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#include <bits/stdc++.h>
using namespace std;
long long a,b,k,x,y,dem=0;
int main()
{
cin>>a>>b>>k;
for (x=1; x<=k; x++)
{
for (y=1; y<=k; y++)
{
if (a<=x*x && a<=b && a<=y*y*y && a<=b) dem++;
}
}
cout<<dem;
return 0;
}
Bài 1:
uses crt;
var n,d,t,x,y,j,kt,i,t1,dem:integer;
st:string;
a:array[1..255]of integer;
begin
clrscr;
write('n='); readln(n);
if (0<n) and (n<1000) then
begin
{------------------------dong-1---------------------------}
str(n,st);
d:=length(st);
t:=0;
for i:=1 to d do
begin
val(st[i],x,y);
t:=t+x;
end;
writeln('tong cac chu so cua ',n,' la: ',t);
{----------------------dong-2----------------------------}
writeln('cac so nguyen to nho hon tong cac chu so cua ',n,' la: ');
dem:=0;
for i:=2 to t-1 do
begin
kt:=0;
for j:=2 to i-1 do
if i mod j=0 then kt:=1;
if kt=0 then
begin
write(i:4);
dem:=dem+1;
a[dem]:=i;
end;
end;
{----------------dong-3---------------------------}
writeln;
t1:=0;
for i:=1 to dem do
t1:=t1+a[i];
writeln('tong cac so nguyen to trong dong 2 la: ',t1);
end
else writeln('vui long nhap lai');
readln;
end.
Bài 2:
uses crt;
var a,b,i,dem,j,kt:integer;
c:array[1..100]of integer;
begin
clrscr;
write('a='); readln(a);
write('b='); readln(b);
if (20<=a) and (a<=50) and (30<=b) and (b<=75) then
begin
{------------------------dong-1--------------------------}
writeln('cac so co 2 chu so chia het cho 9 la:');
for i:=10 to 99 do
if i mod 9=0 then write(i:4);
{-----------------------dong-2--------------------------}
writeln;
writeln('cac so chinh phuong lon hon ',a,' va nho hon ',b,' la: ');
for i:=a+1 to b-1 do
if trunc(sqrt(i))=sqrt(i) then write(i:4);
{-----------------------dong-3---------------------------}
writeln;
dem:=0;
for i:=2 to b do
begin
kt:=0;
for j:=2 to i-1 do
if i mod j=0 then kt:=1;
if kt=0 then
begin
inc(dem);
c[dem]:=i;
end;
end;
writeln('so nguyen to lon nhat nho hon ',b,' la: ',c[dem]);
end
else writeln('vui long nhap lai');
readln;
end.
Bài 3:
uses crt;
var n,d,t,i,x,y:integer;
st:string;
begin
clrscr;
write('n='); readln(n);
if (0<n) and (n<105) then
begin
{---------------------------dong-1---------------------------}
str(n,st);
d:=length(st);
writeln('so luong cac chu so cua ',n,' la: ',d);
{---------------------------dong-2--------------------------}
t:=0;
for i:=1 to d do
begin
val(st[i],x,y);
t:=t+x;
end;
writeln('tong cac chu so cua ',n,' la: ',t);
{---------------------------dong-3------------------------}
writeln('phan so toi gian cua ',n,' la: 1/',n);
write('so dao nguoc cua ',n,' la: ');
for i:=d downto 1 do
write(st[i]);
end
else writeln('vui long nhap lai');
readln;
end.
Câu 1:
Program hotrotinhoc;
var i,tog,n: integer;
function tong(x: integer): integer;
var k,t: longint;
begin
t:=0;
while x<>0 do
begin
k:=x mod 10;
t:=t+k;
x:=x div 10;
end;
tong:=t;
end;
function nt(a: integer): boolean;
var j: integer;
begin
nt:=true;
if (a=2) or (a=3) then exit;
nt:=false;
if (a=1) or (a mod 2=0) or (a mod 3=0) then exit;
j:=5;
while (j<=trunc(sqrt(a))) do
begin
if (a mod j=0) or (a mod (j+2)=0) then exit;
j:=j+6;
end;
nt:=true;
end;
begin
write('Nhap so nguyen N :'); readln(n);
writeln('Tong cac chu so cua N la :',tong(n));
write('Cac so nguyen to nho hon tong cac chu so cua N la :');
for i:=1 to tong(n) do if nt(i) then
begin
write(i,' ');
tog:=tog+i;
end;
writeln;
write('Tong cac so nguyen to trong dong 2 la :',tog);
readln
end.
uses crt;
var n,i,o,d:integer;
function ktnt(n:integer): integer;
var i,d:integer;
begin
d:=0;
for i:=1 to sqrt(n) do
if (n mod i=0) then d:=d+1;
if d=2 then ktnt=0
else ktnt=1;
end;
begin
readln(n);
writeln(' so nguyen to be hon hoac bang n la'); {a}
for i:=1 to n do
if ktnt(i)=0 then writeln(i);
writeln('so nguyen to nho nhat khong be hon n');
o:=n;
while o>0 do
begin
if ktnt(o)=0 then
begin
write(o);
break;
end;
o:=o+1;
end;
writeln('cặp số nguyên tố là hai số nguyên lẻ liên tiếp nhỏ hơn hoặc bằng n');
o:=0;
o:=1;
d:=0;
for i:=o+2 to n do
begin
if ktnt(i)=0 then
begin
d:=d+1;
write(i,' ');
if d<2 then continue;
end;
d:=0;
writeln;
end;
readln;
end.
uses crt;
var a:array[1..100]of integer;
i,n,k,t:integer;
begin
clrscr;
readln(n,k);
for i:=1 to n do readln(a[i]);
t:=0;
for i:=1 to n do
if a[i] mod k=0 then t:=t+a[i];
writeln(t);
readln;
end.
Bài 1:
uses crt;
var n,i,dem,maxd,vt,vt1,vt2,vt3,maxa,dem1:integer;
a,b,c,d,e,f,g:array[1..100]of integer;
mind,mina:int64;
begin
clrscr;
repeat
write('n='); readln(n);
if (n<=0) or (n>100) then writeln('nhap lai');
until (0<n) and (n<=100);
for i:=1 to n do
begin
write('a[',i,']='); readln(a[i]);
end;
{--------------------------so-hang-duong-----------------------}
dem:=0;
for i:=1 to n do
if a[i]>0 then
begin
inc(dem);
b[dem]:=a[i];
end;
maxd:=0;
for i:=1 to dem do
if maxd<b[i] then maxd:=b[i];
vt:=0;
for i:=1 to n do
if maxd=a[i] then
begin
vt:=vt+1;
c[vt]:=i;
end;
writeln('so hang duong lon nhat cua day la: ',maxd);
writeln('vi tri cua no lan luot la: ');
for i:=1 to vt do
write(c[i]:4);
writeln;
mind:=maxint;
for i:=1 to dem do
if mind>b[i] then mind:=b[i];
vt1:=0;
for i:=1 to n do
if mind=a[i] then
begin
inc(vt1);
d[vt1]:=i;
end;
writeln('so hang duong nho nhat cua day la: ',mind);
writeln('vi tri cua no lan luot la: ');
for i:=1 to vt1 do
write(d[i]:4);
{------------------------so-hang-am--------------------------}
writeln;
dem1:=0;
for i:=1 to n do
if a[i]<0 then
begin
inc(dem1);
e[dem1]:=a[i];
end;
maxa:=e[1];
for i:=1 to dem1 do
if maxa<e[i] then maxa:=e[i];
vt2:=0;
for i:=1 to n do
if maxa=a[i] then
begin
inc(vt2);
f[vt2]:=i;
end;
writeln('so hang am lon nhat cua day la: ',maxa);
writeln('vi tri cua no lan luot la: ');
for i:=1 to vt2 do
write(f[i]:4);
writeln;
mina:=maxint;
for i:=1 to dem1 do
if mina>e[i] then mina:=e[i];
vt3:=0;
for i:=1 to n do
if mina=a[i] then
begin
inc(vt3);
g[vt3]:=i;
end;
writeln('so hang am nho nhat cua day la: ',mina);
writeln('vi tri cua no lan luot la: ');
for i:=1 to vt3 do
write(g[i]:4);
readln;
end.
Bài 2:
uses crt;
var a,vt:array[1..10]of integer;
i,x,dem:integer;
begin
clrscr;
for i:=1 to 10 do
begin
write('a[',i,']='); readln(a[i]);
end;
write('nhap x='); readln(x);
dem:=0;
for i:=1 to 10 do
if a[i]=x then
begin
inc(dem);
vt[dem]:=i;
end;
if dem=0 then writeln('khong co gia tri ',x,' trong day')
else
begin
writeln('vi tri cua ',x,' trong day lan luot la:');
for i:=1 to dem do
write(vt[i]:4);
end;
readln;
end.
Bài 3:
uses crt;
var a:array[1..100,1..100]of integer;
n,i,j,t:integer;
begin
clrscr;
write('n='); readln(n);
for i:=1 to n do
for j:=1 to n do
begin
write('a[',i,',',j,']='); readln(a[i,j]);
end;
{----------------------------xuat-----------------------------}
writeln('ma tran ban vua nhap la:');
for i:=1 to n do
begin
for j:=1 to n do
write(a[i,j]:4);
writeln;
end;
{------------------tong-cac-phan-tu-tren-duong-cheo-chinh------------------}
t:=0;
for i:=1 to n do
for j:=1 to n do
if i=j then t:=t+a[i,j];
writeln('tong cac phan tu tren duong cheo chinh la: ',t);
readln;
end.
uses crt;
var a,b,k,dem,x,y:longint;
begin
clrscr;
readln(a,b,k);
dem:=0;
for x:=1 to k do
for y:=1 to k do
if ((a<=b) and (a<=x*x) and (a<=y*y*y)) then dem:=dem+1;
writeln(dem);
readln;
end.