classOperation{//运算类基类protected:float numA =0;float numB =0;public:voidsetnumA(float paramA){numA = paramA;}voidsetnumB(float paramB){numB = paramB;}virtualfloatgetResult(){float result =0;return result;}};classOperationAdd:publicOperation{//加法类派生类public:floatgetResult(){float result =0;result = numA + numB;return result;}};classOperationSub:publicOperation{//派生减法类public:floatgetResult(){float result =0;result = numA - numB;return result;}};classOperationMul:publicOperation{//派生乘法类public:floatgetResult(){float result =0;result = numA * numB;return result;}};classOperationDiv:publicOperation{//派生除法类public:floatgetResult(){float result =0;result = numA / numB;return result;}};
一、01背包问题 图解详细解析 (转载) https://blog.csdn.net/qq_37767455/article/details/99086678
:Vi表示第 i 个物品的价值,Wi表示第 i 个物品的体积,定义V(i,j):当前背包容量 j,前 i 个物…