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#include <bits/stdc++.h>
using namespace std;
double b,c;
int main()
{
cin>>b>>c;
if ((b==0) and (c==0)) cout<<"Vo so nghiem";
else if ((b==0) and (c!=0)) cout<<"Vo nghiem";
else cout<<fixed<<setprecision(2)<<-c/b;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
double b,c;
int main()
{
cin>>b>>c;
if ((b==0) and (c==0)) cout<<"Vo so nghiem";
else if ((b==0) and (c!=0)) cout<<"Vo nghiem";
else cout<<fixed<<setprecision(2)<<-c/b;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
double b,c;
int main()
{
cin>>b>>c;
if ((b==0) and (c==0)) cout<<"Vo so nghiem";
else if ((b==0) and (c!=0)) cout<<"Vo nghiem";
else cout<<fixed<<setprecision(2)<<-c/b;
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";
}
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.
Bài 1:
uses crt;
var n,i,s:integer;
begin
clrscr;
write('Nhap n='); readln(n);
s:=0;
for i:=1 to n do
if i mod 6=0 then s:=s+i;
writeln(s);
readln;
end.
Bài 2:
uses crt;
var a,b,c,ucln,i:integer;
begin
clrscr;
write('a='); readln(a);
write('b='); readln(b);
write('c='); readln(c);
while a<>b do
begin
if a>b then a:=a-b
else b:=b-a;
end;
ucln:=a;
while ucln<>c do
begin
if ucln>c then ucln:=ucln-c
else c:=c-ucln;
end;
writeln(ucln);
readln;
end.
1:
#include <bits/stdc++.h>
using namespace std;
long long x;
int main()
{
cin>>x;
if (x%5==0) cout<<"Yes";
else cout<<"No";
return 0;
}
2:
#include <bits/stdc++.h>
using namespace std;
long long x;
int main()
{
cin>>x;
if (x%15==0) cout<<"Yes";
else cout<<"No";
return 0;
}
program tim_uoc;
uses crt;
var n,i,j:longint;
begin
clrscr;
write('nhap so n:');readln(n);
write('cac uoc cua n la:');
for i:=1 to n do
if n mod i=0 then write(i:3);
writeln;
j:=0;
for i:=1 to n do
if n mod i=0 then j:=j+1;
if j=2 then writeln(n,' la so nguyen to')
else writeln(n,' khong phai la so nguyen to');
readln;
end.
uses crt;
var a:int64;
begin
clrscr;
readln(a);
if a mod 2=0 then writeln('la so chan')
else writeln('la so le');
readln;
end.