#include <bits/stdc++.h>
using namespace std;

int main() {
  string A,B;
  cin >> A >> B;
  int sizA = A.size(),sizB = B.size(),lA = -1,lB = -1;
  for (int i = 0; i < sizA; i++) {
    if (A[i] == '.') lA = i;
  }
  for (int i = 0; i < sizB; i++) {
    if (B[i] == '.') lB = i;
  }
  bool under = false;
  if (lA == -1 && lB == -1) {
    under = false;
  }
  else if (lA == -1) {
    A.push_back('.');
    lA = sizA;
  }
  else if (lB == -1) {
    B.push_back('.');
    lB = sizB;
  }
  else under = true;
  if (under && sizA - lA > sizB - lB) {
    for (int i = 0; i < sizA - lA - sizB + lB; i++) {
      B.push_back('0');
    }
  }
  else if (under) {
    for (int i = 0; i < sizB - lB - sizA + lA; i++) {
      A.push_back('0');
    }
  }
  reverse(A.begin(),A.end());
  reverse(B.begin(),B.end());
  sizA = A.size(),sizB = B.size();
  if (sizA > sizB) {
    for (int i = 0; i < sizA - sizB; i++) {
      B.push_back('0');
    }
  }
  else {
    for (int i = 0; i < sizB - sizA; i++) {
      A.push_back('0');
    }
  }
  sizA = A.size(),sizB = B.size();
  string result;
  map<char,int> number;
  number['0'] = 0; number['1'] = 1; number['2'] = 2; number['3'] = 3; number['4'] = 4;
  number['5'] = 5; number['6'] = 6; number['7'] = 7; number['8'] = 8; number['9'] = 9;
  string num = "0123456789";
  int remain = 0,erased = 0;
  bool first = false;
  if (!under) first = true;
  for (int i = 0; i < sizA; i++) {
    if (A[i] == '.') {
      if (first) result.push_back('.');
      continue;
    }
    int a = number[A[i]],b = number[B[i]];
    char c = A[i];
    if ((a + b + remain)%10 == 0 && !first) {
      remain = (a + b + remain)/10;
    }
    else {
      first = true;
      result.push_back(num[(a + b + remain)%10]);
      remain = (a + b + remain)/10;
    }
  }
  if (remain > 0) result.push_back(remain);
  reverse(result.begin(),result.end());
  cout << result << endl;
}