bash-pure, 102 bytes

Result

WA

Code [DL]

while read -s -n 1 C;do $((++a[C]));done;for i in {0..10};do for(j=a[i];j>0;j--);do write $i;done;done

stdin

6202463078714552968099228602412981749301816764909158998208491841393354039847422354564308930502466802

stdout

stderr

/bin/bash: warning: setlocale: LC_ALL: cannot change locale (en_US.UTF-8)
/code.bash: line 1: syntax error near unexpected token `('
/code.bash: line 1: `while read -s -n 1 C;do $((++a[C]));done;for i in {0..10};do for(j=a[i];j>0;j--);do write $i;done;done'

strace