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#include <bits/stdc++.h>
using namespace std;
long long n;
int main()
{
cin>>n;
bool kt=true;
for (int i=2; i*i<=n; i++)
if (n%i==0) kt=false;
if (kt==true && n>=2) cout<<"YES";
else cout<<"NO";
return 0;
}
#include <bits/stdc++.h>
using namespace std;
bool kt;
int n,i;
int main()
{
cin>>n;
kt=true;
for (i=2; i*i<=n; i++)
if (n%i==0) kt=false;
if ((kt==true) and (n>1)) cout<<"YES";
else cout<<"NO";
return 0;
}
Bài 1
Var s,i:integer;
tb:real;
Begin
Write('Nhap n = ');readln(n);
i:=1;
s:=0;
While i<=n do
Begin
s:=s+i;
i:=i+1;
End;
tb:=s/n;
Writeln('Tong la ',s);
Write('Trung binh la ',tb:10:2);
Readln;
End.
Bài 2
Var i,n,souoc:integer;
Begin
Write('Nhap n = ');readln(n);
i:=1;
While i <= n do
Begin
i:=i + 1;
If n mod i = 0 then souoc:=souoc + 1;
End;
If souoc = 1 then write(n,' la so nguyen to')
Else write(n,' khong la so nguyen to');
Readln;
End.
c:
#include <bits/stdc++.h>
using namespace std;
long long a[1000],n,i;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
for (i=1; i<=n; i++)
if (a[i]%2==0) cout<<a[i]<<" ";
return 0;
}
d:
#include <bits/stdc++.h>
using namespace std;
long long a[1000],n,i,nn;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
nn=a[1];
for (i=1; i<=n; i++) nn=min(nn,a[i]);
cout<<nn;
return 0;
}
2:
#include <bits/stdc++.h>
using namespace std;
int main()
{
int n,i,kt=0;
cin>>n;
for (int i=2; i*i<=n; i++)
if (n%i==0) kt=1;
if (kt==0) cout<<"YES";
else cout<<"NO";
}
#include <bits/stdc++.h>
using namespace std;
bool ktsnt(long long n)
{
long long i;
if(n<2) return false;
else
{
for(i=2;i<=sqrt(n);i++)
if(n%i==0)
return false;
return true;
}
}
long long cnt;
int main(){
ios_base::sync_with_stdio(0);
cin.tie(0); cout.tie(0);
cin>>cnt;
if(ktsnt(cnt)==true)
cout<<"YES";
else
cout<<"NO";
return 0;
}
var i,n,dem:integer;
begin
write('Nhap n = ');readln(n);
for i:=1 to n do
begin
if n mod i = 0 then dem:=dem+1;
end;
if dem = 2 then write(n,' la so nguyen to')
else write(n,' khong la so nguyen to');
readln;
end.
so_am = 0
so_duong = 0
while True:
n = int(input("Nhap vao mot so nguyen: "))
if n == 0:
break
elif n < 0:
so_am += 1
else:
so_duong += 1
print("So am: ", so_am)
print("So duong: ", so_duong)
#include <bits/stdc++.h>
using namespace std;
long long n;
//chuongtrinhcon
bool ktnt(long long n)
{
if (n<2) return(false);
else
for (int i=2; i*i<=n;i++)
if (n%i==0) return (false);
return(true);
}
//chuongtrinhchinh
int main()
{
//freopen("KTSNT.INP","r",stdin);
//freopen("KTSNT.OUT","w",stdout);
cin>>n;
if (ktnt(n)==true) cout<<"1";
else cout<<"0";
return 0;
}
