bash-pure, 108 bytes

Result

ERROR

Code [DL]

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

stdin

6411341324687271439016441841047015059636347960854747055266025576006185906450366523844293542928652250

stdout

stderr

strace