oj.uz

Submission #285456

# Submission time Handle Problem Language Result Execution time Memory
285456 2020-08-29T03:47:46 Z tmwilliamlin168 Rectangles (IOI19_rect) C++14
100 / 100
 4122 ms 970580 KB 
#include "rect.h"
#include <bits/stdc++.h>
using namespace std;

#define ar array

const int mxN=2.5e3;
int n, m, l[mxN], r[mxN], ft[mxN+1];
vector<ar<int, 2>> p[mxN][mxN][2];
vector<int> d[mxN][mxN];

void upd(int i, int x) {
	for(++i; i<=m; i+=i&-i)
		ft[i]+=x;
}

int qry(int i) {
	int r=0;
	for(; i; i-=i&-i)
		r+=ft[i];
	return r;
}

void gr(vector<vector<int>> a, int b) {
	int n=a.size(), m=a[0].size();
	vector<ar<int, 3>> s;
	for(int i=0; i<n; ++i) {
		for(int j=0; j<m; ++j) {
			l[j]=j-1;
			while(~l[j]&&a[i][l[j]]<=a[i][j])
				l[j]=l[l[j]];
		}
		for(int j=m-1; ~j; --j) {
			r[j]=j+1;
			while(r[j]<m&&a[i][r[j]]<=a[i][j])
				r[j]=r[r[j]];
			if(~l[j]&&r[j]<m)
				d[l[j]+1][r[j]-1].push_back(i);
		}
	}
	for(int l1=0; l1<m; ++l1) {
		for(int r1=0; r1<m; ++r1) {
			for(int i=0, j; i<d[l1][r1].size(); i=j+1) {
				for(j=i; j+1<d[l1][r1].size()&&d[l1][r1][j+1]<=d[l1][r1][j]+1; ++j);
				int l2=d[l1][r1][i], r2=d[l1][r1][j], x2=r2, y2=r1;
				if(b)
					swap(x2, y2);
				for(int k=l2; k<=r2; ++k) {
					int x=k, y=l1;
					if(b)
						swap(x, y);
					p[x][y][b].push_back({-x2, y2});
				}
			}
			d[l1][r1].clear();
		}
	}
}

long long count_rectangles(vector<vector<int>> a) {
	n=a.size();
	m=a[0].size();
	vector<vector<int>> b(m, vector<int>(n));
	for(int i=0; i<n; ++i)
		for(int j=0; j<m; ++j)
			b[j][i]=a[i][j];
	gr(a, 0);
	gr(b, 1);
//	int s=0;
//	for(int i=0; i<n; ++i)
//		for(int j=0; j<m; ++j)
//			s+=p[i][j][0].size()+p[i][j][1].size();
//	if(s>12e6)
//		return -1;
	int ans=0;
	for(int i=0; i<n; ++i) {
		for(int j=0; j<m; ++j) {
			for(int k : {0, 1})
				sort(p[i][j][k].begin(), p[i][j][k].end());
			int d=0;
			for(int c=0; c<p[i][j][1].size(); ++c) {
				while(d<p[i][j][0].size()&&p[i][j][0][d]<=p[i][j][1][c])
					upd(p[i][j][0][d++][1], 1);
				ans+=qry(p[i][j][1][c][1]+1);
			}
			while(d)
				upd(p[i][j][0][--d][1], -1);
		}
	}
	return ans;
}

Compilation message

rect.cpp: In function 'void gr(std::vector<std::vector<int> >, int)':
rect.cpp:43:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |    for(int i=0, j; i<d[l1][r1].size(); i=j+1) {
      |                    ~^~~~~~~~~~~~~~~~~
rect.cpp:44:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |     for(j=i; j+1<d[l1][r1].size()&&d[l1][r1][j+1]<=d[l1][r1][j]+1; ++j);
      |              ~~~^~~~~~~~~~~~~~~~~
rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:81:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   81 |    for(int c=0; c<p[i][j][1].size(); ++c) {
      |                 ~^~~~~~~~~~~~~~~~~~
rect.cpp:82:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::array<int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |     while(d<p[i][j][0].size()&&p[i][j][0][d]<=p[i][j][1][c])
      |           ~^~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 300 ms 440696 KB Output is correct
2 Correct 297 ms 440696 KB Output is correct
3 Correct 293 ms 440696 KB Output is correct
4 Correct 300 ms 440696 KB Output is correct
5 Correct 303 ms 440824 KB Output is correct
6 Correct 293 ms 440696 KB Output is correct
7 Correct 298 ms 440696 KB Output is correct
8 Correct 314 ms 440620 KB Output is correct
9 Correct 308 ms 440688 KB Output is correct
10 Correct 318 ms 440696 KB Output is correct
11 Correct 295 ms 440824 KB Output is correct
12 Correct 294 ms 440696 KB Output is correct
13 Correct 297 ms 440568 KB Output is correct
14 Correct 303 ms 440572 KB Output is correct
15 Correct 299 ms 440696 KB Output is correct
16 Correct 302 ms 440568 KB Output is correct
17 Correct 300 ms 440568 KB Output is correct
18 Correct 308 ms 440568 KB Output is correct
19 Correct 296 ms 440696 KB Output is correct
20 Correct 295 ms 440664 KB Output is correct
21 Correct 297 ms 440584 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 300 ms 440696 KB Output is correct
2 Correct 297 ms 440696 KB Output is correct
3 Correct 293 ms 440696 KB Output is correct
4 Correct 300 ms 440696 KB Output is correct
5 Correct 303 ms 440824 KB Output is correct
6 Correct 293 ms 440696 KB Output is correct
7 Correct 298 ms 440696 KB Output is correct
8 Correct 314 ms 440620 KB Output is correct
9 Correct 308 ms 440688 KB Output is correct
10 Correct 318 ms 440696 KB Output is correct
11 Correct 295 ms 440824 KB Output is correct
12 Correct 294 ms 440696 KB Output is correct
13 Correct 297 ms 440568 KB Output is correct
14 Correct 303 ms 440572 KB Output is correct
15 Correct 299 ms 440696 KB Output is correct
16 Correct 302 ms 440568 KB Output is correct
17 Correct 298 ms 441336 KB Output is correct
18 Correct 298 ms 441208 KB Output is correct
19 Correct 300 ms 441212 KB Output is correct
20 Correct 299 ms 440952 KB Output is correct
21 Correct 301 ms 441080 KB Output is correct
22 Correct 299 ms 441080 KB Output is correct
23 Correct 311 ms 441080 KB Output is correct
24 Correct 299 ms 440824 KB Output is correct
25 Correct 300 ms 440568 KB Output is correct
26 Correct 308 ms 440568 KB Output is correct
27 Correct 296 ms 440696 KB Output is correct
28 Correct 295 ms 440664 KB Output is correct
29 Correct 297 ms 440584 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 300 ms 440696 KB Output is correct
2 Correct 297 ms 440696 KB Output is correct
3 Correct 293 ms 440696 KB Output is correct
4 Correct 300 ms 440696 KB Output is correct
5 Correct 303 ms 440824 KB Output is correct
6 Correct 293 ms 440696 KB Output is correct
7 Correct 298 ms 440696 KB Output is correct
8 Correct 314 ms 440620 KB Output is correct
9 Correct 308 ms 440688 KB Output is correct
10 Correct 318 ms 440696 KB Output is correct
11 Correct 295 ms 440824 KB Output is correct
12 Correct 294 ms 440696 KB Output is correct
13 Correct 297 ms 440568 KB Output is correct
14 Correct 303 ms 440572 KB Output is correct
15 Correct 299 ms 440696 KB Output is correct
16 Correct 302 ms 440568 KB Output is correct
17 Correct 298 ms 441336 KB Output is correct
18 Correct 298 ms 441208 KB Output is correct
19 Correct 300 ms 441212 KB Output is correct
20 Correct 299 ms 440952 KB Output is correct
21 Correct 301 ms 441080 KB Output is correct
22 Correct 299 ms 441080 KB Output is correct
23 Correct 311 ms 441080 KB Output is correct
24 Correct 299 ms 440824 KB Output is correct
25 Correct 309 ms 444152 KB Output is correct
26 Correct 312 ms 444152 KB Output is correct
27 Correct 307 ms 444280 KB Output is correct
28 Correct 318 ms 442488 KB Output is correct
29 Correct 318 ms 443256 KB Output is correct
30 Correct 347 ms 443384 KB Output is correct
31 Correct 314 ms 443256 KB Output is correct
32 Correct 316 ms 443256 KB Output is correct
33 Correct 300 ms 440568 KB Output is correct
34 Correct 308 ms 440568 KB Output is correct
35 Correct 296 ms 440696 KB Output is correct
36 Correct 295 ms 440664 KB Output is correct
37 Correct 297 ms 440584 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 300 ms 440696 KB Output is correct
2 Correct 297 ms 440696 KB Output is correct
3 Correct 293 ms 440696 KB Output is correct
4 Correct 300 ms 440696 KB Output is correct
5 Correct 303 ms 440824 KB Output is correct
6 Correct 293 ms 440696 KB Output is correct
7 Correct 298 ms 440696 KB Output is correct
8 Correct 314 ms 440620 KB Output is correct
9 Correct 308 ms 440688 KB Output is correct
10 Correct 318 ms 440696 KB Output is correct
11 Correct 295 ms 440824 KB Output is correct
12 Correct 294 ms 440696 KB Output is correct
13 Correct 297 ms 440568 KB Output is correct
14 Correct 303 ms 440572 KB Output is correct
15 Correct 299 ms 440696 KB Output is correct
16 Correct 302 ms 440568 KB Output is correct
17 Correct 298 ms 441336 KB Output is correct
18 Correct 298 ms 441208 KB Output is correct
19 Correct 300 ms 441212 KB Output is correct
20 Correct 299 ms 440952 KB Output is correct
21 Correct 301 ms 441080 KB Output is correct
22 Correct 299 ms 441080 KB Output is correct
23 Correct 311 ms 441080 KB Output is correct
24 Correct 299 ms 440824 KB Output is correct
25 Correct 309 ms 444152 KB Output is correct
26 Correct 312 ms 444152 KB Output is correct
27 Correct 307 ms 444280 KB Output is correct
28 Correct 318 ms 442488 KB Output is correct
29 Correct 318 ms 443256 KB Output is correct
30 Correct 347 ms 443384 KB Output is correct
31 Correct 314 ms 443256 KB Output is correct
32 Correct 316 ms 443256 KB Output is correct
33 Correct 439 ms 472824 KB Output is correct
34 Correct 393 ms 467960 KB Output is correct
35 Correct 415 ms 468216 KB Output is correct
36 Correct 371 ms 463224 KB Output is correct
37 Correct 453 ms 483192 KB Output is correct
38 Correct 450 ms 486060 KB Output is correct
39 Correct 469 ms 483320 KB Output is correct
40 Correct 452 ms 483320 KB Output is correct
41 Correct 404 ms 458476 KB Output is correct
42 Correct 423 ms 461560 KB Output is correct
43 Correct 540 ms 470904 KB Output is correct
44 Correct 554 ms 471812 KB Output is correct
45 Correct 422 ms 456908 KB Output is correct
46 Correct 429 ms 456952 KB Output is correct
47 Correct 525 ms 470112 KB Output is correct
48 Correct 521 ms 470264 KB Output is correct
49 Correct 300 ms 440568 KB Output is correct
50 Correct 308 ms 440568 KB Output is correct
51 Correct 296 ms 440696 KB Output is correct
52 Correct 295 ms 440664 KB Output is correct
53 Correct 297 ms 440584 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 325 ms 441464 KB Output is correct
2 Correct 311 ms 441336 KB Output is correct
3 Correct 318 ms 441080 KB Output is correct
4 Correct 294 ms 440568 KB Output is correct
5 Correct 318 ms 441336 KB Output is correct
6 Correct 326 ms 441384 KB Output is correct
7 Correct 324 ms 441336 KB Output is correct
8 Correct 318 ms 441336 KB Output is correct
9 Correct 321 ms 441336 KB Output is correct
10 Correct 319 ms 441208 KB Output is correct
11 Correct 319 ms 441208 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 300 ms 440696 KB Output is correct
2 Correct 990 ms 546032 KB Output is correct
3 Correct 1819 ms 656868 KB Output is correct
4 Correct 1826 ms 657912 KB Output is correct
5 Correct 1901 ms 657784 KB Output is correct
6 Correct 473 ms 490676 KB Output is correct
7 Correct 614 ms 533816 KB Output is correct
8 Correct 626 ms 540152 KB Output is correct
9 Correct 300 ms 440568 KB Output is correct
10 Correct 308 ms 440568 KB Output is correct
11 Correct 296 ms 440696 KB Output is correct
12 Correct 295 ms 440664 KB Output is correct
13 Correct 297 ms 440584 KB Output is correct

Subtask #7
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 300 ms 440696 KB Output is correct
2 Correct 297 ms 440696 KB Output is correct
3 Correct 293 ms 440696 KB Output is correct
4 Correct 300 ms 440696 KB Output is correct
5 Correct 303 ms 440824 KB Output is correct
6 Correct 293 ms 440696 KB Output is correct
7 Correct 298 ms 440696 KB Output is correct
8 Correct 314 ms 440620 KB Output is correct
9 Correct 308 ms 440688 KB Output is correct
10 Correct 318 ms 440696 KB Output is correct
11 Correct 295 ms 440824 KB Output is correct
12 Correct 294 ms 440696 KB Output is correct
13 Correct 297 ms 440568 KB Output is correct
14 Correct 303 ms 440572 KB Output is correct
15 Correct 299 ms 440696 KB Output is correct
16 Correct 302 ms 440568 KB Output is correct
17 Correct 298 ms 441336 KB Output is correct
18 Correct 298 ms 441208 KB Output is correct
19 Correct 300 ms 441212 KB Output is correct
20 Correct 299 ms 440952 KB Output is correct
21 Correct 301 ms 441080 KB Output is correct
22 Correct 299 ms 441080 KB Output is correct
23 Correct 311 ms 441080 KB Output is correct
24 Correct 299 ms 440824 KB Output is correct
25 Correct 309 ms 444152 KB Output is correct
26 Correct 312 ms 444152 KB Output is correct
27 Correct 307 ms 444280 KB Output is correct
28 Correct 318 ms 442488 KB Output is correct
29 Correct 318 ms 443256 KB Output is correct
30 Correct 347 ms 443384 KB Output is correct
31 Correct 314 ms 443256 KB Output is correct
32 Correct 316 ms 443256 KB Output is correct
33 Correct 439 ms 472824 KB Output is correct
34 Correct 393 ms 467960 KB Output is correct
35 Correct 415 ms 468216 KB Output is correct
36 Correct 371 ms 463224 KB Output is correct
37 Correct 453 ms 483192 KB Output is correct
38 Correct 450 ms 486060 KB Output is correct
39 Correct 469 ms 483320 KB Output is correct
40 Correct 452 ms 483320 KB Output is correct
41 Correct 404 ms 458476 KB Output is correct
42 Correct 423 ms 461560 KB Output is correct
43 Correct 540 ms 470904 KB Output is correct
44 Correct 554 ms 471812 KB Output is correct
45 Correct 422 ms 456908 KB Output is correct
46 Correct 429 ms 456952 KB Output is correct
47 Correct 525 ms 470112 KB Output is correct
48 Correct 521 ms 470264 KB Output is correct
49 Correct 325 ms 441464 KB Output is correct
50 Correct 311 ms 441336 KB Output is correct
51 Correct 318 ms 441080 KB Output is correct
52 Correct 294 ms 440568 KB Output is correct
53 Correct 318 ms 441336 KB Output is correct
54 Correct 326 ms 441384 KB Output is correct
55 Correct 324 ms 441336 KB Output is correct
56 Correct 318 ms 441336 KB Output is correct
57 Correct 321 ms 441336 KB Output is correct
58 Correct 319 ms 441208 KB Output is correct
59 Correct 319 ms 441208 KB Output is correct
60 Correct 300 ms 440696 KB Output is correct
61 Correct 990 ms 546032 KB Output is correct
62 Correct 1819 ms 656868 KB Output is correct
63 Correct 1826 ms 657912 KB Output is correct
64 Correct 1901 ms 657784 KB Output is correct
65 Correct 473 ms 490676 KB Output is correct
66 Correct 614 ms 533816 KB Output is correct
67 Correct 626 ms 540152 KB Output is correct
68 Correct 2659 ms 834056 KB Output is correct
69 Correct 1660 ms 766712 KB Output is correct
70 Correct 2688 ms 766584 KB Output is correct
71 Correct 1344 ms 699912 KB Output is correct
72 Correct 3562 ms 968156 KB Output is correct
73 Correct 2483 ms 685432 KB Output is correct
74 Correct 2659 ms 687628 KB Output is correct
75 Correct 4062 ms 813688 KB Output is correct
76 Correct 2601 ms 675960 KB Output is correct
77 Correct 3343 ms 748760 KB Output is correct
78 Correct 4122 ms 819184 KB Output is correct
79 Correct 2263 ms 662524 KB Output is correct
80 Correct 3700 ms 803896 KB Output is correct
81 Correct 3613 ms 793280 KB Output is correct
82 Correct 2241 ms 778568 KB Output is correct
83 Correct 3537 ms 970232 KB Output is correct
84 Correct 3570 ms 970548 KB Output is correct
85 Correct 3543 ms 970580 KB Output is correct
86 Correct 300 ms 440568 KB Output is correct
87 Correct 308 ms 440568 KB Output is correct
88 Correct 296 ms 440696 KB Output is correct
89 Correct 295 ms 440664 KB Output is correct
90 Correct 297 ms 440584 KB Output is correct