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11 lines
162 B
C++
11 lines
162 B
C++
#include <bits/stdc++.h>
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using namespace std;
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int main() {
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int n, k, ans = 0;
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cin >> n >> k;
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cout << n + (n - 1) / (k - 1) << endl;
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return 0;
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}
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