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- #include <iostream>
- #include <set>
- using namespace std;
- int main() {
- set<int> st;
- st.insert(5);
- st.insert(4);
- st.insert(9);
- st.insert(5);
- for(set<int>::iterator it = st.begin(); it != st.end(); it++) {
- cout << *it << " ";
- }
- cout << endl;
- for(int x: st) {
- cout << x << " " ;
- }
- cout << endl;
- return 0;
- }
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