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Bài 2:
uses crt;
var n,i,t:integer;
begin
clrscr;
readln(n);
t:=0;
for i:=1 to n do
if (i mod 3=0) and (i mod 5=0) then t:=t+i;
writeln(t);
readln;
end.
#include <iostream>
using namespace std;
int main()
{
int a,b;
cout<<"Nhap so a="; cin>>a;
cout<<"Nhap so b="; cin>>b;
cout<<a%b;
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.
uses crt;
var dem,n,m,t:integer;
begin
clrscr;
write('Nhap n='); readln(n);
write('Nhap m='); readln(m);
t:=m+n;
writeln('Trung binh cong cua chung la: ',t/2:4:2);
dem:=0;
if n mod m=0 then inc(dem);
if m mod n=0 then inc(dem);
writeln('Co ',dem,' so la boi so cua so kia');
readln;
end.
uses crt;
var dem,n,m,t:integer;
begin
clrscr;
write('Nhap n='); readln(n);
write('Nhap m='); readln(m);
t:=m+n;
writeln('Trung binh cong cua chung la: ',t/2:4:2);
dem:=0;
if n mod m=0 then inc(dem);
if m mod n=0 then inc(dem);
writeln('Co ',dem,' so la boi so cua so kia');
readln;
end.
Var a,b:Integer;
Begin
Clrscr;
Write(' Nhap a, b');
Read(a,b);
End.
#include <bits/stdc++.h>
using namespace std;
unsigned long long a,b;
//chuongtrinhcon
unsigned long long ucln(long long a,long long b)
{
if (b==0) return(a);
else return(ucln(b,a%b));
}
//chuongtrinhchinh
int main()
{
freopen("vidu.inp","r",stdin);
freopen("vidu.out","w",stdout);
cin>>a>>b;
cout<<ucln(a,b);
return 0;
}
Var a,b,ta,tb,r,ucln,bcnn:integer;
Begin
Write('a = ');readln(a);
Write('b = ');readln(b);
ta:=a;
tb:=b;
Repeat
r:=ta mod tb;
ta:=tb;
tb:=r;
Until r = 0;
ucln:=ta;
bcnn:=a*b div ucln;
Writeln('UCLN(',a,'; ',b,') la ',ucln);
Write('BCNN(',a,'; ',b,' la ',bcnn);
Readln
End.