急求 解密解密解密！！

第一条
AR46696516
第二条
121，15.2315，13514，115，222，115，259，222，6514，1119.2315，26215，209114，2359，205147.116，149，4114，24914，269，109，251522，8514，819，161.2315，19，149.2515147，2521114.
y=x(1←x→26)
c*(100a+10g+d）-a=the answer
第三条
101575325，732933，933315325，21175325，97335325，581，732933。。
#################
933315325，2581，8981，97153。。
891733，975781，453317，6533153，2915325。。
f(x)=4x-3（1←x→26）
（B-2A）[100A+10(B+2A)+(B-A)]-A=THE ANSWER
密钥f（x）

方法：eval替换为exit

结果：

<?php
$o="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";
$lll=0;
$lllllllllll='base64_decode';
$ll=0;
$llllllllll='ord';
$llll=0;
$lllll=3;
$l=$lllllllllll($o);
$lllllll=0;
$llllll=($llllllllll($l[1])<<8)+$llllllllll($l[2]);
$lllllllllllll='strlen';
$lllllllll=16;
$llllllll="";
for(;$lllll<$lllllllllllll($l);){
if($lllllllll==0)
if($llllll&0x8000)else}
else$llllllll[$lllllll++]=$llllllllll($l[$lllll++]);$llllll<<=1;$lllllllll--;
}
$llllllllllll='chr';
$lllll=0;
$lllllllll="?".$llllllllllll(62);
$llllllllll="";
for(;$lllll<$lllllll;)
$lllllllll.=$llllllllll.$llllllllllll(60)."?";
?></div>

<div class='clear'></div>
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