oj.uz

Submission #152086

# Submission time Handle Problem Language Result Execution time Memory
152086 2019-09-06T10:34:00 Z oolimry Rectangles (IOI19_rect) C++14
27 / 100
 5000 ms 54748 KB 
#include <bits/stdc++.h>
 
using namespace std;
 /*
class Segment{
public:
	vector<int> tree;
	int n;
	
	void create(int nn){
		n = nn;
		for(int i = 0;i < 2 * n + 5;i++){
			tree.push_back(-1);
		}
	}
	
	void update(int i, int x){
		i += n;
		while(i > 0){
			tree[i] = max(tree[i],x);
			i >>= 1;
		}
	}
	
	int query(int l, int r){
		int ans = -1;
		for(l += n,r += n;l < r;l >>= 1, r >>= 1){
			if(l&1){
				ans = max(ans,tree[l]);
				l++;
			}
			if(r&1){
				r--;
				ans = max(ans,tree[r]);
			}
		}
		return ans;
	}
};
*/
static int tree[1405][1405];
static int a[700][700];
inline void update(int t, int i, int x){
	i += 700;
	while(i > 0){
		tree[t][i] = max(tree[t][i],x);
		i >>= 1;
	}
}

inline int query(int t, int l, int r){
	int ans = -1;
	for(l += 700,r += 700;l < r;l >>= 1, r >>= 1){
		if(l&1){
			ans = max(ans,tree[t][l]);
			l++;
		}
		if(r&1){
			r--;
			ans = max(ans,tree[t][r]);
		}
	}
	return ans;
}
 
 
long long count_rectangles(std::vector<std::vector<int> > b) {
	int rows = b.size();
	int cols = b[0].size();
	for(int r = 0;r < rows;r++){
		for(int c = 0;c < cols;c++){
			a[r][c] = b[r][c];
		}
	}
	//Segment hori[rows];
	//Segment vert[cols];
 
	set<long long> answers;
	for(int c = 0;c < cols;c++){
		//vert[c].create(rows);
	}
	for(int r = 0;r < rows;r++){
		//hori[r].create(cols);
 
	}
	for(int r = 0;r < rows;r++){
		for(int c = 0;c < cols;c++){
			//hori[r].update(c,a[r][c]);
			//vert[c].update(r,a[r][c]);
			update(r,c,a[r][c]);
			update(rows+c,r,a[r][c]);
		}
	}
	typedef pair<int,int> ii;
	typedef pair<int,ii> iii;
	
	vector<iii> points;
	for(int r = 0;r < rows;r++){
		for(int c = 0;c < cols;c++){
			points.push_back(iii(a[r][c],ii(r,c)));
		}
	}
	
	sort(points.begin(),points.end());
	stack<ii> arr;
	for(int p = 0;p < points.size();p++){
		int rr = points[p].second.first;
		int cc = points[p].second.second;
		//cout << rr << " " << cc << " " << a[rr][cc] << "\n";
		arr.push(ii(rr,cc));
		if(p == points.size()-1 || points[p].first != points[p+1].first){
			while(!arr.empty()){
				int r = arr.top().first;
				int c = arr.top().second;
				arr.pop();
				if(r == 0 || r == rows - 1 || c == 0 || c == cols-1) continue;
				
				//if(hhh[r].query(c) != 0) continue;
				
				int lr = r, hr = r, lc = c, hc = c; //exclusive
				
				while(lr > 0){
					if(a[lr][c] > a[r][c]) break;
					lr--;
				}
				
				while(hr < rows-1){
					if(a[hr][c] > a[r][c]) break;
					hr++;
				}
				
				while(lc > 0){
					if(a[r][lc] > a[r][c]) break;
					lc--;
				}
				
				while(hc < cols-1){
					if(a[r][hc] > a[r][c]) break;
					hc++;
				}
				
				bool can = true;
				for(int sr = lr+1;sr < hr;sr++){
					int value = query(sr,lc+1,hc);
					if(value >= a[sr][lc] || value >= a[sr][hc]){
						can = false;
						break;
					}
				}
				for(int sc = lc+1;sc < hc;sc++){
					int value = query(sc+rows,lr+1,hr);
					if(value >= a[lr][sc] || value >= a[hr][sc]){
						can = false;
						break;
					}
				}
				
				if(can){
					
					long long vvv = lr * 1000000000ll;
					vvv += hr * 1000000ll;
					vvv += lc * 1000ll;
					vvv += hc;
					answers.insert(vvv);
				}
				
				//cout << r << " " << c << " " << lr << " " << hr << " " << lc << " " << hc << "\n";
			}
			
		}
	}
	return answers.size();
}

Compilation message

rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:106:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int p = 0;p < points.size();p++){
                ~~^~~~~~~~~~~~~~~
rect.cpp:111:8: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(p == points.size()-1 || points[p].first != points[p+1].first){
      ~~^~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 3 ms 760 KB Output is correct
4 Correct 3 ms 764 KB Output is correct
5 Correct 3 ms 760 KB Output is correct
6 Correct 3 ms 760 KB Output is correct
7 Correct 2 ms 632 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 3 ms 760 KB Output is correct
10 Correct 3 ms 760 KB Output is correct
11 Correct 3 ms 760 KB Output is correct
12 Correct 3 ms 760 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 3 ms 760 KB Output is correct
20 Correct 2 ms 632 KB Output is correct
21 Correct 2 ms 376 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 3 ms 760 KB Output is correct
4 Correct 3 ms 764 KB Output is correct
5 Correct 3 ms 760 KB Output is correct
6 Correct 3 ms 760 KB Output is correct
7 Correct 2 ms 632 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 3 ms 760 KB Output is correct
10 Correct 3 ms 760 KB Output is correct
11 Correct 3 ms 760 KB Output is correct
12 Correct 3 ms 760 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 13 ms 1784 KB Output is correct
18 Correct 14 ms 1784 KB Output is correct
19 Correct 13 ms 1784 KB Output is correct
20 Correct 5 ms 1656 KB Output is correct
21 Correct 5 ms 1656 KB Output is correct
22 Correct 6 ms 1660 KB Output is correct
23 Correct 6 ms 1656 KB Output is correct
24 Correct 4 ms 1272 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 376 KB Output is correct
27 Correct 3 ms 760 KB Output is correct
28 Correct 2 ms 632 KB Output is correct
29 Correct 2 ms 376 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 3 ms 760 KB Output is correct
4 Correct 3 ms 764 KB Output is correct
5 Correct 3 ms 760 KB Output is correct
6 Correct 3 ms 760 KB Output is correct
7 Correct 2 ms 632 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 3 ms 760 KB Output is correct
10 Correct 3 ms 760 KB Output is correct
11 Correct 3 ms 760 KB Output is correct
12 Correct 3 ms 760 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 13 ms 1784 KB Output is correct
18 Correct 14 ms 1784 KB Output is correct
19 Correct 13 ms 1784 KB Output is correct
20 Correct 5 ms 1656 KB Output is correct
21 Correct 5 ms 1656 KB Output is correct
22 Correct 6 ms 1660 KB Output is correct
23 Correct 6 ms 1656 KB Output is correct
24 Correct 4 ms 1272 KB Output is correct
25 Correct 197 ms 5664 KB Output is correct
26 Correct 214 ms 5636 KB Output is correct
27 Correct 199 ms 5736 KB Output is correct
28 Correct 23 ms 4340 KB Output is correct
29 Correct 24 ms 4464 KB Output is correct
30 Correct 23 ms 4464 KB Output is correct
31 Correct 29 ms 4464 KB Output is correct
32 Correct 27 ms 4464 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 2 ms 376 KB Output is correct
35 Correct 3 ms 760 KB Output is correct
36 Correct 2 ms 632 KB Output is correct
37 Correct 2 ms 376 KB Output is correct

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 3 ms 760 KB Output is correct
4 Correct 3 ms 764 KB Output is correct
5 Correct 3 ms 760 KB Output is correct
6 Correct 3 ms 760 KB Output is correct
7 Correct 2 ms 632 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 3 ms 760 KB Output is correct
10 Correct 3 ms 760 KB Output is correct
11 Correct 3 ms 760 KB Output is correct
12 Correct 3 ms 760 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 13 ms 1784 KB Output is correct
18 Correct 14 ms 1784 KB Output is correct
19 Correct 13 ms 1784 KB Output is correct
20 Correct 5 ms 1656 KB Output is correct
21 Correct 5 ms 1656 KB Output is correct
22 Correct 6 ms 1660 KB Output is correct
23 Correct 6 ms 1656 KB Output is correct
24 Correct 4 ms 1272 KB Output is correct
25 Correct 197 ms 5664 KB Output is correct
26 Correct 214 ms 5636 KB Output is correct
27 Correct 199 ms 5736 KB Output is correct
28 Correct 23 ms 4340 KB Output is correct
29 Correct 24 ms 4464 KB Output is correct
30 Correct 23 ms 4464 KB Output is correct
31 Correct 29 ms 4464 KB Output is correct
32 Correct 27 ms 4464 KB Output is correct
33 Correct 512 ms 20068 KB Output is correct
34 Correct 517 ms 20192 KB Output is correct
35 Correct 534 ms 20196 KB Output is correct
36 Correct 540 ms 20192 KB Output is correct
37 Execution timed out 5084 ms 32028 KB Time limit exceeded
38 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Runtime error 23 ms 16248 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Runtime error 88 ms 54748 KB Execution killed with signal 11 (could be triggered by violating memory limits)
3 Halted 0 ms 0 KB -

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 3 ms 760 KB Output is correct
3 Correct 3 ms 760 KB Output is correct
4 Correct 3 ms 764 KB Output is correct
5 Correct 3 ms 760 KB Output is correct
6 Correct 3 ms 760 KB Output is correct
7 Correct 2 ms 632 KB Output is correct
8 Correct 2 ms 632 KB Output is correct
9 Correct 3 ms 760 KB Output is correct
10 Correct 3 ms 760 KB Output is correct
11 Correct 3 ms 760 KB Output is correct
12 Correct 3 ms 760 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 13 ms 1784 KB Output is correct
18 Correct 14 ms 1784 KB Output is correct
19 Correct 13 ms 1784 KB Output is correct
20 Correct 5 ms 1656 KB Output is correct
21 Correct 5 ms 1656 KB Output is correct
22 Correct 6 ms 1660 KB Output is correct
23 Correct 6 ms 1656 KB Output is correct
24 Correct 4 ms 1272 KB Output is correct
25 Correct 197 ms 5664 KB Output is correct
26 Correct 214 ms 5636 KB Output is correct
27 Correct 199 ms 5736 KB Output is correct
28 Correct 23 ms 4340 KB Output is correct
29 Correct 24 ms 4464 KB Output is correct
30 Correct 23 ms 4464 KB Output is correct
31 Correct 29 ms 4464 KB Output is correct
32 Correct 27 ms 4464 KB Output is correct
33 Correct 512 ms 20068 KB Output is correct
34 Correct 517 ms 20192 KB Output is correct
35 Correct 534 ms 20196 KB Output is correct
36 Correct 540 ms 20192 KB Output is correct
37 Execution timed out 5084 ms 32028 KB Time limit exceeded
38 Halted 0 ms 0 KB -