1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
#include <iostream>

using namespace std;
string a,b;
int as,bs,p;
int main()
{
    cin>>a>>b;
    if(b.size()>a.size())swap(a,b);
    else if(b.size()==a.size()&&b>a)swap(a,b);
    as=a.size();
    bs=b.size();
    for(int i=1;i<=as;i++)
    {
        if(bs>=i)a[as-i]+=b[bs-i]-'0';
        a[as-i]+=p;
        p=0;
        if((int)(a[as-i]-'0')>9)
        {
            a[as-i]-=10;
            p=1;
        }
    }
    if(p)cout<<p;
    cout<<a;
    return 0;
}