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39 lines
641 B
C++
39 lines
641 B
C++
#include <iostream>
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#include <map>
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using std::cin;
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using std::cout;
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const char endl = '\n';
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int n, k;
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std::map<int, int> map;
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int main() {
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std::ios::sync_with_stdio(false);
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cin.tie(nullptr);
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cin >> n >> k;
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for (int i = 1, x; i <= n; i++) {
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cin >> x;
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for (int j = 1; j * j <= x; j++) {
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if (x % j == 0) {
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map[j]++;
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if (j != x / j) map[x / j]++;
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}
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}
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}
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for (auto it = map.rbegin(); it != map.rend(); it++) {
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if (it->second >= k) {
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cout << it->first << endl;
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exit(0);
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}
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}
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return 0;
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}
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