/in/foo.cc: In function 'void solve1(int, int)':
/in/foo.cc:50:13: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
      int m=l+r>>1,i,j,k;
            ~^~
/in/foo.cc:50:23: warning: unused variable 'k' [-Wunused-variable]
      int m=l+r>>1,i,j,k;
                       ^