Submission #621470

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
621470	2022-08-03 20:49:08	penguinhacker	Keys (IOI21_keys)	C++17	100 / 100	1333 ms	58092 KiB

keys

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#include <bits/stdc++.h>
using namespace std;
#define ar array
const int mxN=3e5;
int n, m, sz[mxN], p[mxN];
vector<ar<int, 2>> adj[mxN];
bool dead[mxN], vis[mxN], has_key[mxN];
vector<int> by_color[mxN];
int find(int i) {
  return i^p[i]?p[i]=find(p[i]):i;
}
vector<int> find_reachable(vector<int> r, vector<int> u, vector<int> v, vector<int> c) {
  int n=r.size(), m=u.size();
  for (int i=0; i<m; ++i) {
    adj[u[i]].push_back({v[i], c[i]});
    adj[v[i]].push_back({u[i], c[i]});
  }
  memset(sz, 0x3f, sizeof(sz));
  iota(p, p+n, 0);
  while(count(dead, dead+n, 0)) {
    vector<ar<int, 2>> todo;
    for (int i=0; i<n; ++i) {
      if (dead[i])
        continue;
      vector<int> cmp(1, i);
      vis[i]=1;
 
 
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Compilation message (stderr)

keys.cpp: In function 'std::vector<int> find_reachable(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
keys.cpp:32:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   32 |    for (int j=0; j<cmp.size()&&found==-1; ++j) {
      |                  ~^~~~~~~~~~~

• Subtask 1: 9 / 9
• Subtask 2: 11 / 11
• Subtask 3: 17 / 17
• Subtask 4: 30 / 30
• Subtask 5: 33 / 33