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