View Compilation Error

0_0_39624887_30403.cpp: In function 'int main()':
0_0_39624887_30403.cpp:61:16: error: 'l' was not declared in this scope
   61 |             if(l>r)swap(l,r);
      |                ^
0_0_39624887_30403.cpp:61:18: error: 'r' was not declared in this scope
   61 |             if(l>r)swap(l,r);
      |                  ^