View Compilation Error

0_0_18175422_8940.cpp: In function 'int main()':
0_0_18175422_8940.cpp:53:16: error: 'g' was not declared in this scope
         memset(g,0,sizeof(g));
                ^
0_0_18175422_8940.cpp:58:19: error: 'x' was not declared in this scope
                 g[x][y]=1;
                   ^
0_0_18175422_8940.cpp:58:22: error: 'y' was not declared in this scope
                 g[x][y]=1;
                      ^
0_0_18175422_8940.cpp:63:33: error: 'hungry' was not declared in this scope
         printf("%d\n",ve-hungry());
                                 ^