/in/foo.cc: In function 'int main()':
/in/foo.cc:12:8: warning: unused variable 'j' [-Wunused-variable]
  int i,j,k,l,m,minh=0; 
        ^
/in/foo.cc:12:10: warning: unused variable 'k' [-Wunused-variable]
  int i,j,k,l,m,minh=0; 
          ^
/in/foo.cc:12:12: warning: unused variable 'l' [-Wunused-variable]
  int i,j,k,l,m,minh=0; 
            ^
/in/foo.cc:12:14: warning: unused variable 'm' [-Wunused-variable]
  int i,j,k,l,m,minh=0; 
              ^