View Compilation Error

0_0_22428262_26094.cpp: In function 'int main()':
0_0_22428262_26094.cpp:73:6: error: 'ax' was not declared in this scope
      ax = i, ay = j;
      ^
0_0_22428262_26094.cpp:73:14: error: 'ay' was not declared in this scope
      ax = i, ay = j;
              ^
0_0_22428262_26094.cpp:82:11: error: 'ax' was not declared in this scope
   if(node[ax][ay].time==-1) 
           ^
0_0_22428262_26094.cpp:82:15: error: 'ay' was not declared in this scope
   if(node[ax][ay].time==-1) 
               ^