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uses crt;
var a:array[1..250]of integer;
i,n,dem,t,t1,t2,t3,t4:integer;
begin
clrscr;
repeat
write('Nhap n='); readln(n);
until (0<n) and (n<=250);
for i:=1 to n do
begin
repeat
write('A[',i,']='); readln(a[i]);
until (0<a[i]) and (a[i]<=500);
end;
dem:=0;
for i:=1 to n do
if a[i] mod 2=1 then inc(dem);
writeln('So phan tu co gia tri le la: ',dem);
t:=0;
for i:=1 to n do
if i mod 2=0 then t:=t+a[i];
writeln('Tong cac phan tu co chi so chan la: ',t);
t1:=0;
for i:=1 to n do
if i mod 2=1 then t1:=t1+a[i];
writeln('Tong cac phan tu co chi so le la: ',t1);
t2:=0;
for i:=1 to n do
if (i mod 2=0) and (a[i] mod 2=0) then t2:=t2+a[i];
writeln('Tong cac phan tu chan co chi so chan la: ',t2);
t3:=0;
for i:=1 to n do
if (i mod 2=1) and (a[i] mod 2=1) then t3:=t3+a[i];
writeln('Tong cac phan tu co chi so le la: ',t3);
t4:=0;
for i:=1 to n do
t4:=t4+a[i];
writeln('Trung binh cong cac so trong day la: ',t4/n:4:2);
readln;
end.
a: #incldue <bits/stdc++.h>
using namespace std;
long long i,n,x,t;
int main()
{
cin>>n;
t=0;
for (i=1; i<=n; i++)
{
cin>>x;
if (x>0) t=t+x;
}
cout<<t;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long x,i,n,nn;
int main()
{
cin>>n;
int dem=0;
for (i=1; i<=n; i++)
{
cin>>x;
if (x==0) dem++;
}
cout<<dem;
return 0;
}
#include <bits/stdc++.h>
using namespace std;
long long n,i,x,t,dem;
int main()
{
cin>>n;
dem=0;
t=0;
for (i=1; i<=n; i++)
{
cin>>x;
if (x%2!=0)
{
dem++;
t=t+x;
}
}
double s=t*1.0/dem*1.0;
cout<<fixed<<setprecision(2)<<s;
return 0;
}
uses crt;
var a:array[1..100]of integer;
i,n,dem,dem1,dem2,t:integer;
s:real;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
repeat
write('A[',i,']='); readln(a[i]);
until a[i]>0;
end;
for i:=1 to n do
write(a[i]:4);
writeln;
dem:=0;
for i:=1 to n do
if a[i]>10 then inc(dem);
writeln('So phan tu lon hon 10 la: ',dem);
dem1:=0;
dem2:=0;
for i:=1 to n do
begin
if a[i] mod 2=0 then inc(dem1)
else inc(dem2);
end;
writeln('So luong so chan la: ',dem1);
writeln('So luong so le la: ',dem2);
t:=0;
s:=1;
for i:=1 to n do
begin
if (i mod 2=0) and (a[i] mod 2<>1) then t:=t+a[i];
if (i mod 2=1) and (a[i] mod 2=0) then s:=s*a[i];
end;
writeln('Tong cac so o vi tri chan co gia tri le la: ',t);
writeln('Tich cac so o vi tri le co gia tri chan la: ',s:4:2);
writeln('Cac so le la: ');
for i:=1 to n do
if a[i] mod 2<>0 then write(a[i]:4);
writeln;
writeln('Cac so chan va lon hon 10 la: ');
for i:=1 to n do
if (a[i] mod 2=0) and (a[i]>10) then write(a[i]:4);
readln;
end.
a: #include <bits/stdc++.h>
using namespace std;
long long n,i,x,dem;
int main()
{
cin>>n;
dem=0;
for (i=1; i<=n; i++)
{
cin>>x;
if (x%2!=0) dem++;
}
cout<<dem;
return 0;
}
uses crt;
var a:array[1..100]of integer;
i,n,tc,tl,t:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
tc:=0;
tl:=0;
for i:=1 to n do
begin
if a[i] mod 2=0 then tc:=tc+a[i]
else tl:=tl+a[i];
end;
writeln('Tong cac so chan la: ',tc);
writeln('Tong cac so le la: ',tl);
t:=0;
for i:=1 to n do
t:=t+a[i];
writeln('Tong cua day so la: ',t);
readln;
end.
uses crt;
var a:array[1..1000]of integer;
i,n,dem1,dem2,t1,dem3,j,kt:integer;
begin
clrscr;
readln(n);
for i:=1 to n do
readln(a[i]);
dem1:=0;
dem2:=0;
t1:=0;
for i:=1 to n do
begin
if a[i] mod 2=0 then
begin
dem1:=dem1+1;
t1:=t1+a[i];
end;
else dem2:=dem2+1;
end;
dem3:=0;
for i:=1 to n do
if (a[i]>1) then
begin
kt:=0;
for j:=2 to trunc(sqrt(a[i])) do
if a[i] mod j=0 then kt:=1;
if kt=0 then dem3:=dem3+1;
end;
writeln(dem1, ' ',dem2);
writeln(t1);
writeln(dem3);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
int n,s,i,t;
int main()
{
freopen("bai1.inp","r",stdin);
freopen("bai1.out","w",stdout);
cin>>n>>s;
t=0;
for (int i=1; i<=n; i++)
{
int x;
cin>>x;
if (x%s==0) t+=x;
}
cout<<t;
}
1:
uses crt;
var a:array[1..100]of integer;
i,n,dem,t:integer;
tb:real;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
t:=0;
dem:=0;
for i:=1 to n do
if a[i]>0 then
begin
t:=t+a[i];
inc(dem);
end;
writeln('Tong cac so duong la: ',t);
writeln('So luong cac so duong la: ',dem);
tb:=t/dem;
writeln('Trung binh cong cac so duong la: ',tb:4:2);
readln;
end.
2:
uses crt;
var n,i,s:integer;
t:real;
begin
clrscr;
write('Nhap n='); readln(n);
s:=0;
t:=1;
for i:=1 to n do
begin
s:=s+i;
t:=t*i;
end;
writeln('Tong cua day so tu 1 toi ',n,' la: ',s);
writeln('Tich cua day so tu 1 toi ',n,' la: ',t);
readln;
end.