//这里我先将两个字符串小数点前后补齐到相同的长度,再一一对位相加 (这里记得进位
#include <iostream>
#include<string>
using namespace std;

int main() {
    string a,b;
    string longer,shorter;
    while (getline(cin,a)) { // 注意 while 处理多个 case
        getline(cin,b);

        int find1=a.find('.');
        int find2 = b.find('.');//小数点位置
        if(find1<find2){
            longer = b;
            shorter =a;
        }
        else{
            longer =a;
            shorter = b;
        }//为了方便最高一位进位,在最高位前添加一位
        longer.insert(0,"0");
       do{
           //补全小数点前的0
            shorter.insert(0,"0");
            find1=longer.find('.');
            find2 = shorter.find('.');
        } while(find1!=find2);

        if(longer.size()<shorter.size()){
            swap(longer,shorter);
        }
        while(longer.size()!=shorter.size()){
            shorter.insert(shorter.size(),"0");
		  //补全小数点后的0
        }

        int flag=0;
        for(int i=longer.size()-1;i>=0;i--){
            if(longer[i]=='.') continue;
            int res =(longer[i]-'0')+(shorter[i]-'0')+flag;
            flag=res/10;
            res%=10;
            longer[i]=res+'0';
        }
        if(flag!=0){
            longer[0]=flag+'0';
            cout<<longer;

        }
        else{//没有进位的话直接输出
            cout<<longer.substr(1,longer.size());
        }
    }
}