 KB Output is correct
98 Correct 417 ms 273544 KB Output is correct
99 Correct 382 ms 273292 KB Output is correct
100 Correct 310 ms 14976 KB Output is correct
101 Correct 274 ms 14800 KB Output is correct
102 Correct 285 ms 14164 KB Output is correct
103 Correct 278 ms 13860 KB Output is correct
104 Correct 250 ms 13652 KB Output is correct
105 Correct 257 ms 13652 KB Output is correct
106 Correct 508 ms 274772 KB Output is correct
107 Correct 546 ms 274468 KB Output is correct
108 Correct 475 ms 273416 KB Output is correct
109 Correct 474 ms 273672 KB Output is correct
110 Correct 450 ms 273492 KB Output is correct
111 Correct 487 ms 273636 KB Output is correct
112 Correct 241 ms 14868 KB Output is correct
113 Correct 250 ms 14852 KB Output is correct
114 Correct 230 ms 13908 KB Output is correct
115 Correct 226 ms 13852 KB Output is correct
116 Correct 222 ms 13656 KB Output is correct
117 Correct 221 ms 13652 KB Output is correct
118 Correct 491 ms 273872 KB Output is correct
119 Correct 614 ms 273204 KB Output is correct
120 Correct 498 ms 273296 KB Output is correct
121 Correct 509 ms 273696 KB Output is correct
122 Correct 494 ms 273664 KB Output is correct
123 Correct 483 ms 273276 KB Output is correct
124 Correct 495 ms 274032 KB Output is correct
125 Correct 467 ms 273080 KB Output is correct
126 Correct 477 ms 273280 KB Output is correct