#include<bits/stdc++.h> using namespace std; const int N=1e5+10; const int INF=0x3f3f3f3f; char a[N],b[N]; int a1[N],b1[N],c1[N],lenc,x; int main(){ cin>>a>>b; int lena=strlen(a); int lenb=strlen(b); for(int i=0;i<lena;i++) a1[i]=a[lena-i-1]-'0'; for(int j=0;j<lenb;j++) b1[j]=b[lenb-j-1]-'0';

lenc=max(lena,lenb);
for(int i=0;i<lenc;i++){
	c1[i]=a1[i]+b1[i]+x;
	x=c1[i]/10;
	c1[i]%=10;
}
c1[lenc]=x;
while(c1[lenc]==0&&lenc>0)
	lenc--;

for(int i=lenc;i>=0;i--){
	cout<<c1[i];
	
}
return 0;

}

#include<iostream>
using namespace std;
string s1,s2;
int a[505],b[505],c[505];
int la,lb;
int main()
{
	cin >> s1 >> s2;
	la = s1.size();
	lb = s2.size();
	for(int i = 0; i < la;i++) a[la - i] = s1[i] - '0';
	for(int i = 0; i < lb;i++) b[lb - i] = s2[i] - '0';
	int lc = max(la,lb)+1;
	for(int i=1;i <= lc;i++)
	{
		c[i] += a[i] +b[i];
		c[i + 1 ] = c[i]/10;\
		c[i] %= 10;
	}
	while(c[lc] == 0 && lc > 1)lc--;
	for(int i = lc; i >= 1; i--) cout << c[i];
	return 0;
}

#include <math.h>
#include <stack>
#include <stdio.h>
#include <iostream>
#include <vector>
#include <iomanip>
#include <string.h>
#include <algorithm>
#include<bits/stdc++.h>
using namespace std;
int a[510],b[510],c[510];
int la,lb;
string s1,s2; ;
int main(){
	cin >> s1 >> s2;
	la=s1.size();
	lb=s2.size();
	for (int i=0; i<la; i++){
		a[la-i]=s1[i]-'0';
	}
	for (int i=0; i<lb; i++){
		b[lb-i]=s2[i]-'0';
	}
	

	int lc = max(la,lb)+1;
	for (int i=1; i<=lc; i++){
		c[i]+=a[i]+b[i];
		c[i+1]=c[i]/10;
		c[i]%=10;
	}
	while(c[lc]==0&&lc>1)lc--;
	for (int i=lc; i>=1; i--)cout <<c[i]; 
	return 0;
}

#inlude<iostream>
using namespace std;
string s1,s2;
int a[505],b[505],c[505];
int la,lb;
int main()
{
	cin >> s1 >> s2;
	la = s1.size();
	lb = s2.size();
	for(int i = 0; i < la;i++) a[la - i] = s1[i] - '0';
	for(int i = 0; i < lb;i++) b[lb - i] = s2[i] - '0';
	int lc = max(la,lb)+1;
	for(int i 1;i <= lc;i++)
	{
		c[i] += a[i] +b[i];
		c[i + 1 ] = c[i]/10;\
		c[i] %= 10;
	}
	while(c[lc] == 0 && lc > 1)lc--;
	for(int i = lc; i >= 1; i--) cout << c[i];
	return 0;
}
 

#include <bits/stdc++.h>
using namespace std;
const int N = 1e5 + 10;
const int INF = 0x3f3f3f3f;
int main()
{
	char aa[1000],bb[1000],cc[1000];
	cin >> aa >> bb;
	int a[1000],b[1000],c[1000];
	memset(a,0,sizeof(a));
	memset(b,0,sizeof(b));
	memset(c,0,sizeof(c));
	int lena = strlen(aa);
	int lenb = strlen(bb);
	for(int i = 0;i < lena;i++)
		a[i] = aa[lena - i - 1] - '0';
	for(int i = 0;i < lenb;i++)
			b[i] = bb[lenb - i - 1] - '0';
	int len = max(lena,lenb);
	for(int i = 0;i < len;i++)
	{
		c[i] +=a[i] + b[i];
		if(c[i] > 9)
		{
			c[i+1]+= c[i]/10;
			c[i]%=10;
		}
	}
	if(c[len]!=0)
		len++;
		for(int i= len - 1;i >=0;i--)
			cout << c[i];
		return 0;
}

/*****************************************
备注：
******************************************/
#include <queue>
#include <math.h>
#include <stack>
#include <stdio.h>
#include <iostream>
#include <vector>
#include <iomanip>
#include <string.h>
#include <algorithm>
using namespace std;
#define LL long long
const int N = 1e5 + 10;
const int INF = 0x3f3f3f3f;
int a[N] ,b[N] ,c[N];
int main()
{
	string aa,bb;
	cin >> aa >> bb;
	int lena = aa.size();
	int lenb = bb.size();
	for(int i = 0 ; i < lena ; i++)
		a[ lena- 1 - i ] = aa[i] - '0';

	for(int i = 0 ; i < lenb ; i++)
		b[ lenb- 1 - i ] = bb[i] - '0';
	// 数字对齐的过程

	int len = max(lena , lenb);

	for(int i = 0 ; i < len ; i++)
	{
		c[i] += a[i] + b[i];
		if(c[i] > 9)
		{
			c[i+1]++;
			c[i] -= 10;
		}
	}
	if(c[len] != 0)
		len++;
	for(int i = len - 1; i >= 0 ;i--)
		cout <<c[i];
	return 0;
}

#include <bits/stdc++.h>
using namespace std;
const int maxn = 550;
char sa[maxn],sb[maxn];
int a[maxn],b[maxn],c[maxn];
int main(){
	scanf("%s",sa);
	scanf("%s",sb);
	memset(c,0,sizeof(c));
	int la = strlen(sa);
	int lb = strlen(sb);
	for(int i = 0 ; i < la ; i++) a[la - i - 1] = sa[i] - '0';
	for(int i = 0 ; i < lb ; i++) b[lb - i - 1] = sb[i] - '0';
	int lc = la > lb ? la : lb;
	for(int i = 0 ; i < lc ; i++){
		c[i] += a[i] + b[i];
		if(c[i] >= 10){
			c[i+1] = c[i]/10;
			c[i] = c[i]%10;
		}
	}
	if(c[lc] > 0) lc++;
	int cnt = lc - 1;
	while(c[cnt] == 0) cnt--;
	for(int i = cnt ; i >= 0 ; i--) printf("%d",c[i]);
	return 0;
}

#include<iostream> using namespace std; int a[100010],b[100010],c[100010]; int main() { string aa,bb; cin>>aa>>bb; int lena=aa.size(); int lenb=bb.size(); for(int i=0;i<lena;i++) a[lena-1-i]=aa[i]-'0'; for(int i=0;i<lenb;i++) b[lenb-1-i]=bb[i]-'0'; int len=max(lena,lenb); for(int i=0;i<len;i++) { c[i]+=a[i]+b[i]; if(c[i]>9) { c[i+1]++; c[i]-=10; } } if(c[len]!=0) len++; for(int i=len-1;i>=0;i--) cout<<c[i]; return 0; }

#include<iostream> using namespace std; int main() { int a,b,c; cin>>a>>b; c=a+b; cout<<c<<endl; }

#include <iostream>
#include <cstring>
using namespace std;
int main()
{
	string a,b;
	cin >> a >> b;
	int x[1000],y[1000];
	memset(x,0,sizeof(x));
	memset(y,0,sizeof(y));
	int lena=a.size();
	int lenb=b.size();
	for(int i = 0; i < lena; i++)x[i]=a[lena-1-i]-'0';
	for(int i = 0; i < lenb; i++)y[i]=b[lenb-1-i]-'0';
	
	int len = lena > lenb ? lena : lenb;
	
	for(int i = 0; i < len ; i++){
		x[i]+=y[i];
		x[i+1]+=x[i]/10;
		x[i]%=10;
	}
	
	if(x[len])len++;
	
	for(int i = len - 1; i >= 0; i--){
		cout << x[i];
	}
}