PAT A1120

水题，没什么可说的#include<iostream>#include<stdlib.h>#include<stdio.h>#include<vector>using namespace std;using std::vector;const int maxn=100;bool hashTable[maxn]={false};vector<int> v;int main(){ int n; int num; scanf("%d",&n); for(int i=0;i<n;i++){ int sum=0; scanf("%d",&num); while(num!=0){ sum+=num%10; num/=10; } hashTable[sum]=true; } for(int i=0;i<maxn;i++){ if(hashTable[i]){ v.push_back(i); } } printf("%d\n",v.size()); for(int i=0;i<v.size();i++){ if(i==0) printf("%d",v[i]); else printf(" %d",v[i]); } system(“pause”); return 0;}