#include<stdio.h>
#include<string.h>
#define N 400+10char a[N],b[N];
int a_h[N],a_l[N],b_h[N],b_l[N],h[N],l[N],h_count,l_count;int Judge(char *a)
{int i=0;while(a[i]!='.'&&a[i]!=0)i++;return i;
}int Change1(char *a,int *a_h,int a_point)
{int i,j=0;for(i=a_point-1;i>=0;i--){a_h[j]=a[i]-'0';j++;}return j;
}
int Change2(char *a,int *a_l,int a_point )
{int i,j=0;if(a[a_point]==0)return 0;for(i=a_point+1;a[i]!=0;i++){a_l[j]=a[i]-'0';j++;}return j;
}int max(int a,int b)
{return a>b?a:b;
}int main()
{int i;int a_point,b_point,a_h_count,b_h_count, a_l_count,b_l_count;while(scanf("%s%s",a,b)==2){memset(a_h,0,sizeof(a_h));memset(b_h,0,sizeof(b_h));memset(a_l,0,sizeof(a_l));memset(b_l,0,sizeof(b_l));memset(h,0,sizeof(h));memset(l,0,sizeof(l));a_point=Judge(a);b_point=Judge(b);a_h_count=Change1(a,a_h,a_point);b_h_count=Change1(b,b_h,b_point);a_l_count=Change2(a,a_l,a_point);b_l_count=Change2(b,b_l,b_point);h_count=max(a_h_count,b_h_count);l_count=max(a_l_count,b_l_count);//printf("%d\n",a_l_count);//printf("%d\n",b_l_count);//printf("%d\n",l_count);for(i=l_count-1;i>=0;i--){if(i==0){l[i]+=a_l[i]+b_l[i];h[0]+=l[i]/10;l[i]=l[i]%10;}else{l[i]+=a_l[i]+b_l[i];l[i-1]+=l[i]/10;l[i]=l[i]%10;}}for(i=0;i<h_count;i++){h[i]+=a_h[i]+b_h[i];h[i+1]+=h[i]/10;h[i]=h[i]%10;}if(h[h_count]!=0)h_count++;i=l_count-1;while(l[i]==0&&i>=0){l_count--;i--;}i=h_count-1;while(h[i]==0&&i>=1){h_count--;i--;}for(i=h_count-1;i>=0;i--)printf("%d",h[i]);if(l_count>0){printf(".");for(i=0;i<l_count;i++)printf("%d",l[i]);}printf("\n");//printf("l_count=%d\n",l_count);
    }return 0;
}