oj.uz

Submission #446868

# Submission time Handle Problem Language Result Execution time Memory
446868 2021-07-23T15:26:48 Z ivan_tudor Event Hopping 2 (JOI21_event2) C++14
100 / 100
 299 ms 26296 KB 
#include<bits/stdc++.h>
using namespace std;
const int N = 100005;
struct Intervale{
  int l, r;
  bool operator < (Intervale oth) const{
    return r < oth.r;
  }
};
struct Nodes{
  int h;
  int id;
  Nodes *jump;
  Nodes *par;
};
Nodes *poz[2 * N];
void add_leaf(int dad, int son){
  poz[son] = new Nodes;
  poz[son] ->id = son;
  poz[son]->h = poz[dad]->h + 1;
  poz[son]->par = poz[dad];
  if(poz[dad]->h - poz[dad]->jump->h == poz[dad]->jump->h - poz[dad]->jump->jump->h)
    poz[son]->jump = poz[dad]->jump->jump;
  else
    poz[son]->jump = poz[dad];
}
int longest_subseq(int l, int r){
  Nodes *nod = poz[r];
  int ans = 0;
  while(nod->id >= l && nod->par != NULL){
    if(nod->jump->id >= l){
      ans += nod->h - nod->jump->h;
      nod = nod->jump;
    }
    else{
      nod = nod->par;
      ans ++;
    }
  }
  if(nod ->id < l)
    ans--;
  return ans;
}
Intervale itv[N];
Intervale citv[N];
int main()
{
  //freopen(".in","r",stdin);
  ios::sync_with_stdio(false);
  cin.tie(0),cout.tie(0);
  int n, k;
  cin>>n>>k;
  map<int, int> normal;
  for(int i = 1; i<=n; i++){
    cin>>itv[i].l>>itv[i].r;
    normal[itv[i].l] = 1;
    normal[itv[i].r] = 1;
  }
  int val = 0;
  for(auto &x:normal)
    x.second = ++val;
  for(int i = 1; i <=n; i++){
    itv[i].l = normal[itv[i].l];
    itv[i].r = normal[itv[i].r];
    citv[i] = itv[i];
  }
  sort(itv + 1, itv + n + 1);
  int lpoz = -1;
  int j = 1;
  for(int i = 1; i <= val; i++){
    while(j <=n && itv[j].r == i){
      lpoz = max(lpoz, itv[j].l);
      j++;
    }
    if(lpoz != -1){
      add_leaf(lpoz, i);
    }
    else{
      poz[i] = new Nodes;
      poz[i]->h = 0;
      poz[i]->id = i;
      poz[i]->par = NULL;
      poz[i]->jump = poz[i];
    }
  }
  set<Intervale> free;
  free.insert({1, val});
  vector<int> ans;
  int cur = longest_subseq(1, val);
  for(int i = 1 ; i <= n; i++){
    itv[i] = citv[i];
    if(ans.size() == k)
      break;
    auto itr = free.lower_bound(itv[i]);
    if(itr == free.end())
      continue;
    Intervale found = (*itr);
    if(found.l <= itv[i].l && itv[i].r <= found.r){
      int newcur = cur - longest_subseq(found.l, found.r);
      Intervale st = {found.l, itv[i].l};
      if(st.l < st.r)
        newcur += longest_subseq(st.l, st.r);
      Intervale dr = {itv[i].r, found.r};
      if(dr.l < dr.r)
        newcur += longest_subseq(dr.l, dr.r);
      newcur++;
      if(newcur >= k){
        ans.push_back(i);
        free.erase(found);
        if(st.l < st.r)
          free.insert(st);
        if(dr.l < dr.r)
          free.insert(dr);
        cur = newcur;
      }
    }
  }
  if(ans.size() < k){
    cout<<-1;
    return 0 ;
  }
  for(auto x:ans)
    cout<<x<<"\n";
  return 0;
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:92:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   92 |     if(ans.size() == k)
      |        ~~~~~~~~~~~^~~~
event2.cpp:118:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  118 |   if(ans.size() < k){
      |      ~~~~~~~~~~~^~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 181 ms 24292 KB Output is correct
5 Correct 180 ms 26044 KB Output is correct
6 Correct 176 ms 25688 KB Output is correct
7 Correct 161 ms 25272 KB Output is correct
8 Correct 197 ms 26296 KB Output is correct
9 Correct 179 ms 26012 KB Output is correct
10 Correct 179 ms 25788 KB Output is correct
11 Correct 182 ms 25300 KB Output is correct
12 Correct 138 ms 24200 KB Output is correct
13 Correct 139 ms 24020 KB Output is correct
14 Correct 136 ms 23880 KB Output is correct
15 Correct 131 ms 23616 KB Output is correct
16 Correct 103 ms 21692 KB Output is correct
17 Correct 104 ms 21616 KB Output is correct
18 Correct 99 ms 21572 KB Output is correct
19 Correct 102 ms 21048 KB Output is correct
20 Correct 103 ms 21108 KB Output is correct
21 Correct 98 ms 21060 KB Output is correct
22 Correct 108 ms 20984 KB Output is correct
23 Correct 109 ms 20932 KB Output is correct
24 Correct 109 ms 21020 KB Output is correct
25 Correct 129 ms 21028 KB Output is correct
26 Correct 128 ms 20920 KB Output is correct
27 Correct 134 ms 20960 KB Output is correct
28 Correct 107 ms 20932 KB Output is correct
29 Correct 98 ms 20932 KB Output is correct
30 Correct 97 ms 21060 KB Output is correct
31 Correct 102 ms 20992 KB Output is correct
32 Correct 112 ms 20928 KB Output is correct
33 Correct 132 ms 20932 KB Output is correct
34 Correct 118 ms 22960 KB Output is correct
35 Correct 109 ms 22264 KB Output is correct
36 Correct 115 ms 21572 KB Output is correct
37 Correct 168 ms 23772 KB Output is correct
38 Correct 156 ms 23660 KB Output is correct
39 Correct 155 ms 23652 KB Output is correct
40 Correct 151 ms 23528 KB Output is correct
41 Correct 147 ms 23336 KB Output is correct
42 Correct 111 ms 21020 KB Output is correct
43 Correct 144 ms 23700 KB Output is correct
44 Correct 139 ms 23588 KB Output is correct
45 Correct 133 ms 23404 KB Output is correct
46 Correct 143 ms 23368 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 280 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 0 ms 324 KB Output is correct
27 Correct 0 ms 332 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 0 ms 280 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 0 ms 320 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 0 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 0 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 0 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 0 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 0 ms 324 KB Output is correct
27 Correct 0 ms 332 KB Output is correct
28 Correct 4 ms 844 KB Output is correct
29 Correct 4 ms 844 KB Output is correct
30 Correct 4 ms 844 KB Output is correct
31 Correct 4 ms 844 KB Output is correct
32 Correct 4 ms 844 KB Output is correct
33 Correct 5 ms 844 KB Output is correct
34 Correct 4 ms 844 KB Output is correct
35 Correct 7 ms 1100 KB Output is correct
36 Correct 5 ms 1100 KB Output is correct
37 Correct 5 ms 972 KB Output is correct
38 Correct 4 ms 844 KB Output is correct
39 Correct 6 ms 1100 KB Output is correct
40 Correct 5 ms 972 KB Output is correct
41 Correct 5 ms 972 KB Output is correct
42 Correct 4 ms 844 KB Output is correct
43 Correct 4 ms 972 KB Output is correct
44 Correct 5 ms 932 KB Output is correct
45 Correct 4 ms 972 KB Output is correct
46 Correct 4 ms 844 KB Output is correct
47 Correct 4 ms 848 KB Output is correct
48 Correct 4 ms 844 KB Output is correct
49 Correct 4 ms 844 KB Output is correct
50 Correct 4 ms 844 KB Output is correct
51 Correct 4 ms 844 KB Output is correct
52 Correct 4 ms 844 KB Output is correct
53 Correct 4 ms 844 KB Output is correct
54 Correct 4 ms 844 KB Output is correct
55 Correct 3 ms 716 KB Output is correct
56 Correct 3 ms 716 KB Output is correct
57 Correct 3 ms 716 KB Output is correct
58 Correct 3 ms 716 KB Output is correct
59 Correct 3 ms 716 KB Output is correct
60 Correct 3 ms 716 KB Output is correct
61 Correct 3 ms 716 KB Output is correct
62 Correct 3 ms 716 KB Output is correct
63 Correct 3 ms 716 KB Output is correct
64 Correct 3 ms 588 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 181 ms 24292 KB Output is correct
5 Correct 180 ms 26044 KB Output is correct
6 Correct 176 ms 25688 KB Output is correct
7 Correct 161 ms 25272 KB Output is correct
8 Correct 197 ms 26296 KB Output is correct
9 Correct 179 ms 26012 KB Output is correct
10 Correct 179 ms 25788 KB Output is correct
11 Correct 182 ms 25300 KB Output is correct
12 Correct 138 ms 24200 KB Output is correct
13 Correct 139 ms 24020 KB Output is correct
14 Correct 136 ms 23880 KB Output is correct
15 Correct 131 ms 23616 KB Output is correct
16 Correct 103 ms 21692 KB Output is correct
17 Correct 104 ms 21616 KB Output is correct
18 Correct 99 ms 21572 KB Output is correct
19 Correct 102 ms 21048 KB Output is correct
20 Correct 103 ms 21108 KB Output is correct
21 Correct 98 ms 21060 KB Output is correct
22 Correct 108 ms 20984 KB Output is correct
23 Correct 109 ms 20932 KB Output is correct
24 Correct 109 ms 21020 KB Output is correct
25 Correct 129 ms 21028 KB Output is correct
26 Correct 128 ms 20920 KB Output is correct
27 Correct 134 ms 20960 KB Output is correct
28 Correct 107 ms 20932 KB Output is correct
29 Correct 98 ms 20932 KB Output is correct
30 Correct 97 ms 21060 KB Output is correct
31 Correct 102 ms 20992 KB Output is correct
32 Correct 112 ms 20928 KB Output is correct
33 Correct 132 ms 20932 KB Output is correct
34 Correct 118 ms 22960 KB Output is correct
35 Correct 109 ms 22264 KB Output is correct
36 Correct 115 ms 21572 KB Output is correct
37 Correct 168 ms 23772 KB Output is correct
38 Correct 156 ms 23660 KB Output is correct
39 Correct 155 ms 23652 KB Output is correct
40 Correct 151 ms 23528 KB Output is correct
41 Correct 147 ms 23336 KB Output is correct
42 Correct 111 ms 21020 KB Output is correct
43 Correct 144 ms 23700 KB Output is correct
44 Correct 139 ms 23588 KB Output is correct
45 Correct 133 ms 23404 KB Output is correct
46 Correct 143 ms 23368 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 0 ms 204 KB Output is correct
49 Correct 0 ms 332 KB Output is correct
50 Correct 0 ms 280 KB Output is correct
51 Correct 0 ms 332 KB Output is correct
52 Correct 0 ms 320 KB Output is correct
53 Correct 1 ms 332 KB Output is correct
54 Correct 1 ms 332 KB Output is correct
55 Correct 1 ms 332 KB Output is correct
56 Correct 1 ms 332 KB Output is correct
57 Correct 0 ms 332 KB Output is correct
58 Correct 1 ms 332 KB Output is correct
59 Correct 1 ms 332 KB Output is correct
60 Correct 1 ms 332 KB Output is correct
61 Correct 0 ms 332 KB Output is correct
62 Correct 1 ms 332 KB Output is correct
63 Correct 1 ms 332 KB Output is correct
64 Correct 0 ms 332 KB Output is correct
65 Correct 1 ms 332 KB Output is correct
66 Correct 1 ms 332 KB Output is correct
67 Correct 1 ms 332 KB Output is correct
68 Correct 1 ms 332 KB Output is correct
69 Correct 1 ms 332 KB Output is correct
70 Correct 0 ms 332 KB Output is correct
71 Correct 1 ms 332 KB Output is correct
72 Correct 0 ms 324 KB Output is correct
73 Correct 0 ms 332 KB Output is correct
74 Correct 4 ms 844 KB Output is correct
75 Correct 4 ms 844 KB Output is correct
76 Correct 4 ms 844 KB Output is correct
77 Correct 4 ms 844 KB Output is correct
78 Correct 4 ms 844 KB Output is correct
79 Correct 5 ms 844 KB Output is correct
80 Correct 4 ms 844 KB Output is correct
81 Correct 7 ms 1100 KB Output is correct
82 Correct 5 ms 1100 KB Output is correct
83 Correct 5 ms 972 KB Output is correct
84 Correct 4 ms 844 KB Output is correct
85 Correct 6 ms 1100 KB Output is correct
86 Correct 5 ms 972 KB Output is correct
87 Correct 5 ms 972 KB Output is correct
88 Correct 4 ms 844 KB Output is correct
89 Correct 4 ms 972 KB Output is correct
90 Correct 5 ms 932 KB Output is correct
91 Correct 4 ms 972 KB Output is correct
92 Correct 4 ms 844 KB Output is correct
93 Correct 4 ms 848 KB Output is correct
94 Correct 4 ms 844 KB Output is correct
95 Correct 4 ms 844 KB Output is correct
96 Correct 4 ms 844 KB Output is correct
97 Correct 4 ms 844 KB Output is correct
98 Correct 4 ms 844 KB Output is correct
99 Correct 4 ms 844 KB Output is correct
100 Correct 4 ms 844 KB Output is correct
101 Correct 3 ms 716 KB Output is correct
102 Correct 3 ms 716 KB Output is correct
103 Correct 3 ms 716 KB Output is correct
104 Correct 3 ms 716 KB Output is correct
105 Correct 3 ms 716 KB Output is correct
106 Correct 3 ms 716 KB Output is correct
107 Correct 3 ms 716 KB Output is correct
108 Correct 3 ms 716 KB Output is correct
109 Correct 3 ms 716 KB Output is correct
110 Correct 3 ms 588 KB Output is correct
111 Correct 273 ms 21124 KB Output is correct
112 Correct 284 ms 21044 KB Output is correct
113 Correct 237 ms 20936 KB Output is correct
114 Correct 263 ms 21084 KB Output is correct
115 Correct 249 ms 20972 KB Output is correct
116 Correct 273 ms 20932 KB Output is correct
117 Correct 295 ms 21128 KB Output is correct
118 Correct 299 ms 26284 KB Output is correct
119 Correct 299 ms 25732 KB Output is correct
120 Correct 242 ms 23612 KB Output is correct
121 Correct 239 ms 21012 KB Output is correct
122 Correct 258 ms 24256 KB Output is correct
123 Correct 248 ms 23856 KB Output is correct
124 Correct 247 ms 23616 KB Output is correct
125 Correct 242 ms 21016 KB Output is correct
126 Correct 225 ms 21700 KB Output is correct
127 Correct 245 ms 21676 KB Output is correct
128 Correct 229 ms 21600 KB Output is correct
129 Correct 264 ms 20968 KB Output is correct
130 Correct 236 ms 21108 KB Output is correct
131 Correct 266 ms 21328 KB Output is correct
132 Correct 233 ms 21188 KB Output is correct
133 Correct 249 ms 21012 KB Output is correct
134 Correct 242 ms 21156 KB Output is correct
135 Correct 232 ms 20964 KB Output is correct
136 Correct 234 ms 20932 KB Output is correct
137 Correct 255 ms 21136 KB Output is correct
138 Correct 268 ms 20984 KB Output is correct
139 Correct 258 ms 21016 KB Output is correct
140 Correct 242 ms 21112 KB Output is correct
141 Correct 243 ms 20932 KB Output is correct
142 Correct 123 ms 13508 KB Output is correct
143 Correct 119 ms 13508 KB Output is correct
144 Correct 120 ms 13460 KB Output is correct
145 Correct 118 ms 13496 KB Output is correct
146 Correct 116 ms 13488 KB Output is correct
147 Correct 124 ms 13556 KB Output is correct
148 Correct 121 ms 13644 KB Output is correct
149 Correct 112 ms 13496 KB Output is correct
150 Correct 111 ms 13532 KB Output is correct
151 Correct 112 ms 13392 KB Output is correct
152 Correct 111 ms 12508 KB Output is correct
153 Correct 122 ms 13504 KB Output is correct
154 Correct 122 ms 13560 KB Output is correct
155 Correct 120 ms 13476 KB Output is correct
156 Correct 119 ms 13432 KB Output is correct
157 Correct 116 ms 13372 KB Output is correct
158 Correct 115 ms 13516 KB Output is correct
159 Correct 115 ms 13372 KB Output is correct
160 Correct 96 ms 12440 KB Output is correct
161 Correct 227 ms 18976 KB Output is correct
162 Correct 216 ms 18792 KB Output is correct
163 Correct 230 ms 18800 KB Output is correct
164 Correct 213 ms 18748 KB Output is correct
165 Correct 204 ms 18620 KB Output is correct
166 Correct 111 ms 20932 KB Output is correct
167 Correct 143 ms 23748 KB Output is correct
168 Correct 137 ms 23648 KB Output is correct
169 Correct 136 ms 23472 KB Output is correct
170 Correct 136 ms 23328 KB Output is correct
171 Correct 157 ms 23104 KB Output is correct
172 Correct 148 ms 23840 KB Output is correct
173 Correct 183 ms 13508 KB Output is correct
174 Correct 223 ms 13504 KB Output is correct
175 Correct 174 ms 13536 KB Output is correct
176 Correct 172 ms 13632 KB Output is correct