Alen 2016-11-30 02:29:44
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#include <iostream>
using namespace std;
int main(){
int N,i,j,b,change,a[100];
cin>>N;
b=N;
for(i=0;i<N;i++){
cin>>a[i];
}
for(i=0;i<N;i++){
for(j=i+1;j<N;j++){
if(a[i]>a[j]){
change=a[j];a[j]=a[i];a[i]=change;
}
}
}
for(i=0;i<N-1;i++){
if(a[i]==a[i+1])b=b-1;
}
cout<<b;
cout<<endl;
cout<<a[0];
cout<<" ";
for(i=1;i<N;i++){
if(a[i]!=a[i-1]){
cout<<a[i];
cout<<" ";
}
}
return 0;
}