22 lines
429 B
C++
22 lines
429 B
C++
#include <bits/stdc++.h>
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using namespace std;
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int pageCount(int n, int p) {
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if (p == 1 || p == n) return 0;
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if (n % 2 == 0 && p == n-1) return 1;
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else if (n % 2 != 0 && p == n-1) return 0;
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// ascending order first
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int ascending = p / 2;
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// descending order
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int descending = std::ceil((double)(n-p) / 2);
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return (ascending < descending)? ascending : descending;
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}
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int main() {
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cout << pageCount(6, 5);
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return 0;
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}
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