*B1055 集体照

题目：https://pintia.cn/problem-sets/994805260223102976/problems/994805272021680128
这题有点麻烦的
核心代码是第37和41行，涉及到3个变量，每隔两个赋值

代码

#include<cstdio>
#include<string>
#include<vector>
#include<iostream>
#include<algorithm>
using namespace std;
const int maxn = 10010;
struct student{
    string name;
    int height;
};
vector<student> stu_vec;
bool cmp(student a, student b){
    if(a.height!=b.height) return a.height>b.height;
    else return a.name<b.name;
}
int main(){
    int n, k, m;
    scanf("%d %d", &n, &k);
    stu_vec.resize(n);
    for(int i = 0; i < n ; i++){
        cin>>stu_vec[i].name>>stu_vec[i].height;
    }
    sort(stu_vec.begin(), stu_vec.end(), cmp);
    //最后一排
    int row = k, t = 0;
    while(row > 0){
        if(row == k){
            m =  n - (n / k) * (k - 1);
        } else m = n / k ;
        vector<string> ans(m);
        int mid = m / 2;
        ans[mid] = stu_vec[t].name;
        int j = mid + 1;
        for(int i = t + 2; i < t + m; i += 2){
            ans[j++] = stu_vec[i].name;
        }
        j = mid - 1;
        for(int i = t + 1; i < t + m; i += 2){
            ans[j--] = stu_vec[i].name;
        }
        cout << ans[0];
        for(int i = 1; i < ans.size(); i++) cout<<" " + ans[i];
        cout << endl;
        t += m;
        row--;
    }
    return 0;
}