#include<stdio.h>#include<string.h>int main(){ int s[11]={0}; char c; while((c=getchar())!='\n'){ // scanf("%c",&c); s[c-'0']++; } for(int i=0;i<10;i++){ if(s[i]!=0) printf("%d:%d\n",i,s[i]); } return 0;}