#include <stdio.h>
#include <string.h>

int flag;

void Sum(char *s1,char *s2)
{
	int n = strlen(s1)-1;
	while(n >= 0)
	{
		if(n == 0)
		{
			if((s1[n] - '0') + (s2[n] - '0') >= 10)
				flag = 1;
		}
		else if((s1[n] - '0') + (s2[n] - '0') >= 10)
			s1[n-1]+=1;
		s1[n] = ((s1[n] - '0') + (s2[n] - '0')) % 10 + '0';
		n--;
	}
}

int main()
{
	char s1[1000],s2[1000];
	while(scanf("%s",s1) != EOF)
	{
		scanf("%s",s2);
		flag = 0;
		Sum(s1,s2);
		char *p = s1;
		if(flag == 1) printf("1");
		while(*p != '\0')
		{
			printf("%c",*p);
			p++;
		}
		printf("\n");
	}
	
	return 0;
}