// C++ program to illustrate
// size() function on set
#include <bits/stdc++.h>
using namespace std;
int main()
{
// Take any two sets
set<char> set1, set2;
for (int i = 0; i < 4; i++) {
set1.insert('a' + i);
}
set1.insert('a');
// Printing the size of sets
cout << "set1 size: " << set1.size();
cout << endl;
cout << "set2 size: " << set2.size();
return 0;
}
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