#include <iostream.h>#include <string.h>int main(){	char a[80];	int s,l,i;	while(gets(a))	{		s=0;		l=strlen(a);		for(i=0;i<l;i++)		{			switch(a[i])			{				case '0': s=s+0;break;				case '1': s=s+1;break;				case '2': s=s+2;break;				case '3': s=s+3;break;				case '4': s=s+4;break;				case '5': s=s+5;break;				case '6': s=s+6;break;				case '7': s=s+7;break;				case '8': s=s+8;break;				case '9': s=s+9;break;			}		}		cout<<s<<endl;	}}