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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int              long long int
  4. #define double           long double
  5. inline int power(int a, int b) {
  6.     int x = 1;
  7.     while (b) {
  8.         if (b & 1) x *= a;
  9.         a *= a;
  10.         b >>= 1;
  11.     }
  12.     return x;
  13. }
  14.  
  15.  
  16. const int M = 1000000007;
  17. const int N = 3e5+9;
  18. const int INF = 2e9+1;
  19. const int LINF = 2000000000000000001;
  20.  
  21. //_ ***************************** START Below *******************************
  22.  
  23.  
  24.  
  25.  
  26. vector<vector<int>> queries;
  27. void  consistency(int n, int m) {
  28.  
  29.     vector<vector<int>> dif(n, vector<int>(n, 0));
  30.     for(auto& q : queries){
  31.         int x = q[0];
  32.         int y = q[1];
  33.         int a = q[2];
  34.         int b = q[3];
  35.         dif[x][y]++;
  36.         if(a+1<n) dif[a+1][y]--;
  37.         if(b+1<n) dif[x][b+1]--;
  38.         if(a+1<n && b+1<n) dif[a+1][b+1]++;
  39.     }
  40.     for(int i=0; i<n; i++){
  41.         for(int j=0; j<n; j++){
  42.             // dif[i][j] = 0 + dp[i-1][j] + dp[i][j-1] - dp[i-1][j-1];
  43.             if(i-1>=0)
  44.                 dif[i][j] += dif[i-1][j];
  45.             if(j-1>=0)
  46.                 dif[i][j] += dif[i][j-1];
  47.             if(i-1>=0 && j-1>=0) dif[i][j] -= dif[i-1][j-1];
  48.         }
  49.     }
  50.  
  51.     for(int i=0; i<n; i++){
  52.     	for(int j=0; j<n; j++){
  53.     		cout << dif[i][j] << " ";
  54.     	}cout << endl;
  55.     }
  56. }
  57.  
  58. void solve() {
  59.  
  60. 	int n, m;
  61. 	cin >> n >> m;
  62. 	queries.resize(m);
  63. 	for(int i=0; i<m; i++){
  64. 		int x,a, y,b;
  65. 		cin >> x >> a >> y >> b;
  66. 		queries[i] = {x,a,y,b};
  67. 	}
  68.  
  69. 	consistency(n, m);
  70.  
  71. }
  72.  
  73.  
  74.  
  75.  
  76.  
  77. int32_t main() {
  78.     ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
  79.  
  80.     int t = 1;
  81.     while (t--) {
  82.         solve();
  83.     }
  84.  
  85.     return 0;
  86. }
Success #stdin #stdout 0s 5316KB
comments (?)
stdin
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3 2
1 1 2 2
0 0 1 1
stdout
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1 1 0 
1 2 1 
0 1 1
https://ideone.com/cou7Ph
language:
C++14 (gcc 8.3)
created:
7 hours ago
visibility:
public

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