foo.cc: In function 'int main()':
foo.cc:42:9: warning: unused variable 'i' [-Wunused-variable]
   42 |     int i,j,k,l,r,x,y;
      |         ^
foo.cc:42:11: warning: unused variable 'j' [-Wunused-variable]
   42 |     int i,j,k,l,r,x,y;
      |           ^
foo.cc:42:15: warning: unused variable 'l' [-Wunused-variable]
   42 |     int i,j,k,l,r,x,y;
      |               ^
foo.cc:42:17: warning: unused variable 'r' [-Wunused-variable]
   42 |     int i,j,k,l,r,x,y;
      |                 ^
foo.cc:42:19: warning: unused variable 'x' [-Wunused-variable]
   42 |     int i,j,k,l,r,x,y;
      |                   ^
foo.cc:42:21: warning: unused variable 'y' [-Wunused-variable]
   42 |     int i,j,k,l,r,x,y;
      |                     ^

Found 7 testcases.
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