/in/foo.cc: In function 'int main()':
/in/foo.cc:5:11: warning: unused variable 'o' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
           ^
/in/foo.cc:5:13: warning: unused variable 'p' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
             ^
/in/foo.cc:5:15: warning: unused variable 'q' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
               ^
/in/foo.cc:5:17: warning: unused variable 'w' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
                 ^
/in/foo.cc:5:19: warning: unused variable 'v' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
                   ^
/in/foo.cc:5:25: warning: unused variable 'x' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
                         ^
/in/foo.cc:5:27: warning: unused variable 'm' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
                           ^
/in/foo.cc:5:29: warning: unused variable 's' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
                             ^
/in/foo.cc:5:31: warning: unused variable 't' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
                               ^
/in/foo.cc:5:33: warning: unused variable 'r' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
                                 ^
/in/foo.cc:5:35: warning: unused variable 'y' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
                                   ^
/in/foo.cc:5:37: warning: unused variable 'u' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
                                     ^
/in/foo.cc:5:39: warning: unused variable 'k' [-Wunused-variable]
 int n,l=1,o,p,q,w,v,z=0,x,m,s,t,r,y,u,k;
                                       ^