m,n;i,j;char*p,s[80];u[80];r[80];d[80];v;e;main(){for(;p=gets(s);n++)for(m=0;*p;m++)v=*p-85||v/++u[m]?v:u[m],*p-82||++r[n],e=*p++-68||e/++d[m]?e:d[m];for(;v--;j=!puts(s))for(i=m;i--;)s[i]=u[i]>v?j=32,85:j;for(j=v;++j<n;puts(s))for(s[i=m+r[j]]=0;i--;)s[i]=i<m?j%~-n&&i%~-m?32:35:82;for(j=0;e/++j;puts(s))for(s[i=m-1]=0;i--;)s[i]=d[i]/j?68:32;}
Note that non-ascii characters in the above source code will be escaped (such as \x9f).