# h1 CTF資安研究社 RE
1.Find FLAG{Y0U_gOt_th3_flag_bY_sTr1ngS}
2.add flag{y0u_added_thr33_nums!}

v7 = input("who's there")
v9=0
for
v3=v7 > 64 & v7 < 90
if v3
{
v4 = v7
v9=v4 -65 +26 *v9
}
if (v9 == 63075521699681049)

v9=ord(v7[i])-65+26*v9逆推