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#include <bits/stdc++.h>
using namespace std;
long long a,b,i,dem,s;
int main()
{
cin>>a>>b;
dem=0;
s=0;
for (i=a; i<=b; i++)
if (i%2==0)
{
dem++;
s=s+i;
}
cout<<dem<<" "<<s;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long n,i,x,a[1000],t;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
cin>>x;
t=0;
for (i=1; i<=n; i++)
if (a[i]!=x)
{
cout<<a[i]<<" ";
t+=a[i];
}
cout<<endl;
cout<<t;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long a,b,i,dem,s;
int main()
{
cin>>a>>b;
dem=0;
s=0;
for (i=a; i<=b; i++)
if (i%2==0)
{
dem++;
s=s+i;
}
cout<<dem<<" "<<s;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long a,b,i,dem,s;
int main()
{
cin>>a>>b;
dem=0;
s=0;
for (i=a; i<=b; i++)
if (i%2==0)
{
dem++;
s=s+i;
}
cout<<dem<<" "<<s;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long a,b,i,dem,s;
int main()
{
cin>>a>>b;
dem=0;
s=0;
for (i=a; i<=b; i++)
if (i%2==0)
{
dem++;
s=s+i;
}
cout<<dem<<" "<<s;
return 0;
}
uses crt;
var a:array[1..200]of integer;
n,i,k,t,t1:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
write('Nhap k='); readln(k);
t:=0;
for i:=1 to n do
if a[i] mod 2<>0 then t:=t+a[i];
t1:=0;
for i:=1 to n do
if a[i] mod k=0 then t1:=t1+a[i];
writeln('Tong cac phan tu le la: ',t);
writeln('Tong cac phan tu la boi cua ',k,' la: ',t1);
readln;
end.
Program HOC24;
var s: real;
i,a: integer;
begin
write('Nhap a = '); readln(a);
s:=0;
if a>2 then
for i:=1 to 50 do s:=s+i/(a+i) else write(a,' chua thoa man dieu kien >2');
write('S = ',S:1:2);
readln
end.
uses crt;
var a,i:integer;
s:real;
begin
clrscr;
write('Nhap a='); readln(a);
s:=0;
for i:=1 to 50 do
s:=s+i/(a+i);
writeln(s:4:2);
readln;
end.