// 正确答案 istream_iterator<int> str_in(cin); istream_iterator<int> end; vector<int> vec(str_in, end); sort(vec.begin(),vec.end()); unique_copy(vec.begin(), vec.end(), ostream_iterator<int>(cout, " "));
// 正确答案
istream_iterator str_in(cin);
istream_iterator end;
vector vec(str_in, end);
sort(vec.begin(),vec.end());
unique_copy(vec.begin(), vec.end(), ostream_iterator(cout, " "));