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Submission #43985

# Submission time Handle Problem Language Result Execution time Memory
43985 2018-03-29T06:45:30 Z ruhanhabib39 Bitaro’s Party (JOI18_bitaro) C++17
100 / 100
 1927 ms 300920 KB 
#include <bits/stdc++.h>
using namespace std;

const int MAXN = 1e5;
const int BLOCK = 320;

int N, M, Q;
vector<int> to[MAXN + 10];

struct dat {
   int w, u;
   dat(int w_, int u_) : w(w_), u(u_) {}
   dat(const dat& d) : w(d.w), u(d.u) {}
   // datA before datB if datA.w > datB.w
   bool operator<(dat d) const {
      if(w == d.w) return u < d.u;
      return w > d.w;
   }
};

vector<int> from[MAXN + 10];

int qi = 0;
int bad[MAXN + 10];


int dp[MAXN + 10];

int solve1(int V) {
   for(int v = 1; v <= V; v++) {
      if(bad[v] != qi) dp[v] = 0;
      else dp[v] = -1e9;
      for(int u : from[v]) {
         dp[v] = max(dp[v], 1 + dp[u]);
      }
   }
   if(dp[V] < 0) dp[V] = -1;
   return dp[V];
}

vector<dat> best[MAXN + 10];
int done[MAXN + 10], di = 0;

void work(int u) {
   vector<dat> cp(best[u].begin(), best[u].end());
   for(dat& it : cp) it.w++;

   for(int v : to[u]) {
      auto mIt = best[v].insert(best[v].end(), cp.begin(), cp.end());
      inplace_merge(best[v].begin(), mIt, best[v].end());
      
      vector<dat> cpV; cpV.reserve(BLOCK);
      ++di;
      for(auto it : best[v]) {
         if(done[it.u] < di) {
            done[it.u] = di;
            cpV.push_back(it);
         }
         if(cpV.size() >= BLOCK) break;
      }
      best[v].swap(cpV);
   }
}

int solve2(int V) {
   for(auto& it : best[V]) {
      if(bad[it.u] != qi) return it.w;
   }
   if(bad[V] != qi) return 0;
   return -1;
}

int main() {
   assert(scanf("%d%d%d", &N, &M, &Q) == 3);
   for(int i = 0; i < M; i++) {
      int u, v; assert(scanf("%d%d", &u, &v) == 2);
      to[u].push_back(v);
      from[v].push_back(u);
   }
   for(int u = 1; u <= N; u++) {
      best[u].emplace_back(0, u);
   }
   for(int u = 1; u <= N; u++) {
      work(u);
   }
   for(qi = 1; qi <= Q; qi++) {
      int dest, badc;
      assert(scanf("%d%d", &dest, &badc) == 2);
      for(int i = 0; i < badc; i++) {
         int v; assert(scanf("%d", &v) == 1);
         bad[v] = qi;
      }
      int res = -1;
      if(badc >= BLOCK) res = solve1(dest);
      else res = solve2(dest);
      printf("%d\n", res);
   }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7288 KB Output is correct
2 Correct 9 ms 7412 KB Output is correct
3 Correct 9 ms 7488 KB Output is correct
4 Correct 10 ms 7508 KB Output is correct
5 Correct 15 ms 9760 KB Output is correct
6 Correct 16 ms 9888 KB Output is correct
7 Correct 15 ms 9888 KB Output is correct
8 Correct 24 ms 10144 KB Output is correct
9 Correct 21 ms 10144 KB Output is correct
10 Correct 21 ms 10144 KB Output is correct
11 Correct 20 ms 10144 KB Output is correct
12 Correct 17 ms 10212 KB Output is correct
13 Correct 22 ms 10212 KB Output is correct
14 Correct 19 ms 10212 KB Output is correct
15 Correct 17 ms 10212 KB Output is correct
16 Correct 18 ms 10212 KB Output is correct
17 Correct 17 ms 10212 KB Output is correct
18 Correct 15 ms 10212 KB Output is correct
19 Correct 17 ms 10212 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7288 KB Output is correct
2 Correct 9 ms 7412 KB Output is correct
3 Correct 9 ms 7488 KB Output is correct
4 Correct 10 ms 7508 KB Output is correct
5 Correct 15 ms 9760 KB Output is correct
6 Correct 16 ms 9888 KB Output is correct
7 Correct 15 ms 9888 KB Output is correct
8 Correct 24 ms 10144 KB Output is correct
9 Correct 21 ms 10144 KB Output is correct
10 Correct 21 ms 10144 KB Output is correct
11 Correct 20 ms 10144 KB Output is correct
12 Correct 17 ms 10212 KB Output is correct
13 Correct 22 ms 10212 KB Output is correct
14 Correct 19 ms 10212 KB Output is correct
15 Correct 17 ms 10212 KB Output is correct
16 Correct 18 ms 10212 KB Output is correct
17 Correct 17 ms 10212 KB Output is correct
18 Correct 15 ms 10212 KB Output is correct
19 Correct 17 ms 10212 KB Output is correct
20 Correct 773 ms 12584 KB Output is correct
21 Correct 736 ms 12656 KB Output is correct
22 Correct 755 ms 12784 KB Output is correct
23 Correct 909 ms 12784 KB Output is correct
24 Correct 1310 ms 235148 KB Output is correct
25 Correct 1460 ms 235148 KB Output is correct
26 Correct 1406 ms 235148 KB Output is correct
27 Correct 1423 ms 267712 KB Output is correct
28 Correct 1290 ms 270296 KB Output is correct
29 Correct 1287 ms 270724 KB Output is correct
30 Correct 1523 ms 270724 KB Output is correct
31 Correct 1514 ms 270724 KB Output is correct
32 Correct 1426 ms 270724 KB Output is correct
33 Correct 1185 ms 270724 KB Output is correct
34 Correct 1098 ms 270724 KB Output is correct
35 Correct 1175 ms 270724 KB Output is correct
36 Correct 1207 ms 270724 KB Output is correct
37 Correct 1285 ms 270724 KB Output is correct
38 Correct 1169 ms 270724 KB Output is correct

Subtask #3
86.0 / 86.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 7288 KB Output is correct
2 Correct 9 ms 7412 KB Output is correct
3 Correct 9 ms 7488 KB Output is correct
4 Correct 10 ms 7508 KB Output is correct
5 Correct 15 ms 9760 KB Output is correct
6 Correct 16 ms 9888 KB Output is correct
7 Correct 15 ms 9888 KB Output is correct
8 Correct 24 ms 10144 KB Output is correct
9 Correct 21 ms 10144 KB Output is correct
10 Correct 21 ms 10144 KB Output is correct
11 Correct 20 ms 10144 KB Output is correct
12 Correct 17 ms 10212 KB Output is correct
13 Correct 22 ms 10212 KB Output is correct
14 Correct 19 ms 10212 KB Output is correct
15 Correct 17 ms 10212 KB Output is correct
16 Correct 18 ms 10212 KB Output is correct
17 Correct 17 ms 10212 KB Output is correct
18 Correct 15 ms 10212 KB Output is correct
19 Correct 17 ms 10212 KB Output is correct
20 Correct 773 ms 12584 KB Output is correct
21 Correct 736 ms 12656 KB Output is correct
22 Correct 755 ms 12784 KB Output is correct
23 Correct 909 ms 12784 KB Output is correct
24 Correct 1310 ms 235148 KB Output is correct
25 Correct 1460 ms 235148 KB Output is correct
26 Correct 1406 ms 235148 KB Output is correct
27 Correct 1423 ms 267712 KB Output is correct
28 Correct 1290 ms 270296 KB Output is correct
29 Correct 1287 ms 270724 KB Output is correct
30 Correct 1523 ms 270724 KB Output is correct
31 Correct 1514 ms 270724 KB Output is correct
32 Correct 1426 ms 270724 KB Output is correct
33 Correct 1185 ms 270724 KB Output is correct
34 Correct 1098 ms 270724 KB Output is correct
35 Correct 1175 ms 270724 KB Output is correct
36 Correct 1207 ms 270724 KB Output is correct
37 Correct 1285 ms 270724 KB Output is correct
38 Correct 1169 ms 270724 KB Output is correct
39 Correct 1697 ms 270724 KB Output is correct
40 Correct 1440 ms 270724 KB Output is correct
41 Correct 1488 ms 270724 KB Output is correct
42 Correct 1609 ms 270724 KB Output is correct
43 Correct 1575 ms 270724 KB Output is correct
44 Correct 836 ms 270724 KB Output is correct
45 Correct 772 ms 270724 KB Output is correct
46 Correct 827 ms 270724 KB Output is correct
47 Correct 777 ms 270724 KB Output is correct
48 Correct 785 ms 270724 KB Output is correct
49 Correct 1521 ms 270928 KB Output is correct
50 Correct 1354 ms 270928 KB Output is correct
51 Correct 776 ms 270928 KB Output is correct
52 Correct 730 ms 270928 KB Output is correct
53 Correct 1245 ms 270928 KB Output is correct
54 Correct 1343 ms 270928 KB Output is correct
55 Correct 1231 ms 270928 KB Output is correct
56 Correct 1228 ms 270928 KB Output is correct
57 Correct 799 ms 270928 KB Output is correct
58 Correct 790 ms 270928 KB Output is correct
59 Correct 767 ms 270928 KB Output is correct
60 Correct 817 ms 270928 KB Output is correct
61 Correct 1461 ms 270928 KB Output is correct
62 Correct 1433 ms 270928 KB Output is correct
63 Correct 1577 ms 270928 KB Output is correct
64 Correct 1927 ms 270928 KB Output is correct
65 Correct 1698 ms 270928 KB Output is correct
66 Correct 1746 ms 270928 KB Output is correct
67 Correct 1449 ms 277884 KB Output is correct
68 Correct 1320 ms 277884 KB Output is correct
69 Correct 1280 ms 277884 KB Output is correct
70 Correct 1449 ms 286232 KB Output is correct
71 Correct 1288 ms 286232 KB Output is correct
72 Correct 1396 ms 286232 KB Output is correct
73 Correct 1474 ms 294164 KB Output is correct
74 Correct 1348 ms 294164 KB Output is correct
75 Correct 1420 ms 294164 KB Output is correct
76 Correct 1483 ms 300920 KB Output is correct
77 Correct 1365 ms 300920 KB Output is correct
78 Correct 1362 ms 300920 KB Output is correct
79 Correct 782 ms 300920 KB Output is correct
80 Correct 735 ms 300920 KB Output is correct
81 Correct 772 ms 300920 KB Output is correct
82 Correct 1664 ms 300920 KB Output is correct
83 Correct 1648 ms 300920 KB Output is correct
84 Correct 1471 ms 300920 KB Output is correct
85 Correct 1423 ms 300920 KB Output is correct
86 Correct 1527 ms 300920 KB Output is correct
87 Correct 1501 ms 300920 KB Output is correct
88 Correct 780 ms 300920 KB Output is correct
89 Correct 811 ms 300920 KB Output is correct
90 Correct 762 ms 300920 KB Output is correct
91 Correct 746 ms 300920 KB Output is correct
92 Correct 763 ms 300920 KB Output is correct
93 Correct 757 ms 300920 KB Output is correct
94 Correct 1143 ms 300920 KB Output is correct
95 Correct 1186 ms 300920 KB Output is correct
96 Correct 1198 ms 300920 KB Output is correct
97 Correct 1205 ms 300920 KB Output is correct
98 Correct 1373 ms 300920 KB Output is correct
99 Correct 1243 ms 300920 KB Output is correct
100 Correct 989 ms 300920 KB Output is correct
101 Correct 942 ms 300920 KB Output is correct
102 Correct 962 ms 300920 KB Output is correct
103 Correct 972 ms 300920 KB Output is correct
104 Correct 976 ms 300920 KB Output is correct
105 Correct 953 ms 300920 KB Output is correct
106 Correct 1390 ms 300920 KB Output is correct
107 Correct 1389 ms 300920 KB Output is correct
108 Correct 1229 ms 300920 KB Output is correct
109 Correct 1195 ms 300920 KB Output is correct
110 Correct 1307 ms 300920 KB Output is correct
111 Correct 1262 ms 300920 KB Output is correct
112 Correct 856 ms 300920 KB Output is correct
113 Correct 835 ms 300920 KB Output is correct
114 Correct 809 ms 300920 KB Output is correct
115 Correct 787 ms 300920 KB Output is correct
116 Correct 819 ms 300920 KB Output is correct
117 Correct 822 ms 300920 KB Output is correct
118 Correct 1399 ms 300920 KB Output is correct
119 Correct 1247 ms 300920 KB Output is correct
120 Correct 1242 ms 300920 KB Output is correct
121 Correct 1386 ms 300920 KB Output is correct
122 Correct 1316 ms 300920 KB Output is correct
123 Correct 1310 ms 300920 KB Output is correct
124 Correct 1318 ms 300920 KB Output is correct
125 Correct 1230 ms 300920 KB Output is correct
126 Correct 1212 ms 300920 KB Output is correct