View Compilation Error

0_0_39381998_26105.cpp: In function 'void solve(int)':
0_0_39381998_26105.cpp:47:12: error: 'l' was not declared in this scope
   47 |         if(l==-1||r==-1){
      |            ^
0_0_39381998_26105.cpp:47:19: error: 'r' was not declared in this scope
   47 |         if(l==-1||r==-1){
      |                   ^