/in/foo.cc: In function 'int left(int, int, long long int)':
/in/foo.cc:9:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
         if(r==l+1)
           ^
/in/foo.cc: In function 'int right(int, int, long long int)':
/in/foo.cc:18:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses]
         if(r==l+1)
           ^