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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.
uses crt;
const fi='mang.txt';
var a:array[1..100]of integer;
i,n,t1,t2:integer;
f1:text;
begin
clrscr;
assign(f1,fi); rewrite(f1);
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
t1:=0;
t2:=0;
for i:=1 to n do
begin
if a[i]>0 then
begin
t1:=t1+a[i];
end;
if a[i]<0 then
begin
t2:=t2+a[i];
end;
end;
writeln(f1,'Tong cac so duong la: ',t1);
writeln(f1,'Tong cac so am la: ',t2);
if abs(t1)>abs(t2) then writeln(f1,'Gia tri tuyet doi cua ',t1,' lon hon gia tri tuyet doi cua ',t2)
else if abs(t1)<abs(t2) then writeln(f1,'Gia tri tuyet doi cua ',t2,' lon hon gia tri tuyet doi cua ',t1)
else writeln(f1,'Gia tri tuyet doi cua ',t1,' bang gia tri tuyet doi cua ',t2);
close(f1);
end.
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;
}
uses crt;
var a:array[1..255]of longint;
k,i,n,t:longint;
begin
clrscr;
repeat
write('Nhap so phan tu:'); readln(n);
until (0<n) and (n<=255);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
write('Nhap k='); readln(k);
t:=0;
for i:=1 to n do
if a[i]<k then t:=t+a[i];
writeln('Tong cac so nho hon ',k,' trong day la: ',t);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
long long x,n,i,dem1,dem2,t1,t2;
int main()
{
cin>>n;
dem1=0;
dem2=0;
t1=0;
t2=0;
for (i=1; i<=n; i++)
{
cin>>x;
if (x>0)
{
dem1++;
t1+=x;
}
if (x<0)
{
dem2++;
t2+=x;
}
}
cout<<dem1<<" "<<dem2<<endl;
cout<<t1<<" "<<t2;
return 0;
}
uses crt;
var a,b,c:array[1..250]of integer; i,n,dem,dem1,sd,vtd,sa,vta,sdcc,sacc,vtd1,vtc1:integer;
begin
clrscr;
write('Nhap n='); readln(n);
for i:=1 to n do
begin
write('A[',i,']='); readln(a[i]);
end;
dem:=0;
dem1:=0;
for i:=1 to n do
begin
if a[i]>0 then
begin
dem:=dem+1;
b[dem]:=a[i];
end;
if a[i]<0 then
begin
inc(dem1);
c[dem1]:=a[i];
end;
end;
writeln('So duong dau tien trong day la: ',b[1]);
sd:=b[1];
vtd:=n;
for i:=n downto 1 do
if sd=a[i] then
begin
if vtd>i then vtd:=i;
end;
writeln('Chi so cua no la: ',vtd);
writeln('So am dau tien trong day la: ',c[1]);
sa:=c[1];
vta:=n;
for i:=n downto 1 do
if sa=a[i] then
begin
if vta>i then vta:=i;
end;
writeln('Chi so cua no la: ',vta);
writeln('So duong cuoi cung trong day la: ',b[dem]); sdcc:=b[dem];
vtd1:=1;
for i:=1 to n do
if sdcc=a[i] then
begin
if vtd1<i then vtd1:=i;
end;
writeln('Chi so cua no la: ',vtd1);
writeln('So am cuoi cung trong day la: ',c[dem]); sacc:=c[dem];
vtc1:=1;
for i:=1 to n do
if sacc=a[i] then
begin
if vtc1<i then vtc1:=i;
end;
writeln('Chi so cua no la: ',vtc1);
readln;
end.
Program HOC24;
var i,duong,am: byte;
a: array[1..100] of integer;
begin
for i:=1 to 100 do
begin
write('Nhap so thu ',i,' :'); readln(a[i]);
end;
duong:=0; am:=0;
for i:=1 to n do
begin
if a[i]>0 then duong:=duong+1;
if a[i]<0 then am:=am+1;
end;
writeln('Co ',duong,' so nguyen duong');
write('Co ',am,' so nguyen am');
readln
end.
#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>0) and (x%2==0)) dem++;
}
cout<<dem;
return 0;
}
uses crt;
var a:array[1..250]of integer;
n,i,t,dem,dem1:integer;
begin
clrscr;
write('n='); readln(n);
for i:=1 to n do
begin
write('a[',i,']='); readln(a[i]);
end;
t:=0;
for i:=1 to n do
t:=t+a[i];
writeln('Tong=',t);
dem:=0;
dem1:=0;
for i:=1 to n do
begin
if a[i]>0 then dem:=dem+1;
if a[i]<0 then dem1:=dem1+1;
end;
writeln('So luong phan tu duong la: ',dem);
writeln('So luong phan tu am la: ',dem1);
readln;
end.