oj.uz

Submission #697337

# Submission time Handle Problem Language Result Execution time Memory
697337 2023-02-09T10:06:18 Z peijar Event Hopping 2 (JOI21_event2) C++17
100 / 100
 224 ms 51696 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

string to_string(string s) { return s; }
template <typename T> string to_string(T v) {
  bool first = true;
  string res = "[";
  for (const auto &x : v) {
    if (!first)
      res += ", ";
    first = false;
    res += to_string(x);
  }
  res += "]";
  return res;
}

void dbg_out() { cout << endl; }
template <typename Head, typename... Tail> void dbg_out(Head H, Tail... T) {
  cout << ' ' << to_string(H);
  dbg_out(T...);
}

#ifdef DEBUG
#define dbg(...) cout << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__)
#else
#define dbg(...)
#endif

const int MAXN = 2e5 + 1;
const int MAXP = 20;

int nxt[MAXP][MAXN];

signed main(void) {
  ios_base::sync_with_stdio(false);
  cin.tie(0);

  int nbInt, nbVoulus;
  cin >> nbInt >> nbVoulus;

  vector<pair<int, int>> intervalles(nbInt);
  vector<int> vals;
  for (auto &[L, R] : intervalles) {
    cin >> L >> R;
    vals.push_back(L);
    vals.push_back(R);
  }
  sort(vals.begin(), vals.end());
  vals.resize(unique(vals.begin(), vals.end()) - vals.begin());
  int nbVals = vals.size();

  vector<vector<int>> onVal(nbVals);
  for (auto &[l, r] : intervalles) {
    l = lower_bound(vals.begin(), vals.end(), l) - vals.begin();
    r = lower_bound(vals.begin(), vals.end(), r) - vals.begin();
    onVal[l].push_back(r);
  }
  nxt[0][nbVals] = nbVals;
  for (int iVal = nbVals - 1; iVal >= 0; --iVal) {
    nxt[0][iVal] = nxt[0][iVal + 1];
    for (auto r : onVal[iVal])
      nxt[0][iVal] = min(nxt[0][iVal], r);
  }

  for (int p = 0; p < MAXP - 1; ++p)
    for (int i = 0; i <= nbVals; ++i)
      nxt[p + 1][i] = nxt[p][nxt[p][i]];

  auto calcMax = [&](int L, int R) {
    int sol = 0;
    for (int p = MAXP - 1; p >= 0; --p)
      if (nxt[p][L] <= R)
        sol += 1 << p, L = nxt[p][L];
    return sol;
  };
  if (calcMax(0, nbVals - 1) < nbVoulus) {
    cout << -1 << endl;
    return 0;
  }
  set<pair<int, int>> libre;
  libre.emplace(0, nbVals - 1);
  vector<int> sol;
  int tot = calcMax(0, nbVals - 1);
  for (int i = 0; i < nbInt and (int) sol.size() < nbVoulus; ++i) {
    auto [l, r] = intervalles[i];
    auto it = libre.upper_bound({l, (int)1e18});
    if (it == libre.begin())
      continue;
    --it;
    if (it->second < r)
      continue;
    auto [L, R] = *it;
    int nouv = tot - calcMax(L, R) + calcMax(L, l) + calcMax(r, R) + 1;
    if (nouv >= nbVoulus) {
      libre.erase(it);
      tot -= calcMax(L, R);
      libre.emplace(L, l);
      libre.emplace(r, R);
      tot = nouv;
      sol.push_back(i);
    }
  }
  for (int x : sol)
    cout << x + 1 << '\n';
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 130 ms 51696 KB Output is correct
5 Correct 123 ms 51284 KB Output is correct
6 Correct 127 ms 50860 KB Output is correct
7 Correct 110 ms 50132 KB Output is correct
8 Correct 131 ms 51632 KB Output is correct
9 Correct 122 ms 51236 KB Output is correct
10 Correct 117 ms 50884 KB Output is correct
11 Correct 108 ms 50204 KB Output is correct
12 Correct 104 ms 49056 KB Output is correct
13 Correct 117 ms 48636 KB Output is correct
14 Correct 96 ms 48420 KB Output is correct
15 Correct 90 ms 48032 KB Output is correct
16 Correct 73 ms 45428 KB Output is correct
17 Correct 73 ms 45368 KB Output is correct
18 Correct 70 ms 45276 KB Output is correct
19 Correct 63 ms 44676 KB Output is correct
20 Correct 65 ms 44640 KB Output is correct
21 Correct 66 ms 44568 KB Output is correct
22 Correct 65 ms 44540 KB Output is correct
23 Correct 67 ms 44484 KB Output is correct
24 Correct 65 ms 44552 KB Output is correct
25 Correct 67 ms 44468 KB Output is correct
26 Correct 68 ms 44544 KB Output is correct
27 Correct 71 ms 44584 KB Output is correct
28 Correct 57 ms 44468 KB Output is correct
29 Correct 54 ms 44444 KB Output is correct
30 Correct 65 ms 44484 KB Output is correct
31 Correct 59 ms 44448 KB Output is correct
32 Correct 62 ms 44484 KB Output is correct
33 Correct 68 ms 44484 KB Output is correct
34 Correct 82 ms 47312 KB Output is correct
35 Correct 77 ms 46296 KB Output is correct
36 Correct 61 ms 45340 KB Output is correct
37 Correct 104 ms 48244 KB Output is correct
38 Correct 97 ms 48232 KB Output is correct
39 Correct 90 ms 47940 KB Output is correct
40 Correct 90 ms 47784 KB Output is correct
41 Correct 90 ms 47748 KB Output is correct
42 Correct 70 ms 44584 KB Output is correct
43 Correct 103 ms 48164 KB Output is correct
44 Correct 103 ms 47940 KB Output is correct
45 Correct 98 ms 47812 KB Output is correct
46 Correct 104 ms 47752 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 0 ms 468 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 456 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct
16 Correct 0 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 0 ms 460 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 460 KB Output is correct
22 Correct 0 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 460 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 0 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 0 ms 468 KB Output is correct
6 Correct 0 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 0 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 456 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 0 ms 468 KB Output is correct
15 Correct 0 ms 468 KB Output is correct
16 Correct 0 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 0 ms 460 KB Output is correct
19 Correct 1 ms 464 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 460 KB Output is correct
22 Correct 0 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 460 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 3 ms 1736 KB Output is correct
29 Correct 3 ms 1732 KB Output is correct
30 Correct 3 ms 1748 KB Output is correct
31 Correct 3 ms 1748 KB Output is correct
32 Correct 3 ms 1748 KB Output is correct
33 Correct 3 ms 1748 KB Output is correct
34 Correct 3 ms 1748 KB Output is correct
35 Correct 4 ms 2004 KB Output is correct
36 Correct 6 ms 2004 KB Output is correct
37 Correct 4 ms 1880 KB Output is correct
38 Correct 3 ms 1748 KB Output is correct
39 Correct 4 ms 1876 KB Output is correct
40 Correct 4 ms 1876 KB Output is correct
41 Correct 4 ms 1876 KB Output is correct
42 Correct 3 ms 1752 KB Output is correct
43 Correct 4 ms 1748 KB Output is correct
44 Correct 3 ms 1860 KB Output is correct
45 Correct 3 ms 1748 KB Output is correct
46 Correct 2 ms 1732 KB Output is correct
47 Correct 3 ms 1756 KB Output is correct
48 Correct 3 ms 1748 KB Output is correct
49 Correct 3 ms 1748 KB Output is correct
50 Correct 2 ms 1700 KB Output is correct
51 Correct 3 ms 1748 KB Output is correct
52 Correct 3 ms 1748 KB Output is correct
53 Correct 3 ms 1752 KB Output is correct
54 Correct 3 ms 1748 KB Output is correct
55 Correct 3 ms 1480 KB Output is correct
56 Correct 3 ms 1364 KB Output is correct
57 Correct 3 ms 1492 KB Output is correct
58 Correct 3 ms 1364 KB Output is correct
59 Correct 3 ms 1364 KB Output is correct
60 Correct 3 ms 1364 KB Output is correct
61 Correct 3 ms 1368 KB Output is correct
62 Correct 3 ms 1364 KB Output is correct
63 Correct 3 ms 1364 KB Output is correct
64 Correct 2 ms 1220 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 130 ms 51696 KB Output is correct
5 Correct 123 ms 51284 KB Output is correct
6 Correct 127 ms 50860 KB Output is correct
7 Correct 110 ms 50132 KB Output is correct
8 Correct 131 ms 51632 KB Output is correct
9 Correct 122 ms 51236 KB Output is correct
10 Correct 117 ms 50884 KB Output is correct
11 Correct 108 ms 50204 KB Output is correct
12 Correct 104 ms 49056 KB Output is correct
13 Correct 117 ms 48636 KB Output is correct
14 Correct 96 ms 48420 KB Output is correct
15 Correct 90 ms 48032 KB Output is correct
16 Correct 73 ms 45428 KB Output is correct
17 Correct 73 ms 45368 KB Output is correct
18 Correct 70 ms 45276 KB Output is correct
19 Correct 63 ms 44676 KB Output is correct
20 Correct 65 ms 44640 KB Output is correct
21 Correct 66 ms 44568 KB Output is correct
22 Correct 65 ms 44540 KB Output is correct
23 Correct 67 ms 44484 KB Output is correct
24 Correct 65 ms 44552 KB Output is correct
25 Correct 67 ms 44468 KB Output is correct
26 Correct 68 ms 44544 KB Output is correct
27 Correct 71 ms 44584 KB Output is correct
28 Correct 57 ms 44468 KB Output is correct
29 Correct 54 ms 44444 KB Output is correct
30 Correct 65 ms 44484 KB Output is correct
31 Correct 59 ms 44448 KB Output is correct
32 Correct 62 ms 44484 KB Output is correct
33 Correct 68 ms 44484 KB Output is correct
34 Correct 82 ms 47312 KB Output is correct
35 Correct 77 ms 46296 KB Output is correct
36 Correct 61 ms 45340 KB Output is correct
37 Correct 104 ms 48244 KB Output is correct
38 Correct 97 ms 48232 KB Output is correct
39 Correct 90 ms 47940 KB Output is correct
40 Correct 90 ms 47784 KB Output is correct
41 Correct 90 ms 47748 KB Output is correct
42 Correct 70 ms 44584 KB Output is correct
43 Correct 103 ms 48164 KB Output is correct
44 Correct 103 ms 47940 KB Output is correct
45 Correct 98 ms 47812 KB Output is correct
46 Correct 104 ms 47752 KB Output is correct
47 Correct 0 ms 468 KB Output is correct
48 Correct 1 ms 468 KB Output is correct
49 Correct 0 ms 468 KB Output is correct
50 Correct 1 ms 468 KB Output is correct
51 Correct 0 ms 468 KB Output is correct
52 Correct 0 ms 468 KB Output is correct
53 Correct 1 ms 468 KB Output is correct
54 Correct 0 ms 468 KB Output is correct
55 Correct 1 ms 468 KB Output is correct
56 Correct 1 ms 468 KB Output is correct
57 Correct 1 ms 468 KB Output is correct
58 Correct 1 ms 456 KB Output is correct
59 Correct 1 ms 468 KB Output is correct
60 Correct 0 ms 468 KB Output is correct
61 Correct 0 ms 468 KB Output is correct
62 Correct 0 ms 468 KB Output is correct
63 Correct 1 ms 468 KB Output is correct
64 Correct 0 ms 460 KB Output is correct
65 Correct 1 ms 464 KB Output is correct
66 Correct 1 ms 468 KB Output is correct
67 Correct 1 ms 460 KB Output is correct
68 Correct 0 ms 468 KB Output is correct
69 Correct 1 ms 468 KB Output is correct
70 Correct 1 ms 460 KB Output is correct
71 Correct 1 ms 468 KB Output is correct
72 Correct 1 ms 468 KB Output is correct
73 Correct 1 ms 468 KB Output is correct
74 Correct 3 ms 1736 KB Output is correct
75 Correct 3 ms 1732 KB Output is correct
76 Correct 3 ms 1748 KB Output is correct
77 Correct 3 ms 1748 KB Output is correct
78 Correct 3 ms 1748 KB Output is correct
79 Correct 3 ms 1748 KB Output is correct
80 Correct 3 ms 1748 KB Output is correct
81 Correct 4 ms 2004 KB Output is correct
82 Correct 6 ms 2004 KB Output is correct
83 Correct 4 ms 1880 KB Output is correct
84 Correct 3 ms 1748 KB Output is correct
85 Correct 4 ms 1876 KB Output is correct
86 Correct 4 ms 1876 KB Output is correct
87 Correct 4 ms 1876 KB Output is correct
88 Correct 3 ms 1752 KB Output is correct
89 Correct 4 ms 1748 KB Output is correct
90 Correct 3 ms 1860 KB Output is correct
91 Correct 3 ms 1748 KB Output is correct
92 Correct 2 ms 1732 KB Output is correct
93 Correct 3 ms 1756 KB Output is correct
94 Correct 3 ms 1748 KB Output is correct
95 Correct 3 ms 1748 KB Output is correct
96 Correct 2 ms 1700 KB Output is correct
97 Correct 3 ms 1748 KB Output is correct
98 Correct 3 ms 1748 KB Output is correct
99 Correct 3 ms 1752 KB Output is correct
100 Correct 3 ms 1748 KB Output is correct
101 Correct 3 ms 1480 KB Output is correct
102 Correct 3 ms 1364 KB Output is correct
103 Correct 3 ms 1492 KB Output is correct
104 Correct 3 ms 1364 KB Output is correct
105 Correct 3 ms 1364 KB Output is correct
106 Correct 3 ms 1364 KB Output is correct
107 Correct 3 ms 1368 KB Output is correct
108 Correct 3 ms 1364 KB Output is correct
109 Correct 3 ms 1364 KB Output is correct
110 Correct 2 ms 1220 KB Output is correct
111 Correct 119 ms 44452 KB Output is correct
112 Correct 122 ms 44540 KB Output is correct
113 Correct 94 ms 44520 KB Output is correct
114 Correct 90 ms 44508 KB Output is correct
115 Correct 91 ms 44420 KB Output is correct
116 Correct 95 ms 44572 KB Output is correct
117 Correct 93 ms 44484 KB Output is correct
118 Correct 223 ms 51576 KB Output is correct
119 Correct 224 ms 50884 KB Output is correct
120 Correct 149 ms 47932 KB Output is correct
121 Correct 97 ms 44448 KB Output is correct
122 Correct 198 ms 48836 KB Output is correct
123 Correct 168 ms 48412 KB Output is correct
124 Correct 154 ms 47996 KB Output is correct
125 Correct 83 ms 44452 KB Output is correct
126 Correct 117 ms 45396 KB Output is correct
127 Correct 118 ms 45320 KB Output is correct
128 Correct 122 ms 45268 KB Output is correct
129 Correct 84 ms 44444 KB Output is correct
130 Correct 108 ms 44604 KB Output is correct
131 Correct 100 ms 44620 KB Output is correct
132 Correct 105 ms 44544 KB Output is correct
133 Correct 86 ms 44484 KB Output is correct
134 Correct 109 ms 44456 KB Output is correct
135 Correct 100 ms 44548 KB Output is correct
136 Correct 98 ms 44508 KB Output is correct
137 Correct 93 ms 44496 KB Output is correct
138 Correct 93 ms 44524 KB Output is correct
139 Correct 93 ms 44436 KB Output is correct
140 Correct 95 ms 44524 KB Output is correct
141 Correct 94 ms 44456 KB Output is correct
142 Correct 120 ms 34216 KB Output is correct
143 Correct 142 ms 34196 KB Output is correct
144 Correct 125 ms 34172 KB Output is correct
145 Correct 115 ms 34268 KB Output is correct
146 Correct 115 ms 34116 KB Output is correct
147 Correct 109 ms 34004 KB Output is correct
148 Correct 112 ms 34028 KB Output is correct
149 Correct 128 ms 33732 KB Output is correct
150 Correct 111 ms 33588 KB Output is correct
151 Correct 99 ms 32876 KB Output is correct
152 Correct 44 ms 26724 KB Output is correct
153 Correct 133 ms 34256 KB Output is correct
154 Correct 113 ms 34152 KB Output is correct
155 Correct 116 ms 33968 KB Output is correct
156 Correct 118 ms 34044 KB Output is correct
157 Correct 124 ms 33768 KB Output is correct
158 Correct 109 ms 33548 KB Output is correct
159 Correct 98 ms 32772 KB Output is correct
160 Correct 49 ms 26748 KB Output is correct
161 Correct 179 ms 39344 KB Output is correct
162 Correct 145 ms 39236 KB Output is correct
163 Correct 137 ms 39108 KB Output is correct
164 Correct 157 ms 38948 KB Output is correct
165 Correct 137 ms 38784 KB Output is correct
166 Correct 62 ms 44412 KB Output is correct
167 Correct 105 ms 48144 KB Output is correct
168 Correct 115 ms 48124 KB Output is correct
169 Correct 97 ms 47820 KB Output is correct
170 Correct 95 ms 47668 KB Output is correct
171 Correct 90 ms 47684 KB Output is correct
172 Correct 95 ms 48324 KB Output is correct
173 Correct 148 ms 30476 KB Output is correct
174 Correct 142 ms 30360 KB Output is correct
175 Correct 148 ms 30336 KB Output is correct
176 Correct 120 ms 29672 KB Output is correct