oj.uz

답안 #995963

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
995963 2024-06-10T06:18:05 Z snpmrnhlol Event Hopping 2 (JOI21_event2) C++17
100 / 100
 189 ms 28960 KB 
#include<bits/stdc++.h>
using namespace std;
const int N = 2e5;
const int logN = 20;
const int inf = 2e9;
vector <int> ans;
struct range{
    int l,r,id;
}v[N];
int p[N];
int jump[N][logN];
int mx[N][logN];
int query(int l, int r){
    int nr = 31 - __builtin_clz(r - l + 1);
    return max(mx[l][nr],mx[r - (1<<nr) + 1][nr]);
}
int n,k;
int calc(int ql,int qr){
    int l = 0,r = n;
    while(l != r){
        int mij = (l + r)/2;
        if(query(0,mij) >= ql){
            r = mij;
        }else l = mij + 1;
    }
    //cout<<"calc:"<<ql<<' '<<qr<<' ';
    if(l == n || v[l].r > qr){
        //cout<<0<<'\n';
        return 0;
    }
    int ans = 1;
    for(int i = logN - 1;i >= 0;i--){
        if(jump[l][i] != n && v[jump[l][i]].r <= qr){
            ans+=(1<<i);
            l = jump[l][i];
        }
    }
    //cout<<ans<<'\n';
    return ans;
}
map <int,int> segments;
int main(){
    cin>>n>>k;
    for(int i = 0;i < n;i++){
        cin>>v[i].l>>v[i].r;
        v[i].r--;
        v[i].id = i;
    }
    sort(v, v + n, [&](range a,range b){
         return a.r < b.r;
    });
    for(int i = 0;i < n;i++){
        p[v[i].id] = i;
        mx[i][0] = v[i].l;
    }
    for(int j = 1;j < logN;j++){
        for(int i = 0;i < n - (1<<j) + 1;i++){
            mx[i][j] = max(mx[i][j - 1],mx[i + (1<<(j - 1))][j - 1]);
        }
    }
    for(int i = 0;i < n;i++){
        int l = i + 1,r = n;
        while(l != r){
            int mij = (l + r)/2;
            if(query(0,mij) > v[i].r){
                r = mij;
            }else l = mij + 1;
        }
        jump[i][0] = l;
    }
    for(int j = 1;j < logN;j++){
        for(int i = 0;i < n;i++){
            if(jump[i][j - 1] == n)jump[i][j] = n;
            else jump[i][j] = jump[jump[i][j - 1]][j - 1];
        }
    }
    segments[0] = 0;
    segments[inf] = inf;
    int cur = calc(0,inf);
    for(int i = 0;i < n;i++){
        int id = p[i];
        //cout<<v[id].l<<' '<<v[id].r<<' '<<cur<<'\n';
        auto it = segments.lower_bound(v[id].l);
        bool ok = 1;
        if(prev(it)->second >= v[id].l){
            ok = 0;
        }
        if(it->first <= v[id].r){
            ok = 0;
        }
        if(!ok)continue;
        int sv = cur;
        cur-=calc(prev(it)->second + 1,it->first - 1);
        cur+=calc(prev(it)->second + 1,v[id].l - 1);
        cur+=calc(v[id].r + 1,it->first - 1);
        cur++;
        //cout<<"consideration:"<<sv<<' '<<cur<<' '<<i<<'\n';
        if(cur >= k){
            //cout<<"add\n";
            ans.push_back(i + 1);
            segments[v[id].l] = v[id].r;
        }else cur = sv;
    }
    if(ans.size() >= k){
        for(int i = 0;i < k;i++){
            cout<<ans[i]<<'\n';
        }
    }else cout<<-1<<'\n';
    return 0;
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:104:19: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  104 |     if(ans.size() >= k){
      |        ~~~~~~~~~~~^~~~

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 144 ms 28440 KB Output is correct
5 Correct 145 ms 28364 KB Output is correct
6 Correct 144 ms 28360 KB Output is correct
7 Correct 145 ms 28316 KB Output is correct
8 Correct 147 ms 28360 KB Output is correct
9 Correct 145 ms 28364 KB Output is correct
10 Correct 165 ms 28368 KB Output is correct
11 Correct 155 ms 28360 KB Output is correct
12 Correct 122 ms 26572 KB Output is correct
13 Correct 129 ms 26316 KB Output is correct
14 Correct 120 ms 26528 KB Output is correct
15 Correct 122 ms 26272 KB Output is correct
16 Correct 87 ms 23892 KB Output is correct
17 Correct 84 ms 23892 KB Output is correct
18 Correct 82 ms 23892 KB Output is correct
19 Correct 76 ms 23188 KB Output is correct
20 Correct 75 ms 23384 KB Output is correct
21 Correct 75 ms 23204 KB Output is correct
22 Correct 75 ms 23120 KB Output is correct
23 Correct 76 ms 23192 KB Output is correct
24 Correct 72 ms 23204 KB Output is correct
25 Correct 76 ms 23304 KB Output is correct
26 Correct 76 ms 23120 KB Output is correct
27 Correct 72 ms 23124 KB Output is correct
28 Correct 126 ms 23304 KB Output is correct
29 Correct 125 ms 23204 KB Output is correct
30 Correct 122 ms 23124 KB Output is correct
31 Correct 128 ms 23124 KB Output is correct
32 Correct 119 ms 23128 KB Output is correct
33 Correct 131 ms 23208 KB Output is correct
34 Correct 120 ms 26320 KB Output is correct
35 Correct 119 ms 26316 KB Output is correct
36 Correct 120 ms 26060 KB Output is correct
37 Correct 111 ms 26004 KB Output is correct
38 Correct 112 ms 26012 KB Output is correct
39 Correct 119 ms 26060 KB Output is correct
40 Correct 109 ms 26124 KB Output is correct
41 Correct 114 ms 26012 KB Output is correct
42 Correct 126 ms 23124 KB Output is correct
43 Correct 115 ms 25888 KB Output is correct
44 Correct 112 ms 25804 KB Output is correct
45 Correct 108 ms 25808 KB Output is correct
46 Correct 123 ms 25512 KB Output is correct

Subtask #2
1.0 / 1.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4696 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4540 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4440 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4504 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4696 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4440 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4540 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 1 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4444 KB Output is correct
14 Correct 1 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4444 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4444 KB Output is correct
19 Correct 1 ms 4440 KB Output is correct
20 Correct 1 ms 4444 KB Output is correct
21 Correct 1 ms 4444 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 1 ms 4444 KB Output is correct
24 Correct 1 ms 4444 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4504 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 3 ms 6748 KB Output is correct
29 Correct 3 ms 6748 KB Output is correct
30 Correct 3 ms 6748 KB Output is correct
31 Correct 3 ms 6748 KB Output is correct
32 Correct 3 ms 6748 KB Output is correct
33 Correct 4 ms 6596 KB Output is correct
34 Correct 4 ms 6748 KB Output is correct
35 Correct 5 ms 6744 KB Output is correct
36 Correct 5 ms 6748 KB Output is correct
37 Correct 5 ms 6748 KB Output is correct
38 Correct 5 ms 6748 KB Output is correct
39 Correct 5 ms 6744 KB Output is correct
40 Correct 5 ms 6748 KB Output is correct
41 Correct 4 ms 6748 KB Output is correct
42 Correct 4 ms 6648 KB Output is correct
43 Correct 4 ms 6748 KB Output is correct
44 Correct 3 ms 6748 KB Output is correct
45 Correct 3 ms 6748 KB Output is correct
46 Correct 4 ms 6748 KB Output is correct
47 Correct 4 ms 6652 KB Output is correct
48 Correct 3 ms 6748 KB Output is correct
49 Correct 3 ms 6744 KB Output is correct
50 Correct 5 ms 6744 KB Output is correct
51 Correct 3 ms 6752 KB Output is correct
52 Correct 3 ms 6748 KB Output is correct
53 Correct 3 ms 6752 KB Output is correct
54 Correct 4 ms 6748 KB Output is correct
55 Correct 4 ms 6748 KB Output is correct
56 Correct 5 ms 7008 KB Output is correct
57 Correct 4 ms 6744 KB Output is correct
58 Correct 5 ms 6912 KB Output is correct
59 Correct 5 ms 6988 KB Output is correct
60 Correct 4 ms 6996 KB Output is correct
61 Correct 4 ms 6748 KB Output is correct
62 Correct 4 ms 6748 KB Output is correct
63 Correct 4 ms 6748 KB Output is correct
64 Correct 4 ms 6748 KB Output is correct

Subtask #4
61.0 / 61.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 4444 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 144 ms 28440 KB Output is correct
5 Correct 145 ms 28364 KB Output is correct
6 Correct 144 ms 28360 KB Output is correct
7 Correct 145 ms 28316 KB Output is correct
8 Correct 147 ms 28360 KB Output is correct
9 Correct 145 ms 28364 KB Output is correct
10 Correct 165 ms 28368 KB Output is correct
11 Correct 155 ms 28360 KB Output is correct
12 Correct 122 ms 26572 KB Output is correct
13 Correct 129 ms 26316 KB Output is correct
14 Correct 120 ms 26528 KB Output is correct
15 Correct 122 ms 26272 KB Output is correct
16 Correct 87 ms 23892 KB Output is correct
17 Correct 84 ms 23892 KB Output is correct
18 Correct 82 ms 23892 KB Output is correct
19 Correct 76 ms 23188 KB Output is correct
20 Correct 75 ms 23384 KB Output is correct
21 Correct 75 ms 23204 KB Output is correct
22 Correct 75 ms 23120 KB Output is correct
23 Correct 76 ms 23192 KB Output is correct
24 Correct 72 ms 23204 KB Output is correct
25 Correct 76 ms 23304 KB Output is correct
26 Correct 76 ms 23120 KB Output is correct
27 Correct 72 ms 23124 KB Output is correct
28 Correct 126 ms 23304 KB Output is correct
29 Correct 125 ms 23204 KB Output is correct
30 Correct 122 ms 23124 KB Output is correct
31 Correct 128 ms 23124 KB Output is correct
32 Correct 119 ms 23128 KB Output is correct
33 Correct 131 ms 23208 KB Output is correct
34 Correct 120 ms 26320 KB Output is correct
35 Correct 119 ms 26316 KB Output is correct
36 Correct 120 ms 26060 KB Output is correct
37 Correct 111 ms 26004 KB Output is correct
38 Correct 112 ms 26012 KB Output is correct
39 Correct 119 ms 26060 KB Output is correct
40 Correct 109 ms 26124 KB Output is correct
41 Correct 114 ms 26012 KB Output is correct
42 Correct 126 ms 23124 KB Output is correct
43 Correct 115 ms 25888 KB Output is correct
44 Correct 112 ms 25804 KB Output is correct
45 Correct 108 ms 25808 KB Output is correct
46 Correct 123 ms 25512 KB Output is correct
47 Correct 1 ms 4696 KB Output is correct
48 Correct 1 ms 4440 KB Output is correct
49 Correct 1 ms 4440 KB Output is correct
50 Correct 1 ms 4444 KB Output is correct
51 Correct 1 ms 4444 KB Output is correct
52 Correct 1 ms 4444 KB Output is correct
53 Correct 1 ms 4540 KB Output is correct
54 Correct 1 ms 4440 KB Output is correct
55 Correct 1 ms 4444 KB Output is correct
56 Correct 1 ms 4444 KB Output is correct
57 Correct 1 ms 4444 KB Output is correct
58 Correct 1 ms 4444 KB Output is correct
59 Correct 1 ms 4444 KB Output is correct
60 Correct 1 ms 4444 KB Output is correct
61 Correct 1 ms 4444 KB Output is correct
62 Correct 1 ms 4444 KB Output is correct
63 Correct 1 ms 4444 KB Output is correct
64 Correct 1 ms 4444 KB Output is correct
65 Correct 1 ms 4440 KB Output is correct
66 Correct 1 ms 4444 KB Output is correct
67 Correct 1 ms 4444 KB Output is correct
68 Correct 1 ms 4444 KB Output is correct
69 Correct 1 ms 4444 KB Output is correct
70 Correct 1 ms 4444 KB Output is correct
71 Correct 1 ms 4444 KB Output is correct
72 Correct 1 ms 4504 KB Output is correct
73 Correct 1 ms 4444 KB Output is correct
74 Correct 3 ms 6748 KB Output is correct
75 Correct 3 ms 6748 KB Output is correct
76 Correct 3 ms 6748 KB Output is correct
77 Correct 3 ms 6748 KB Output is correct
78 Correct 3 ms 6748 KB Output is correct
79 Correct 4 ms 6596 KB Output is correct
80 Correct 4 ms 6748 KB Output is correct
81 Correct 5 ms 6744 KB Output is correct
82 Correct 5 ms 6748 KB Output is correct
83 Correct 5 ms 6748 KB Output is correct
84 Correct 5 ms 6748 KB Output is correct
85 Correct 5 ms 6744 KB Output is correct
86 Correct 5 ms 6748 KB Output is correct
87 Correct 4 ms 6748 KB Output is correct
88 Correct 4 ms 6648 KB Output is correct
89 Correct 4 ms 6748 KB Output is correct
90 Correct 3 ms 6748 KB Output is correct
91 Correct 3 ms 6748 KB Output is correct
92 Correct 4 ms 6748 KB Output is correct
93 Correct 4 ms 6652 KB Output is correct
94 Correct 3 ms 6748 KB Output is correct
95 Correct 3 ms 6744 KB Output is correct
96 Correct 5 ms 6744 KB Output is correct
97 Correct 3 ms 6752 KB Output is correct
98 Correct 3 ms 6748 KB Output is correct
99 Correct 3 ms 6752 KB Output is correct
100 Correct 4 ms 6748 KB Output is correct
101 Correct 4 ms 6748 KB Output is correct
102 Correct 5 ms 7008 KB Output is correct
103 Correct 4 ms 6744 KB Output is correct
104 Correct 5 ms 6912 KB Output is correct
105 Correct 5 ms 6988 KB Output is correct
106 Correct 4 ms 6996 KB Output is correct
107 Correct 4 ms 6748 KB Output is correct
108 Correct 4 ms 6748 KB Output is correct
109 Correct 4 ms 6748 KB Output is correct
110 Correct 4 ms 6748 KB Output is correct
111 Correct 79 ms 23124 KB Output is correct
112 Correct 77 ms 23120 KB Output is correct
113 Correct 78 ms 23124 KB Output is correct
114 Correct 82 ms 23124 KB Output is correct
115 Correct 78 ms 23304 KB Output is correct
116 Correct 132 ms 23196 KB Output is correct
117 Correct 139 ms 23120 KB Output is correct
118 Correct 187 ms 28364 KB Output is correct
119 Correct 189 ms 28360 KB Output is correct
120 Correct 149 ms 26140 KB Output is correct
121 Correct 178 ms 23120 KB Output is correct
122 Correct 160 ms 26576 KB Output is correct
123 Correct 149 ms 26320 KB Output is correct
124 Correct 151 ms 26316 KB Output is correct
125 Correct 171 ms 23120 KB Output is correct
126 Correct 111 ms 23892 KB Output is correct
127 Correct 104 ms 23892 KB Output is correct
128 Correct 99 ms 23720 KB Output is correct
129 Correct 161 ms 23180 KB Output is correct
130 Correct 101 ms 23380 KB Output is correct
131 Correct 87 ms 23208 KB Output is correct
132 Correct 83 ms 23456 KB Output is correct
133 Correct 152 ms 23228 KB Output is correct
134 Correct 95 ms 23124 KB Output is correct
135 Correct 85 ms 23292 KB Output is correct
136 Correct 80 ms 23120 KB Output is correct
137 Correct 138 ms 23204 KB Output is correct
138 Correct 80 ms 23124 KB Output is correct
139 Correct 75 ms 23124 KB Output is correct
140 Correct 77 ms 23072 KB Output is correct
141 Correct 134 ms 23332 KB Output is correct
142 Correct 158 ms 28872 KB Output is correct
143 Correct 159 ms 28784 KB Output is correct
144 Correct 153 ms 28876 KB Output is correct
145 Correct 145 ms 28876 KB Output is correct
146 Correct 143 ms 28868 KB Output is correct
147 Correct 155 ms 28872 KB Output is correct
148 Correct 138 ms 28872 KB Output is correct
149 Correct 149 ms 28816 KB Output is correct
150 Correct 142 ms 28876 KB Output is correct
151 Correct 145 ms 28824 KB Output is correct
152 Correct 125 ms 23124 KB Output is correct
153 Correct 144 ms 28872 KB Output is correct
154 Correct 142 ms 28960 KB Output is correct
155 Correct 147 ms 28948 KB Output is correct
156 Correct 154 ms 28872 KB Output is correct
157 Correct 148 ms 28876 KB Output is correct
158 Correct 140 ms 28696 KB Output is correct
159 Correct 139 ms 28824 KB Output is correct
160 Correct 126 ms 23120 KB Output is correct
161 Correct 140 ms 26064 KB Output is correct
162 Correct 142 ms 26056 KB Output is correct
163 Correct 148 ms 26064 KB Output is correct
164 Correct 146 ms 25892 KB Output is correct
165 Correct 142 ms 26064 KB Output is correct
166 Correct 131 ms 23068 KB Output is correct
167 Correct 115 ms 26016 KB Output is correct
168 Correct 115 ms 25804 KB Output is correct
169 Correct 127 ms 25804 KB Output is correct
170 Correct 119 ms 25552 KB Output is correct
171 Correct 101 ms 25252 KB Output is correct
172 Correct 117 ms 26148 KB Output is correct
173 Correct 157 ms 26060 KB Output is correct
174 Correct 166 ms 25948 KB Output is correct
175 Correct 148 ms 25988 KB Output is correct
176 Correct 140 ms 25552 KB Output is correct