char binum[100000];
void main(){
int index;
int length;
int temp=0;
scanf("%s", binum);
length = strlen(binum);
index = strlen(binum);
while (index>0){
switch(index % 3){
case 1 :
temp += 1 * (binum[length - index]-'0');
printf("%d", temp);
temp = 0;
break;
case 2 :
temp += 2 * (binum[length - index]-'0');
break;
case 0:
temp += 4 * (binum[length - index]-'0');
break;
}
index--;
}
}