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Uses crt;
var i,n:longint;
S,A:real;
begin
clrscr;
Readln(A);
S:=0;n:=0;
while S<=A do
Begin
S:=0;
inc(n);
for i:= 1 to n do S:=S+1/i;
end;
Writeln(n);
readln;
end.
```cpp
#include <iostream>
#include <vector>
#include <algorithm>
int main() {
int n;
std::cout << "Enter the number of integers (n < 10^5): ";
std::cin >> n;
std::vector<int> numbers(n); std::cout << "Enter " << n << " integers: "; for (int i = 0; i < n; ++i) { std::cin >> numbers[i]; } int sumOfOdd = 0; for (int i = 0; i < n; ++i) { if (numbers[i] % 2 != 0) { sumOfOdd += numbers[i]; } } std::sort(numbers.begin(), numbers.end()); std::cout << "Sum of odd integers: " << sumOfOdd << std::endl; std::cout << "Sorted sequence: "; for (int i = 0; i < n; ++i) { std::cout << numbers[i] << " "; } std::cout << std::endl; return 0;
}
```
Program HOC24;
const fi='Cau1.INP';
fo='Cau2.OUT';
var i,a,b,c,t,d: integer;
f: text;
function ucln(x,y: integer): integer;
var t: integer;
begin
while y<>0 do
begin
t:= x mod y;
x:=y;
y:=t;
end;
ucln:=x;
end;
procedure ip;
begin
assign(f,fi);
reset(f);
read(f,a,b,c);
close(f);
end;
procedure out;
begin
assign(f,fo);
rewrite(f);
for i:=b to c do
begin
if i mod a=0 then write(f,i,' ');
t:=t+i;
end;
writeln(f);
while t<>0 do
begin
t:=t div 10;
inc(d);
end;
writeln(f,d);
if ucln(a,b,c)=1 then write(f,1) else write(f,0);
close(f);
end;
begin
ip;
out;
end.
#include <iostream>
using namespace std;
int main()
{
int n,i,j;
cout<<"Nhap n="; cin>>n;
for (i=1; i<=n; i++)
{
for (j=i; j<=i+n-1; j++)
cout<<j<<" ";
cout<<endl;
}
return 0;
}
program hoidaptinhoc;
uses crt;
var K,N,X,Y,M,i : longint;
z : string;
BEGIN
clrscr;
writeln('Nhap so dong trong moi trang cua quyen sach: '); readln(K);
writeln('Nhap so thu tu cua dong: '); readln(N);
if (N mod K) = 0 then begin X:=N div K; Y:=K end;
if (N mod K) <> 0 then begin X:= (N div K) + 1; Y:=N mod K end;
M:=0;
for i:=1 to X do
begin
str(i,z);
M:=M+length(z);
end;
writeln('X= ',X,' Y= ',Y);
writeln('M= ',M);
readln;
END.
Bài 2:
#include <bits/stdc++.h>
using namespace std;
long long n,i;
//chuongtrinhcon
int demuoc(long long n)
{
int dem=0;
for (long long i=1; i<=n; i++)
if (n%i==0) dem++;
return (dem);
}
//chuongtrinhchinh
int main()
{
freopen("tamuoc.inp","r",stdin);
freopen("tamuoc.out","w",stdout);
cin>>n;
long long dem=0;
for (i=1; i<=n; i++)
if (demuoc(i)==3) dem++;
cout<<dem;
return 0;
}
1.
#include <bits/stdc++.h>
using namespace std;
int A,n,i;
int main()
{
cin>>n;
A=0;
For (i=0;i<=n;i++)
A=A+1/i;
cout<<A;
Return 0;
}