View Compilation Error

0_0_14281903_14640.cpp: In function 'void init()':
0_0_14281903_14640.cpp:17:37: error: 'memset' was not declared in this scope
  memset(edgeHead,-1,sizeof(edgeHead));
                                     ^
0_0_14281903_14640.cpp: In function 'int main()':
0_0_14281903_14640.cpp:102:30: error: 'add' was not declared in this scope
             if(ok(i + 1, j)) add
                              ^
0_0_14281903_14640.cpp:102:30: error: expected '}' at end of input
0_0_14281903_14640.cpp:102:30: error: expected '}' at end of input
0_0_14281903_14640.cpp:102:30: error: expected '}' at end of input