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;
}