#include<stdio.h>
int main(void)
{
int a[100],b[100],i=0;
while(scanf("%d %d",&a,&b)!=EOF){
for(i=0;i<=strlen(a);i++){
printf("%d",a[i]+b[i]);
if(i==strlen(a)-1) printf("\n");
else printf(" ");
}
}
return 0;
}