#include<stdio.h>
#include<string.h>
#include<time.h>
#include<unistd.h>
#include<sys/time.h>

typedef unsigned int O;
typedef unsigned char o;

const O swap_byte_order = 1,
           R = 64,
           B = 0x4000;
o m[B + 16],
     s[16][256], S[16][256];
O n[B / 4], *f,
     x[R * 4], X[R * 4], g[4],
     A[256], L, U, N,
     i, u, k, h, a, z;

int w, v, V;

tm *W, C;

FILE *P, *Q;

   const char *t[4] =
   {
      "h\32:,<$4~$HhVF+\16tz;Z}8^\1Mt|:0t;^OC|1h|||L|Av>jLt{H*J"
      "H*\nb9]zIcx3hp9n`Nm*?$F-\rzWdN{\4nC&^KEf\33;z0h\0~z25K25"
      "\13Tb{R7\2P8\t04KDNBZo|Lt427J27\n42KT\27\37n'Kb9\rb;\14*"
      "I~PzGPZ!PX\"jg\4.W\16XP;PV\r(ZeRU\16~/.(Xft\22\3h\2=$>BV"
      "aD&%9@.eD,e~u3&[6\10z\rr\32k(X6\n{\rzbmX\"e$J\16|t3&U1 o"
      "JR/9n\t\33,7\13PJ{^\21[Z\23[@\36[p^yB\37[D\32\\P$fj\rzx"
      "\\<vK\2NyMvM\1.%gz!.xTBh\0>,\6Dj[if[;D~BjYj&?B`\16\rR1\5"
      "&1Af[j:_4FiDDhDF9DP>\6@\2aP\6\n4Zv@\0b^}7j\7Mh\4NTr<j\5N"
      "hNkjOkH(KH(\13J}r~>hld<J7|R\31\22R\t\2l\14qXt\35ry=l\nr`"
      "?hR\32\21F\27""7ne<b15*IJ2u>",
      "[yyyy-mm-dd] <key> [input] [output]",
      "read error",
      "write error"
   };

O r(O p, int q)
{
   return (p >> q) | (p << (32 - q));
}

O l(O p, int q)
{
   return (p << q) | (p >> (32 - q));
}

void c(O p, O *q)
{
   if( swap_byte_order )
      for(i = 0; i < p; i++)
         q[i] = (l(q[i], 8) & 0x00ff00ff) | (r(q[i], 8) & 0xff00ff00);
}

void I()
{
   h = A[U];
   L = (L << 19) ^ (L >> 13);
   A[U] = a =
      A[h & 0xff] + L + N;
   N = A[(a >> 8) & 0xff] + h;
   U = (U + 1) & 0xff;
}

void e(O &p, O &b, O &q, O &d)
{
   p = l(p, 13);
   q = l(q, 3);
   d ^= q ^ (p << 3);
   b ^= p ^ q;
   d = l(d, 7);
   b = l(b, 1);
   p ^= b ^ d;
   q ^= d ^ (b << 7);
   p = l(p, 5);
   q = l(q, 22);
}

void E(O &p, O &b, O &q, O &d)
{
   q = r(q, 22);
   p = r(p, 5);
   q ^= d ^ (b << 7);
   p ^= b ^ d;
   d = r(d, 7);
   b = r(b, 1);
   d ^= q ^ (p << 3);
   b ^= p ^ q;
   q = r(q, 3);
   p = r(p, 13);
}

void F(int d)
{

   for(h = 0; h < 16; h++)
   {
      w = t[0][(d * 16 + h) * 3] ^ 81;
      v = t[0][(d * 16 + h) * 3 + 1] ^ 25;
      V = t[0][(d * 16 + h) * 3 + 2] ^ 16;
      for(i = 0; i < 256; i++)
      {
         u = ((i + w) & 0x7f) | (i & 0x80);
         u = (((u >> 1) + v) & 0x7f) | ((u << 7) & 0x80);
         s[h][i] = (((u >> 1) + V) & 0x7f) | ((u << 7) & 0x80);
      }

      for(a = 0; a < 2; a++)
         for(z = 0; z < 8; z++)
            for(i = 0; i < 256; i++)
            {
               k = s[h][i] ^ s[h][i ^ (1 << z)];
               if( !(k & (k - 1)) )
               {
                  u = i ^ (1 << ((z + 1) % 8));
                  V = s[h][i];
                  s[h][i] = s[h][u];
                  s[h][u] = V;
               }
            }
   }
}

void D(O *q)
{
   for(h = 0; h < R; h++)
   {
      E(q[0], q[1], q[2], q[3]);
      for(a = 0; a < 4; a++)
      {
         k = q[a];
         for(z = 0; z < 4; z++)
         {
            k = l(k, 8);
            k = (k & ~0xff) | S[h & 15][k & 0xff];
         }
         q[a] = k ^ X[h * 4 + a];
      }
   }
   for(h = 0; h < 4; h++)
      q[h] ^= f[h];
}

int y(int p, void *q)
{
   return fread(q, 1, p, P);
}

void Y(int p)
{
   fwrite(m, p, 1, Q);
}

void T(int p)
{
   puts(t[p]);
}

void Z()
{
   fclose(P);
}

int main(int p, char **q)
{
   if( p < 2 )
      T(1);
   else
   {
      int b;
      memset(&C, 0, sizeof(C));
      if( sscanf(q[1], "%d-%d-%d", &C.tm_year, &C.tm_mon, &C.tm_mday) - 3 )
      {
         b = 1;
         time_t d = time(NULL);
         W = localtime(&d);
         C.tm_year = W->tm_year;
         C.tm_mon = W->tm_mon;
         C.tm_mday = W->tm_mday;
      }
      else
      {
         b = 2;
         C.tm_year -= 1900;
         C.tm_mon--;
      }
      if( !(P = fopen(q[b], "rb")) )
      {
         T(2);
         return 1;
      }
      memset(A, 10, 1024);
      y(1024, A);
      Z();
      c(256, A);

      L = 1;

      for(i = U = N = 0; i < 4; x[i++] = N)
         for(u = 0; u < 8192; u++)
            I();

      F(8);
      for(i = 1; i < R; i++)
      {
         for(u = 0; u < 4; u++)
         {
            h = x[(i - 1) * 4 + u];
            for(k = 0; k < 4; k++)
            {
               h = (h & ~0xff) | s[i & 15][h & 0xff];
               h = r(h, 8);
            }
            x[i * 4 + u] = h;
         }
         e(x[i * 4], x[i * 4 + 1], x[i * 4 + 2], x[i * 4 + 3]);
      }

      b++;
      if( p > b &&
          (q[b][0] - '-' || q[b][1]) )
      {
         if( !(P = fopen(q[b], "rb")) )
         {
            T(2);
            return 1;
         }
      }
      else
      {
         P = stdin;
      }
      b++;
      if( p > b &&
          (q[b][0] - '-' && q[b][1]) )
      {
         if( !(Q = fopen(q[b], "wb+")) )
         {
            Z();
            T(3);
            return 1;
         }
      }
      else
      {
         Q = stdout;
      }

      z = 2551443;
      F((((mktime(&C) - 434928) % z) * 8) / z);

      if( b - 4 )
      {
         for(i = 0; i < R; i++)
            for(u = 0; u < 4; u++)
               X[(R - 1 - i) * 4 + u] = x[i * 4 + u];

         for(u = 0; u < 16; u++)
            for(i = 0; i < 256; i++)
               S[15 - u][s[u][i]] = (o)i;

         if( y(16, g) == 16 )
         {
            c(4, g);
            f = g;

            w = 16;
            for(u = 0;
                w == 16 && (w = y(B - u, m + u)) > 0; u = 16)
            {
               w += u;

               v = (w & ~15) - 16;
               if( v > 0 )
               {

                  c(v / 4, (O*)m);
                  memcpy(n, m, v);
                  for(i = 0; i < (O)v; i += 16)
                  {
                     D((O*)(m + i));
                     f = (O*)(((o*)n) + i);
                  }
                  c(v / 4, (O*)m);

                  f = (O*)memcpy(g, f, 16);

                  Y(v);

                  w -= v;
                  memmove(m, m + v, w);
               }
            }

            if( w == 17 && m[16] < 16 )
            {
               if( !(u = (O)m[16]) )
                  u = 16;

               c(4, (O*)m);
               D((O*)m);
               c(4, (O*)m);
               Y(u);
            }
         }
      }
      else
      {
         timeval d;
         gettimeofday(&d, NULL);
         memcpy(A, &d, sizeof(d));
         A[99] = getpid();
         for(i = 0; i < 8192; i++)
            I();
         for(i = 0; i < 4; g[i++] = N)
            I();

         f = (O*)memcpy(n, g, 16);
         c(4, g);
         memcpy(m, g, 16);
         Y(16);

         for(w = 0; (w & 15) == 0 && (w = y(B, m)) > 0;)
         {
            for(i = 0; i < 16; m[w + i++] = N & 0xff)
               I();

            v = (w + 15) / 16;

            c(v * 4, (O*)m);
            for(i = 0; i < (O)w; i += 16)
            {
               O *q = (O*)(m + i);
               for(u = 0; u < 4; u++)
                  q[u] ^= f[u];
               for(u = 0; u < R; u++)
               {
                  for(k = 0; k < 4; k++)
                  {
                     h = q[k] ^ x[u * 4 + k];
                     for(z = 0; z < 4; z++)
                     {
                        h = (h & ~0xff) | s[u & 15][h & 0xff];
                        h = r(h, 8);
                     }
                     q[k] = h;
                  }
                  e(q[0], q[1], q[2], q[3]);
               }
               f = (O*)(m + i);
            }

            f = (O*)memcpy(n, f, 16);

            c(v * 4, (O*)m);
            Y(v * 16);
         }

         m[0] = w & 15;
         Y(1);
      }

      Z();
      P = Q;
      Z();
   }
   return 0;
}