__int128

 1 #include <cstdio>
 2 #include <cstdlib>
 3 #include <cmath>
 4 #include <cstring>
 5 #include <time.h>
 6 #include <string>
 7 #include <set>
 8 #include <map>
 9 #include <list>
10 #include <stack>
11 #include <queue>
12 #include <vector>
13 #include <bitset>
14 #include <ext/rope>
15 #include <algorithm>
16 #include <iostream>
17 using namespace std;
18 #define ll long long
19 #define minv 1e-6
20 #define inf 1e9
21 #define pi 3.1415926536
22 #define E  2.7182818284
23 const ll mod=1e9+7;//998244353
24 const int maxn=1e2+10;
25 
26 inline void read(__int128 &x)
27 {
28     bool f=0;
29     char ch;
30     if ((ch=getchar())==EOF)
31         exit(0);
32     while (ch<‘0‘ || ch>‘9‘)
33         f|=ch==‘-‘,ch=getchar();
34     x=0;
35     while (ch>=‘0‘ && ch<=‘9‘)
36         x=(x<<3)+(x<<1)+ch-‘0‘,ch=getchar();
37     if (f)
38         x=-x;
39 }
40 
41 void write(__int128 &x)
42 {
43     int a[50],w=0,i;
44     bool f=0;
45     if (x<0)
46         f=1,x=-x;
47     while (x)
48     {
49         a[++w]=x%10;
50         x/=10;
51     }
52     ///putchar:faster
53     if (f)
54         putchar(‘-‘);
55     for (i=w;i>=1;i--)
56         putchar(a[i]+‘0‘);
57     if (w==0)
58         putchar(‘0‘);
59     putchar(‘\n‘);
60 }
61 
62 int main()
63 {
64     __int128 x,y;
65     while (1)
66     {
67         read(x);
68         read(y);
69         x+=y;
70         write(x);
71     }
72     return 0;
73 }