Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
#include <bits/stdc++.h>
using namespace std;
long long a[1000],i,n,j;
bool kt;
int main()
{
freopen("nguyento.inp","r",stdin);
freopen("nguyento.out","w",stdout);
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
for (i=1; i<=n; i++)
if (a[i]>1)
{
kt=true;
for (j=2; j*j<=a[i]; j++)
if (a[i]%j==0) kt=false;
if (kt==true) cout<<a[i]<<" ";
}
return 0;
}
#include <bits/stdc++.h> #define N int(1e7) #define sp ios_base::sync_with_stdio(0),cin.tie(0),cin.tie(0),cout.tie(0); using namespace std; long long l,r,d=0,b[N]; bool a[N]; void sang() { a[1]=true; for(int i=2; i*i<=N; i++) if(a[i]==false) for(int j=i*i; j<=N; j+=i) a[j]=true; for(int i=1; i<=N; i++) { if(a[i]==false) d+=i; b[i]=d; } } int main() { sp sang(); int t; while(t--) { cin>>l>>r; cout<<b[r]-b[l-1]<<'\n'; } }
const fi='bai25.inp';
fo='bai25.out';
var f1,f2:text;
a:array[1..1000]of integer;
i,n,dem,dem1,d:integer;
kt:boolean;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,n);
for i:=1 to n do
read(f1,a[i]);
dem:=0;
dem1:=0;
for i:=1 to n do
if a[i] mod 2=0 then inc(dem)
else inc(dem1);
writeln(f2,'So luong so chan la: ',dem);
writeln(f2,'So luong so le la: ',dem1);
d:=abs(a[2]-a[1]);
kt:=true;
for i:=2 to n do
if abs(a[i]-a[i-1])<>d then
begin
kt:=false;
break;
end;
if kt=true then writeln(f2,'Day la day cap so cong')
else writeln(f2,'Day khong la day cap so cong');
close(f1);
close(f2);
end.
program du_lieu;
uses crt;
var i,n:integer;
a:array[1..100]of integer;
tbc:real;
f:text;
begin
clrscr;
assign(f,'DULIEU.INP');reset(f);
readln(f,n);
for i:=1 to n do
begin
read(f,a[i]);
end;
close(f);
for i:=1 to n do
tbc:=tbc+a[i];
writeln(tbc/n);
readln;
end.
#include <bits/stdc++.h> #define N int(1e7) #define ll long long using namespace std; ll n,a[N],sum=0; int main() { ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0); cin>>n; for(int i=1;i<=n;++i) { cin>>a[i]; sum+=a[i]; } cout<<sum/n; }
Bai 2:
uses crt;
var a:array[1..100]of integer;
i,n,t,nn:integer;
begin
clrscr;
readln(n);
for i:=1 to n do readln(a[i]);
nn:=a[1];
for i:=1 to n do
if nn>a[i] then nn:=a[i];
write(nn);
readln;
end.
uses crt;
const fo='data.txt';
var f1:text;
a:array[1..10]of integer;
i,n:integer;
begin
clrscr;
assign(f1,fo); rewrite(f1);
n:=10;
for i:=1 to n do readln(a[i]);
for i:=1 to n do write(f1,a[i]:4);
close(f1);
readln;
end.
uses crt;
const fo='b.txt';
var f1:text;
a:array[1..200]of integer;
i,n:integer;
begin
clrscr;
assign(f1,fo); rewrite(f2);
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
for i:=1 to n do
write(f1,a[i]:4);
close(f1);
readln;
end.
program cap_so_cong;
uses crt; var a: array[1..100] of integer; i, n, k: integer;
{i la bien dem, k de luu cap so} begin clrscr; write('N= ');
readln(n); for i:=1 to n do begin write('A(',i,')= ');
readln(a[i]);
end;
{Bat dau phan kiem tra} k:=a[2]-a[1]; i:=2; repeat i:= i+1; until (a[i]<>a[i-1]+k) or (i>n);
if i>n then write('Day A la mot cap so cong') else
write('Day A khong phai la mot cap so cong');
readln
end.
with open('songuyen.txt', 'r') as f:
with open('ketqua.txt', 'w') as g:
for line in f:
numbers = line.split()
for number in numbers:
if int(number) % 2 == 0:
g.write(number + '\n')
#include <iostream>
#include <vector>
using namespace std;
bool divideArray(vector<int>& nums, int N) {
int totalSum = 0;
for (int i = 0; i < N; i++) {
totalSum += nums[i];
}
if (totalSum % 2 != 0) {
return false;
}
int halfSum = totalSum / 2;
vector<vector<bool>> dp(N + 1, vector<bool>(halfSum + 1, false));
dp[0][0] = true;
for (int i = 1; i <= N; i++) {
for (int j = 0; j <= halfSum; j++) {
dp[i][j] = dp[i - 1][j];
if (j >= nums[i - 1]) {
dp[i][j] = dp[i][j] || dp[i - 1][j - nums[i - 1]];
}
}
}
return dp[N][halfSum];
}int main() {
int N;
cout << "Nhập số phần tử N: ";
cin >> N;
vector<int> nums(N);
cout << "Nhập các phần tử của mảng: ";
for (int i = 0; i < N; i++) {
cin >> nums[i];
}
bool isPossible = divideArray(nums, N);
if (isPossible) {
cout << "Có thể chia mảng thành hai đoạn có tổng bằng nhau." << endl;
} else {
cout << "Không thể chia mảng thành hai đoạn có tổng bằng nhau." << endl;
}
return 0;
}
uses crt;
const fo='songuyen.txt';
var f1:text;
a:array[1..10]of integer;
i,n:integer;
begin
clrscr;
assign(f1,fo); rewrite(f1);
repeat
write('n='); readln(n);
if (0>=n) or (n>10) then write('vui long nhap lai n');
until (0<n) and (n<=10);
for i:=1 to n do
begin
repeat
write('a[',i,']='); readln(a[i]);
if (-4>a[i]) or (5<a[i]) then write('vui long nhap lai a[',i,']');
until (-4<=a[i]) and (a[i]<=5);
end;
for i:=1 to n do
writeln(f1,a[i]);
close(f1);
readln;
end.