#include<iostream> #include<string> #include<algorithm> using namespace std; int main() { string s1,s2; int i,len1,len2,max; while(cin>>s1>>s2) { len1=s1.length(); len2=s2.length(); maxlen=len1>len2?len1:len2; reverse(s1.begin(),s1.end()); reverse(s2.begin(),s2.end()); int temp=0,k=0,j; int sum[512]; for(i=0; i<maxlen; i++) { int a=0,b=0; if(i<len1) a=s1[i]-'0'; else a=0; if(i<len2) b=s2[i]-'0'; else b=0; int result=a+b+temp; temp=result>9?1:0; sum[k++]=result%10; } if(temp>0) { sum[k]=1; for(j=k; j>=0; j--) cout<<sum[j]; } else { for(j=k-1; j>=0; j--) cout<<sum[j]; } cout<<endl; } return 0; }