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#include <iostream>
#include <map>
using namespace std;
int main() {
int n;
cin >> n;
map<int, int> count;
for (int i = 0; i < n; i++) {
int x;
cin >> x;
count[x]++;
}
int ans = 0;
for (auto p : count) {
int x = p.second;
ans += (x * (x - 1)) / 2;
}
cout << ans;
return 0;
}
uses crt;
var a:array[1..50]of int64;
i,n,t,max,min:int64;
begin
clrscr;
readln(n);
for i:=1 to n do
readln(a[i]);
max:=a[1];
min:=a[1];
t:=0;
for i:=1 to n do
begin
if max<a[i] then max:=a[i];
if min>a[i] then min:=a[i];
t:=t+a[i];
end;
writeln('Tong la: ',t);
writeln('So lon nhat la: ',max);
write('Vi tri la: ');
for i:=1 to n do
if a[i]=max then write(i:4);
writeln;
writeln('So nho nhat la: ',min);
write('Vi tri la: ');
for i:=1 to n do
if a[i]=min then write(i:4);
readln;
end.
#include <bits/stdc++.h>
using namespace std;
long long a[100],n,i,ln,nn,vt1,vt2;
int main()
{
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
ln=a[1];
nn=a[1];
for (i=1; i<=n; i++)
{
ln=max(ln,a[i]);
nn=min(nn,a[i]);
}
cout<<ln<<" "<<nn;
return 0;
}
Var n,i,vtl,vtn,so max,min:integer;
Begin
Write('Nhap so luong so = ');readln(n);
vtl:=0;
vtn:=0;
max:=-32768;
min:=32767;
For i:=1 to n do
Begin
Write('Nhap vao so thu ',i);readln(so);
If so > max then
Begin
Max:=so;
vtl:=i;
End;
If so < min then
Begin
Min:=so;
vtn:=i;
End;
Writeln('So lon nhat la ',max,' tai vi tri thu ',i);
Write('So nho nhat la ',min,' tai vi tri thu ',i);
Readln;
End.
#include <bits/stdc++.h>
using namespace std;
long long a[1000],n,i;
int main()
{
freopen("dayd.inp","r",stdin);
freopen("dayd.out","w",stdout);
cin>>n;
for (i=1; i<=n; i++) cin>>a[i];
for (i=1; i<=n; i++)
if (a[i]>0) cout<<a[i]<<" ";
return 0;
}
const fi='daycontd.inp';
fo='daycontd.out';
var a:array[1..100]of integer;
n,i,dn,dem:integer;
f1,f2:text;
begin
assign(f1,fi); reset(f1);
assign(f2,fo); rewrite(f2);
readln(f1,n);
for i:=1 to n do
read(f1,a[i]);
{---------------------------xu-ly-------------------------}
dn:=0;
dem:=1;
for i:=1 to n-1 do
if a[i+1]>a[i] then
begin
inc(dem);
if i+1=n then
begin
if dn<dem then
begin
dn:=dem;
end
else if (dn=dem) then
begin
dn:=dem;
end;
end;
end
else if a[i+1]<a[i] then
begin
if dn<dem then
begin
dn:=dem;
end
else if (dn=dem) then
begin
dn:=dem;
end;
dem:=1;
end;
writeln(f2,'do dai cua doan dai nhat la: ',dn);
close(f1);
close(f2);
end.