oj.uz

Submission #154444

# Submission time Handle Problem Language Result Execution time Memory
154444 2019-09-21T21:32:15 Z Dormi Rectangles (IOI19_rect) C++14
100 / 100
 4539 ms 736340 KB 
#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;
const int MAXN=2500;
int bit[MAXN+1];
int n,m;
vector<pii> rowranges[MAXN][MAXN];
vector<pii> colranges[MAXN][MAXN];
int preloc[MAXN];
int sufloc[MAXN];
pii deq[MAXN];
inline void update(int loc, int val){
	for(;loc<=n;loc+=loc&-loc)bit[loc]+=val;
}
inline int sum(int loc){
	int ans=0;
	for(;loc>0;loc-=loc&-loc)ans+=bit[loc];
	return ans;
}
long long count_rectangles(std::vector<std::vector<int>> a){
	n=a.size();
	m=a[0].size();
	for(int i=0;i<n;i++){
		int l=0,r=-1;
		for(int j=m-1;j>=0;j--){
			while(r>=l&&deq[r].second<=a[i][j])r--;
			if(r>=l)sufloc[j]=deq[r].first;
			else sufloc[j]=-1;
			deq[++r]={j,a[i][j]};
		}
		l=0,r=-1;
		for(int j=0;j<m;j++){
			while(r>=l&&deq[r].second<=a[i][j])r--;
			if(r>=l)preloc[j]=deq[r].first;
			else preloc[j]=-1;
			deq[++r]={j,a[i][j]};
			if(preloc[j]!=-1&&sufloc[j]!=-1){
				while(rowranges[i][preloc[j]+1].size()&&rowranges[i][preloc[j]+1].back().first==sufloc[j]-1)rowranges[i][preloc[j]+1].pop_back();
				rowranges[i][preloc[j]+1].emplace_back(sufloc[j]-1,1);
			}
		}
	}
	for(int i=0;i<m;i++){
		int l=0,r=-1;
		for(int j=n-1;j>=0;j--){
			while(r>=l&&deq[r].second<=a[j][i])r--;
			if(r>=l)sufloc[j]=deq[r].first;
			else sufloc[j]=-1;
			deq[++r]={j,a[j][i]};
		}
		l=0,r=-1;
		for(int j=0;j<n;j++){
			while(r>=l&&deq[r].second<=a[j][i])r--;
			if(r>=l)preloc[j]=deq[r].first;
			else preloc[j]=-1;
			deq[++r]={j,a[j][i]};
			if(preloc[j]!=-1&&sufloc[j]!=-1){
				while(colranges[preloc[j]+1][i].size()&&colranges[preloc[j]+1][i].back().first==sufloc[j]-1)colranges[preloc[j]+1][i].pop_back();
				colranges[preloc[j]+1][i].emplace_back(sufloc[j]-1,1);
			}
		}
	}
	for(int i=0;i<m;i++){
		for(int j=n-2;j>=0;j--){
			int l=0,r=0;
			while(l<rowranges[j][i].size()&&r<rowranges[j+1][i].size()){
				if(rowranges[j][i][l].first==rowranges[j+1][i][r].first){
					rowranges[j][i][l].second+=rowranges[j+1][i][r].second;
					l++;
				}
				else if(rowranges[j][i][l].first>rowranges[j+1][i][r].first){
					r++;
				}
				else l++;
			}
		}
	}
	for(int i=0;i<n;i++){
		for(int j=m-2;j>=0;j--){
			int l=0,r=0;
			while(l<colranges[i][j].size()&&r<colranges[i][j+1].size()){
				if(colranges[i][j][l].first==colranges[i][j+1][r].first){
					colranges[i][j][l].second+=colranges[i][j+1][r].second;
					l++;
				}
				else if(colranges[i][j][l].first>colranges[i][j+1][r].first){
					r++;
				}
				else l++;
			}
		}
	}
	int cnt=0;
	auto f = [&] (const pii& a, const pii& b) {
		return a.second<b.second;
	};
	for(int i=0;i<n;i++)for(int j=0;j<m;j++){
			sort(colranges[i][j].begin(),colranges[i][j].end(),f);
			int r=colranges[i][j].size();
			for(int k=(int)rowranges[i][j].size()-1;k>=0;k--){
				while(r>0&&colranges[i][j][r-1].second+j-1>=rowranges[i][j][k].first){
					r-=1;
					update(colranges[i][j][r].first+1,1);
				}
				cnt+=sum(rowranges[i][j][k].second+i);
			}
			for(int k=r;k<colranges[i][j].size();k++)update(colranges[i][j][k].first+1,-1);
		}
	return cnt;
}

Compilation message

rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:66:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while(l<rowranges[j][i].size()&&r<rowranges[j+1][i].size()){
          ~^~~~~~~~~~~~~~~~~~~~~~~
rect.cpp:66:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while(l<rowranges[j][i].size()&&r<rowranges[j+1][i].size()){
                                    ~^~~~~~~~~~~~~~~~~~~~~~~~~
rect.cpp:81:11: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while(l<colranges[i][j].size()&&r<colranges[i][j+1].size()){
          ~^~~~~~~~~~~~~~~~~~~~~~~
rect.cpp:81:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    while(l<colranges[i][j].size()&&r<colranges[i][j+1].size()){
                                    ~^~~~~~~~~~~~~~~~~~~~~~~~~
rect.cpp:107:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int k=r;k<colranges[i][j].size();k++)update(colranges[i][j][k].first+1,-1);
                ~^~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 278 ms 293968 KB Output is correct
2 Correct 305 ms 294008 KB Output is correct
3 Correct 268 ms 294064 KB Output is correct
4 Correct 267 ms 294008 KB Output is correct
5 Correct 267 ms 293916 KB Output is correct
6 Correct 277 ms 293880 KB Output is correct
7 Correct 266 ms 293956 KB Output is correct
8 Correct 313 ms 293880 KB Output is correct
9 Correct 270 ms 294012 KB Output is correct
10 Correct 267 ms 293896 KB Output is correct
11 Correct 277 ms 294008 KB Output is correct
12 Correct 267 ms 293880 KB Output is correct
13 Correct 266 ms 293880 KB Output is correct
14 Correct 321 ms 293880 KB Output is correct
15 Correct 273 ms 293880 KB Output is correct
16 Correct 267 ms 293880 KB Output is correct
17 Correct 270 ms 293952 KB Output is correct
18 Correct 267 ms 293880 KB Output is correct
19 Correct 269 ms 293880 KB Output is correct
20 Correct 270 ms 293820 KB Output is correct
21 Correct 266 ms 293972 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 278 ms 293968 KB Output is correct
2 Correct 305 ms 294008 KB Output is correct
3 Correct 268 ms 294064 KB Output is correct
4 Correct 267 ms 294008 KB Output is correct
5 Correct 267 ms 293916 KB Output is correct
6 Correct 277 ms 293880 KB Output is correct
7 Correct 266 ms 293956 KB Output is correct
8 Correct 313 ms 293880 KB Output is correct
9 Correct 270 ms 294012 KB Output is correct
10 Correct 267 ms 293896 KB Output is correct
11 Correct 277 ms 294008 KB Output is correct
12 Correct 267 ms 293880 KB Output is correct
13 Correct 266 ms 293880 KB Output is correct
14 Correct 321 ms 293880 KB Output is correct
15 Correct 273 ms 293880 KB Output is correct
16 Correct 267 ms 293880 KB Output is correct
17 Correct 268 ms 294264 KB Output is correct
18 Correct 270 ms 294280 KB Output is correct
19 Correct 271 ms 294348 KB Output is correct
20 Correct 271 ms 294168 KB Output is correct
21 Correct 273 ms 294136 KB Output is correct
22 Correct 271 ms 294108 KB Output is correct
23 Correct 273 ms 294220 KB Output is correct
24 Correct 268 ms 293996 KB Output is correct
25 Correct 270 ms 293952 KB Output is correct
26 Correct 267 ms 293880 KB Output is correct
27 Correct 269 ms 293880 KB Output is correct
28 Correct 270 ms 293820 KB Output is correct
29 Correct 266 ms 293972 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 278 ms 293968 KB Output is correct
2 Correct 305 ms 294008 KB Output is correct
3 Correct 268 ms 294064 KB Output is correct
4 Correct 267 ms 294008 KB Output is correct
5 Correct 267 ms 293916 KB Output is correct
6 Correct 277 ms 293880 KB Output is correct
7 Correct 266 ms 293956 KB Output is correct
8 Correct 313 ms 293880 KB Output is correct
9 Correct 270 ms 294012 KB Output is correct
10 Correct 267 ms 293896 KB Output is correct
11 Correct 277 ms 294008 KB Output is correct
12 Correct 267 ms 293880 KB Output is correct
13 Correct 266 ms 293880 KB Output is correct
14 Correct 321 ms 293880 KB Output is correct
15 Correct 273 ms 293880 KB Output is correct
16 Correct 267 ms 293880 KB Output is correct
17 Correct 268 ms 294264 KB Output is correct
18 Correct 270 ms 294280 KB Output is correct
19 Correct 271 ms 294348 KB Output is correct
20 Correct 271 ms 294168 KB Output is correct
21 Correct 273 ms 294136 KB Output is correct
22 Correct 271 ms 294108 KB Output is correct
23 Correct 273 ms 294220 KB Output is correct
24 Correct 268 ms 293996 KB Output is correct
25 Correct 282 ms 296880 KB Output is correct
26 Correct 314 ms 296872 KB Output is correct
27 Correct 322 ms 296956 KB Output is correct
28 Correct 325 ms 295160 KB Output is correct
29 Correct 342 ms 295800 KB Output is correct
30 Correct 324 ms 295900 KB Output is correct
31 Correct 294 ms 295820 KB Output is correct
32 Correct 284 ms 295832 KB Output is correct
33 Correct 270 ms 293952 KB Output is correct
34 Correct 267 ms 293880 KB Output is correct
35 Correct 269 ms 293880 KB Output is correct
36 Correct 270 ms 293820 KB Output is correct
37 Correct 266 ms 293972 KB Output is correct

Subtask #4
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 278 ms 293968 KB Output is correct
2 Correct 305 ms 294008 KB Output is correct
3 Correct 268 ms 294064 KB Output is correct
4 Correct 267 ms 294008 KB Output is correct
5 Correct 267 ms 293916 KB Output is correct
6 Correct 277 ms 293880 KB Output is correct
7 Correct 266 ms 293956 KB Output is correct
8 Correct 313 ms 293880 KB Output is correct
9 Correct 270 ms 294012 KB Output is correct
10 Correct 267 ms 293896 KB Output is correct
11 Correct 277 ms 294008 KB Output is correct
12 Correct 267 ms 293880 KB Output is correct
13 Correct 266 ms 293880 KB Output is correct
14 Correct 321 ms 293880 KB Output is correct
15 Correct 273 ms 293880 KB Output is correct
16 Correct 267 ms 293880 KB Output is correct
17 Correct 268 ms 294264 KB Output is correct
18 Correct 270 ms 294280 KB Output is correct
19 Correct 271 ms 294348 KB Output is correct
20 Correct 271 ms 294168 KB Output is correct
21 Correct 273 ms 294136 KB Output is correct
22 Correct 271 ms 294108 KB Output is correct
23 Correct 273 ms 294220 KB Output is correct
24 Correct 268 ms 293996 KB Output is correct
25 Correct 282 ms 296880 KB Output is correct
26 Correct 314 ms 296872 KB Output is correct
27 Correct 322 ms 296956 KB Output is correct
28 Correct 325 ms 295160 KB Output is correct
29 Correct 342 ms 295800 KB Output is correct
30 Correct 324 ms 295900 KB Output is correct
31 Correct 294 ms 295820 KB Output is correct
32 Correct 284 ms 295832 KB Output is correct
33 Correct 382 ms 316352 KB Output is correct
34 Correct 371 ms 311496 KB Output is correct
35 Correct 333 ms 311416 KB Output is correct
36 Correct 377 ms 306680 KB Output is correct
37 Correct 570 ms 331768 KB Output is correct
38 Correct 489 ms 331568 KB Output is correct
39 Correct 515 ms 332044 KB Output is correct
40 Correct 623 ms 329600 KB Output is correct
41 Correct 367 ms 306340 KB Output is correct
42 Correct 380 ms 308856 KB Output is correct
43 Correct 459 ms 317528 KB Output is correct
44 Correct 503 ms 319608 KB Output is correct
45 Correct 394 ms 306660 KB Output is correct
46 Correct 366 ms 306696 KB Output is correct
47 Correct 456 ms 317192 KB Output is correct
48 Correct 542 ms 318324 KB Output is correct
49 Correct 270 ms 293952 KB Output is correct
50 Correct 267 ms 293880 KB Output is correct
51 Correct 269 ms 293880 KB Output is correct
52 Correct 270 ms 293820 KB Output is correct
53 Correct 266 ms 293972 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 275 ms 294404 KB Output is correct
2 Correct 293 ms 294264 KB Output is correct
3 Correct 273 ms 294104 KB Output is correct
4 Correct 266 ms 293852 KB Output is correct
5 Correct 303 ms 294184 KB Output is correct
6 Correct 277 ms 294216 KB Output is correct
7 Correct 288 ms 294136 KB Output is correct
8 Correct 270 ms 294224 KB Output is correct
9 Correct 267 ms 294196 KB Output is correct
10 Correct 267 ms 293936 KB Output is correct
11 Correct 268 ms 294012 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 266 ms 293852 KB Output is correct
2 Correct 858 ms 366776 KB Output is correct
3 Correct 1668 ms 446056 KB Output is correct
4 Correct 1792 ms 446696 KB Output is correct
5 Correct 1739 ms 446812 KB Output is correct
6 Correct 428 ms 324060 KB Output is correct
7 Correct 657 ms 346016 KB Output is correct
8 Correct 640 ms 349020 KB Output is correct
9 Correct 270 ms 293952 KB Output is correct
10 Correct 267 ms 293880 KB Output is correct
11 Correct 269 ms 293880 KB Output is correct
12 Correct 270 ms 293820 KB Output is correct
13 Correct 266 ms 293972 KB Output is correct

Subtask #7
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 278 ms 293968 KB Output is correct
2 Correct 305 ms 294008 KB Output is correct
3 Correct 268 ms 294064 KB Output is correct
4 Correct 267 ms 294008 KB Output is correct
5 Correct 267 ms 293916 KB Output is correct
6 Correct 277 ms 293880 KB Output is correct
7 Correct 266 ms 293956 KB Output is correct
8 Correct 313 ms 293880 KB Output is correct
9 Correct 270 ms 294012 KB Output is correct
10 Correct 267 ms 293896 KB Output is correct
11 Correct 277 ms 294008 KB Output is correct
12 Correct 267 ms 293880 KB Output is correct
13 Correct 266 ms 293880 KB Output is correct
14 Correct 321 ms 293880 KB Output is correct
15 Correct 273 ms 293880 KB Output is correct
16 Correct 267 ms 293880 KB Output is correct
17 Correct 268 ms 294264 KB Output is correct
18 Correct 270 ms 294280 KB Output is correct
19 Correct 271 ms 294348 KB Output is correct
20 Correct 271 ms 294168 KB Output is correct
21 Correct 273 ms 294136 KB Output is correct
22 Correct 271 ms 294108 KB Output is correct
23 Correct 273 ms 294220 KB Output is correct
24 Correct 268 ms 293996 KB Output is correct
25 Correct 282 ms 296880 KB Output is correct
26 Correct 314 ms 296872 KB Output is correct
27 Correct 322 ms 296956 KB Output is correct
28 Correct 325 ms 295160 KB Output is correct
29 Correct 342 ms 295800 KB Output is correct
30 Correct 324 ms 295900 KB Output is correct
31 Correct 294 ms 295820 KB Output is correct
32 Correct 284 ms 295832 KB Output is correct
33 Correct 382 ms 316352 KB Output is correct
34 Correct 371 ms 311496 KB Output is correct
35 Correct 333 ms 311416 KB Output is correct
36 Correct 377 ms 306680 KB Output is correct
37 Correct 570 ms 331768 KB Output is correct
38 Correct 489 ms 331568 KB Output is correct
39 Correct 515 ms 332044 KB Output is correct
40 Correct 623 ms 329600 KB Output is correct
41 Correct 367 ms 306340 KB Output is correct
42 Correct 380 ms 308856 KB Output is correct
43 Correct 459 ms 317528 KB Output is correct
44 Correct 503 ms 319608 KB Output is correct
45 Correct 394 ms 306660 KB Output is correct
46 Correct 366 ms 306696 KB Output is correct
47 Correct 456 ms 317192 KB Output is correct
48 Correct 542 ms 318324 KB Output is correct
49 Correct 275 ms 294404 KB Output is correct
50 Correct 293 ms 294264 KB Output is correct
51 Correct 273 ms 294104 KB Output is correct
52 Correct 266 ms 293852 KB Output is correct
53 Correct 303 ms 294184 KB Output is correct
54 Correct 277 ms 294216 KB Output is correct
55 Correct 288 ms 294136 KB Output is correct
56 Correct 270 ms 294224 KB Output is correct
57 Correct 267 ms 294196 KB Output is correct
58 Correct 267 ms 293936 KB Output is correct
59 Correct 268 ms 294012 KB Output is correct
60 Correct 266 ms 293852 KB Output is correct
61 Correct 858 ms 366776 KB Output is correct
62 Correct 1668 ms 446056 KB Output is correct
63 Correct 1792 ms 446696 KB Output is correct
64 Correct 1739 ms 446812 KB Output is correct
65 Correct 428 ms 324060 KB Output is correct
66 Correct 657 ms 346016 KB Output is correct
67 Correct 640 ms 349020 KB Output is correct
68 Correct 1937 ms 538972 KB Output is correct
69 Correct 1912 ms 471900 KB Output is correct
70 Correct 1289 ms 471928 KB Output is correct
71 Correct 1067 ms 404968 KB Output is correct
72 Correct 4376 ms 734356 KB Output is correct
73 Correct 1948 ms 467612 KB Output is correct
74 Correct 2183 ms 472148 KB Output is correct
75 Correct 3361 ms 574204 KB Output is correct
76 Correct 2105 ms 463292 KB Output is correct
77 Correct 2880 ms 520056 KB Output is correct
78 Correct 3440 ms 576592 KB Output is correct
79 Correct 1885 ms 452544 KB Output is correct
80 Correct 3236 ms 562364 KB Output is correct
81 Correct 3259 ms 551900 KB Output is correct
82 Correct 2525 ms 558208 KB Output is correct
83 Correct 4201 ms 734144 KB Output is correct
84 Correct 4415 ms 734356 KB Output is correct
85 Correct 4539 ms 736340 KB Output is correct
86 Correct 270 ms 293952 KB Output is correct
87 Correct 267 ms 293880 KB Output is correct
88 Correct 269 ms 293880 KB Output is correct
89 Correct 270 ms 293820 KB Output is correct
90 Correct 266 ms 293972 KB Output is correct