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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. int N;
  4. int X=1025, Y=1025;
  5. int btree[1030][1030], matrix[1030][1030];
  6. int  mod (int a, int b) {
  7. 	int ans = a%b;
  8. 	if(ans < 0) 
  9. 		ans+=b;
  10. 	return ans;
  11. }
  12.  
  13. void update(int x, int y, int val) {
  14. 	while(x<=X) {
  15. 		int yy= y;
  16. 		while(yy <= Y) {
  17. 			btree[x][yy]+=val;
  18. 			yy+= yy & -yy;
  19. 		}
  20. 		x+= x & -x;
  21. 	}
  22. }
  23.  
  24. int query(int x, int y) {
  25. 	int res=0;
  26. 	while(x>0) {
  27. 		int yy =y;
  28. 		while(yy>0) {
  29. 			res+=btree[x][yy];
  30. 			yy-=yy& -yy;
  31. 		}
  32. 		x-=x& -x;
  33. 	}
  34. 	return res;
  35. }
  36.  
  37. map<char,int> mp;
  38. int main() {
  39. 	int n, m;
  40. 	cin >> n >> m;
  41. 	string s;
  42. 	mp['N']=0;
  43. 	mp['E']=1;
  44. 	mp['W']=2;
  45. 	mp['S'] = 3;
  46. 	char x;
  47. 	map<int, char> mp1;
  48. 	mp1[0]='N';
  49. 	mp1[1]='E';
  50. 	mp1[2]='W';
  51. 	mp1[3]='S';
  52. 	memset(btree,0,sizeof(btree));
  53. 	for(int i=1;i<=n;i++) {
  54. 		for(int j=1;j<=m;j++) {
  55. 			scanf("\n%c",&x);
  56. 			update(i,j,mp[x]);
  57. 			update(i+1,j,-mp[x]);
  58.                         update(i,j+1,-mp[x]);
  59.                         update(i+1,j+1,mp[x]);
  60.  
  61. 		}
  62. 	}
  63. 	int q;
  64. 	scanf("%d",&q);
  65. 	for(int i=0;i<q;i++) {
  66. 		char cmd;
  67. 		scanf("\n%c",&cmd);
  68. 		if(cmd=='C') {
  69. 			int x1,x2,y1,y2,d;
  70. 			scanf("%d %d %d %d %d",&x1,&y1,&x2,&y2,&d);
  71. 			int val;
  72. 			if(d==0) {
  73. 				val=1;
  74. 			}
  75. 			else 
  76. 				val=-1;
  77.  
  78. 			update(x1,y1,val);
  79. 			update(x2+1,y1,-val);
  80. 			update(x1,y2+1,-val);
  81. 			update(x2+1,y2+1,val);
  82. 		}
  83. 		else 
  84. 		{
  85. 			int x,y;
  86. 			scanf("%d %d",&x,&y);
  87. 			int res= query(x,y);
  88. 			printf("%c\n",mp1[mod(res,4)]);
  89. 		}
  90. 	}
  91. 	return 0;
  92. }
  93.  
  94.  
Success #stdin #stdout 0.01s 11760KB
comments (?)
stdin 
5 5
ESWNE
NWWWN
EEESE
SSWSN
SNWEN
5
C 2 1 4 1 1
D 3 1
D 3 3
C 2 1 5 2 0
D 3 1
stdout 
N
E
E
https://ideone.com/WDhjYD
language:
C++14 (gcc 8.3)
created:
8 years ago
visibility:
public

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