เลขที่ ทด.11
FJvOeLCZ     (SELECT 2*(IF((SELECT * FROM (SELECT CONCAT(0x7171707071,(SELECT (ELT(4524=4524,1))),0x717a787071,0x78))s), 8446744073709551610, 8446744073709551610)))




http://cert.technicphrae.ac.th