#include <iostream> #include <set> using namespace std; int main() { int n; while(cin>>n) { set<int>s; while(n) { int temp = n%10; if(s.find(temp)==s.end()) { cout<<temp; } n/=10; s.insert(temp); } cout<<endl; } }
#include <iostream> #include <set> using namespace std; int main() { int n; while(cin>>n) { set<int>s; while(n) { int temp = n%10; if(s.find(temp)==s.end()) { cout<<temp; } n/=10; s.insert(temp); } cout<<endl; } }