44 lines
689 B
C++
44 lines
689 B
C++
#include <bits/stdc++.h>
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using namespace std;
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bool isSimple(int num) {
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if (num == 4) {
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// Edge case
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return false;
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}
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int stop = num / 2;
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for (int i = 2; i < stop; i++) {
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if (num % i == 0) {
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return false;
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}
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}
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return true;
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}
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bool sumIsSimple(int num) {
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int sum = 0;
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while (num > 0) {
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sum += num % 10;
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num = num / 10;
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}
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// cout << sum << " " << isSimple(sum) << endl;
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return isSimple(sum);
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}
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int main() {
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int N;
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cin >> N;
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for (int i = 11; i <= N; i += 2) {
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if (isSimple(i) && sumIsSimple(i)) {
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cout << i << endl;
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}
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}
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return 0;
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}
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