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uses crt;
var n,i,dem,j,t:integer;
kt:boolean;
begin
clrscr;
readln(n);
t:=0;
for i:=2 to n do
begin
kt:=true;
for j:=2 to i-1 do
if i mod j=0 then kt:=false;
if kt=true then
begin
write(i:4);
t:=t+i;
end;
end;
writeln;
writeln(t);
readln;
end.
uses crt;
var a:array[1..10000]of integer;
i,n,kt,j:integer;
begin
clrscr;
readln(n);
for i:=1 to n do readln(a[i]);
for i:=1 to n do
if a[i]>1 then
begin
kt:=0;
for j:=2 to trunc(sqrt(a[i])) do
if a[i] mod j=0 then kt:=1;
if kt=0 then write(a[i]:4);
end;
readln;
end.
#include <bits/stdc++.h>
using namespace std;
long long a[100],n,i,ln,nn,vt1,vt2;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
ln=a[1];
nn=a[1];
for (i=1; i<=n; i++)
{
ln=max(ln,a[i]);
nn=min(nn,a[i]);
}
cout<<ln<<" "<<nn;
return 0;
}
Var n,i,vtl,vtn,so max,min:integer;
Begin
Write('Nhap so luong so = ');readln(n);
vtl:=0;
vtn:=0;
max:=-32768;
min:=32767;
For i:=1 to n do
Begin
Write('Nhap vao so thu ',i);readln(so);
If so > max then
Begin
Max:=so;
vtl:=i;
End;
If so < min then
Begin
Min:=so;
vtn:=i;
End;
Writeln('So lon nhat la ',max,' tai vi tri thu ',i);
Write('So nho nhat la ',min,' tai vi tri thu ',i);
Readln;
End.
uses crt;
var i,n,t,j,kt:integer;
begin
clrscr;
readln(n);
t:=0;
for i:=2 to n do
if n mod i=0 then
begin
kt:=0;
for j:=2 to trunc(sqrt(i)) do
if i mod j=0 then kt:=1;
if kt=0 then t:=t+i;
end;
write(t);
readln;
end.
uses crt;
var n,t:integer;
{------------------kiem-tra-so-nguyen-to----------------------------}
function ktnt(x:integer):boolean;
var i:integer;
kt:boolean;
begin
kt:=true;
for i:=2 to trunc(sqrt(x)) do
if x mod i=0 then
begin
kt:=false;
break;
end;
if kt=true then ktnt:=true
else ktnt:=false;
{----------------------chuong-trinh-chinh------------------------}
begin
clrscr;
t:=0;
repeat
write('Nhap n='); readln(n);
if (n mod 2=0) then t:=t+n;
until ktnt(n)=false;
writeln(t);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
long long n,i,x,t,dem,j;
int main()
{
cin>>n;
x=n;
t=0;
while (n>0)
{
t=t+n%10;
n=n/10;
}
cout<<t;
dem=0;
for (i=2; i<=x; i++)
{
bool kt=true;
for (j=2; j*j<=i; j++)
if (i%j==0) kt=false;
if (kt==true) dem++;
}
cout<<dem;
return 0;
}
