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#292264#7182. Very Sparse TableOAleksaAC ✓719ms49316kbC++142.1kb2023-12-27 22:16:532023-12-27 22:16:54

Judging History

你现在查看的是最新测评结果

  • [2023-12-27 22:16:54]
  • 评测
  • 测评结果:AC
  • 用时:719ms
  • 内存:49316kb
  • [2023-12-27 22:16:53]
  • 提交

answer

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define f first
#define s second
const int N = (1 << 16) + 69;
set<pair<int, int>> was;
vector<tuple<int, int, int>> edges; 
vector<int> g[N];
int n, q;
void solve(int l, int r, int B) {
	vector<int> c;
	for (int i = l;i <= r;i += B - 1)
		c.push_back(i);
	if (c.back() != r)
		c.push_back(r);
	for (int j = 1;j < (int)c.size();j++) {
		int l = c[j - 1], r = c[j];
		for (int i = r - 1;i >= l;i--) {
			if (was.count({i, r}))
				continue;
			was.insert({i, r});
			g[i].push_back(r);
			edges.push_back({i, i + 1, r});
		}
	}
	for (int j = 1;j < (int)c.size();j++) {
		int l = c[j - 1], r = c[j];
		for (int i = l + 1;i <= r;i++) {
			if (was.count({l, i}))
				continue;
			was.insert({l, i});
			g[l].push_back(i);
			edges.push_back({l, i - 1, i});
		}
	}
	for (int i = (int)c.size() - 1;i >= 0;i--) {
		for (int j = i + 1;j < (int)c.size();j++) {
			if (was.count({c[i], c[j]}))
				continue;
			was.insert({c[i], c[j]});
			g[c[i]].push_back(c[j]);
			edges.push_back({c[i], c[j - 1], c[j]});
		}
	}
}

signed main() {
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
  int tt = 1;
  //cin >> tt;
  while (tt--) {
		cin >> n;
		for (int i = 1;i <= n;i++) {
			was.insert({i - 1, i});
			g[i - 1].push_back(i);
		}
		solve(0, n, 256);
		for (int i = 0;i <= n;i += 255) 
			solve(i, min(n, i + 255), 16);
		for (int i = 0;i <= n;i += 15)
			solve(i, min(n, i + 15), 4);
		cout << edges.size() << endl;
		for (auto u : edges) {
			int a, b, c;
			tie(a, b, c) = u;
			cout << a << " " << b << " " << c << endl;
		}
		cin >> q;
		while (q--) {
			int x, y;
			cin >> x >> y;
			int t = x;
			int cc = 0;
			while (t != y) {
				int mx = 0, s = 0;
				cout << t << " ";
				cc++;
				for (auto u : g[t]) {
					if (u == y) {
						t = y;
						break;
					}
					if (u > mx && u <= y) {
						mx = u;
						s = u;
					}
				}
				if (t != y)
					t = s;
				cc++;
				if (cc > 4)
					break;
			}
			cout << y << endl;
		}
  }
  return 0;
}

详细

Test #1:

score: 100
Accepted
time: 0ms
memory: 5132kb

input:

9
45
0 1
0 2
0 3
0 4
0 5
0 6
0 7
0 8
0 9
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
2 3
2 4
2 5
2 6
2 7
2 8
2 9
3 4
3 5
3 6
3 7
3 8
3 9
4 5
4 6
4 7
4 8
4 9
5 6
5 7
5 8
5 9
6 7
6 8
6 9
7 8
7 9
8 9

output:

20
7 8 9
6 7 9
5 6 9
4 5 9
3 4 9
2 3 9
1 2 9
0 1 9
0 1 2
0 2 3
0 3 4
0 4 5
0 5 6
0 6 7
0 7 8
1 2 3
4 5 6
3 4 6
3 4 5
6 7 8
0 1
0 2
0 3
0 4
0 5
0 6
0 7
0 8
0 9
1 2
1 3
1 3 4
1 3 5
1 3 6
1 3 6 7
1 3 6 8
1 9
2 3
2 3 4
2 3 5
2 3 6
2 3 6 7
2 3 6 8
2 9
3 4
3 5
3 6
3 6 7
3 6 8
3 9
4 5
4 6
4 6 7
4 6 8
4 9
5...

result:

ok edges: 20

Test #2:

score: 0
Accepted
time: 0ms
memory: 5136kb

input:

30
465
0 1
0 2
0 3
0 4
0 5
0 6
0 7
0 8
0 9
0 10
0 11
0 12
0 13
0 14
0 15
0 16
0 17
0 18
0 19
0 20
0 21
0 22
0 23
0 24
0 25
0 26
0 27
0 28
0 29
0 30
1 2
1 3
1 4
1 5
1 6
1 7
1 8
1 9
1 10
1 11
1 12
1 13
1 14
1 15
1 16
1 17
1 18
1 19
1 20
1 21
1 22
1 23
1 24
1 25
1 26
1 27
1 28
1 29
1 30
2 3
2 4
2 5
2 6...

output:

111
28 29 30
27 28 30
26 27 30
25 26 30
24 25 30
23 24 30
22 23 30
21 22 30
20 21 30
19 20 30
18 19 30
17 18 30
16 17 30
15 16 30
14 15 30
13 14 30
12 13 30
11 12 30
10 11 30
9 10 30
8 9 30
7 8 30
6 7 30
5 6 30
4 5 30
3 4 30
2 3 30
1 2 30
0 1 30
0 1 2
0 2 3
0 3 4
0 4 5
0 5 6
0 6 7
0 7 8
0 8 9
0 9 10...

result:

ok edges: 111

Test #3:

score: 0
Accepted
time: 219ms
memory: 5580kb

input:

736
200000
170 268
126 166
565 723
664 735
61 524
226 234
146 314
217 272
294 713
115 381
563 706
74 567
552 614
120 211
472 620
213 432
488 623
447 564
96 129
331 354
79 677
50 547
174 568
56 129
189 227
55 701
244 253
264 715
154 220
380 657
46 390
53 161
325 537
666 696
64 465
391 659
284 448
207...

output:

3706
253 254 255
252 253 255
251 252 255
250 251 255
249 250 255
248 249 255
247 248 255
246 247 255
245 246 255
244 245 255
243 244 255
242 243 255
241 242 255
240 241 255
239 240 255
238 239 255
237 238 255
236 237 255
235 236 255
234 235 255
233 234 255
232 233 255
231 232 255
230 231 255
229 230...

result:

ok edges: 3706

Test #4:

score: 0
Accepted
time: 688ms
memory: 47612kb

input:

65536
200000
51949 58727
7943 43298
6290 7369
41493 53070
24229 36675
28087 49947
11703 48217
19923 24739
2144 59777
53830 56793
13509 37211
2300 38595
27415 42879
24616 48531
58341 63327
20628 38407
48616 60290
7450 61685
37010 47595
22164 42732
19181 29850
35383 43587
39257 44397
19340 45183
34523...

output:

362370
253 254 255
252 253 255
251 252 255
250 251 255
249 250 255
248 249 255
247 248 255
246 247 255
245 246 255
244 245 255
243 244 255
242 243 255
241 242 255
240 241 255
239 240 255
238 239 255
237 238 255
236 237 255
235 236 255
234 235 255
233 234 255
232 233 255
231 232 255
230 231 255
229 2...

result:

ok edges: 362370

Test #5:

score: 0
Accepted
time: 1ms
memory: 5104kb

input:

0
0

output:

0

result:

ok edges: 0

Test #6:

score: 0
Accepted
time: 0ms
memory: 5092kb

input:

1
1
0 1

output:

0
0 1

result:

ok edges: 0

Test #7:

score: 0
Accepted
time: 0ms
memory: 5116kb

input:

2
3
0 1
0 2
1 2

output:

1
0 1 2
0 1
0 2
1 2

result:

ok edges: 1

Test #8:

score: 0
Accepted
time: 1ms
memory: 5260kb

input:

3
6
0 1
0 2
0 3
1 2
1 3
2 3

output:

3
1 2 3
0 1 3
0 1 2
0 1
0 2
0 3
1 2
1 3
2 3

result:

ok edges: 3

Test #9:

score: 0
Accepted
time: 719ms
memory: 49316kb

input:

65535
200000
35006 46944
17075 57351
24605 50445
5938 60705
15221 40233
28599 38915
1132 35574
8555 31494
13644 35806
44940 55401
9503 59206
21011 26540
41156 62487
57510 64305
9254 25610
17301 47249
34083 49167
48018 64394
38855 62175
15464 22525
23728 60275
54028 63810
22711 53902
5984 48625
5838 ...

output:

362113
253 254 255
252 253 255
251 252 255
250 251 255
249 250 255
248 249 255
247 248 255
246 247 255
245 246 255
244 245 255
243 244 255
242 243 255
241 242 255
240 241 255
239 240 255
238 239 255
237 238 255
236 237 255
235 236 255
234 235 255
233 234 255
232 233 255
231 232 255
230 231 255
229 2...

result:

ok edges: 362113

Test #10:

score: 0
Accepted
time: 684ms
memory: 47160kb

input:

64800
200000
55124 62263
24992 39760
32262 37059
25987 42889
10413 64701
7223 43221
45810 63205
11437 29357
10814 52096
1154 36319
10730 54157
18473 26729
9152 23374
5426 12744
3502 37577
5559 37160
30503 62433
12426 47332
14933 62086
8781 21527
27180 53773
29658 46742
20592 61553
8337 27197
8024 38...

output:

357870
253 254 255
252 253 255
251 252 255
250 251 255
249 250 255
248 249 255
247 248 255
246 247 255
245 246 255
244 245 255
243 244 255
242 243 255
241 242 255
240 241 255
239 240 255
238 239 255
237 238 255
236 237 255
235 236 255
234 235 255
233 234 255
232 233 255
231 232 255
230 231 255
229 2...

result:

ok edges: 357870

Extra Test:

score: 0
Extra Test Passed