#include<iostream>#include<stack>
using namespace std;intmain(){int a, b,num;
bool isFu = false;
cin >> a >> b;
num = a + b;int i =0;
stack<char> stack;if(num <0){
isFu = true;
num =-num;}if(num ==0){
stack.push(0);}while(num !=0){
stack.push(num %10);
num = num /10;++i;if(i ==3&& num!=0){
stack.push(',');
i =0;}}if(isFu){
stack.push('-');}while(stack.size()){if(stack.top()!=','&& stack.top()!='-'){int num =(int)stack.top();
cout << num;}else{
cout << stack.top();}
stack.pop();}}