PATA1074题解

注意去除无效结点

//
//  main.cpp
//  PATA1074
//
//  Created by Phoenix on 2018/2/17.
//  Copyright © 2018年 Phoenix. All rights reserved.
//

#include 
#include 
#include 
using namespace std;
const int maxn = 100010;

struct Node {
    int data;
    int num;
    int next;
    int address;
}node[maxn];

bool cmp1(Node a, Node b) {
    return a.num < b.num;
}

bool cmp2(Node a, Node b) {
    return a.num > b.num;
}

int main(int argc, const char * argv[]) {
    int begin, n, k;
    for(int i = 0; i < maxn; i++) {
        node[i].num = maxn;
    }
    scanf("%d %d %d", &begin, &n, &k);
    for(int i = 0; i < n; i++) {
        int add;
        scanf("%d", &add);
        node[add].address = add;
        scanf("%d %d", &node[add].data, &node[add].next);
    }
    int num = 0;
    while(begin != -1) {
        node[begin].num = num++;
        begin = node[begin].next;
    }
    sort(node, node + maxn, cmp1);
    for(int i = 0; i < num / k; i++) {
        sort(node + i * k, node + i * k + k, cmp2);
    }
    for(int i = 0; i < num - 1; i++) {
        printf("%05d %d %05d\n", node[i].address, node[i].data, node[i + 1].address);
    }
    printf("%05d %d -1\n", node[num - 1].address, node[num - 1].data);
    return 0;
}