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mình ghi dư cái số 4 bên phần BAI7.INP nha mn
#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>
using namespace std;
long long a[1000],n,i;
int main()
{
freopen("so.inp","r",stdin);
freopen("so.out","w",stdout);
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;
}
const fi='tong.inp';
fo='tong.out';
var f1,f2:text;
a:array[1..100]of integer;
n,i,t:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,n);
for i:=1 to n do
read(f1,a[i]);
t:=0;
for i:=1 to n do
t:=t+a[i];
writeln(f2,t);
close(f1);
close(f2);
end.
#include <bits/stdc++.h>
using namespace std;
long long n,i,j,dem;
bool kt;
int main()
{
freopen("dnto.inp","r",stdin);
freopen("dnto.out","w",stdout);
cin>>n;
for (i=2; i<=n; i++)
{
kt=true;
for (j=2; j*j<=i; j++)
if (i%j==0) kt=false;
if (kt==true) dem++;
}
cout<<dem;
return 0;
}
const fi='bai1.inp';
fo='bai1.out';
var f1,f2:text;
a:array[1..100]of integer;
n,i,t,dem:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,n);
for i:=1 to n do
read(f1,a[i]);
t:=0;
dem:=0;
for i:=1 to n do
begin
if a[i] mod 2<>0 then t:=t+a[i]
else inc(dem);
end;
writeln(f2,'Tong cac so le la: ',t);
writeln(f2,'So so chan la: ',dem);
close(f1);
close(f2);
end.
uses crt;
const fi='dulieu.txt';
var f1:text;
a:array[1..100]of real;
t:real;
i,n:integer;
begin
clrscr;
assign(f1,fi); reset(f1);
readln(f1,n);
for i:=1 to n do readln(f1,a[i]);
t:=0;
for i:=1 to n do t:=t+a[i];
writeln(t);
close(f1);
readln;
end.
const fi='xsum1.inp';
fo='xsum1.out';
var f1,f2:text;
a:array[1..20000]of integer;
i,n,j,x,dem,k,m,t:integer;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,n,x);
for i:=1 to n do
read(f1,a[i]);
dem:=0;
for i:=1 to n do
for j:=1 to n do
begin
for k:=1 to n do
if (i<j) and (j<k) then
begin
t:=0;
for m:=i to k do
t:=t+a[m];
if t=x then inc(dem);
end;
end;
for i:=1 to n do
if x=a[i] then inc(dem);
writeln(f2,dem);
close(f1);
close(f2);
end.
program COST;
var n,m,s,dem:int64;a:
array[1..1000000] of int64;
i,j:longint;
begin
readln(n,m);
for i := 1 to n do read(a[i]);
dem := 0;
for i := 1 to n do
begin
s := 0;
for j := i to n do
begin
s := s+a[j];
if s <= m then
begin
inc(dem);
continue;
end
else if a[j] > m then break;
end;
end;
write(dem);
end.