diff --git a/07/solution.c b/07/solution.c
index 0b2857f..ef6be75 100644
--- a/07/solution.c
+++ b/07/solution.c
@@ -7,11 +7,10 @@
       0,t=                        0; c\
        < n        ;      c        ++ )
       *p=C,G      =0    ,P      =0,S=0
-        ,c,m=0,n=0,r    ,t;for(;fscanf
+        ,c,m=0,n=0,t    ;for(;fscanf
             #define A abs(C[c]-P)
     (stdin,"%i%*c",p)==1;p++,n++)if(*p>m
-  #define    R(z) if(P==0||t<z)z        =t;
-)m  =*p;for(;P<m;P++){l t+=A;R(S)l for(r  =1
-;r<=A;r++)t+=r;if(!P||t<G)G=t;}printf("Silver:"
-  " %u\n"                           "Gold: %u"
-  "\n",S                            ,G);}
+  #define  R( z)   if   (!  P|| t<  z)z=t;
+)m=*p;for(;P<m;P++){l t+=A;R(S)l t+=A*(A+1)/
+2;R(G)}printf                   ("Silver: %"
+"u\nGold: "                     "%u\n",S,G);}