View Compilation Error

0_0_36540539_19298.cpp: In function 'll query(int, int, int, int, int)':
0_0_36540539_19298.cpp:82:7: error: 'l' was not declared in this scope
  if(y<l||x>r||t[p].mx<a||t[p].mi>b)return 0;
       ^
0_0_36540539_19298.cpp:82:12: error: 'r' was not declared in this scope
  if(y<l||x>r||t[p].mx<a||t[p].mi>b)return 0;
            ^