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OI-codes/Luogu/P4325/P4325.cpp

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#include <bits/stdc++.h>
using namespace std;
int main() {
int t;
set<int> s;
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for (int i = 0; i < 10; i++) {
cin >> t;
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s.insert(t % 42);
}
cout << s.size() << endl;
return 0;
}