Submission #74239

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
74239	2018-08-30 14:24:01	admin	낙하산 고리들 (IOI12_rings)	C++17	100 / 100	2079 ms	42560 KiB

rings

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#pragma GCC optimize("Ofast")
#include "bits/stdc++.h"
using namespace std;
int N;
struct dsu {
  int other[1000010];
  int len[1000010];
  int cycle_cnt;
  int cycle_sum;
  bool bad;
  int no_of_nodes;
  int del_node;
 
  void init (int n) {
    no_of_nodes = n;
    del_node = -1;
    for(int i = 0; i < no_of_nodes; i++) {
      other[i] = i;
      len[i] = 1;
    }
    cycle_cnt = 0;
    cycle_sum = 0;
    bad = false;
  }
  void add(int x, int y) {
    if(del_node == x || del_node == y) return ; 
    if(bad) return ;
    if(other[x] == y) {
      other[x] = -1;
 
 
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• Subtask 1: 20 / 20
• Subtask 2: 17 / 17
• Subtask 3: 18 / 18
• Subtask 4: 14 / 14
• Subtask 5: 31 / 31