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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 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;
}
Program HOC24;
var m,n,i: integer;
t1,t2: longint;
begin
write('Nhap m;n: '); readln(m,n);
t1:=1; t2:=1;
for i:=1 to n do t1:=t1*i;
for i:=m to n do t2:=t2*i;
writeln('T1=',t1);
write('T2=',t2);
readln
end.
#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.
Bài 1:
#include <bits/stdc++.h>
using namespace std;
long long x,n,i,t;
int main()
{
cin>>n;
t=0;
for (i=1; i<=n; i++)
{
cin>>x;
if ((x<0) and (x%2!=0)) t=t+x;
}
cout<<t;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long a[10000],i,n,t1,t2,dem1,dem2;
int main()
{
cin>>n;
for (i=1; i<=n; i++)
cin>>a[i];
dem1=0;
dem2=0;
t1=0;
t2=0;
for (i=1; i<=n; i++)
{
if (a[i]>0)
{
dem1++;
t1+=a[i];
}
if (a[i]<0)
{
dem2++;
t2+=a[i];
}
}
long long t3=0;
for (i=1; i<=n; i++)
if (i%2==1) t3+=a[i];
long long t4=0;
for (i=1; i<=n; i++)
if (i%2==1 && a[i]%2==0) t4+=a[i];
cout<<t1<<" "<<t2<<endl;
cout<<dem1<<" "<<dem2<<endl;
cout<<t3<<endl;
cout<<t4<<endl;
for (i=1; i<=n; i++)
if (a[i]%3==0) cout<<a[i]<<" ";
return 0;
}
