/in/foo.cc: In function 'int main()':
/in/foo.cc:9:9: warning: unused variable 't' [-Wunused-variable]
     int t=max(la,lb),r=min(la,lb);
         ^
/in/foo.cc:9:22: warning: unused variable 'r' [-Wunused-variable]
     int t=max(la,lb),r=min(la,lb);
                      ^