diff --git a/2012/grothe/grothe.orig.c b/2012/grothe/grothe.orig.c
index 1d2c651fc..646746991 100644
--- a/2012/grothe/grothe.orig.c
+++ b/2012/grothe/grothe.orig.c
@@ -2,26 +2,31 @@
 #include<stdlib.h>
 #include<ctype.h>
 
-int u,z,q[0400],O[0x101],o[0401],I[257],w[258][0403],W[0x100],Z[0x103],c[0403],k
-,i,j,n,l,p,m;const char*J[0416],*M[0400];FILE*K[280],*s[0x102];void f(char*n,int
-a){char*e=n;while(*e!='\0'){if(tolower((int)*e)!=*e)fputc(040,stderr);fputc((*e)
--a,stderr);e+=1;}(void)fputc('\n',stderr);}int y(int a,int b);int t(int i,int j)
-{int k=i&j,l=i^j,n,m=1;for(n=1;k>=n;n<<=1)if(k&n)m=y(m,1<<n|1<<(n-1));return m>1
-?y(m,1<<l):1<<l;}int y(int a,int b){int n,i=0x0,j;if((n=w[a][b]))return n;for(;a
->>i;++i)for(j=0x0;b>>j;j++)if(((a>>i)&1)&&((b>>j)&1))n^=t(i,j);return w[a][b]=w[
-b][a]=n;}void a(void){for(i=0;i<z;i++){n=0;if(!i[I]){for(j=0;j<u;++j)if(i[O]==q[
-j])n=Z[j];}else for(j=0;j<u;j++)n^=w[Z[j]][w[I[i]][W[w[o[j]][O[i]^q[j]]]]];c[i]=
-n;}}void X(int v,int u){char*y=0;v-=1;switch(v){case(0x2):y ="HckngfVqQrgpKprwv"
-"Hkng"; BC(4):y="JempihXsStirMrtyxJmpi"; BC(0):y="PointValueTooLarge"; BC 0x1:y=
-"EvqmjdbufJoqvuQpjou";BC(6):y="TuOtv{zLorky";BC(3):y="WrrPdq|RxwsxwSrlqwv";BC(5)
-:y="GfiFwlzrjsyX~syf}"; BC(07):y="UvV|{w|{Mpslz";}if(u)exit(0); f(y,v);exit(1);}
-int main(int t,const char*T[]){for(i=00;i<0x100;++i)for(j=0;j<=i;++j)if(1==y(i,j
-))W[i]=j,W[j]=i;for(k=0x1;k<t;k++){p=0;for(l=0;(T[k][l]>=toupper('0'))&&(T[k][l]
-<=tolower('9'));l++){p=p*10+(T[k][l]-'0');if(p>=256)X(1,0);}if(T[k][l]=='-'){for
-(m=0;m<u;m++)if(q[m]==p)X(2,0);q[u]=p;J[u]=T[k]+l+1;K[u]=fopen(J[u],"r");if(!u[K
-])X(3,0);u++;}else if(T[k][l]=='+'){if(z>=256)X(4,0); O[z]=p;M[z]=T[k]+l+1;s[z]=
-fopen(M[z],"w");if(!s[z])X(5,0);z++;}else X(6,0);}if(!(u!=0))X(7,0);if(!(z!= 0))
-X(8,0);for(i=0;i<u;i++){n=1;for(j=0;j<u; j+=1)if(j!=i)n=w[n][q[i]^q[j]];o[i]=n;}
-for(i=0;i<z;i++){n=1;for(j=0;j<u;j++)n=w[n][O[i]^q[j]];I[i]=n;}while(!(0)){for(k
-=0;k<u;k++){int n;n=getc(K[k]); if(n==EOF)X(42,1); Z[k]=n;}a();for(k=0;k<z;k++)(
-void)putc(c[k],s[k]);}X(11,1);}
+static const int x[010][8]={{01,02,04,0x8,020,32,0x40,128,},{02,03,0x8,12,32,48,
+128,192,},{04,0x8,06,11,64,128,96,176,},{0x8,12,11,13,128,192,176,208,},{020,32,
+64,128,24,44,75,141,},{32,48,128,192,44,52,141,198,},{64,128,96,0260,75,141,103,
+185,},{0200,192,176,208,0x8D,0306,0271,0xDE,},};static int u,z,q[0400],O[0x101],
+o[0401],I[257],w[258][0403],W[0x100],Z[0x103],c[0403],k,i,j,n,l,p,m;static const
+char*J[0416],*M[0400];static FILE *K[280],*s[0x102];static void f(char *n,int a)
+{char *e=n;while(*e!='\0'){if(tolower((int)*e)!=*e)(void)fputc(040,stderr);fputc
+((*e)-a,stderr);e+=1;}(void)fputc('\n',stderr);}static int y(int a,int b){int n=
+0,i=0x0,j;for(;a>>i;++i)for(j=0x0;b>>j;j++)if(((a>>i)&1)&&((b>>j)&1))n^=x[i][j];
+return n;}static void a(void){for(i=0;i<z;i++){n=0;if(!i[I]){for(j=0;j<u;++j)if(
+i[O]==q[j])n=Z[j];}else for(j=0;j<u;j++)n^=w[Z[j]][w[I[i]][W[w[o[j]][O[i]^q[j]]]
+]];c[i]=n;}}static void X(int v,int u){char*y;v-=_STDIO_H;switch(v){case(0x2):y=
+"H""c""k""ngfVqQrgpKprwvHkng";break;case(4):y="J""e""m""p""ih""XsStirMrtyxJmpi";
+break;case(EXIT_SUCCESS):y="P""o""i""ntValueTooLarge";break;case 0x1:y="E""v""q"
+"m""j""d""b""u""f""J""o""q""v""u""Q""p""j""o""u";break;case(6):y="T""u""O""t""v"
+"{""z""L""o""r""k""y";break;case(3):y="WrrPdq|Rx""w""sx" "wSrlqwv";break;case(5)
+:y="GfiFwlzrjsyX~syf}";break;case(07):y="U""v""V""|""{""w""|""{""M""p""s""l""z";
+}if(u)exit(EXIT_SUCCESS);f(y,v);exit(EXIT_FAILURE);}int main(int t,const char*T[
+]){for(i=00;i<0x100;++i)for(j=0;j<=0xff;++j)w[i][j]=y(i,j);W[0]=0;for(i=1;i<256;
+i+=1){for(j=1;w[i][j]!=1;j+=1);i[W]=j;}for(k=0x1;k<t;k++){p=0;for(l=0;(T[k][l]>=
+toupper('0'))&&(T[k][l]<=tolower('9'));l++){p=p*10+(T[k][l]-'0');if(p>=256)X(1,0
+);}if(T[k][l]=='-'){for(m=0;m<u;m++)if(q[m]==p)X(2,0);q[u]=p;J[u]=T[k]+l+1;K[u]=
+fopen(J[u],"r");if(!u[K])X(3,0);u++;}else if(T[k][l]=='+'){if(z>=256)X(4,0);O[z]
+=p;M[z]=T[k]+l+1;s[z]=fopen(M[z],"w");if(!s[z])X(5,0);z++;}else X(6,0);}if(!(u!=
+0))X(7,0);if(!(z!=0))X(8,0);for(i=0;i<u;i++){n=1;for(j=0;j<u;j+=1)if(j!=i)n=w[n]
+[q[i]^q[j]];o[i]=n;}for(i=0;i<z;i++){n=1;for(j=0;j<u;j++)n=w[n][O[i]^q[j]];I[i]=
+n;}while(!(0)){for(k=0;k<u;k++){int n;n=getc(K[k]);if(n==EOF)X(42,1);Z[k]=n;}a()
+;for(k=0;k<z;k++)(void)putc(c[k],s[k]);}X(11,1);}
diff --git a/thanks-for-fixes.md b/thanks-for-fixes.md
index b4f495eca..939759f80 100644
--- a/thanks-for-fixes.md
+++ b/thanks-for-fixes.md
@@ -1963,6 +1963,9 @@ implicitly (linux doesn't seem to but macOS does).
 Cody added explicit linking of libm (`-lm`) as not all systems do this
 implicitly (linux doesn't seem to but macOS does).
 
+## [2012/grothe](2012/grothe/grothe.c) ([README.md](2012/grothe/README.md))
+
+Cody restored the original code from the archive.
 
 ## [2012/kang](2012/kang/kang.c) ([README.md](2012/kang/README.md]))