oj.uz

Submission #169802

# Submission time Handle Problem Language Result Execution time Memory
169802 2019-12-22T22:57:50 Z arthur_nascimento Rectangles (IOI19_rect) C++14
37 / 100
 5000 ms 1048576 KB 
#include "rect.h"
#include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define debug 
#define ll long long
#define maxn 2525


int lg[maxn];

struct rmq {
	
	int len;
	int arr[maxn];
	int mx[13][maxn];
	int id[13][maxn];
	
	void build(){
		lg[1] = 0;
		for(int i=2;i<=len;i++)
			lg[i] = lg[i-1] + (i == (i&-i));
	
		for(int i=0;i<len;i++){
			mx[0][i] = arr[i];
			id[0][i] = i;
		}
		for(int i=1;i<13;i++)
			for(int j=0;j<len;j++){
				int ot = min(len-1, j + ( 1 << (i-1)));
				int A = mx[i-1][j], B = mx[i-1][ot];
				if(A > B){
					mx[i][j] = A;
					id[i][j] = id[i-1][j];
				}
				else {
					mx[i][j] = B;
					id[i][j] = id[i-1][ot];
				}
			}
	}
	
	int pos(int x,int y){
		int l = lg[y-x+1];
		int A = mx[l][x], B = mx[l][y-(1<<l)+1];
		if(A > B) return id[l][x];
		else return id[l][y-(1<<l)+1];
	}
	int val(int x,int y){
		int l = lg[y-x+1];
		int A = mx[l][x], B = mx[l][y-(1<<l)+1];
		return max(A,B);
	}

}

RMQ[2][maxn];


int M[maxn][maxn];

int n,m;

int line(int i,int yi,int yf){
	int r = 1;
	for(int j=yi;j<=yf;j++)
		if(M[i][j] >= M[i][yi-1] || M[i][j] >= M[i][yf+1]) r = 0;
	return r;
}

int column(int j,int xi,int xf){
	int r = 1;
	for(int i=xi;i<=xf;i++)
		if(M[i][j] >= M[xi-1][j] || M[i][j] >= M[xf+1][j]) r = 0;
	return r;
}

int check(int xi,int xf,int yi,int yf){
	int r = 1;
	assert(xi >= 1 && xf <= n-2 && yi >= 1 && yf <= m-2);
	for(int i=xi;i<=xf;i++)
		r *= line(i,yi,yf);
	for(int j=yi;j<=yf;j++)
		r *= column(j,xi,xf);
	if(r)
		debug("achou x:%d~%d y: %d~%d\n",xi,xf,yi,yf);
	return r;
} 

ll go4(int xi,int xf,int yi,int yf,int ym){

	if(xi > xf || yi > yf) return 0;
	if(yi > ym || yf < ym) return 0;
	debug("oi4\n");
	ll ans = check(xi,xf,yi,yf);
	
	int mx = -1, id = -1;
	
	for(int i=yi;i<=yf;i++)
		if(M[xi][i] > mx){
			mx = M[xi][i];
			id = i;
		}
		
	ans += go4(xi,xf,yi,id-1,ym) + go4(xi,xf,id+1,yf,ym);
	debug("tchau 4\n");
	return ans;

}

ll go3(int xi,int xf,int yi,int yf,int ym){

	if(xi == 0 || xf == n-1) return 0;
	if(xi > xf) return 0;
	
	int A = ym, B = ym;
	
	debug("oi x: %d~%d y: %d~%d quebra A ? B ?\n",xi,xf,yi,yf);

	
	while(1){
		A--;
		if(A == 0 || A < yi) break;
		debug("A %d\n",A);
		int ok = 1;
		//for(int i=xi;i<=xf;i++)
		//	if(M[i][A] >= M[xi-1][A] || M[i][A] >= M[xf+1][A]) ok = 0;
		if(RMQ[1][A].val(xi,xf) >= min(M[xi-1][A],M[xf+1][A])) ok = 0;
		if(ok == 0) break;
	}
	A++;
	
	while(1){
		B++;
		if(B == m-1 || B > yf) break;
		int ok = 1;
		for(int i=xi;i<=xf;i++)
			if(M[i][B] >= M[xi-1][B] || M[i][B] >= M[xf+1][B]) ok = 0;
	}
	B--;
	
	debug("go3 x: %d~%d y: %d~%d quebra A %d B %d\n",xi,xf,yi,yf,A,B);
	
	return go4(xi,xf,A,B,ym);

}

ll go2(int xi,int xf,int yi,int yf,int ym){
	
	if(xi > xf) return 0;
	if(yi > yf) return 0;
	if(ym == 0 || ym == m-1) return 0;
	debug("go2 x %d~%d y %d~%d\n",xi,xf,yi,yf);
	
	int mx = -1, id = -1;
	
	/*for(int i=xi;i<=xf;i++)
		if(M[i][ym] > mx){
			mx = M[i][ym];
			id = i;
		}*/
	
	
	id = RMQ[1][ym].pos(xi,xf);
	
		
	ll ans = go3(xi,id-1,yi,yf,ym) + go3(id+1,xf,yi,yf,ym) + go2(xi,id-1,yi,yf,ym) + go2(id+1,xf,yi,yf,ym);
	
	return ans;

}

ll go(int yi,int yf){

	if(yi > yf) return 0;
	
	int ym = (yi+yf)/2;
	debug("oi\n");
	
	ll ans = go(yi,ym-1) + go(ym+1,yf) + go2(0,n-1,yi,yf,ym);
	
	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++)
		for(int j=0;j<m;j++)
			M[i][j] = a[i][j];
			
	for(int i=0;i<n;i++){
		
		RMQ[0][i].len = m;
		
		for(int j=0;j<m;j++)
			RMQ[0][i].arr[j] = M[i][j];
			
		RMQ[0][i].build();
	
	}	
	
	for(int j=0;j<m;j++){
	
		RMQ[1][j].len = n;
		for(int i=0;i<n;i++)
			RMQ[1][j].arr[i] = M[i][j];
			
		RMQ[1][j].build();
	
	}	
	
	return go(0,m-1);
	
}

Compilation message

rect.cpp: In function 'int check(int, int, int, int)':
rect.cpp:86:36: warning: left operand of comma operator has no effect [-Wunused-value]
   debug("achou x:%d~%d y: %d~%d\n",xi,xf,yi,yf);
                                    ^~
rect.cpp:86:39: warning: right operand of comma operator has no effect [-Wunused-value]
   debug("achou x:%d~%d y: %d~%d\n",xi,xf,yi,yf);
                                       ^~
rect.cpp:86:42: warning: right operand of comma operator has no effect [-Wunused-value]
   debug("achou x:%d~%d y: %d~%d\n",xi,xf,yi,yf);
                                          ^~
rect.cpp:86:45: warning: right operand of comma operator has no effect [-Wunused-value]
   debug("achou x:%d~%d y: %d~%d\n",xi,xf,yi,yf);
                                             ^~
rect.cpp: In function 'long long int go4(int, int, int, int, int)':
rect.cpp:94:16: warning: statement has no effect [-Wunused-value]
  debug("oi4\n");
                ^
rect.cpp:106:20: warning: statement has no effect [-Wunused-value]
  debug("tchau 4\n");
                    ^
rect.cpp: In function 'long long int go3(int, int, int, int, int)':
rect.cpp:118:48: warning: left operand of comma operator has no effect [-Wunused-value]
  debug("oi x: %d~%d y: %d~%d quebra A ? B ?\n",xi,xf,yi,yf);
                                                ^~
rect.cpp:118:51: warning: right operand of comma operator has no effect [-Wunused-value]
  debug("oi x: %d~%d y: %d~%d quebra A ? B ?\n",xi,xf,yi,yf);
                                                   ^~
rect.cpp:118:54: warning: right operand of comma operator has no effect [-Wunused-value]
  debug("oi x: %d~%d y: %d~%d quebra A ? B ?\n",xi,xf,yi,yf);
                                                      ^~
rect.cpp:118:57: warning: right operand of comma operator has no effect [-Wunused-value]
  debug("oi x: %d~%d y: %d~%d quebra A ? B ?\n",xi,xf,yi,yf);
                                                         ^~
rect.cpp:124:18: warning: left operand of comma operator has no effect [-Wunused-value]
   debug("A %d\n",A);
                  ^
rect.cpp:136:7: warning: variable 'ok' set but not used [-Wunused-but-set-variable]
   int ok = 1;
       ^~
rect.cpp:142:51: warning: left operand of comma operator has no effect [-Wunused-value]
  debug("go3 x: %d~%d y: %d~%d quebra A %d B %d\n",xi,xf,yi,yf,A,B);
                                                   ^~
rect.cpp:142:54: warning: right operand of comma operator has no effect [-Wunused-value]
  debug("go3 x: %d~%d y: %d~%d quebra A %d B %d\n",xi,xf,yi,yf,A,B);
                                                      ^~
rect.cpp:142:57: warning: right operand of comma operator has no effect [-Wunused-value]
  debug("go3 x: %d~%d y: %d~%d quebra A %d B %d\n",xi,xf,yi,yf,A,B);
                                                         ^~
rect.cpp:142:60: warning: right operand of comma operator has no effect [-Wunused-value]
  debug("go3 x: %d~%d y: %d~%d quebra A %d B %d\n",xi,xf,yi,yf,A,B);
                                                            ^~
rect.cpp:142:63: warning: right operand of comma operator has no effect [-Wunused-value]
  debug("go3 x: %d~%d y: %d~%d quebra A %d B %d\n",xi,xf,yi,yf,A,B);
                                                               ^
rect.cpp:142:65: warning: right operand of comma operator has no effect [-Wunused-value]
  debug("go3 x: %d~%d y: %d~%d quebra A %d B %d\n",xi,xf,yi,yf,A,B);
                                                                 ^
rect.cpp: In function 'long long int go2(int, int, int, int, int)':
rect.cpp:153:32: warning: left operand of comma operator has no effect [-Wunused-value]
  debug("go2 x %d~%d y %d~%d\n",xi,xf,yi,yf);
                                ^~
rect.cpp:153:35: warning: right operand of comma operator has no effect [-Wunused-value]
  debug("go2 x %d~%d y %d~%d\n",xi,xf,yi,yf);
                                   ^~
rect.cpp:153:38: warning: right operand of comma operator has no effect [-Wunused-value]
  debug("go2 x %d~%d y %d~%d\n",xi,xf,yi,yf);
                                      ^~
rect.cpp:153:41: warning: right operand of comma operator has no effect [-Wunused-value]
  debug("go2 x %d~%d y %d~%d\n",xi,xf,yi,yf);
                                         ^~
rect.cpp:155:6: warning: unused variable 'mx' [-Wunused-variable]
  int mx = -1, id = -1;
      ^~
rect.cpp: In function 'long long int go(int, int)':
rect.cpp:178:15: warning: statement has no effect [-Wunused-value]
  debug("oi\n");
               ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 7 ms 7160 KB Output is correct
3 Correct 9 ms 7160 KB Output is correct
4 Correct 8 ms 7160 KB Output is correct
5 Correct 7 ms 7160 KB Output is correct
6 Correct 7 ms 7160 KB Output is correct
7 Correct 6 ms 5240 KB Output is correct
8 Correct 6 ms 4984 KB Output is correct
9 Correct 9 ms 7164 KB Output is correct
10 Correct 7 ms 7160 KB Output is correct
11 Correct 7 ms 7160 KB Output is correct
12 Correct 7 ms 7160 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 1656 KB Output is correct
15 Correct 3 ms 2424 KB Output is correct
16 Correct 2 ms 1016 KB Output is correct
17 Correct 2 ms 632 KB Output is correct
18 Correct 2 ms 1016 KB Output is correct
19 Correct 7 ms 7188 KB Output is correct
20 Correct 6 ms 5368 KB Output is correct
21 Correct 3 ms 1656 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 7 ms 7160 KB Output is correct
3 Correct 9 ms 7160 KB Output is correct
4 Correct 8 ms 7160 KB Output is correct
5 Correct 7 ms 7160 KB Output is correct
6 Correct 7 ms 7160 KB Output is correct
7 Correct 6 ms 5240 KB Output is correct
8 Correct 6 ms 4984 KB Output is correct
9 Correct 9 ms 7164 KB Output is correct
10 Correct 7 ms 7160 KB Output is correct
11 Correct 7 ms 7160 KB Output is correct
12 Correct 7 ms 7160 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 1656 KB Output is correct
15 Correct 3 ms 2424 KB Output is correct
16 Correct 2 ms 1016 KB Output is correct
17 Correct 45 ms 19544 KB Output is correct
18 Correct 45 ms 19448 KB Output is correct
19 Correct 45 ms 19516 KB Output is correct
20 Correct 17 ms 19452 KB Output is correct
21 Correct 19 ms 19320 KB Output is correct
22 Correct 20 ms 19320 KB Output is correct
23 Correct 19 ms 19448 KB Output is correct
24 Correct 13 ms 14460 KB Output is correct
25 Correct 2 ms 632 KB Output is correct
26 Correct 2 ms 1016 KB Output is correct
27 Correct 7 ms 7188 KB Output is correct
28 Correct 6 ms 5368 KB Output is correct
29 Correct 3 ms 1656 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 7 ms 7160 KB Output is correct
3 Correct 9 ms 7160 KB Output is correct
4 Correct 8 ms 7160 KB Output is correct
5 Correct 7 ms 7160 KB Output is correct
6 Correct 7 ms 7160 KB Output is correct
7 Correct 6 ms 5240 KB Output is correct
8 Correct 6 ms 4984 KB Output is correct
9 Correct 9 ms 7164 KB Output is correct
10 Correct 7 ms 7160 KB Output is correct
11 Correct 7 ms 7160 KB Output is correct
12 Correct 7 ms 7160 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 1656 KB Output is correct
15 Correct 3 ms 2424 KB Output is correct
16 Correct 2 ms 1016 KB Output is correct
17 Correct 45 ms 19544 KB Output is correct
18 Correct 45 ms 19448 KB Output is correct
19 Correct 45 ms 19516 KB Output is correct
20 Correct 17 ms 19452 KB Output is correct
21 Correct 19 ms 19320 KB Output is correct
22 Correct 20 ms 19320 KB Output is correct
23 Correct 19 ms 19448 KB Output is correct
24 Correct 13 ms 14460 KB Output is correct
25 Correct 1197 ms 53712 KB Output is correct
26 Correct 1204 ms 53752 KB Output is correct
27 Correct 1201 ms 53852 KB Output is correct
28 Correct 52 ms 53548 KB Output is correct
29 Correct 65 ms 53624 KB Output is correct
30 Correct 65 ms 53752 KB Output is correct
31 Correct 66 ms 53752 KB Output is correct
32 Correct 66 ms 53368 KB Output is correct
33 Correct 2 ms 632 KB Output is correct
34 Correct 2 ms 1016 KB Output is correct
35 Correct 7 ms 7188 KB Output is correct
36 Correct 6 ms 5368 KB Output is correct
37 Correct 3 ms 1656 KB Output is correct

Subtask #4
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 7 ms 7160 KB Output is correct
3 Correct 9 ms 7160 KB Output is correct
4 Correct 8 ms 7160 KB Output is correct
5 Correct 7 ms 7160 KB Output is correct
6 Correct 7 ms 7160 KB Output is correct
7 Correct 6 ms 5240 KB Output is correct
8 Correct 6 ms 4984 KB Output is correct
9 Correct 9 ms 7164 KB Output is correct
10 Correct 7 ms 7160 KB Output is correct
11 Correct 7 ms 7160 KB Output is correct
12 Correct 7 ms 7160 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 1656 KB Output is correct
15 Correct 3 ms 2424 KB Output is correct
16 Correct 2 ms 1016 KB Output is correct
17 Correct 45 ms 19544 KB Output is correct
18 Correct 45 ms 19448 KB Output is correct
19 Correct 45 ms 19516 KB Output is correct
20 Correct 17 ms 19452 KB Output is correct
21 Correct 19 ms 19320 KB Output is correct
22 Correct 20 ms 19320 KB Output is correct
23 Correct 19 ms 19448 KB Output is correct
24 Correct 13 ms 14460 KB Output is correct
25 Correct 1197 ms 53712 KB Output is correct
26 Correct 1204 ms 53752 KB Output is correct
27 Correct 1201 ms 53852 KB Output is correct
28 Correct 52 ms 53548 KB Output is correct
29 Correct 65 ms 53624 KB Output is correct
30 Correct 65 ms 53752 KB Output is correct
31 Correct 66 ms 53752 KB Output is correct
32 Correct 66 ms 53368 KB Output is correct
33 Execution timed out 5124 ms 267348 KB Time limit exceeded
34 Halted 0 ms 0 KB -

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 229 ms 273260 KB Output is correct
2 Correct 188 ms 232184 KB Output is correct
3 Correct 212 ms 273180 KB Output is correct
4 Correct 2 ms 760 KB Output is correct
5 Correct 208 ms 273244 KB Output is correct
6 Correct 210 ms 273272 KB Output is correct
7 Correct 208 ms 273304 KB Output is correct
8 Correct 206 ms 273272 KB Output is correct
9 Correct 207 ms 273312 KB Output is correct
10 Correct 205 ms 271948 KB Output is correct
11 Correct 218 ms 272576 KB Output is correct

Subtask #6
0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2552 KB Output is correct
2 Correct 1381 ms 921524 KB Output is correct
3 Runtime error 1201 ms 1048576 KB Execution killed with signal 9 (could be triggered by violating memory limits)
4 Halted 0 ms 0 KB -

Subtask #7
0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1528 KB Output is correct
2 Correct 7 ms 7160 KB Output is correct
3 Correct 9 ms 7160 KB Output is correct
4 Correct 8 ms 7160 KB Output is correct
5 Correct 7 ms 7160 KB Output is correct
6 Correct 7 ms 7160 KB Output is correct
7 Correct 6 ms 5240 KB Output is correct
8 Correct 6 ms 4984 KB Output is correct
9 Correct 9 ms 7164 KB Output is correct
10 Correct 7 ms 7160 KB Output is correct
11 Correct 7 ms 7160 KB Output is correct
12 Correct 7 ms 7160 KB Output is correct
13 Correct 2 ms 632 KB Output is correct
14 Correct 3 ms 1656 KB Output is correct
15 Correct 3 ms 2424 KB Output is correct
16 Correct 2 ms 1016 KB Output is correct
17 Correct 45 ms 19544 KB Output is correct
18 Correct 45 ms 19448 KB Output is correct
19 Correct 45 ms 19516 KB Output is correct
20 Correct 17 ms 19452 KB Output is correct
21 Correct 19 ms 19320 KB Output is correct
22 Correct 20 ms 19320 KB Output is correct
23 Correct 19 ms 19448 KB Output is correct
24 Correct 13 ms 14460 KB Output is correct
25 Correct 1197 ms 53712 KB Output is correct
26 Correct 1204 ms 53752 KB Output is correct
27 Correct 1201 ms 53852 KB Output is correct
28 Correct 52 ms 53548 KB Output is correct
29 Correct 65 ms 53624 KB Output is correct
30 Correct 65 ms 53752 KB Output is correct
31 Correct 66 ms 53752 KB Output is correct
32 Correct 66 ms 53368 KB Output is correct
33 Execution timed out 5124 ms 267348 KB Time limit exceeded
34 Halted 0 ms 0 KB -