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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;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
for (i=1; i<=n; i++) cout<<a[i]<<" ";
cout<<endl;
t=0;
for (i=1; i<=n; i++) if (a[i]%2==0) t+=a[i];
cout<<"Tong cac so chan la: "<<t<<endl;
sort(a+1,a+n+1);
cout<<"Day so giam dan la: ";
for (i=n; i>=1; i--) cout<<a[i]<<" ";
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long a[1000],i,n;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
for (i=1; i<=n; i++) cout<<a[i]<<" ";
cout<<endl;
cout<<"Cac so duong la: ";
for (i=1; i<=n; i++) if (a[i]>0) cout<<a[i]<<" ";
cout<<endl;
for (i=1; i<=n; i++) if (a[i]%2==0) cout<<a[i]<<" ";
for (i=1; i<=n; i++) if (a[i]%2!=0) cout<<a[i]<<" ";
return 0;
}
#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++) cout<<a[i]<<" ";
cout<<endl;
for (i=1; i<=n; i++)
if (a[i]%2==0 && a[i]<0) cout<<a[i]<<" ";
cout<<endl;
for (i=1; i<=n; i++)
if (a[i]>0) cout<<a[i]<<" ";
for (i=1; i<=n; i++)
if (a[i]==0) cout<<a[i]<<" ";
for (i=1; i<=n; i++)
if (a[i]<0) cout<<a[i]<<" ";
return 0;
}
Bài 1:
uses crt;
var x,i,t,dem:longint;
tbc:real;
begin
clrscr;
write('nhap x=');readln(x);
t:=0;
dem:=0;
for i:=1 to x do
if x mod i=0 then
begin
t:=t+i;
inc(dem);
end;
tbc:=t/dem;
writeln('trung binh cong cac phan tu la uoc cua ',x,' la: ',tbc:4:2);
readln;
end.
Bài 3:
uses crt;
var a:array[1..100]of integer;
m,n,i:integer;
begin
clrscr;
write('n='); readln(n);
for i:=1 to n do
begin
write('a[',i,']='); readln(a[i]);
end;
{----------------------------------------------------}
write('m='); readln(m);
for i:=1 to n do
if a[i]<0 then a[i]:=m;
for i:=1 to n do
write(a[i]:4);
readln;
end.
Bài 4:
uses crt;
var a:array[1..100]of integer;
n,i,j:integer;
begin
clrscr;
write('n='); readln(n);
for i:=1 to n do
begin
write('a[',i,']='); readln(a[i]);
end;
{----------------------------------------------------}
for i:=1 to n do
for j:=i+1 to n do
if (a[i] mod a[j]=0) then writeln(a[i],' ',a[j]);
if a[j] mod a[i]=0 then writeln(a[j],' ',a[i]);
readln;
end.
Bài 5:
uses crt;
var a:array[1..100]of integer;
n,i,j:integer;
begin
clrscr;
write('n='); readln(n);
for i:=1 to n do
begin
write('a[',i,']='); readln(a[i]);
end;
{----------------------------------------------------}
for i:=1 to n do
for j:=i+1 to n do
if a[i]=sqr(a[j]) then writeln(a[i],' ',a[j]);
if a[j]=sqr(a[i]) then writeln(a[j],' ',a[i]);
readln;
end.
Bài 6:
uses crt;
var a:array[1..100]of integer;
n,i,j:integer;
begin
clrscr;
write('n='); readln(n);
for i:=1 to n do
begin
write('a[',i,']='); readln(a[i]);
end;
{----------------------------------------------------}
for i:=1 to n do
for j:=i+1 to n do
if sqr(a[i])+sqr(a[j])=100 then writeln(a[i],' ',a[j]);
if sqr(a[j])+sqr(a[i])=100 then writeln(a[j],' ',a[i]);
readln;
end.
Bài 7:
uses crt;
var a:array[1..100]of integer;
n,i,t1,t2:integer;
begin
clrscr;
write('n='); readln(n);
for i:=1 to n do
begin
write('a[',i,']='); readln(a[i]);
end;
{----------------------------------------------------}
t1:=0;
t2:=0;
for i:=1to n do
begin
if i mod 2=0 then t1:=t1+a[i]
else t2:=t2+a[i];
end;
if t1=t2 then writeln('thoa man')
else writeln('khong thoa man');
readln;
end.
Bài 8:
uses crt;
var a,b:array[1..100]of integer;
n,i,kt,j,dem:integer;
begin
clrscr;
write('n='); readln(n);
for i:=1 to n do
begin
write('a[',i,']='); readln(a[i]);
end;
{----------------------------------------------------}
dem:=0;
for i:=1 to n do
if i mod 2=0 then
begin
dem:=dem+1;
b[dem]:=a[i];
end;
kt:=0;
for j:=1 to dem-1 do
if a[j]>a[j+1] then kt:=1;
if kt=0 then writeln('cac phan tu o vi tri chan cua day tang dan')
else writeln('cac phan tu o vi tri chan cua day khong tang dan');
readln;
end.
Bài 9:
uses crt;
var a,b,c:array[1..100]of integer;
n,i,j,dem,dem1:integer;
begin
clrscr;
write('n='); readln(n);
for i:=1 to n do
begin
write('a[',i,']='); readln(a[i]);
end;
{----------------------------------------------------}
for i:=1 to n do
begin
if i mod 2=1 then
begin
dem:=dem+1;
b[dem]:=a[i];
end
else begin
dem1:=dem1+1;
c[dem1]:=a[i];
end;
end;
for i:=1 to dem do
write(b[i]:4);
for j:=1 to dem1 do
write(c[j]:4);
readln;
end.
Cảm ơn bạn nhiều!