Submission #507678

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
507678	2022-01-13T00:57:56 Z	penguinhacker	Osumnjičeni (COCI21_osumnjiceni)	C++14	110 / 110	275 ms	26808 KB

Main

#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define ar array

const int mxN=2e5;
int n, q, l[mxN], r[mxN], anc[mxN][18];

int main() {
	ios::sync_with_stdio(0);
	cin.tie(0);
	cin >> n;
	for (int i=0; i<n; ++i)
		cin >> l[i] >> r[i];
	set<ar<int, 2>> s;
	for (int i=n-1, j=n-1; ~i; --i) {
		while(1) {
			if (s.empty()||r[i]<(*s.begin())[0]||l[i]>(*s.rbegin())[1]) {
				s.insert({l[i], r[i]});
				break;
			}
			auto it=s.lower_bound({l[i], -1});
			if ((it==s.end()||r[i]<(*it)[0])&&(it==s.begin()||(*prev(it))[1]<l[i])) {
				s.insert({l[i], r[i]});
				break;
			}
			s.erase({l[j], r[j]});
			--j;
		}
		anc[i][0]=j+1;
	}
	for (int j=1; j<18; ++j)
		for (int i=0; i<n; ++i)
			anc[i][j]=anc[i][j-1]==n?n:anc[anc[i][j-1]][j-1];
	cin >> q;
	while(q--) {
		int a, b;
		cin >> a >> b, --a, --b;
		int ans=0;
		for (int i=17; ~i; --i)
			if (anc[a][i]<=b) {
				ans+=1<<i;
				a=anc[a][i];
			}
		cout << ans+1 << "\n";
	}
	return 0;
}

Subtask #1

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	88 ms	15928 KB	Output is correct
2	Correct	81 ms	15556 KB	Output is correct
3	Correct	76 ms	15796 KB	Output is correct
4	Correct	78 ms	15608 KB	Output is correct
5	Correct	80 ms	16604 KB	Output is correct
6	Correct	68 ms	15148 KB	Output is correct
7	Correct	74 ms	15384 KB	Output is correct
8	Correct	87 ms	15256 KB	Output is correct
9	Correct	85 ms	15816 KB	Output is correct
10	Correct	87 ms	15292 KB	Output is correct
11	Correct	169 ms	25232 KB	Output is correct
12	Correct	190 ms	23996 KB	Output is correct
13	Correct	151 ms	23712 KB	Output is correct
14	Correct	179 ms	21512 KB	Output is correct
15	Correct	172 ms	19700 KB	Output is correct
16	Correct	0 ms	316 KB	Output is correct
17	Correct	73 ms	15880 KB	Output is correct

Subtask #2

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	696 KB	Output is correct
2	Correct	4 ms	748 KB	Output is correct
3	Correct	3 ms	668 KB	Output is correct
4	Correct	3 ms	716 KB	Output is correct
5	Correct	3 ms	716 KB	Output is correct
6	Correct	3 ms	800 KB	Output is correct
7	Correct	3 ms	744 KB	Output is correct
8	Correct	3 ms	764 KB	Output is correct
9	Correct	4 ms	716 KB	Output is correct
10	Correct	4 ms	716 KB	Output is correct
11	Correct	4 ms	988 KB	Output is correct
12	Correct	4 ms	972 KB	Output is correct
13	Correct	4 ms	844 KB	Output is correct
14	Correct	4 ms	744 KB	Output is correct
15	Correct	4 ms	716 KB	Output is correct
16	Correct	0 ms	320 KB	Output is correct
17	Correct	3 ms	712 KB	Output is correct

Subtask #3

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	696 KB	Output is correct
2	Correct	4 ms	748 KB	Output is correct
3	Correct	3 ms	668 KB	Output is correct
4	Correct	3 ms	716 KB	Output is correct
5	Correct	3 ms	716 KB	Output is correct
6	Correct	3 ms	800 KB	Output is correct
7	Correct	3 ms	744 KB	Output is correct
8	Correct	3 ms	764 KB	Output is correct
9	Correct	4 ms	716 KB	Output is correct
10	Correct	4 ms	716 KB	Output is correct
11	Correct	4 ms	988 KB	Output is correct
12	Correct	4 ms	972 KB	Output is correct
13	Correct	4 ms	844 KB	Output is correct
14	Correct	4 ms	744 KB	Output is correct
15	Correct	4 ms	716 KB	Output is correct
16	Correct	0 ms	320 KB	Output is correct
17	Correct	3 ms	712 KB	Output is correct
18	Correct	74 ms	2060 KB	Output is correct
19	Correct	59 ms	1688 KB	Output is correct
20	Correct	67 ms	1728 KB	Output is correct
21	Correct	61 ms	1728 KB	Output is correct
22	Correct	63 ms	1716 KB	Output is correct
23	Correct	60 ms	1676 KB	Output is correct
24	Correct	65 ms	1740 KB	Output is correct
25	Correct	63 ms	1732 KB	Output is correct
26	Correct	61 ms	1760 KB	Output is correct
27	Correct	63 ms	1748 KB	Output is correct
28	Correct	44 ms	1648 KB	Output is correct
29	Correct	47 ms	1432 KB	Output is correct
30	Correct	50 ms	1360 KB	Output is correct
31	Correct	48 ms	1248 KB	Output is correct
32	Correct	47 ms	1328 KB	Output is correct
33	Correct	0 ms	332 KB	Output is correct
34	Correct	54 ms	1880 KB	Output is correct

Subtask #4

20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	79 ms	16580 KB	Output is correct
2	Correct	90 ms	15948 KB	Output is correct
3	Correct	76 ms	15052 KB	Output is correct
4	Correct	73 ms	14840 KB	Output is correct
5	Correct	74 ms	15128 KB	Output is correct
6	Correct	69 ms	15796 KB	Output is correct
7	Correct	87 ms	15068 KB	Output is correct
8	Correct	80 ms	16452 KB	Output is correct
9	Correct	78 ms	16488 KB	Output is correct
10	Correct	94 ms	17468 KB	Output is correct
11	Correct	153 ms	23720 KB	Output is correct
12	Correct	171 ms	26012 KB	Output is correct
13	Correct	159 ms	23396 KB	Output is correct
14	Correct	161 ms	19800 KB	Output is correct
15	Correct	188 ms	21564 KB	Output is correct
16	Correct	0 ms	204 KB	Output is correct
17	Correct	71 ms	15460 KB	Output is correct

Subtask #5

50.0 / 50.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	88 ms	15928 KB	Output is correct
2	Correct	81 ms	15556 KB	Output is correct
3	Correct	76 ms	15796 KB	Output is correct
4	Correct	78 ms	15608 KB	Output is correct
5	Correct	80 ms	16604 KB	Output is correct
6	Correct	68 ms	15148 KB	Output is correct
7	Correct	74 ms	15384 KB	Output is correct
8	Correct	87 ms	15256 KB	Output is correct
9	Correct	85 ms	15816 KB	Output is correct
10	Correct	87 ms	15292 KB	Output is correct
11	Correct	169 ms	25232 KB	Output is correct
12	Correct	190 ms	23996 KB	Output is correct
13	Correct	151 ms	23712 KB	Output is correct
14	Correct	179 ms	21512 KB	Output is correct
15	Correct	172 ms	19700 KB	Output is correct
16	Correct	0 ms	316 KB	Output is correct
17	Correct	73 ms	15880 KB	Output is correct
18	Correct	4 ms	696 KB	Output is correct
19	Correct	4 ms	748 KB	Output is correct
20	Correct	3 ms	668 KB	Output is correct
21	Correct	3 ms	716 KB	Output is correct
22	Correct	3 ms	716 KB	Output is correct
23	Correct	3 ms	800 KB	Output is correct
24	Correct	3 ms	744 KB	Output is correct
25	Correct	3 ms	764 KB	Output is correct
26	Correct	4 ms	716 KB	Output is correct
27	Correct	4 ms	716 KB	Output is correct
28	Correct	4 ms	988 KB	Output is correct
29	Correct	4 ms	972 KB	Output is correct
30	Correct	4 ms	844 KB	Output is correct
31	Correct	4 ms	744 KB	Output is correct
32	Correct	4 ms	716 KB	Output is correct
33	Correct	0 ms	320 KB	Output is correct
34	Correct	3 ms	712 KB	Output is correct
35	Correct	74 ms	2060 KB	Output is correct
36	Correct	59 ms	1688 KB	Output is correct
37	Correct	67 ms	1728 KB	Output is correct
38	Correct	61 ms	1728 KB	Output is correct
39	Correct	63 ms	1716 KB	Output is correct
40	Correct	60 ms	1676 KB	Output is correct
41	Correct	65 ms	1740 KB	Output is correct
42	Correct	63 ms	1732 KB	Output is correct
43	Correct	61 ms	1760 KB	Output is correct
44	Correct	63 ms	1748 KB	Output is correct
45	Correct	44 ms	1648 KB	Output is correct
46	Correct	47 ms	1432 KB	Output is correct
47	Correct	50 ms	1360 KB	Output is correct
48	Correct	48 ms	1248 KB	Output is correct
49	Correct	47 ms	1328 KB	Output is correct
50	Correct	0 ms	332 KB	Output is correct
51	Correct	54 ms	1880 KB	Output is correct
52	Correct	79 ms	16580 KB	Output is correct
53	Correct	90 ms	15948 KB	Output is correct
54	Correct	76 ms	15052 KB	Output is correct
55	Correct	73 ms	14840 KB	Output is correct
56	Correct	74 ms	15128 KB	Output is correct
57	Correct	69 ms	15796 KB	Output is correct
58	Correct	87 ms	15068 KB	Output is correct
59	Correct	80 ms	16452 KB	Output is correct
60	Correct	78 ms	16488 KB	Output is correct
61	Correct	94 ms	17468 KB	Output is correct
62	Correct	153 ms	23720 KB	Output is correct
63	Correct	171 ms	26012 KB	Output is correct
64	Correct	159 ms	23396 KB	Output is correct
65	Correct	161 ms	19800 KB	Output is correct
66	Correct	188 ms	21564 KB	Output is correct
67	Correct	0 ms	204 KB	Output is correct
68	Correct	71 ms	15460 KB	Output is correct
69	Correct	247 ms	17312 KB	Output is correct
70	Correct	275 ms	19156 KB	Output is correct
71	Correct	232 ms	18876 KB	Output is correct
72	Correct	237 ms	18664 KB	Output is correct
73	Correct	255 ms	17176 KB	Output is correct
74	Correct	256 ms	17692 KB	Output is correct
75	Correct	243 ms	18112 KB	Output is correct
76	Correct	252 ms	20732 KB	Output is correct
77	Correct	232 ms	17344 KB	Output is correct
78	Correct	240 ms	16964 KB	Output is correct
79	Correct	227 ms	26808 KB	Output is correct
80	Correct	217 ms	24544 KB	Output is correct
81	Correct	219 ms	24392 KB	Output is correct
82	Correct	241 ms	20720 KB	Output is correct
83	Correct	222 ms	20492 KB	Output is correct
84	Correct	1 ms	308 KB	Output is correct
85	Correct	142 ms	17792 KB	Output is correct