/in/foo.cc: In function 'int main()':
/in/foo.cc:17:6: error: 'i' was not declared in this scope
  for(i = 0; i < n+1; i++)
      ^
/in/foo.cc:22:6: error: 'i' was not declared in this scope
  for(i = 1; i < m+1; i++)
      ^
/in/foo.cc:32:6: error: 'i' was not declared in this scope
  for(i = 0; i < n+1; i++)
      ^
/in/foo.cc:36:6: error: 'i' was not declared in this scope
  for(i = 1; i < n+1; i++)
      ^
/in/foo.cc:45:7: error: 'j' was not declared in this scope
   i = j;
       ^
/in/foo.cc:47:6: error: 'i' was not declared in this scope
  for(i = 0; i < n+1; i++)
      ^