第一题(多条件排序):2084. enjoy cp!!!
一、题目 2084 - enjoy cp!!! - acm.bjtu 二、答案 #include<bits/stdc.h> using namespace std;struct Student{int id;int num;int time; };bool cmp(Student a,Student b){if(a.num ! b.num)return a.num > b.num;if(a.time ! b.time)return a.time < b.time;…