give string s decimal digit 09 length nA substre sequence consecutive character stre the substre string define pair index leave right end so pair index l r 1 le l le r le n correspond substre string s we define vlr numeric value correspond substre lead zero allow itfor example n7 s1003004 v13100 v230 v273004You give n s integer w 1 le w nYou need process m query characterize 3 number l_i r_i k_i 1 le l_i le r_i le n 0 le k_i le 8the answer ith query pair substring length w denote L_1 L_1w1 L_2 L_2w1 L_1 ne L_2 substring different remainder dividing number vL_1 l_1w1 cdot vl_i r_i vL_2 L_2 w 1 9 equal k_i if match substre pair find pair L_1 small possible if match pair case minimize l_2note answer exist