สแตกที่รู้ค่าน้อยสุด

อินพุต:
std::vector<std::string> operations = {"push 5", "push 3", "min", "pop", "min"};

ผลลัพธ์ที่คาดหวัง:
std::vector<long long> expected = {3, 5};

อินพุต:
string[] operations = new string[] {"push 5", "push 3", "min", "pop", "min"};

ผลลัพธ์ที่คาดหวัง:
long[] expected = new long[] {3, 5};

อินพุต:
std::vector<std::string> operations = {"min", "pop", "push 7", "min"};

ผลลัพธ์ที่คาดหวัง:
std::vector<long long> expected = {-1, 7};

อินพุต:
string[] operations = new string[] {"min", "pop", "push 7", "min"};

ผลลัพธ์ที่คาดหวัง:
long[] expected = new long[] {-1, 7};