int main(){

const int number = 10;
int x;
int count[number];
int i;

for(i=0;i<number;i++){
    count[i]=0;
}

scanf("%d",&x);
while(x!=-1){
    if(x>=0&&x<=9){
        count[x]++;
    }
    scanf("%d",&x);
}
for ( i = 0; i < number; i++) {

    printf("%d:%d\n",i,count[i]);
}

return 0;

}