PAT 1120

#include<cstdio>#include<cstring>#include<string>#include<algorithm>#include<vector>#include<set>using namespace std;int change(int a){	int temp,sum=0;	while(a!=0)	{		temp=a%10;		a=a/10;		sum=sum+temp;	}	return sum;}set<int> s;int main(){	int n;	scanf("%d",&n);	int temp;	for(int i=0;i<n;i++)	{		scanf("%d",&temp);		s.insert(change(temp));	}	PRintf("%d/n",s.size());		int num=0;	for(set<int>::iterator it=s.begin();it!=s.end();it++)	{		if(it!=s.begin())			printf(" ");		printf("%d",*it);		}	system("pause");	return 0;}