(3 points) suppose that we have a sequence a1, a2, . . , an that we wish to memorize. we memorize it by computing partial sums of the forms ai + . . + aj . let us say that the cost of memorizing a particular integer a is |a|. the goal is to use the minimum cost to remember the partial sums so that we can reconstruct the original sequence. for example, if (a1, a2, a3, a4) = (1, −3, 2, 4), one of the possible solution is to memorize: • a1 = 1 • a2 + a3 = −1 • a2 + a3 + a4 = 3 • a3 = 2 the total cost is |1| + | − 1| + |3| + |2| = 7, and a1, a2, a3, a4 can be reconstructed by using gaussian elimination from the information memorized. note that the minimum cost to memorize the sequence above is 6. give an algorithm that computes the minimum cost to memorize a sequence a1, a2, . . , an. the running time of the algorithm should be polynomial in n. (hint:

Consider the following statements: #include #include class temporary { private: string description; double first; double second; public: temporary(string = "", double = 0.0, double = 0.0); void set(string, double, double); double manipulate(); void get(string& , double& , double& ); void setdescription(string); void setfirst(double); void setsecond(double); }; write the definition of the member function set() so that the instance variables are set according to the parameters. write the definition of the constructor so that it initializes the instance variables using the function set() write the definition of the member function manipulate() that returns a decimal number (double) as follows: if the value of description is "rectangle", it returns first * second if the value of description is "circle" it returns the area of a circle with radius first if the value of description is "cylinder" it returns the volume of a cylinder with radius first and height second. hint: the volume of a cylinder is simply the area of the circle at the base times the height. if the value of description is "sphere" it returns the volume of the sphere with radius first. otherwise it returns -1.0;

How do we use the sumif formula (when dealing with different formats) ?

Visualizing a game of “tag” to remember the meaning of contagious