oj.uz

Submission #442969

# Submission time Handle Problem Language Result Execution time Memory
442969 2021-07-09T12:06:04 Z ics0503 Event Hopping 2 (JOI21_event2) C++17
100 / 100
 271 ms 24288 KB 
#include<stdio.h>
#include<algorithm>
#include<set>
using namespace std;
struct xy {
	int x, y;
}a[121212];
int all[212121], alln = 0;
int ST[212121][20];
int get_cnt(int l, int r) {
	int now = l, i, cnt = 0;
	for (i = 19; i >= 0; i--) {
		if (ST[now][i] <= r) {
			cnt += (1 << i);
			now = ST[now][i];
		}
	}
	return cnt;
}
set<pair<int, int>>S;
int main() {
	int n, k; scanf("%d%d", &n, &k);
	int i, j;
	for (i = 0; i < n; i++) {
		scanf("%d%d", &a[i].x, &a[i].y);
		all[alln++] = a[i].x;
		all[alln++] = a[i].y;
	}
	sort(all, all + alln);
	alln = unique(all, all + alln) - all;
	for (i = 0; i < n; i++) a[i] = { lower_bound(all,all + alln,a[i].x) - all,lower_bound(all,all + alln,a[i].y) - all };
	for (i = 0; i <= alln; i++) {
		for (j = 0; j < 20; j++) {
			ST[i][j] = 1e9;
		}
	}
	for (i = 0; i < n; i++) {
		ST[a[i].x][0] = min(ST[a[i].x][0], a[i].y);
	}
	for (i = alln - 2; i >= 0; i--) ST[i][0] = min(ST[i + 1][0], ST[i][0]);
	for (j = 1; j < 20; j++) {
		for (i = 0; i < alln; i++) {
			if (ST[i][j - 1] > alln)continue;
			ST[i][j] = ST[ST[i][j - 1]][j - 1];
		}
		for (i = alln - 2; i >= 0; i--) ST[i][j] = min(ST[i + 1][j], ST[i][j]);
	}
	int X = get_cnt(0, alln - 1);
	if (X < k) {
		puts("-1");
		return 0;
	}
	S.insert({ -0,alln - 1 });
	int acnt = 0;
	for (i = 0; i < n; i++) {
		auto it = S.lower_bound({ -a[i].x,a[i].y });
		auto l = -(it->first), r = it->second;
		if (r < a[i].y)continue;
		int ls = l, le = a[i].x;
		int rs = a[i].y, re = r;
		int x = get_cnt(l, r);
		int y = get_cnt(ls, le);
		int z = get_cnt(rs, re);
		if (X - x + y + z + 1 >= k) {
			S.erase(it);
			S.insert({ -ls, le });
			S.insert({ -rs,re });
			X = X - x + y + z + 1;
			printf("%d\n", i + 1);
			acnt++;
			if (acnt == k)break;
		}
	}
	return 0;
}

Compilation message

event2.cpp: In function 'int main()':
event2.cpp:31:70: warning: narrowing conversion of '((std::lower_bound<int*, int>(((int*)(& all)), (((int*)(& all)) + ((sizetype)(((long unsigned int)alln) * 4))), a[i].xy::x) - ((int*)(& all))) <unknown operator> 4)' from 'long int' to 'int' [-Wnarrowing]
   31 |  for (i = 0; i < n; i++) a[i] = { lower_bound(all,all + alln,a[i].x) - all,lower_bound(all,all + alln,a[i].y) - all };
      |                                   ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
event2.cpp:31:111: warning: narrowing conversion of '((std::lower_bound<int*, int>(((int*)(& all)), (((int*)(& all)) + ((sizetype)(((long unsigned int)alln) * 4))), a[i].xy::y) - ((int*)(& all))) <unknown operator> 4)' from 'long int' to 'int' [-Wnarrowing]
   31 |  for (i = 0; i < n; i++) a[i] = { lower_bound(all,all + alln,a[i].x) - all,lower_bound(all,all + alln,a[i].y) - all };
      |                                                                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^~~~~
event2.cpp:22:17: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   22 |  int n, k; scanf("%d%d", &n, &k);
      |            ~~~~~^~~~~~~~~~~~~~~~
event2.cpp:25:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   25 |   scanf("%d%d", &a[i].x, &a[i].y);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

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 256 KB Output is correct
4 Correct 195 ms 24232 KB Output is correct
5 Correct 186 ms 24024 KB Output is correct
6 Correct 208 ms 23800 KB Output is correct
7 Correct 201 ms 23236 KB Output is correct
8 Correct 186 ms 24288 KB Output is correct
9 Correct 230 ms 24080 KB Output is correct
10 Correct 182 ms 23748 KB Output is correct
11 Correct 166 ms 23268 KB Output is correct
12 Correct 164 ms 22344 KB Output is correct
13 Correct 199 ms 22308 KB Output is correct
14 Correct 166 ms 22084 KB Output is correct
15 Correct 155 ms 21840 KB Output is correct
16 Correct 136 ms 20080 KB Output is correct
17 Correct 129 ms 20028 KB Output is correct
18 Correct 136 ms 19884 KB Output is correct
19 Correct 112 ms 19396 KB Output is correct
20 Correct 114 ms 19512 KB Output is correct
21 Correct 174 ms 19380 KB Output is correct
22 Correct 117 ms 19436 KB Output is correct
23 Correct 112 ms 19344 KB Output is correct
24 Correct 115 ms 19388 KB Output is correct
25 Correct 173 ms 19396 KB Output is correct
26 Correct 147 ms 19396 KB Output is correct
27 Correct 113 ms 19328 KB Output is correct
28 Correct 107 ms 19396 KB Output is correct
29 Correct 116 ms 19388 KB Output is correct
30 Correct 110 ms 19336 KB Output is correct
31 Correct 109 ms 19396 KB Output is correct
32 Correct 131 ms 19396 KB Output is correct
33 Correct 116 ms 19452 KB Output is correct
34 Correct 143 ms 21212 KB Output is correct
35 Correct 130 ms 20604 KB Output is correct
36 Correct 117 ms 19908 KB Output is correct
37 Correct 153 ms 21948 KB Output is correct
38 Correct 151 ms 21984 KB Output is correct
39 Correct 202 ms 21828 KB Output is correct
40 Correct 147 ms 21728 KB Output is correct
41 Correct 144 ms 21572 KB Output is correct
42 Correct 118 ms 19328 KB Output is correct
43 Correct 166 ms 21832 KB Output is correct
44 Correct 191 ms 21768 KB Output is correct
45 Correct 192 ms 21668 KB Output is correct
46 Correct 159 ms 21572 KB Output is correct

Subtask #2
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 288 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 0 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 284 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 0 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 0 ms 204 KB Output is correct
7 Correct 0 ms 204 KB Output is correct
8 Correct 0 ms 288 KB Output is correct
9 Correct 0 ms 204 KB Output is correct
10 Correct 0 ms 204 KB Output is correct
11 Correct 0 ms 204 KB Output is correct
12 Correct 0 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 0 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 0 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 0 ms 204 KB Output is correct
21 Correct 0 ms 204 KB Output is correct
22 Correct 0 ms 204 KB Output is correct
23 Correct 0 ms 204 KB Output is correct
24 Correct 0 ms 204 KB Output is correct
25 Correct 0 ms 204 KB Output is correct
26 Correct 1 ms 204 KB Output is correct
27 Correct 1 ms 284 KB Output is correct
28 Correct 3 ms 844 KB Output is correct
29 Correct 3 ms 844 KB Output is correct
30 Correct 3 ms 844 KB Output is correct
31 Correct 3 ms 844 KB Output is correct
32 Correct 3 ms 844 KB Output is correct
33 Correct 3 ms 844 KB Output is correct
34 Correct 3 ms 812 KB Output is correct
35 Correct 5 ms 1000 KB Output is correct
36 Correct 5 ms 972 KB Output is correct
37 Correct 5 ms 940 KB Output is correct
38 Correct 3 ms 844 KB Output is correct
39 Correct 5 ms 972 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 844 KB Output is correct
44 Correct 4 ms 808 KB Output is correct
45 Correct 4 ms 844 KB Output is correct
46 Correct 3 ms 844 KB Output is correct
47 Correct 3 ms 844 KB Output is correct
48 Correct 3 ms 844 KB Output is correct
49 Correct 4 ms 844 KB Output is correct
50 Correct 3 ms 812 KB Output is correct
51 Correct 3 ms 844 KB Output is correct
52 Correct 3 ms 844 KB Output is correct
53 Correct 3 ms 812 KB Output is correct
54 Correct 3 ms 844 KB Output is correct
55 Correct 4 ms 748 KB Output is correct
56 Correct 4 ms 716 KB Output is correct
57 Correct 4 ms 716 KB Output is correct
58 Correct 4 ms 716 KB Output is correct
59 Correct 4 ms 720 KB Output is correct
60 Correct 4 ms 748 KB Output is correct
61 Correct 4 ms 716 KB Output is correct
62 Correct 4 ms 716 KB Output is correct
63 Correct 3 ms 680 KB Output is correct
64 Correct 2 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 256 KB Output is correct
4 Correct 195 ms 24232 KB Output is correct
5 Correct 186 ms 24024 KB Output is correct
6 Correct 208 ms 23800 KB Output is correct
7 Correct 201 ms 23236 KB Output is correct
8 Correct 186 ms 24288 KB Output is correct
9 Correct 230 ms 24080 KB Output is correct
10 Correct 182 ms 23748 KB Output is correct
11 Correct 166 ms 23268 KB Output is correct
12 Correct 164 ms 22344 KB Output is correct
13 Correct 199 ms 22308 KB Output is correct
14 Correct 166 ms 22084 KB Output is correct
15 Correct 155 ms 21840 KB Output is correct
16 Correct 136 ms 20080 KB Output is correct
17 Correct 129 ms 20028 KB Output is correct
18 Correct 136 ms 19884 KB Output is correct
19 Correct 112 ms 19396 KB Output is correct
20 Correct 114 ms 19512 KB Output is correct
21 Correct 174 ms 19380 KB Output is correct
22 Correct 117 ms 19436 KB Output is correct
23 Correct 112 ms 19344 KB Output is correct
24 Correct 115 ms 19388 KB Output is correct
25 Correct 173 ms 19396 KB Output is correct
26 Correct 147 ms 19396 KB Output is correct
27 Correct 113 ms 19328 KB Output is correct
28 Correct 107 ms 19396 KB Output is correct
29 Correct 116 ms 19388 KB Output is correct
30 Correct 110 ms 19336 KB Output is correct
31 Correct 109 ms 19396 KB Output is correct
32 Correct 131 ms 19396 KB Output is correct
33 Correct 116 ms 19452 KB Output is correct
34 Correct 143 ms 21212 KB Output is correct
35 Correct 130 ms 20604 KB Output is correct
36 Correct 117 ms 19908 KB Output is correct
37 Correct 153 ms 21948 KB Output is correct
38 Correct 151 ms 21984 KB Output is correct
39 Correct 202 ms 21828 KB Output is correct
40 Correct 147 ms 21728 KB Output is correct
41 Correct 144 ms 21572 KB Output is correct
42 Correct 118 ms 19328 KB Output is correct
43 Correct 166 ms 21832 KB Output is correct
44 Correct 191 ms 21768 KB Output is correct
45 Correct 192 ms 21668 KB Output is correct
46 Correct 159 ms 21572 KB Output is correct
47 Correct 0 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 0 ms 204 KB Output is correct
50 Correct 0 ms 204 KB Output is correct
51 Correct 1 ms 204 KB Output is correct
52 Correct 0 ms 204 KB Output is correct
53 Correct 0 ms 204 KB Output is correct
54 Correct 0 ms 288 KB Output is correct
55 Correct 0 ms 204 KB Output is correct
56 Correct 0 ms 204 KB Output is correct
57 Correct 0 ms 204 KB Output is correct
58 Correct 0 ms 204 KB Output is correct
59 Correct 1 ms 204 KB Output is correct
60 Correct 0 ms 204 KB Output is correct
61 Correct 0 ms 204 KB Output is correct
62 Correct 0 ms 204 KB Output is correct
63 Correct 0 ms 204 KB Output is correct
64 Correct 0 ms 204 KB Output is correct
65 Correct 1 ms 204 KB Output is correct
66 Correct 0 ms 204 KB Output is correct
67 Correct 0 ms 204 KB Output is correct
68 Correct 0 ms 204 KB Output is correct
69 Correct 0 ms 204 KB Output is correct
70 Correct 0 ms 204 KB Output is correct
71 Correct 0 ms 204 KB Output is correct
72 Correct 1 ms 204 KB Output is correct
73 Correct 1 ms 284 KB Output is correct
74 Correct 3 ms 844 KB Output is correct
75 Correct 3 ms 844 KB Output is correct
76 Correct 3 ms 844 KB Output is correct
77 Correct 3 ms 844 KB Output is correct
78 Correct 3 ms 844 KB Output is correct
79 Correct 3 ms 844 KB Output is correct
80 Correct 3 ms 812 KB Output is correct
81 Correct 5 ms 1000 KB Output is correct
82 Correct 5 ms 972 KB Output is correct
83 Correct 5 ms 940 KB Output is correct
84 Correct 3 ms 844 KB Output is correct
85 Correct 5 ms 972 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 844 KB Output is correct
90 Correct 4 ms 808 KB Output is correct
91 Correct 4 ms 844 KB Output is correct
92 Correct 3 ms 844 KB Output is correct
93 Correct 3 ms 844 KB Output is correct
94 Correct 3 ms 844 KB Output is correct
95 Correct 4 ms 844 KB Output is correct
96 Correct 3 ms 812 KB Output is correct
97 Correct 3 ms 844 KB Output is correct
98 Correct 3 ms 844 KB Output is correct
99 Correct 3 ms 812 KB Output is correct
100 Correct 3 ms 844 KB Output is correct
101 Correct 4 ms 748 KB Output is correct
102 Correct 4 ms 716 KB Output is correct
103 Correct 4 ms 716 KB Output is correct
104 Correct 4 ms 716 KB Output is correct
105 Correct 4 ms 720 KB Output is correct
106 Correct 4 ms 748 KB Output is correct
107 Correct 4 ms 716 KB Output is correct
108 Correct 4 ms 716 KB Output is correct
109 Correct 3 ms 680 KB Output is correct
110 Correct 2 ms 588 KB Output is correct
111 Correct 136 ms 19384 KB Output is correct
112 Correct 140 ms 19432 KB Output is correct
113 Correct 139 ms 19396 KB Output is correct
114 Correct 155 ms 19416 KB Output is correct
115 Correct 135 ms 19396 KB Output is correct
116 Correct 141 ms 19384 KB Output is correct
117 Correct 134 ms 19380 KB Output is correct
118 Correct 271 ms 24280 KB Output is correct
119 Correct 245 ms 23736 KB Output is correct
120 Correct 194 ms 21828 KB Output is correct
121 Correct 150 ms 19452 KB Output is correct
122 Correct 220 ms 22340 KB Output is correct
123 Correct 206 ms 22092 KB Output is correct
124 Correct 205 ms 21908 KB Output is correct
125 Correct 133 ms 19320 KB Output is correct
126 Correct 161 ms 20036 KB Output is correct
127 Correct 168 ms 19924 KB Output is correct
128 Correct 163 ms 19920 KB Output is correct
129 Correct 147 ms 19396 KB Output is correct
130 Correct 145 ms 19512 KB Output is correct
131 Correct 147 ms 19440 KB Output is correct
132 Correct 146 ms 19528 KB Output is correct
133 Correct 136 ms 19380 KB Output is correct
134 Correct 140 ms 19408 KB Output is correct
135 Correct 140 ms 19368 KB Output is correct
136 Correct 143 ms 19452 KB Output is correct
137 Correct 132 ms 19360 KB Output is correct
138 Correct 136 ms 19424 KB Output is correct
139 Correct 137 ms 19388 KB Output is correct
140 Correct 140 ms 19644 KB Output is correct
141 Correct 135 ms 19424 KB Output is correct
142 Correct 143 ms 16772 KB Output is correct
143 Correct 146 ms 16788 KB Output is correct
144 Correct 157 ms 16896 KB Output is correct
145 Correct 144 ms 16912 KB Output is correct
146 Correct 144 ms 16756 KB Output is correct
147 Correct 142 ms 16708 KB Output is correct
148 Correct 140 ms 16580 KB Output is correct
149 Correct 138 ms 16444 KB Output is correct
150 Correct 153 ms 16324 KB Output is correct
151 Correct 141 ms 15796 KB Output is correct
152 Correct 64 ms 11588 KB Output is correct
153 Correct 145 ms 16876 KB Output is correct
154 Correct 141 ms 16836 KB Output is correct
155 Correct 140 ms 16728 KB Output is correct
156 Correct 137 ms 16460 KB Output is correct
157 Correct 150 ms 16452 KB Output is correct
158 Correct 154 ms 16452 KB Output is correct
159 Correct 128 ms 15832 KB Output is correct
160 Correct 66 ms 11572 KB Output is correct
161 Correct 194 ms 18116 KB Output is correct
162 Correct 175 ms 17976 KB Output is correct
163 Correct 176 ms 17928 KB Output is correct
164 Correct 174 ms 17808 KB Output is correct
165 Correct 187 ms 17680 KB Output is correct
166 Correct 107 ms 19372 KB Output is correct
167 Correct 153 ms 21880 KB Output is correct
168 Correct 154 ms 21732 KB Output is correct
169 Correct 157 ms 21688 KB Output is correct
170 Correct 148 ms 21572 KB Output is correct
171 Correct 151 ms 21428 KB Output is correct
172 Correct 155 ms 22048 KB Output is correct
173 Correct 164 ms 14132 KB Output is correct
174 Correct 157 ms 14180 KB Output is correct
175 Correct 163 ms 14180 KB Output is correct
176 Correct 145 ms 13636 KB Output is correct