#include <bits/stdc++.h>
using namespace std;
long long a,b,arr[100];
int main(){
cin>>a>>b;
arr[1]=a;
arr[2]=b;
for(int i=3;i<=10;i++){
long long c=arr[i-1]+arr[i-2],ans=0;
while(c){
ans=c%10+ans*10;
c/=10;
}
arr[i]=ans;
}
cout<<arr[10];
}
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