Accepted
/in/foo.cc: In function 'void insert()': /in/foo.cc:24:9: warning: unused variable 'j' [-Wunused-variable] int i, j, now = 0,len=strlen(s2); ^ /in/foo.cc: In function 'double query()': /in/foo.cc:37:9: warning: unused variable 'j' [-Wunused-variable] int i, j, now = 0; ^