oj.uz

Submission #201995

# Submission time Handle Problem Language Result Execution time Memory
201995 2020-02-13T02:35:49 Z EntityIT Bitaro’s Party (JOI18_bitaro) C++14
100 / 100
 1838 ms 421220 KB 
#include<bits/stdc++.h>

using namespace std;

#define all(x) (x).begin(), (x).end()
#define sz(x) ( (int)(x).size() )
using LL = long long;

template<class T>
inline bool asMn(T &a, const T &b) { return a > b ? a = b, true : false; }
template<class T>
inline bool asMx(T &a, const T &b) { return a < b ? a = b, true : false; }

const int bdr = 400;
mt19937 rng( (uint32_t)chrono::steady_clock::now().time_since_epoch().count() );

int main() {
  ios_base::sync_with_stdio(0); cin.tie(0);

  #ifdef FourLeafClover
  freopen("input", "r", stdin);
  #endif // FourLeafCLover

  int n, m, q; cin >> n >> m >> q;

  vector<vector<int> > gr(n);
  while (m--) {
    int s, e; cin >> s >> e; --s; --e;
    gr[e].emplace_back(s);
  }

  vector<vector<pair<int, int> > > d(n);
  vector<int> val(n, -1), wait;
  for (int u = 0; u < n; ++u) {
    for (int v : gr[u]) {
      for (auto _ : d[v]) {
        if (val[_.second] == -1) wait.emplace_back(_.second);
        asMx(val[_.second], _.first + 1);
      }
    }
    asMx(val[u], 0);
    wait.emplace_back(u);

    nth_element(wait.begin(), wait.begin() + min(bdr, sz(wait) ), wait.end(), [&](int i, int j) { return val[i] > val[j]; });
    for (int i = 0; i < min(bdr, sz(wait) ); ++i) d[u].emplace_back(pair<int, int>{ val[ wait[i] ], wait[i] } );
    for (int v : wait) val[v] = -1;
    wait.clear();
  }

  vector<int> f(n, -1);
  vector<bool> banned(n, false);
  function<int(int)> F = [&](int u) {
    if (~f[u]) return f[u];
    f[u] = (banned[u] ? -2 : 0);
    for (int v : gr[u]) if (F(v) >= 0) asMx(f[u], f[v] + 1);
    return f[u];
  };

  while (q--) {
    int t, y; cin >> t >> y; --t;
    vector<int> tmp(y);
    for (auto &u : tmp) {
      cin >> u; --u;
      banned[u] = true;
    }

    if (y >= bdr) {
      cout << max(F(t), -1) << '\n';
      f.assign(n, -1);
    }
    else {
      int ans = -1;
      for (auto _ : d[t]) if (!banned[_.second]) asMx(ans, _.first);
      cout << ans << '\n';
    }

    for (int u : tmp) banned[u] = false;
  }

  return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 380 KB Output is correct
2 Correct 5 ms 380 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 7 ms 888 KB Output is correct
6 Correct 7 ms 888 KB Output is correct
7 Correct 7 ms 888 KB Output is correct
8 Correct 16 ms 3832 KB Output is correct
9 Correct 16 ms 3832 KB Output is correct
10 Correct 16 ms 3832 KB Output is correct
11 Correct 14 ms 3448 KB Output is correct
12 Correct 9 ms 1656 KB Output is correct
13 Correct 14 ms 3196 KB Output is correct
14 Correct 12 ms 2424 KB Output is correct
15 Correct 9 ms 1404 KB Output is correct
16 Correct 12 ms 2296 KB Output is correct
17 Correct 12 ms 2680 KB Output is correct
18 Correct 9 ms 1528 KB Output is correct
19 Correct 13 ms 2556 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 380 KB Output is correct
2 Correct 5 ms 380 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 7 ms 888 KB Output is correct
6 Correct 7 ms 888 KB Output is correct
7 Correct 7 ms 888 KB Output is correct
8 Correct 16 ms 3832 KB Output is correct
9 Correct 16 ms 3832 KB Output is correct
10 Correct 16 ms 3832 KB Output is correct
11 Correct 14 ms 3448 KB Output is correct
12 Correct 9 ms 1656 KB Output is correct
13 Correct 14 ms 3196 KB Output is correct
14 Correct 12 ms 2424 KB Output is correct
15 Correct 9 ms 1404 KB Output is correct
16 Correct 12 ms 2296 KB Output is correct
17 Correct 12 ms 2680 KB Output is correct
18 Correct 9 ms 1528 KB Output is correct
19 Correct 13 ms 2556 KB Output is correct
20 Correct 123 ms 5496 KB Output is correct
21 Correct 118 ms 5496 KB Output is correct
22 Correct 120 ms 5496 KB Output is correct
23 Correct 146 ms 5496 KB Output is correct
24 Correct 1142 ms 252412 KB Output is correct
25 Correct 1193 ms 264052 KB Output is correct
26 Correct 1158 ms 263164 KB Output is correct
27 Correct 1496 ms 415352 KB Output is correct
28 Correct 1477 ms 415736 KB Output is correct
29 Correct 1482 ms 417400 KB Output is correct
30 Correct 1451 ms 410616 KB Output is correct
31 Correct 1682 ms 396152 KB Output is correct
32 Correct 1447 ms 410872 KB Output is correct
33 Correct 953 ms 253048 KB Output is correct
34 Correct 1046 ms 206712 KB Output is correct
35 Correct 950 ms 251260 KB Output is correct
36 Correct 1211 ms 331896 KB Output is correct
37 Correct 1351 ms 300144 KB Output is correct
38 Correct 1211 ms 333024 KB Output is correct

Subtask #3
86.0 / 86.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 380 KB Output is correct
2 Correct 5 ms 380 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 7 ms 888 KB Output is correct
6 Correct 7 ms 888 KB Output is correct
7 Correct 7 ms 888 KB Output is correct
8 Correct 16 ms 3832 KB Output is correct
9 Correct 16 ms 3832 KB Output is correct
10 Correct 16 ms 3832 KB Output is correct
11 Correct 14 ms 3448 KB Output is correct
12 Correct 9 ms 1656 KB Output is correct
13 Correct 14 ms 3196 KB Output is correct
14 Correct 12 ms 2424 KB Output is correct
15 Correct 9 ms 1404 KB Output is correct
16 Correct 12 ms 2296 KB Output is correct
17 Correct 12 ms 2680 KB Output is correct
18 Correct 9 ms 1528 KB Output is correct
19 Correct 13 ms 2556 KB Output is correct
20 Correct 123 ms 5496 KB Output is correct
21 Correct 118 ms 5496 KB Output is correct
22 Correct 120 ms 5496 KB Output is correct
23 Correct 146 ms 5496 KB Output is correct
24 Correct 1142 ms 252412 KB Output is correct
25 Correct 1193 ms 264052 KB Output is correct
26 Correct 1158 ms 263164 KB Output is correct
27 Correct 1496 ms 415352 KB Output is correct
28 Correct 1477 ms 415736 KB Output is correct
29 Correct 1482 ms 417400 KB Output is correct
30 Correct 1451 ms 410616 KB Output is correct
31 Correct 1682 ms 396152 KB Output is correct
32 Correct 1447 ms 410872 KB Output is correct
33 Correct 953 ms 253048 KB Output is correct
34 Correct 1046 ms 206712 KB Output is correct
35 Correct 950 ms 251260 KB Output is correct
36 Correct 1211 ms 331896 KB Output is correct
37 Correct 1351 ms 300144 KB Output is correct
38 Correct 1211 ms 333024 KB Output is correct
39 Correct 1278 ms 255312 KB Output is correct
40 Correct 1166 ms 257532 KB Output is correct
41 Correct 1236 ms 260180 KB Output is correct
42 Correct 1224 ms 257992 KB Output is correct
43 Correct 1214 ms 257520 KB Output is correct
44 Correct 216 ms 5344 KB Output is correct
45 Correct 157 ms 4972 KB Output is correct
46 Correct 142 ms 4860 KB Output is correct
47 Correct 213 ms 4856 KB Output is correct
48 Correct 153 ms 4856 KB Output is correct
49 Correct 1679 ms 411332 KB Output is correct
50 Correct 1549 ms 410744 KB Output is correct
51 Correct 240 ms 5240 KB Output is correct
52 Correct 151 ms 4984 KB Output is correct
53 Correct 1382 ms 330616 KB Output is correct
54 Correct 1525 ms 300620 KB Output is correct
55 Correct 1242 ms 330716 KB Output is correct
56 Correct 1398 ms 301256 KB Output is correct
57 Correct 205 ms 5344 KB Output is correct
58 Correct 212 ms 5240 KB Output is correct
59 Correct 130 ms 4856 KB Output is correct
60 Correct 139 ms 4856 KB Output is correct
61 Correct 1823 ms 418584 KB Output is correct
62 Correct 1400 ms 332024 KB Output is correct
63 Correct 1447 ms 299640 KB Output is correct
64 Correct 1459 ms 410872 KB Output is correct
65 Correct 1211 ms 333156 KB Output is correct
66 Correct 1374 ms 303992 KB Output is correct
67 Correct 1464 ms 413560 KB Output is correct
68 Correct 1225 ms 334712 KB Output is correct
69 Correct 1337 ms 299896 KB Output is correct
70 Correct 1516 ms 420472 KB Output is correct
71 Correct 1241 ms 334816 KB Output is correct
72 Correct 1363 ms 303268 KB Output is correct
73 Correct 1583 ms 421220 KB Output is correct
74 Correct 1325 ms 334968 KB Output is correct
75 Correct 1394 ms 303600 KB Output is correct
76 Correct 1619 ms 415096 KB Output is correct
77 Correct 1487 ms 413816 KB Output is correct
78 Correct 1520 ms 420580 KB Output is correct
79 Correct 195 ms 7672 KB Output is correct
80 Correct 126 ms 6776 KB Output is correct
81 Correct 125 ms 6520 KB Output is correct
82 Correct 1593 ms 414456 KB Output is correct
83 Correct 1838 ms 400248 KB Output is correct
84 Correct 1455 ms 413304 KB Output is correct
85 Correct 1728 ms 398460 KB Output is correct
86 Correct 1468 ms 414328 KB Output is correct
87 Correct 1733 ms 399608 KB Output is correct
88 Correct 200 ms 7676 KB Output is correct
89 Correct 207 ms 7672 KB Output is correct
90 Correct 129 ms 6776 KB Output is correct
91 Correct 133 ms 6776 KB Output is correct
92 Correct 122 ms 6520 KB Output is correct
93 Correct 123 ms 6392 KB Output is correct
94 Correct 1059 ms 257016 KB Output is correct
95 Correct 1161 ms 209528 KB Output is correct
96 Correct 955 ms 254660 KB Output is correct
97 Correct 1078 ms 212472 KB Output is correct
98 Correct 981 ms 255480 KB Output is correct
99 Correct 1065 ms 211832 KB Output is correct
100 Correct 218 ms 7800 KB Output is correct
101 Correct 238 ms 7800 KB Output is correct
102 Correct 142 ms 6776 KB Output is correct
103 Correct 154 ms 6776 KB Output is correct
104 Correct 138 ms 6520 KB Output is correct
105 Correct 144 ms 6392 KB Output is correct
106 Correct 1335 ms 334664 KB Output is correct
107 Correct 1473 ms 304504 KB Output is correct
108 Correct 1217 ms 335608 KB Output is correct
109 Correct 1324 ms 303096 KB Output is correct
110 Correct 1245 ms 335864 KB Output is correct
111 Correct 1379 ms 304180 KB Output is correct
112 Correct 202 ms 7800 KB Output is correct
113 Correct 203 ms 7864 KB Output is correct
114 Correct 125 ms 6780 KB Output is correct
115 Correct 127 ms 6776 KB Output is correct
116 Correct 137 ms 6520 KB Output is correct
117 Correct 124 ms 6376 KB Output is correct
118 Correct 1492 ms 413388 KB Output is correct
119 Correct 1217 ms 335480 KB Output is correct
120 Correct 1346 ms 302584 KB Output is correct
121 Correct 1501 ms 413468 KB Output is correct
122 Correct 1246 ms 334204 KB Output is correct
123 Correct 1400 ms 302836 KB Output is correct
124 Correct 1493 ms 413560 KB Output is correct
125 Correct 1221 ms 335608 KB Output is correct
126 Correct 1363 ms 301632 KB Output is correct