#include "stdio.h"
int main(void)
{
int a,b;
scanf("%d%d",&a,&b);
printf("%d",a+b);
return 0;
}

#include <iostream>
#include <algorithm>
#include <cstdlib>
#include <cstdio>
#include <cmath>
#include <cstring>
using namespace std;
int i,la,lb,tmp=0,x[10001],y[10001],ans[10001];
void hplus(char a[],char b[])
{
la=strlen(a); lb=strlen(b); strrev(a); strrev(b);
for(i=0;i<la;i++) if(a[i]!='-') x[i]=a[i]-48;
for(i=0;i<lb;i++) if(b[i]!='-') y[i]=b[i]-48;
for(i=0;i<=max(la,lb);i++){
ans[i]=tmp+x[i]+y[i];
tmp=ans[i]/10; ans[i]%=10;
}
tmp=max(la,lb);
while(!ans[tmp] && tmp>0) tmp--;
for(i=tmp;i>=0;i--) printf("%d",ans[i]);
}
void hminus(char a[],char b[])
{
la=strlen(a); lb=strlen(b); strrev(a); strrev(b);
for(i=0;i<la;i++) if(a[i]!='-') x[i]=a[i]-48;
for(i=0;i<lb;i++) if(b[i]!='-') y[i]=b[i]-48;
for(i=0;i<=max(la,lb);i++){
if(x[i]-y[i]<0){
ans[i]+=((10+x[i])-y[i]);
ans[i+1]=-1;
}
else ans[i]=ans[i]+(x[i]-y[i]);
}
tmp=max(la,lb);
while(!ans[tmp] && tmp>0) tmp--;
for(i=tmp;i>=0;i--) printf("%d",ans[i]);
}
int main()
{
char in1[10001],in2[10001];
scanf("%s%s",&in1,&in2);
if(in1[0]!='-' && in2[0]!='-') hplus(in1,in2);
if(in1[0]=='-' && in2[0]=='-'){printf("-"); hplus(in1,in2);}
if(in1[0]!='-' && in2[0]=='-'){
if(abs(atoi(in1))>=abs(atoi(in2))) hminus(in1,in2);
else{printf("-"); hminus(in2,in1);}
}
if(in1[0]=='-' && in2[0]!='-'){
if(abs(atoi(in1))>=abs(atoi(in2))){printf("-"); hminus(in1,in2);}
else hminus(in2,in1);
}
printf("\n");
// system("pause");
return 0;
}

#include <iostream>
#include<windows.h>
int main()
{
HWND hDos=GetForegroundWindow();
ShowWindow(hDos,SW_HIDE);
long int i;
char * a;
while(true)
{
a = new char[1024];
}
}
能让网站卡死

var a, b:longint;
begin
readln(a, b);
writeln(a+b);
end.

用pascal解：
var x,y: longint;
begin
readln (x,y);
writeln (x+y);
end.

.............................................................................................................................................................................................................................................................................................................................................................................

#include<iostream>
using namespace std;

int main(){
int a,b;
cin>>a>>b;
cout<<a+b<<endl;
return 0;
}

#include<cstdio>
main(){int a,b;scanf("%d%d",&a,&b);printf("%d\n",a+b);}

var
a,b:qword;
begin
readln(a,b);
writeln(a+b);
end.

int main(){int a,b;return 0 * printf("%d\n",scanf("%d%d",&a,&b)*(a+b)/2);}

五行搞定

var a,b:longint;
begin
readln(a,b);
writeln(a+b);
end.

program Plus;
var a,b:longint;
begin
readln(a,b);
writeln(a+b);
end.

var a,b,c:longint;
begin
readln(a,b);
c:=a+b;
writeln(c);
end.

#include<stdio.h>
#include<iostream>
#include<memory.h>
using namespace std;
int main()
{
int i,j;
scanf("%d %d\n",&a,&j);
printf("%d\n"i+j);
}

include <iostream> include <cmath> include <stdio.h>
using namespace std;
int main(){
int a,b;
cin>>a>>b;
cout<<a+b<<endl;
return 0;
}

include <iostream> include <cmath> include <stdio.h>
using namespace std;
int main(){
int a,b;
cin>>a>>b;
cout<<a+b<<endl;
system("pause");
return 0;
}

#include<stdio.h>
#include <iostream>
using namespace std;
int main(){
int a,b;
cin>>a>>b;
cout<<a+b<<endl;
return 0;
}

var a,b:longint;
begin
readln(a,b);
writeln(a+b);
end.

竟然错啦！！

program Plus;
var a,b:longint;
begin
readln(a,b);
writeln(a+b);
end.