1 static int wing=[]() 2 { 3     std::ios::sync_with_stdio(false); 4     cin.tie(NULL); 5     return 0; 6 }(); 7  8 class Solution  9 {10 public:11     int maxAreaOfIsland(vector
     
      
       >& grid) 12     {13         int x=grid.size();14         int y=grid[0].size();15         int res=0;16         for(int i=0;i
       

> &grid,int i,int j)27 {28 int szx=grid.size();29 int szy=grid[0].size();30 int count=0;31 if(grid[i][j]==1)32 {33 count++;34 grid[i][j]=0;35 if(valid(i-1,j,szx,szy)) count+=countarea(grid,i-1,j);36 if(valid(i,j-1,szx,szy)) count+=countarea(grid,i,j-1);37 if(valid(i+1,j,szx,szy)) count+=countarea(grid,i+1,j);38 if(valid(i,j+1,szx,szy)) count+=countarea(grid,i,j+1);39 return count;40 } 41 return 0; 42 }43 44 bool valid(int i,int j,int szx,int szy)45 {46 return i>=0&&i

=0&&j<=szy;47 }48 49 };