View Compilation Error

0_0_39109139_15769.cpp: In function 'int main()':
0_0_39109139_15769.cpp:36:47: error: 'l' was not declared in this scope
   36 |                                         if(v1[l]<v1[r])
      |                                               ^
0_0_39109139_15769.cpp:36:53: error: 'r' was not declared in this scope
   36 |                                         if(v1[l]<v1[r])
      |                                                     ^
0_0_39109139_15769.cpp:38:41: error: 'l' was not declared in this scope
   38 |                                         l++,r++;
      |                                         ^
0_0_39109139_15769.cpp:38:45: error: 'r' was not declared in this scope
   38 |                                         l++,r++;
      |                                             ^