oj.uz

Submission #386808

# Submission time Handle Problem Language Result Execution time Memory
386808 2021-04-07T10:55:59 Z BartolM Event Hopping 2 (JOI21_event2) C++17
100 / 100
 236 ms 17760 KB 
#define DEBUG 0
#include <bits/stdc++.h>

using namespace std;

#define X first
#define Y second
#define mp make_pair
#define pb push_back
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <int, pii> pip;
typedef pair <pii, int> ppi;
typedef pair <ll, ll> pll;

const int INF=0x3f3f3f3f;
const int N=1e5+5;
const int LOG=18;

int n, m, k;
ppi p[N];
pii poc[N];
vector <pii> v;
int nx[LOG][N];
vector <int> res;
set <pii> S;
vector <int> sol;

void build() {
    for (int i=1; i<LOG; ++i) {
        for (int j=0; j<=m; ++j) {
            nx[i][j]=nx[i-1][nx[i-1][j]];
        }
    }
}

int calc(pii pp, int gr) {
    if (pp.Y>gr) return -INF;
    int x=lower_bound(v.begin(), v.end(), mp(pp.Y, -1))-v.begin();
    if (v[x].Y>gr) return 1;
    int ret=2;
    for (int i=LOG-1; i>=0; --i) {
        if (v[nx[i][x]].Y<=gr) {
            ret+=(1<<i);
            x=nx[i][x];
        }
    }
    return ret;
}

int cmp(ppi a, ppi b) {
    if (a.X.X==b.X.X) return a.X.Y>b.X.Y;
    return a.X.X<b.X.X;
}

void solve() {
    sort(p, p+n, cmp);
    int rig=INF;
    for (int i=n-1; i>=0; --i) {
        if (p[i].X.Y<rig) {
            rig=p[i].X.Y;
            v.pb(p[i].X);
        }
    }
    reverse(v.begin(), v.end());

    #if DEBUG
        printf("----------------\n");
        for (pii pp:v) printf("%d %d\n", pp.X, pp.Y);
    #endif // DEBUG

    m=v.size();
    v.pb(mp(INF, INF+1));
    nx[0][m]=m;
    for (int i=0; i<m; ++i) nx[0][i]=lower_bound(v.begin(), v.end(), mp(v[i].Y, -1))-v.begin();
    build();

    S.insert(mp(-2, -1));
    S.insert(mp(INF, INF+1));

    int uk=calc(mp(-2, -1), INF);
    if (uk<=k) {
        printf("-1\n");
        return;
    }

    for (int i=0; i<n; ++i) {
        if ((int)sol.size()>=k) break;
        pii pp=poc[i];
        if (S.count(pp)) continue;
        auto it=S.insert(pp).X;
        auto pr=it, slj=it;
        pr--; slj++;

        int prije=calc((*pr), slj->X);
        int sad=calc((*pr), it->X)+calc(pp, slj->X);
#if DEBUG
        printf("pp: (%d, %d), prije: %d, sad: %d\n", pp.X, pp.Y, prije, sad);
#endif
        if (uk-prije+sad<=k) S.erase(it);
        else {
            sol.pb(i+1);
            uk+=sad-prije;
        }
    }
    for (int x:sol) printf("%d\n", x);
}

void load() {
    scanf("%d %d", &n, &k);
    for (int i=0; i<n; ++i) {
        scanf("%d %d", &p[i].X.X, &p[i].X.Y);
        p[i].Y=i;
        poc[i]=p[i].X;
    }
}

int main() {
    load();
    solve();
	return 0;
}

/*
5
6 11
2 4
1 5
4 10
4 6
*/

Compilation message

event2.cpp: In function 'void load()':
event2.cpp:110:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  110 |     scanf("%d %d", &n, &k);
      |     ~~~~~^~~~~~~~~~~~~~~~~
event2.cpp:112:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  112 |         scanf("%d %d", &p[i].X.X, &p[i].X.Y);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 122 ms 15456 KB Output is correct
5 Correct 135 ms 15072 KB Output is correct
6 Correct 119 ms 14816 KB Output is correct
7 Correct 106 ms 14304 KB Output is correct
8 Correct 121 ms 15456 KB Output is correct
9 Correct 118 ms 15072 KB Output is correct
10 Correct 113 ms 14816 KB Output is correct
11 Correct 105 ms 14304 KB Output is correct
12 Correct 108 ms 12896 KB Output is correct
13 Correct 105 ms 12640 KB Output is correct
14 Correct 102 ms 12512 KB Output is correct
15 Correct 97 ms 12128 KB Output is correct
16 Correct 86 ms 7444 KB Output is correct
17 Correct 85 ms 7276 KB Output is correct
18 Correct 81 ms 7140 KB Output is correct
19 Correct 72 ms 3816 KB Output is correct
20 Correct 70 ms 3816 KB Output is correct
21 Correct 70 ms 5736 KB Output is correct
22 Correct 60 ms 4796 KB Output is correct
23 Correct 69 ms 4844 KB Output is correct
24 Correct 64 ms 4844 KB Output is correct
25 Correct 61 ms 4460 KB Output is correct
26 Correct 73 ms 4460 KB Output is correct
27 Correct 74 ms 4460 KB Output is correct
28 Correct 49 ms 12128 KB Output is correct
29 Correct 47 ms 11616 KB Output is correct
30 Correct 53 ms 8700 KB Output is correct
31 Correct 39 ms 5736 KB Output is correct
32 Correct 38 ms 4844 KB Output is correct
33 Correct 38 ms 4460 KB Output is correct
34 Correct 84 ms 13536 KB Output is correct
35 Correct 72 ms 12768 KB Output is correct
36 Correct 60 ms 12108 KB Output is correct
37 Correct 101 ms 10980 KB Output is correct
38 Correct 102 ms 10980 KB Output is correct
39 Correct 105 ms 10852 KB Output is correct
40 Correct 96 ms 10724 KB Output is correct
41 Correct 96 ms 10596 KB Output is correct
42 Correct 43 ms 8332 KB Output is correct
43 Correct 104 ms 10940 KB Output is correct
44 Correct 105 ms 10852 KB Output is correct
45 Correct 146 ms 10724 KB Output is correct
46 Correct 97 ms 10596 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 492 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 2 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 2 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 492 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 2 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 2 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 3 ms 492 KB Output is correct
29 Correct 4 ms 492 KB Output is correct
30 Correct 3 ms 492 KB Output is correct
31 Correct 3 ms 492 KB Output is correct
32 Correct 3 ms 492 KB Output is correct
33 Correct 2 ms 492 KB Output is correct
34 Correct 2 ms 492 KB Output is correct
35 Correct 5 ms 876 KB Output is correct
36 Correct 5 ms 876 KB Output is correct
37 Correct 5 ms 876 KB Output is correct
38 Correct 3 ms 748 KB Output is correct
39 Correct 5 ms 876 KB Output is correct
40 Correct 5 ms 876 KB Output is correct
41 Correct 4 ms 876 KB Output is correct
42 Correct 3 ms 748 KB Output is correct
43 Correct 4 ms 748 KB Output is correct
44 Correct 4 ms 748 KB Output is correct
45 Correct 4 ms 748 KB Output is correct
46 Correct 3 ms 748 KB Output is correct
47 Correct 3 ms 640 KB Output is correct
48 Correct 3 ms 620 KB Output is correct
49 Correct 3 ms 620 KB Output is correct
50 Correct 2 ms 620 KB Output is correct
51 Correct 3 ms 620 KB Output is correct
52 Correct 3 ms 492 KB Output is correct
53 Correct 3 ms 492 KB Output is correct
54 Correct 2 ms 492 KB Output is correct
55 Correct 4 ms 876 KB Output is correct
56 Correct 4 ms 876 KB Output is correct
57 Correct 5 ms 876 KB Output is correct
58 Correct 4 ms 876 KB Output is correct
59 Correct 4 ms 876 KB Output is correct
60 Correct 4 ms 876 KB Output is correct
61 Correct 4 ms 876 KB Output is correct
62 Correct 4 ms 876 KB Output is correct
63 Correct 4 ms 876 KB Output is correct
64 Correct 2 ms 748 KB Output is correct

Subtask #4
61.0 / 61.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 122 ms 15456 KB Output is correct
5 Correct 135 ms 15072 KB Output is correct
6 Correct 119 ms 14816 KB Output is correct
7 Correct 106 ms 14304 KB Output is correct
8 Correct 121 ms 15456 KB Output is correct
9 Correct 118 ms 15072 KB Output is correct
10 Correct 113 ms 14816 KB Output is correct
11 Correct 105 ms 14304 KB Output is correct
12 Correct 108 ms 12896 KB Output is correct
13 Correct 105 ms 12640 KB Output is correct
14 Correct 102 ms 12512 KB Output is correct
15 Correct 97 ms 12128 KB Output is correct
16 Correct 86 ms 7444 KB Output is correct
17 Correct 85 ms 7276 KB Output is correct
18 Correct 81 ms 7140 KB Output is correct
19 Correct 72 ms 3816 KB Output is correct
20 Correct 70 ms 3816 KB Output is correct
21 Correct 70 ms 5736 KB Output is correct
22 Correct 60 ms 4796 KB Output is correct
23 Correct 69 ms 4844 KB Output is correct
24 Correct 64 ms 4844 KB Output is correct
25 Correct 61 ms 4460 KB Output is correct
26 Correct 73 ms 4460 KB Output is correct
27 Correct 74 ms 4460 KB Output is correct
28 Correct 49 ms 12128 KB Output is correct
29 Correct 47 ms 11616 KB Output is correct
30 Correct 53 ms 8700 KB Output is correct
31 Correct 39 ms 5736 KB Output is correct
32 Correct 38 ms 4844 KB Output is correct
33 Correct 38 ms 4460 KB Output is correct
34 Correct 84 ms 13536 KB Output is correct
35 Correct 72 ms 12768 KB Output is correct
36 Correct 60 ms 12108 KB Output is correct
37 Correct 101 ms 10980 KB Output is correct
38 Correct 102 ms 10980 KB Output is correct
39 Correct 105 ms 10852 KB Output is correct
40 Correct 96 ms 10724 KB Output is correct
41 Correct 96 ms 10596 KB Output is correct
42 Correct 43 ms 8332 KB Output is correct
43 Correct 104 ms 10940 KB Output is correct
44 Correct 105 ms 10852 KB Output is correct
45 Correct 146 ms 10724 KB Output is correct
46 Correct 97 ms 10596 KB Output is correct
47 Correct 2 ms 492 KB Output is correct
48 Correct 1 ms 364 KB Output is correct
49 Correct 1 ms 364 KB Output is correct
50 Correct 1 ms 364 KB Output is correct
51 Correct 2 ms 364 KB Output is correct
52 Correct 1 ms 364 KB Output is correct
53 Correct 1 ms 364 KB Output is correct
54 Correct 1 ms 364 KB Output is correct
55 Correct 2 ms 364 KB Output is correct
56 Correct 1 ms 364 KB Output is correct
57 Correct 1 ms 364 KB Output is correct
58 Correct 1 ms 364 KB Output is correct
59 Correct 2 ms 364 KB Output is correct
60 Correct 1 ms 364 KB Output is correct
61 Correct 1 ms 364 KB Output is correct
62 Correct 1 ms 364 KB Output is correct
63 Correct 1 ms 364 KB Output is correct
64 Correct 1 ms 364 KB Output is correct
65 Correct 1 ms 364 KB Output is correct
66 Correct 1 ms 364 KB Output is correct
67 Correct 1 ms 364 KB Output is correct
68 Correct 1 ms 364 KB Output is correct
69 Correct 1 ms 364 KB Output is correct
70 Correct 1 ms 364 KB Output is correct
71 Correct 1 ms 364 KB Output is correct
72 Correct 1 ms 364 KB Output is correct
73 Correct 1 ms 364 KB Output is correct
74 Correct 3 ms 492 KB Output is correct
75 Correct 4 ms 492 KB Output is correct
76 Correct 3 ms 492 KB Output is correct
77 Correct 3 ms 492 KB Output is correct
78 Correct 3 ms 492 KB Output is correct
79 Correct 2 ms 492 KB Output is correct
80 Correct 2 ms 492 KB Output is correct
81 Correct 5 ms 876 KB Output is correct
82 Correct 5 ms 876 KB Output is correct
83 Correct 5 ms 876 KB Output is correct
84 Correct 3 ms 748 KB Output is correct
85 Correct 5 ms 876 KB Output is correct
86 Correct 5 ms 876 KB Output is correct
87 Correct 4 ms 876 KB Output is correct
88 Correct 3 ms 748 KB Output is correct
89 Correct 4 ms 748 KB Output is correct
90 Correct 4 ms 748 KB Output is correct
91 Correct 4 ms 748 KB Output is correct
92 Correct 3 ms 748 KB Output is correct
93 Correct 3 ms 640 KB Output is correct
94 Correct 3 ms 620 KB Output is correct
95 Correct 3 ms 620 KB Output is correct
96 Correct 2 ms 620 KB Output is correct
97 Correct 3 ms 620 KB Output is correct
98 Correct 3 ms 492 KB Output is correct
99 Correct 3 ms 492 KB Output is correct
100 Correct 2 ms 492 KB Output is correct
101 Correct 4 ms 876 KB Output is correct
102 Correct 4 ms 876 KB Output is correct
103 Correct 5 ms 876 KB Output is correct
104 Correct 4 ms 876 KB Output is correct
105 Correct 4 ms 876 KB Output is correct
106 Correct 4 ms 876 KB Output is correct
107 Correct 4 ms 876 KB Output is correct
108 Correct 4 ms 876 KB Output is correct
109 Correct 4 ms 876 KB Output is correct
110 Correct 2 ms 748 KB Output is correct
111 Correct 71 ms 4332 KB Output is correct
112 Correct 69 ms 4332 KB Output is correct
113 Correct 70 ms 4460 KB Output is correct
114 Correct 63 ms 4264 KB Output is correct
115 Correct 60 ms 4332 KB Output is correct
116 Correct 45 ms 4332 KB Output is correct
117 Correct 46 ms 4332 KB Output is correct
118 Correct 236 ms 17376 KB Output is correct
119 Correct 214 ms 16796 KB Output is correct
120 Correct 154 ms 14048 KB Output is correct
121 Correct 56 ms 11616 KB Output is correct
122 Correct 182 ms 14816 KB Output is correct
123 Correct 172 ms 14432 KB Output is correct
124 Correct 150 ms 14048 KB Output is correct
125 Correct 69 ms 11644 KB Output is correct
126 Correct 127 ms 9316 KB Output is correct
127 Correct 126 ms 9188 KB Output is correct
128 Correct 120 ms 9188 KB Output is correct
129 Correct 54 ms 8676 KB Output is correct
130 Correct 98 ms 5940 KB Output is correct
131 Correct 98 ms 5736 KB Output is correct
132 Correct 92 ms 5736 KB Output is correct
133 Correct 51 ms 5736 KB Output is correct
134 Correct 76 ms 4852 KB Output is correct
135 Correct 73 ms 4844 KB Output is correct
136 Correct 68 ms 4788 KB Output is correct
137 Correct 46 ms 4836 KB Output is correct
138 Correct 61 ms 4460 KB Output is correct
139 Correct 62 ms 4456 KB Output is correct
140 Correct 48 ms 4484 KB Output is correct
141 Correct 45 ms 4452 KB Output is correct
142 Correct 134 ms 17760 KB Output is correct
143 Correct 128 ms 17760 KB Output is correct
144 Correct 127 ms 17760 KB Output is correct
145 Correct 126 ms 17632 KB Output is correct
146 Correct 123 ms 17576 KB Output is correct
147 Correct 114 ms 17504 KB Output is correct
148 Correct 115 ms 17376 KB Output is correct
149 Correct 121 ms 17248 KB Output is correct
150 Correct 118 ms 17140 KB Output is correct
151 Correct 101 ms 16608 KB Output is correct
152 Correct 49 ms 12160 KB Output is correct
153 Correct 123 ms 17648 KB Output is correct
154 Correct 130 ms 17632 KB Output is correct
155 Correct 114 ms 17476 KB Output is correct
156 Correct 117 ms 17376 KB Output is correct
157 Correct 111 ms 17208 KB Output is correct
158 Correct 109 ms 17120 KB Output is correct
159 Correct 105 ms 16516 KB Output is correct
160 Correct 60 ms 12128 KB Output is correct
161 Correct 191 ms 14816 KB Output is correct
162 Correct 161 ms 14816 KB Output is correct
163 Correct 155 ms 14688 KB Output is correct
164 Correct 151 ms 14560 KB Output is correct
165 Correct 168 ms 14432 KB Output is correct
166 Correct 48 ms 8292 KB Output is correct
167 Correct 109 ms 10936 KB Output is correct
168 Correct 105 ms 10852 KB Output is correct
169 Correct 102 ms 10724 KB Output is correct
170 Correct 110 ms 10596 KB Output is correct
171 Correct 100 ms 14176 KB Output is correct
172 Correct 103 ms 14944 KB Output is correct
173 Correct 194 ms 14852 KB Output is correct
174 Correct 189 ms 14940 KB Output is correct
175 Correct 198 ms 14852 KB Output is correct
176 Correct 172 ms 14280 KB Output is correct