Day 14: Add obfuscated C solution

14/obf.c

@@ -0,0 +1,24 @@
+#include <stdio.h>
+#include <string.h>
+
+                           enum{M
+                           #define\
+                              P(a,\
+                              b) (\
+                              ((a-\
+                              65)<<\
+                           6)|(b-65))
+                          =P(90,90)+1};
+          size_t C[M]={0},T[M];void p(char*s){size_t r=            -1,
+     R=0,k,n,i;for(i=65;i<90+1;i++){k=P(i,98);if((n=C[k])){if     (n<r)
+   r= n;else if(n>R)R=n;}}printf("%s: %lu\n",s,R-r);}int main(   void){
+ size_t i,j,n,k;char t[128],R[128][3]={0};scanf("%127[A-Z]\n",t)  ;for(
+ i=0;t[i]/*⁻⁻*/;i++){if(i)/*⁻⁻*/C[P(t[i-1],t[i])]++;C[P(t[i],98)]++;}
+for(i=0/*      */;scanf(/*      */"%c%c -> %c\n",&R[i][0],&R[i][1],&R[i
+][2])==/*      */3;i++);/*      */for(i=0;i<40;i++){memset(T,0,M*sizeof
+(size_t))/*₋₋*/;for(j=0;R[/*₋₋*/j][0];j++){k=P(R[j][0],R[j][1]);if((n=C
+ [k])){C[k]=0;C[P(R[j][2],98)]+=n;T[/*⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻*/P(R[j][0],R[j][
+ 2])]+=n;T[P(R[j][2],R[j][1])]+=n;}}/* MADE IN CHINA */for(j=0;   R[j][
+   0];j++){k=P(R[j][0],R[j][2]);C[k]/*₋₋₋₋₋₋₋₋₋₋₋₋₋₋₋*/=T[k];     k=P(R
+      [j][2],R[j][1]);C[k]=T[k];}if(i==9)p("Silver");}p("G"       "old"
+                                                                   );}