Submission #105091

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
105091	2019-04-10 14:19:02	eriksuenderhauf	Parachute rings (IOI12_rings)	C++11	100 / 100	1781 ms	110044 KiB

rings

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//#pragma GCC optimize("O3")
#include <bits/stdc++.h>
//#include "grader.h"
#define pii pair<int,int>
#define vi vector<int>
#define vii vector<pii>
#define pb push_back
using namespace std;
const int MAXN = 1e6 + 5;
int par[MAXN], deg[MAXN], cycle = 0, cnt[MAXN], n = 0;
int mrk[MAXN];
vi cand, adj[MAXN];
struct DSU {
  int par[MAXN], deg[MAXN], root = 0;
  bool valid = true;
  int qry(int x) {
    if (!valid) return 0;
    return x == par[x] ? x : par[x] = qry(par[x]);
  }
  void join(int u, int v) {
    if (!valid) return;
    u = qry(u), v = qry(v);
    par[u] = v;
  }
  void init(int n) {
    for (int i = 0; i < n; i++)
      par[i] = i;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

rings.cpp: In function 'void Link(int, int)':
rings.cpp:174:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i = 0; i < edg.size(); i++) {
                    ~~^~~~~~~~~~~~
rings.cpp:188:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i = 0; e.valid && i < edg.size(); i++) {
                               ~~^~~~~~~~~~~~
rings.cpp:199:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i = 0; f.valid && i < edg.size(); i++) {
                               ~~^~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 17 / 17
• Subtask 3: 18 / 18
• Subtask 4: 14 / 14
• Subtask 5: 31 / 31