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    @ 2025-7-4 19:15:03

    #include using namespace std;

    int main() { long long x, y; cin >> x >> y; cout << y / 2 - x; //兔 cout << x - (y / 2 - x); //鸡 return 0; } 包ac不了的

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    ID
    543
    Time
    1000ms
    Memory
    256MiB
    Difficulty
    10
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