#include <stdio.h>
#include <math.h>
long long a[200005];
void sx(long long s[],int n){
for(int i=1;i<=n;++i){
int d=0;
for(int j=1;j<=n-i;++j){
if(s[j]>s[j+1]){
int temp=s[j];
s[j]=s[j+1];
s[j+1]=temp;
}
}
}
}
int main(){
int n;
for(int i
=1;i
<=n
;++i
)scanf("%lld",&a
[i
]); sx(a,n);
int dem=1;
for(int i=1;i<n;++i){
if(a[i]!=a[i+1])dem++;
}
return 0;
}
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