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  1. #pragma GCC optimize ("Ofast")
  2. #include<bits/stdc++.h>
  3. using namespace std;
  4. #define main dummy_main
  5. int main(){
  6.   return 0;
  7. }
  8. #undef main
  9. int X;
  10. int Y;
  11. int ok;
  12. int mp[100][100];
  13. void nul(int i, int j){
  14.   if(i < 0 || j < 0 || i >= X || j >= Y){
  15.     ok = 0;
  16.     return;
  17.   }
  18.   if(mp[i][j]==1 || mp[i][j]==2){
  19.     return;
  20.   }
  21.   mp[i][j] = 2;
  22.   nul(i, j - 1);
  23.   nul(i, j + 1);
  24.   nul(i - 1, j);
  25.   nul(i + 1, j);
  26. }
  27. class Solution{
  28.   public:
  29.   int closedIsland(vector<vector<int>>& grid){
  30.     int i;
  31.     int res = 0;
  32.     X = grid.size();
  33.     Y = grid[0].size();
  34.     for(i=(0);i<(X);i++){
  35.       int j;
  36.       for(j=(0);j<(Y);j++){
  37.         mp[i][j] = grid[i][j];
  38.       }
  39.     }
  40.     for(i=(0);i<(X);i++){
  41.       int j;
  42.       for(j=(0);j<(Y);j++){
  43.         if(mp[i][j]==0){
  44.           ok = 1;
  45.           nul(i,j);
  46.           res += ok;
  47.         }
  48.       }
  49.     }
  50.     return res;
  51.   }
  52. }
  53. ;
  54. // cLay varsion 20191108-1
  55.  
  56. // --- original code ---
  57. // #define main dummy_main
  58. // {}
  59. // #undef main
  60. // 
  61. // int X, Y, ok, mp[100][100];
  62. // 
  63. // void nul(int i, int j){
  64. //   if(i < 0 || j < 0 || i >= X || j >= Y) ok = 0, return;
  65. //   if(mp[i][j]==1 || mp[i][j]==2) return;
  66. //   mp[i][j] = 2;
  67. //   nul(i, j - 1);
  68. //   nul(i, j + 1);
  69. //   nul(i - 1, j);
  70. //   nul(i + 1, j);
  71. // }
  72. // 
  73. // class Solution {
  74. // public:
  75. //   int closedIsland(vector<vector<int>>& grid) {
  76. //     int res = 0;
  77. //     X = grid.size();
  78. //     Y = grid[0].size();
  79. //     rep(i,X) rep(j,Y) mp[i][j] = grid[i][j];
  80. //     rep(i,X) rep(j,Y) if(mp[i][j]==0){
  81. //       ok = 1;
  82. //       nul(i,j);
  83. //       res += ok;
  84. //     }
  85. //     return res;
  86. //   }
  87. // };
  88.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
/usr/bin/ld: /usr/lib/gcc/x86_64-linux-gnu/8/../../../x86_64-linux-gnu/Scrt1.o: in function `_start':
(.text+0x20): undefined reference to `main'
collect2: error: ld returned 1 exit status
stdout
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Standard output is empty
https://ideone.com/eglWKv
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
secret

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