oj.uz

답안 #474452

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
474452 2021-09-18T09:26:14 Z Pety Event Hopping 2 (JOI21_event2) C++14
100 / 100
 272 ms 23960 KB 
#include <bits/stdc++.h>
#define ll long long
#define ld long double

using namespace std;

int n, k, dp[20][200004];
pair<int, int>event[100002];

int dist (int l, int r) {
  l = max(0, l);
  int ans = 0;
  for (int i = 18; i >= 0; i--) {
    if (dp[i][l] <= r) {
      l = dp[i][l];
      ans += (1 << i);
    }
  }
  return ans;
}

int main()
{
  ios_base::sync_with_stdio(false);
  cin.tie(0); cout.tie(0);
  cin >> n >> k;
  vector<int>norm;
  for (int i = 1; i <= n; i++)  {
    int a, b;
    cin >> a >> b;
    event[i] = {a, b};
    norm.push_back(a);
    norm.push_back(b);
  }
  sort(norm.begin(), norm.end());
  int aux = 0;
  for (int i = 0; i < norm.size(); i++) {
    if (i == 0 || norm[i - 1] != norm[i]) {
      norm[aux++] = norm[i];
    }
  }
  norm.resize(aux);
  for (int i = 0; i < aux + 1; i++) {
    dp[0][i] = aux + 1;
  }
  for (int i = 0; i <= 18; i++)
    dp[i][aux + 1] = aux + 1;
  for (int i = 1; i <= n; i++) {
    event[i].first = lower_bound(norm.begin(), norm.end(), event[i].first) - norm.begin();
    event[i].second = lower_bound(norm.begin(), norm.end(), event[i].second) - norm.begin();
    dp[0][event[i].first] = min(dp[0][event[i].first], event[i].second); 
  }
  for (int i = aux - 1; i >= 0; i--) {
    dp[0][i] = min(dp[0][i], dp[0][i + 1]);
    for (int j = 1; j <= 18; j++) {
      dp[j][i] = dp[j - 1][dp[j - 1][i]];
    }
  }
  set<pair<int, int> > s;
  s.insert({-1, -1});
  s.insert({aux, aux});
  int sum = dist(0, aux - 1);
  int newsum;
  vector<int>ans;
  for (int i = 1; i <= n; i++) {
    pair<int, int>p = event[i];
    auto it = s.lower_bound({p.first, 0});
    auto it2 = it;
    it2--;
    if (p.second > it->first || p.first < it2->second)
      continue;

    newsum = sum - dist(it2->second, it->first) + dist(it2->second, p.first) + dist(p.second, it->first) + 1;
    if (newsum >= k) {
      s.insert(p);
      sum = newsum;
      ans.push_back(i);
    }
    if (ans.size() == k)
     break; 
  }
  if ( ans.size() == k)
    for (auto it : ans) {
      cout << it << "\n";
    }
  else 
    cout << "-1\n";
  return 0;
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:37:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |   for (int i = 0; i < norm.size(); i++) {
      |                   ~~^~~~~~~~~~~~~
event2.cpp:79:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   79 |     if (ans.size() == k)
      |         ~~~~~~~~~~~^~~~
event2.cpp:82:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   82 |   if ( ans.size() == k)
      |        ~~~~~~~~~~~^~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 118 ms 22020 KB Output is correct
5 Correct 120 ms 23632 KB Output is correct
6 Correct 134 ms 23360 KB Output is correct
7 Correct 132 ms 22916 KB Output is correct
8 Correct 119 ms 23960 KB Output is correct
9 Correct 114 ms 23612 KB Output is correct
10 Correct 139 ms 23512 KB Output is correct
11 Correct 104 ms 22816 KB Output is correct
12 Correct 116 ms 21920 KB Output is correct
13 Correct 98 ms 21700 KB Output is correct
14 Correct 97 ms 21616 KB Output is correct
15 Correct 90 ms 21284 KB Output is correct
16 Correct 71 ms 19360 KB Output is correct
17 Correct 72 ms 19304 KB Output is correct
18 Correct 81 ms 19188 KB Output is correct
19 Correct 66 ms 18808 KB Output is correct
20 Correct 84 ms 18732 KB Output is correct
21 Correct 85 ms 18796 KB Output is correct
22 Correct 68 ms 18780 KB Output is correct
23 Correct 85 ms 18792 KB Output is correct
24 Correct 68 ms 18780 KB Output is correct
25 Correct 78 ms 18836 KB Output is correct
26 Correct 72 ms 18788 KB Output is correct
27 Correct 70 ms 18800 KB Output is correct
28 Correct 87 ms 18812 KB Output is correct
29 Correct 73 ms 18780 KB Output is correct
30 Correct 73 ms 18808 KB Output is correct
31 Correct 73 ms 18684 KB Output is correct
32 Correct 92 ms 18820 KB Output is correct
33 Correct 103 ms 18804 KB Output is correct
34 Correct 80 ms 20592 KB Output is correct
35 Correct 71 ms 19928 KB Output is correct
36 Correct 92 ms 19312 KB Output is correct
37 Correct 99 ms 21476 KB Output is correct
38 Correct 93 ms 21336 KB Output is correct
39 Correct 92 ms 21312 KB Output is correct
40 Correct 88 ms 21184 KB Output is correct
41 Correct 86 ms 21000 KB Output is correct
42 Correct 86 ms 18744 KB Output is correct
43 Correct 109 ms 21312 KB Output is correct
44 Correct 103 ms 21212 KB Output is correct
45 Correct 131 ms 21100 KB Output is correct
46 Correct 103 ms 21012 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 316 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 1 ms 320 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 1 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 1 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 312 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 320 KB Output is correct
27 Correct 1 ms 332 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 0 ms 332 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 316 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 1 ms 320 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 1 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 1 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 312 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 320 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 3 ms 972 KB Output is correct
29 Correct 4 ms 920 KB Output is correct
30 Correct 3 ms 968 KB Output is correct
31 Correct 3 ms 972 KB Output is correct
32 Correct 3 ms 972 KB Output is correct
33 Correct 3 ms 972 KB Output is correct
34 Correct 4 ms 980 KB Output is correct
35 Correct 4 ms 1108 KB Output is correct
36 Correct 4 ms 1112 KB Output is correct
37 Correct 4 ms 1112 KB Output is correct
38 Correct 3 ms 984 KB Output is correct
39 Correct 6 ms 1112 KB Output is correct
40 Correct 6 ms 1112 KB Output is correct
41 Correct 4 ms 1084 KB Output is correct
42 Correct 5 ms 992 KB Output is correct
43 Correct 5 ms 1048 KB Output is correct
44 Correct 3 ms 984 KB Output is correct
45 Correct 5 ms 984 KB Output is correct
46 Correct 4 ms 984 KB Output is correct
47 Correct 4 ms 984 KB Output is correct
48 Correct 4 ms 984 KB Output is correct
49 Correct 4 ms 984 KB Output is correct
50 Correct 5 ms 984 KB Output is correct
51 Correct 3 ms 984 KB Output is correct
52 Correct 3 ms 972 KB Output is correct
53 Correct 3 ms 972 KB Output is correct
54 Correct 3 ms 972 KB Output is correct
55 Correct 3 ms 844 KB Output is correct
56 Correct 3 ms 924 KB Output is correct
57 Correct 3 ms 844 KB Output is correct
58 Correct 3 ms 844 KB Output is correct
59 Correct 3 ms 844 KB Output is correct
60 Correct 4 ms 912 KB Output is correct
61 Correct 4 ms 844 KB Output is correct
62 Correct 3 ms 844 KB Output is correct
63 Correct 3 ms 844 KB Output is correct
64 Correct 3 ms 716 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 118 ms 22020 KB Output is correct
5 Correct 120 ms 23632 KB Output is correct
6 Correct 134 ms 23360 KB Output is correct
7 Correct 132 ms 22916 KB Output is correct
8 Correct 119 ms 23960 KB Output is correct
9 Correct 114 ms 23612 KB Output is correct
10 Correct 139 ms 23512 KB Output is correct
11 Correct 104 ms 22816 KB Output is correct
12 Correct 116 ms 21920 KB Output is correct
13 Correct 98 ms 21700 KB Output is correct
14 Correct 97 ms 21616 KB Output is correct
15 Correct 90 ms 21284 KB Output is correct
16 Correct 71 ms 19360 KB Output is correct
17 Correct 72 ms 19304 KB Output is correct
18 Correct 81 ms 19188 KB Output is correct
19 Correct 66 ms 18808 KB Output is correct
20 Correct 84 ms 18732 KB Output is correct
21 Correct 85 ms 18796 KB Output is correct
22 Correct 68 ms 18780 KB Output is correct
23 Correct 85 ms 18792 KB Output is correct
24 Correct 68 ms 18780 KB Output is correct
25 Correct 78 ms 18836 KB Output is correct
26 Correct 72 ms 18788 KB Output is correct
27 Correct 70 ms 18800 KB Output is correct
28 Correct 87 ms 18812 KB Output is correct
29 Correct 73 ms 18780 KB Output is correct
30 Correct 73 ms 18808 KB Output is correct
31 Correct 73 ms 18684 KB Output is correct
32 Correct 92 ms 18820 KB Output is correct
33 Correct 103 ms 18804 KB Output is correct
34 Correct 80 ms 20592 KB Output is correct
35 Correct 71 ms 19928 KB Output is correct
36 Correct 92 ms 19312 KB Output is correct
37 Correct 99 ms 21476 KB Output is correct
38 Correct 93 ms 21336 KB Output is correct
39 Correct 92 ms 21312 KB Output is correct
40 Correct 88 ms 21184 KB Output is correct
41 Correct 86 ms 21000 KB Output is correct
42 Correct 86 ms 18744 KB Output is correct
43 Correct 109 ms 21312 KB Output is correct
44 Correct 103 ms 21212 KB Output is correct
45 Correct 131 ms 21100 KB Output is correct
46 Correct 103 ms 21012 KB Output is correct
47 Correct 0 ms 332 KB Output is correct
48 Correct 1 ms 332 KB Output is correct
49 Correct 1 ms 336 KB Output is correct
50 Correct 0 ms 332 KB Output is correct
51 Correct 1 ms 332 KB Output is correct
52 Correct 1 ms 316 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 1 ms 320 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 1 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 1 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 312 KB Output is correct
68 Correct 1 ms 332 KB Output is correct
69 Correct 1 ms 332 KB Output is correct
70 Correct 1 ms 332 KB Output is correct
71 Correct 1 ms 332 KB Output is correct
72 Correct 1 ms 320 KB Output is correct
73 Correct 1 ms 332 KB Output is correct
74 Correct 3 ms 972 KB Output is correct
75 Correct 4 ms 920 KB Output is correct
76 Correct 3 ms 968 KB Output is correct
77 Correct 3 ms 972 KB Output is correct
78 Correct 3 ms 972 KB Output is correct
79 Correct 3 ms 972 KB Output is correct
80 Correct 4 ms 980 KB Output is correct
81 Correct 4 ms 1108 KB Output is correct
82 Correct 4 ms 1112 KB Output is correct
83 Correct 4 ms 1112 KB Output is correct
84 Correct 3 ms 984 KB Output is correct
85 Correct 6 ms 1112 KB Output is correct
86 Correct 6 ms 1112 KB Output is correct
87 Correct 4 ms 1084 KB Output is correct
88 Correct 5 ms 992 KB Output is correct
89 Correct 5 ms 1048 KB Output is correct
90 Correct 3 ms 984 KB Output is correct
91 Correct 5 ms 984 KB Output is correct
92 Correct 4 ms 984 KB Output is correct
93 Correct 4 ms 984 KB Output is correct
94 Correct 4 ms 984 KB Output is correct
95 Correct 4 ms 984 KB Output is correct
96 Correct 5 ms 984 KB Output is correct
97 Correct 3 ms 984 KB Output is correct
98 Correct 3 ms 972 KB Output is correct
99 Correct 3 ms 972 KB Output is correct
100 Correct 3 ms 972 KB Output is correct
101 Correct 3 ms 844 KB Output is correct
102 Correct 3 ms 924 KB Output is correct
103 Correct 3 ms 844 KB Output is correct
104 Correct 3 ms 844 KB Output is correct
105 Correct 3 ms 844 KB Output is correct
106 Correct 4 ms 912 KB Output is correct
107 Correct 4 ms 844 KB Output is correct
108 Correct 3 ms 844 KB Output is correct
109 Correct 3 ms 844 KB Output is correct
110 Correct 3 ms 716 KB Output is correct
111 Correct 94 ms 18796 KB Output is correct
112 Correct 91 ms 18712 KB Output is correct
113 Correct 90 ms 18824 KB Output is correct
114 Correct 91 ms 18796 KB Output is correct
115 Correct 113 ms 18744 KB Output is correct
116 Correct 124 ms 18696 KB Output is correct
117 Correct 122 ms 18780 KB Output is correct
118 Correct 272 ms 23912 KB Output is correct
119 Correct 212 ms 23400 KB Output is correct
120 Correct 153 ms 21216 KB Output is correct
121 Correct 164 ms 18764 KB Output is correct
122 Correct 197 ms 21968 KB Output is correct
123 Correct 195 ms 21620 KB Output is correct
124 Correct 149 ms 21224 KB Output is correct
125 Correct 164 ms 18776 KB Output is correct
126 Correct 122 ms 19360 KB Output is correct
127 Correct 111 ms 19264 KB Output is correct
128 Correct 111 ms 19160 KB Output is correct
129 Correct 139 ms 18816 KB Output is correct
130 Correct 103 ms 18784 KB Output is correct
131 Correct 98 ms 18784 KB Output is correct
132 Correct 96 ms 18816 KB Output is correct
133 Correct 129 ms 18776 KB Output is correct
134 Correct 102 ms 18804 KB Output is correct
135 Correct 112 ms 18796 KB Output is correct
136 Correct 91 ms 18800 KB Output is correct
137 Correct 130 ms 18784 KB Output is correct
138 Correct 93 ms 18804 KB Output is correct
139 Correct 98 ms 18848 KB Output is correct
140 Correct 89 ms 18880 KB Output is correct
141 Correct 137 ms 18808 KB Output is correct
142 Correct 109 ms 16912 KB Output is correct
143 Correct 113 ms 16960 KB Output is correct
144 Correct 110 ms 17008 KB Output is correct
145 Correct 95 ms 16968 KB Output is correct
146 Correct 98 ms 16812 KB Output is correct
147 Correct 95 ms 16716 KB Output is correct
148 Correct 92 ms 16700 KB Output is correct
149 Correct 109 ms 16580 KB Output is correct
150 Correct 104 ms 16468 KB Output is correct
151 Correct 86 ms 15892 KB Output is correct
152 Correct 90 ms 11456 KB Output is correct
153 Correct 112 ms 16932 KB Output is correct
154 Correct 95 ms 16856 KB Output is correct
155 Correct 93 ms 16700 KB Output is correct
156 Correct 113 ms 16688 KB Output is correct
157 Correct 96 ms 16564 KB Output is correct
158 Correct 116 ms 16436 KB Output is correct
159 Correct 92 ms 15824 KB Output is correct
160 Correct 64 ms 11456 KB Output is correct
161 Correct 173 ms 17848 KB Output is correct
162 Correct 151 ms 17748 KB Output is correct
163 Correct 139 ms 17580 KB Output is correct
164 Correct 145 ms 17464 KB Output is correct
165 Correct 137 ms 17408 KB Output is correct
166 Correct 78 ms 18780 KB Output is correct
167 Correct 138 ms 21380 KB Output is correct
168 Correct 98 ms 21284 KB Output is correct
169 Correct 110 ms 21168 KB Output is correct
170 Correct 108 ms 21100 KB Output is correct
171 Correct 91 ms 20796 KB Output is correct
172 Correct 98 ms 21440 KB Output is correct
173 Correct 167 ms 14124 KB Output is correct
174 Correct 157 ms 14084 KB Output is correct
175 Correct 153 ms 14060 KB Output is correct
176 Correct 120 ms 13508 KB Output is correct