oj.uz

Submission #414719

# Submission time Handle Problem Language Result Execution time Memory
414719 2021-05-31T05:46:17 Z 조영욱(#7631) Event Hopping 2 (JOI21_event2) C++17
100 / 100
 258 ms 25496 KB 
#include <bits/stdc++.h>
using namespace std;

typedef pair<int,int> P;
P arr[100001];
vector<int> press;
int nt[200000];
vector<P> vec[200000];
int nxt[100002];
int table[100002][17];

int ans(int st,int en) { //en�� �������� �ʰ� st�������� ���
    if (arr[st].second>arr[en].first) {
        return 0;
    }
    int ret=1;
    int now=st;
    for(int i=16;i>=0;i--) {
        int nt=table[now][i];
        if (nt!=-1&&arr[nt].second<=arr[en].first) {
            ret+=(1<<i);
            now=nt;
        }
    }
    return ret;
}

int main(void) {
    int n,k;
    scanf("%d %d",&n,&k);
    for(int i=1;i<=n;i++) {
        scanf("%d %d",&arr[i].first,&arr[i].second);
        press.push_back(arr[i].first);
        press.push_back(arr[i].second);
    }
    sort(press.begin(),press.end());
    press.erase(unique(press.begin(),press.end()),press.end());
    for(int i=1;i<=n;i++) {
        arr[i].first=lower_bound(press.begin(),press.end(),arr[i].first)-press.begin();
        arr[i].second=lower_bound(press.begin(),press.end(),arr[i].second)-press.begin();
        vec[arr[i].first].push_back(P(arr[i].second,i));
    }
    priority_queue<P,vector<P>,greater<P>> pq;
    for(int i=press.size()-1;i>=0;i--) {
        for(int j=0;j<vec[i].size();j++) {
            pq.push(vec[i][j]);
        }
        nt[i]=(pq.empty()?-1:pq.top().second);
    }
    for(int i=1;i<=n;i++) {
        nxt[i]=nt[arr[i].second];
        if (nxt[i]==-1) {
            nxt[i]=n+1;
        }
    }
    memset(table,-1,sizeof(table));
    nxt[0]=nt[0];
    nxt[n+1]=-1;
    arr[0].first=-2;
    arr[0].second=-1;
    arr[n+1].first=10*n;
    arr[n+1].second=10*n+1;
    for(int i=0;i<n+2;i++) {
        table[i][0]=nxt[i];
    }
    for(int j=1;j<17;j++) {
        for(int i=0;i<n+2;i++) {
            if (table[i][j-1]!=-1) {
                table[i][j]=table[table[i][j-1]][j-1];
            }
        }
    }
    set<P> s; //P(l,ind)
    s.insert(P(-2,0));
    s.insert(P(10*n,n+1));
    int ret=ans(0,n+1);
    if (ret<k+1) {
        printf("-1");
        return 0;
    }
    vector<int> v;
    for(int i=1;i<=n;i++) {
        auto iter=s.lower_bound(P(arr[i].second,-1));
        auto iter1=prev(iter);
        if  (arr[(*iter1).second].second<=arr[i].first&&arr[i].second<=arr[(*iter).second].first) {

        }
        else {
            continue;
        }
        int save=ret;
        ret-=ans((*iter1).second,(*iter).second);
        ret+=ans((*iter1).second,i);
        ret+=ans(i,(*iter).second);
        if (ret<k+1) {
            ret=save;
        }
        else {
            v.push_back(i);
            s.insert(P(arr[i].first,i));
        }
        if (v.size()==k) {
            break;
        }
    }
    for(int i=0;i<k;i++) {
        printf("%d\n",v[i]);
    }
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:45:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |         for(int j=0;j<vec[i].size();j++) {
      |                     ~^~~~~~~~~~~~~~
event2.cpp:102:21: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  102 |         if (v.size()==k) {
      |             ~~~~~~~~^~~
event2.cpp:30:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |     scanf("%d %d",&n,&k);
      |     ~~~~~^~~~~~~~~~~~~~~
event2.cpp:32:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |         scanf("%d %d",&arr[i].first,&arr[i].second);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11596 KB Output is correct
2 Correct 7 ms 11664 KB Output is correct
3 Correct 6 ms 11628 KB Output is correct
4 Correct 130 ms 25224 KB Output is correct
5 Correct 128 ms 24904 KB Output is correct
6 Correct 118 ms 24636 KB Output is correct
7 Correct 134 ms 24132 KB Output is correct
8 Correct 124 ms 25144 KB Output is correct
9 Correct 121 ms 24888 KB Output is correct
10 Correct 134 ms 24632 KB Output is correct
11 Correct 114 ms 24128 KB Output is correct
12 Correct 109 ms 23088 KB Output is correct
13 Correct 115 ms 23076 KB Output is correct
14 Correct 104 ms 22840 KB Output is correct
15 Correct 101 ms 22412 KB Output is correct
16 Correct 85 ms 20600 KB Output is correct
17 Correct 88 ms 20640 KB Output is correct
18 Correct 103 ms 20400 KB Output is correct
19 Correct 102 ms 19972 KB Output is correct
20 Correct 87 ms 19940 KB Output is correct
21 Correct 110 ms 20080 KB Output is correct
22 Correct 88 ms 20028 KB Output is correct
23 Correct 110 ms 19940 KB Output is correct
24 Correct 105 ms 19972 KB Output is correct
25 Correct 84 ms 19940 KB Output is correct
26 Correct 93 ms 19996 KB Output is correct
27 Correct 106 ms 20040 KB Output is correct
28 Correct 71 ms 20040 KB Output is correct
29 Correct 78 ms 19956 KB Output is correct
30 Correct 79 ms 20040 KB Output is correct
31 Correct 83 ms 19960 KB Output is correct
32 Correct 89 ms 19952 KB Output is correct
33 Correct 85 ms 19988 KB Output is correct
34 Correct 102 ms 21824 KB Output is correct
35 Correct 90 ms 21184 KB Output is correct
36 Correct 85 ms 20480 KB Output is correct
37 Correct 111 ms 22764 KB Output is correct
38 Correct 105 ms 22620 KB Output is correct
39 Correct 103 ms 22500 KB Output is correct
40 Correct 103 ms 22356 KB Output is correct
41 Correct 98 ms 22244 KB Output is correct
42 Correct 83 ms 20020 KB Output is correct
43 Correct 129 ms 22516 KB Output is correct
44 Correct 132 ms 22560 KB Output is correct
45 Correct 117 ms 22368 KB Output is correct
46 Correct 136 ms 22268 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 11596 KB Output is correct
2 Correct 7 ms 11596 KB Output is correct
3 Correct 8 ms 11668 KB Output is correct
4 Correct 8 ms 11668 KB Output is correct
5 Correct 7 ms 11596 KB Output is correct
6 Correct 7 ms 11668 KB Output is correct
7 Correct 8 ms 11668 KB Output is correct
8 Correct 8 ms 11596 KB Output is correct
9 Correct 8 ms 11660 KB Output is correct
10 Correct 9 ms 11668 KB Output is correct
11 Correct 8 ms 11596 KB Output is correct
12 Correct 8 ms 11668 KB Output is correct
13 Correct 9 ms 11596 KB Output is correct
14 Correct 7 ms 11596 KB Output is correct
15 Correct 8 ms 11596 KB Output is correct
16 Correct 8 ms 11596 KB Output is correct
17 Correct 9 ms 11596 KB Output is correct
18 Correct 8 ms 11596 KB Output is correct
19 Correct 8 ms 11672 KB Output is correct
20 Correct 8 ms 11668 KB Output is correct
21 Correct 8 ms 11668 KB Output is correct
22 Correct 8 ms 11668 KB Output is correct
23 Correct 9 ms 11596 KB Output is correct
24 Correct 8 ms 11596 KB Output is correct
25 Correct 9 ms 11664 KB Output is correct
26 Correct 7 ms 11672 KB Output is correct
27 Correct 7 ms 11672 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 11596 KB Output is correct
2 Correct 7 ms 11596 KB Output is correct
3 Correct 8 ms 11668 KB Output is correct
4 Correct 8 ms 11668 KB Output is correct
5 Correct 7 ms 11596 KB Output is correct
6 Correct 7 ms 11668 KB Output is correct
7 Correct 8 ms 11668 KB Output is correct
8 Correct 8 ms 11596 KB Output is correct
9 Correct 8 ms 11660 KB Output is correct
10 Correct 9 ms 11668 KB Output is correct
11 Correct 8 ms 11596 KB Output is correct
12 Correct 8 ms 11668 KB Output is correct
13 Correct 9 ms 11596 KB Output is correct
14 Correct 7 ms 11596 KB Output is correct
15 Correct 8 ms 11596 KB Output is correct
16 Correct 8 ms 11596 KB Output is correct
17 Correct 9 ms 11596 KB Output is correct
18 Correct 8 ms 11596 KB Output is correct
19 Correct 8 ms 11672 KB Output is correct
20 Correct 8 ms 11668 KB Output is correct
21 Correct 8 ms 11668 KB Output is correct
22 Correct 8 ms 11668 KB Output is correct
23 Correct 9 ms 11596 KB Output is correct
24 Correct 8 ms 11596 KB Output is correct
25 Correct 9 ms 11664 KB Output is correct
26 Correct 7 ms 11672 KB Output is correct
27 Correct 7 ms 11672 KB Output is correct
28 Correct 10 ms 11936 KB Output is correct
29 Correct 10 ms 11936 KB Output is correct
30 Correct 12 ms 11844 KB Output is correct
31 Correct 12 ms 11868 KB Output is correct
32 Correct 11 ms 11852 KB Output is correct
33 Correct 11 ms 11872 KB Output is correct
34 Correct 10 ms 11876 KB Output is correct
35 Correct 12 ms 12064 KB Output is correct
36 Correct 12 ms 11980 KB Output is correct
37 Correct 13 ms 11980 KB Output is correct
38 Correct 12 ms 11852 KB Output is correct
39 Correct 13 ms 12004 KB Output is correct
40 Correct 11 ms 12052 KB Output is correct
41 Correct 11 ms 11980 KB Output is correct
42 Correct 9 ms 11852 KB Output is correct
43 Correct 13 ms 11892 KB Output is correct
44 Correct 11 ms 11852 KB Output is correct
45 Correct 11 ms 11852 KB Output is correct
46 Correct 10 ms 11872 KB Output is correct
47 Correct 10 ms 11852 KB Output is correct
48 Correct 11 ms 11928 KB Output is correct
49 Correct 10 ms 11932 KB Output is correct
50 Correct 10 ms 11852 KB Output is correct
51 Correct 10 ms 11836 KB Output is correct
52 Correct 10 ms 11936 KB Output is correct
53 Correct 13 ms 11852 KB Output is correct
54 Correct 15 ms 11852 KB Output is correct
55 Correct 10 ms 12000 KB Output is correct
56 Correct 11 ms 12000 KB Output is correct
57 Correct 10 ms 12064 KB Output is correct
58 Correct 10 ms 11980 KB Output is correct
59 Correct 11 ms 12032 KB Output is correct
60 Correct 11 ms 11980 KB Output is correct
61 Correct 14 ms 12004 KB Output is correct
62 Correct 11 ms 11980 KB Output is correct
63 Correct 10 ms 11980 KB Output is correct
64 Correct 9 ms 11852 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 11596 KB Output is correct
2 Correct 7 ms 11664 KB Output is correct
3 Correct 6 ms 11628 KB Output is correct
4 Correct 130 ms 25224 KB Output is correct
5 Correct 128 ms 24904 KB Output is correct
6 Correct 118 ms 24636 KB Output is correct
7 Correct 134 ms 24132 KB Output is correct
8 Correct 124 ms 25144 KB Output is correct
9 Correct 121 ms 24888 KB Output is correct
10 Correct 134 ms 24632 KB Output is correct
11 Correct 114 ms 24128 KB Output is correct
12 Correct 109 ms 23088 KB Output is correct
13 Correct 115 ms 23076 KB Output is correct
14 Correct 104 ms 22840 KB Output is correct
15 Correct 101 ms 22412 KB Output is correct
16 Correct 85 ms 20600 KB Output is correct
17 Correct 88 ms 20640 KB Output is correct
18 Correct 103 ms 20400 KB Output is correct
19 Correct 102 ms 19972 KB Output is correct
20 Correct 87 ms 19940 KB Output is correct
21 Correct 110 ms 20080 KB Output is correct
22 Correct 88 ms 20028 KB Output is correct
23 Correct 110 ms 19940 KB Output is correct
24 Correct 105 ms 19972 KB Output is correct
25 Correct 84 ms 19940 KB Output is correct
26 Correct 93 ms 19996 KB Output is correct
27 Correct 106 ms 20040 KB Output is correct
28 Correct 71 ms 20040 KB Output is correct
29 Correct 78 ms 19956 KB Output is correct
30 Correct 79 ms 20040 KB Output is correct
31 Correct 83 ms 19960 KB Output is correct
32 Correct 89 ms 19952 KB Output is correct
33 Correct 85 ms 19988 KB Output is correct
34 Correct 102 ms 21824 KB Output is correct
35 Correct 90 ms 21184 KB Output is correct
36 Correct 85 ms 20480 KB Output is correct
37 Correct 111 ms 22764 KB Output is correct
38 Correct 105 ms 22620 KB Output is correct
39 Correct 103 ms 22500 KB Output is correct
40 Correct 103 ms 22356 KB Output is correct
41 Correct 98 ms 22244 KB Output is correct
42 Correct 83 ms 20020 KB Output is correct
43 Correct 129 ms 22516 KB Output is correct
44 Correct 132 ms 22560 KB Output is correct
45 Correct 117 ms 22368 KB Output is correct
46 Correct 136 ms 22268 KB Output is correct
47 Correct 8 ms 11596 KB Output is correct
48 Correct 7 ms 11596 KB Output is correct
49 Correct 8 ms 11668 KB Output is correct
50 Correct 8 ms 11668 KB Output is correct
51 Correct 7 ms 11596 KB Output is correct
52 Correct 7 ms 11668 KB Output is correct
53 Correct 8 ms 11668 KB Output is correct
54 Correct 8 ms 11596 KB Output is correct
55 Correct 8 ms 11660 KB Output is correct
56 Correct 9 ms 11668 KB Output is correct
57 Correct 8 ms 11596 KB Output is correct
58 Correct 8 ms 11668 KB Output is correct
59 Correct 9 ms 11596 KB Output is correct
60 Correct 7 ms 11596 KB Output is correct
61 Correct 8 ms 11596 KB Output is correct
62 Correct 8 ms 11596 KB Output is correct
63 Correct 9 ms 11596 KB Output is correct
64 Correct 8 ms 11596 KB Output is correct
65 Correct 8 ms 11672 KB Output is correct
66 Correct 8 ms 11668 KB Output is correct
67 Correct 8 ms 11668 KB Output is correct
68 Correct 8 ms 11668 KB Output is correct
69 Correct 9 ms 11596 KB Output is correct
70 Correct 8 ms 11596 KB Output is correct
71 Correct 9 ms 11664 KB Output is correct
72 Correct 7 ms 11672 KB Output is correct
73 Correct 7 ms 11672 KB Output is correct
74 Correct 10 ms 11936 KB Output is correct
75 Correct 10 ms 11936 KB Output is correct
76 Correct 12 ms 11844 KB Output is correct
77 Correct 12 ms 11868 KB Output is correct
78 Correct 11 ms 11852 KB Output is correct
79 Correct 11 ms 11872 KB Output is correct
80 Correct 10 ms 11876 KB Output is correct
81 Correct 12 ms 12064 KB Output is correct
82 Correct 12 ms 11980 KB Output is correct
83 Correct 13 ms 11980 KB Output is correct
84 Correct 12 ms 11852 KB Output is correct
85 Correct 13 ms 12004 KB Output is correct
86 Correct 11 ms 12052 KB Output is correct
87 Correct 11 ms 11980 KB Output is correct
88 Correct 9 ms 11852 KB Output is correct
89 Correct 13 ms 11892 KB Output is correct
90 Correct 11 ms 11852 KB Output is correct
91 Correct 11 ms 11852 KB Output is correct
92 Correct 10 ms 11872 KB Output is correct
93 Correct 10 ms 11852 KB Output is correct
94 Correct 11 ms 11928 KB Output is correct
95 Correct 10 ms 11932 KB Output is correct
96 Correct 10 ms 11852 KB Output is correct
97 Correct 10 ms 11836 KB Output is correct
98 Correct 10 ms 11936 KB Output is correct
99 Correct 13 ms 11852 KB Output is correct
100 Correct 15 ms 11852 KB Output is correct
101 Correct 10 ms 12000 KB Output is correct
102 Correct 11 ms 12000 KB Output is correct
103 Correct 10 ms 12064 KB Output is correct
104 Correct 10 ms 11980 KB Output is correct
105 Correct 11 ms 12032 KB Output is correct
106 Correct 11 ms 11980 KB Output is correct
107 Correct 14 ms 12004 KB Output is correct
108 Correct 11 ms 11980 KB Output is correct
109 Correct 10 ms 11980 KB Output is correct
110 Correct 9 ms 11852 KB Output is correct
111 Correct 124 ms 20048 KB Output is correct
112 Correct 130 ms 20032 KB Output is correct
113 Correct 126 ms 20016 KB Output is correct
114 Correct 124 ms 19964 KB Output is correct
115 Correct 117 ms 19940 KB Output is correct
116 Correct 117 ms 19944 KB Output is correct
117 Correct 149 ms 20032 KB Output is correct
118 Correct 237 ms 25208 KB Output is correct
119 Correct 258 ms 24604 KB Output is correct
120 Correct 188 ms 22448 KB Output is correct
121 Correct 136 ms 20052 KB Output is correct
122 Correct 221 ms 23312 KB Output is correct
123 Correct 215 ms 22988 KB Output is correct
124 Correct 180 ms 22532 KB Output is correct
125 Correct 138 ms 20252 KB Output is correct
126 Correct 166 ms 20812 KB Output is correct
127 Correct 177 ms 20864 KB Output is correct
128 Correct 172 ms 20808 KB Output is correct
129 Correct 128 ms 20340 KB Output is correct
130 Correct 145 ms 20272 KB Output is correct
131 Correct 148 ms 20324 KB Output is correct
132 Correct 147 ms 20476 KB Output is correct
133 Correct 132 ms 20356 KB Output is correct
134 Correct 134 ms 20296 KB Output is correct
135 Correct 132 ms 20328 KB Output is correct
136 Correct 152 ms 20264 KB Output is correct
137 Correct 128 ms 20280 KB Output is correct
138 Correct 122 ms 20268 KB Output is correct
139 Correct 127 ms 20252 KB Output is correct
140 Correct 123 ms 20344 KB Output is correct
141 Correct 122 ms 20272 KB Output is correct
142 Correct 145 ms 25496 KB Output is correct
143 Correct 132 ms 25436 KB Output is correct
144 Correct 133 ms 25484 KB Output is correct
145 Correct 118 ms 25448 KB Output is correct
146 Correct 132 ms 25268 KB Output is correct
147 Correct 121 ms 25240 KB Output is correct
148 Correct 116 ms 25092 KB Output is correct
149 Correct 135 ms 24988 KB Output is correct
150 Correct 115 ms 24892 KB Output is correct
151 Correct 116 ms 24292 KB Output is correct
152 Correct 70 ms 19956 KB Output is correct
153 Correct 122 ms 25396 KB Output is correct
154 Correct 127 ms 25276 KB Output is correct
155 Correct 117 ms 25228 KB Output is correct
156 Correct 121 ms 25144 KB Output is correct
157 Correct 136 ms 24972 KB Output is correct
158 Correct 126 ms 24824 KB Output is correct
159 Correct 120 ms 24336 KB Output is correct
160 Correct 68 ms 19864 KB Output is correct
161 Correct 193 ms 22764 KB Output is correct
162 Correct 182 ms 22700 KB Output is correct
163 Correct 175 ms 22596 KB Output is correct
164 Correct 168 ms 22508 KB Output is correct
165 Correct 175 ms 22472 KB Output is correct
166 Correct 74 ms 20232 KB Output is correct
167 Correct 115 ms 22908 KB Output is correct
168 Correct 118 ms 22780 KB Output is correct
169 Correct 118 ms 22652 KB Output is correct
170 Correct 102 ms 22500 KB Output is correct
171 Correct 131 ms 22332 KB Output is correct
172 Correct 137 ms 23040 KB Output is correct
173 Correct 192 ms 22736 KB Output is correct
174 Correct 209 ms 22656 KB Output is correct
175 Correct 192 ms 22528 KB Output is correct
176 Correct 165 ms 22004 KB Output is correct