CodeForces 492C Vanya and Exams  CodeForces 492C 题目大意：  有一位同学要参加N门科目的考试，每门科目的满分固定，现在这位同学为了拿到奖学金需要达到平均分S，这就需要它在原来的基础上对某些科目的分数进行提升，然后提升每门科目需要做Ai个测试，于是希望能够做尽量少的测试能够使得分数达到平均分。 解题思路：  将所有的科目按照对应的测试数进行排

E. Vanya and Brackets time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vanya is doing his maths homework. He has an

E. Vanya and Brackets time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vanya is doing his maths homework. He has an expre

C. Vanya and Scales time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vanya has a scales for weighing loads and weights of

E. Vanya and Brackets time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output Vanya is doing his maths homework. He has an expre