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  1. #include <cmath>
  2. #include <iostream>
  3. using namespace std;
  4. int main(){
  5. 	int N, L, R;
  6. 	cin >> N >> L >> R;
  7. 	cout << N / 2 - ((L <= N && R >= L && R > 0) || (R <= N && L > R && L > 0) ? round((!(L == R && L % 2) + (R = max(min(R -= R % 2, N), L = min(max(L += (L > R ? L ^= R ^= L ^= R : L) % 2, 1), N))) - L) / 2.) : 0);
  8. 	return 0;
  9. }
Success #stdin #stdout 0s 4352KB
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10 4 -1
stdout
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3
https://ideone.com/xasRDD
language:
C++ (gcc 8.3)
created:
4 years ago
visibility:
public

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