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- #include <iostream>
- using namespace std;
- int main() {
- int n, k;
- cin >> n >> k;
- if (n <= k) {
- cout << 2;
- } else {
- if ((n * 2) % k == 0) {
- cout << n * 2 / k;
- } else {
- cout << n * 2 / k + 1;
- }
- }
- return 0;
- }
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