CODEHASH

こんなふうに

main(aa){puts("XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX");}

テンプレートを入力すると

h[0] = 5 * h[16] + 19           OK      XVs9    0<=16<=0
h[1] = 5 * h[15] + 24           OK      XcPV    1<=15<=1
h[2] = 5 * h[14] + 8            OK      XeIc    2<=14<=2
h[3] = 5 * h[13] + 12           OK      Xs9e    3<=13<=3
h[4] = 5 * h[12] + 22           NG!!!   XPVs    4<=12<=4
h[5] = 5 * h[11] + 21           NG!!!   XIcP    5<=11<=5
h[6] = 5 * h[10] + 24           OK      X9eI    6<=10<=6
h[7] = 5 * h[9] + 19            NG!!!   XVs9    7<=9<=7
h[8] = 5 * h[8] + 24            OK      XcPV    8<=8
h[9] = 5 * h[7] + 8             NG!!!   XeIc    9<=7<=9
h[10] = 5 * h[6] + 12           OK      Xs9e    10<=6<=10
h[11] = 5 * h[5] + 22           NG!!!   XPVs    11<=5<=11
h[12] = 5 * h[4] + 21           NG!!!   XIcP    12<=4<=12
h[13] = 5 * h[3] + 2            OK      X}eI    13<=3<=13
h[14] = 5 * h[2] + 22           OK      X;s9    14<=2<=14
h[15] = 5 * h[1] + 16           OK      X)PV    15<=1<=15
h[16] = 5 * h[0] + 1            OK      X"Ic    16<=0<=16
h[17] = 23 * h[31] + 7          NG!!!   "X9e    17<=31<=17
h[18] = 23 * h[30] + 20         OK      (XVs    18<=30<=18
h[19] = 23 * h[29] + 9          NG!!!   sXcP    19<=29<=19
h[20] = 23 * h[28] + 21         OK      tXeI    20<=28<=20
h[21] = 23 * h[27] + 4          NG!!!   uXs9    21<=27<=21
h[22] = 23 * h[26] + 23         OK      pXPV    22<=26<=22
h[23] = 23 * h[25] + 16         NG!!!   {XIc    23<=25<=23
h[24] = 23 * h[24] + 16         OK      )X9e    24<=24
h[25] = 23 * h[23] + 19         NG!!!   aXVs    25<=23<=25
h[26] = 23 * h[22] + 23         OK      aXcP    26<=22<=26
h[27] = 23 * h[21] + 5          NG!!!   (XeI    27<=21<=27
h[28] = 23 * h[20] + 21         OK      nXs9    28<=20<=28
h[29] = 23 * h[19] + 14         NG!!!   iXPV    29<=19<=29
h[30] = 23 * h[18] + 16         OK      aXIc    30<=18<=30
h[31] = 23 * h[17] + 18         NG!!!   mX9e    31<=17<=31
ZNUY!!Q!U!O!!SSDW!X!P!W!R!J!C!Z!
main(aa){puts("ZNUY!!Q!U!O!!SSDW!X!P!W!R!J!C!Z!");}

こんな感じに32元の連立合同式を作って勝手に解いてくれるので、あとは適当にテンプレートをいじってた。
テンプレート全探索もできたんだよなあ…