Submission #169357

#	Time	Username	Problem	Language	Result	Execution time	Memory
169357		gabrielpessoa	Political Development (BOI17_politicaldevelopment)	C++14	16 / 100	125 ms	13412 KiB

politicaldevelopment

#include <bits/stdc++.h>
using namespace std;

typedef pair<int, int> ii;

const int ms = 4e5+5;

vector<int> g[ms];

main() {
  cin.tie(0); ios::sync_with_stdio(0);
  int n, k;
  cin >> n >> k;
  for (int i = 0; i < n; i++) {
    int d;
    cin >> d;
    g[i].resize(d);
    for(int j = 0; j < d; j++) {
      cin >> g[i][j];
    }
  }
  int ans = 1;
  for(int i = 0; i < n; i++) {
    if(g[i].size() > 0) ans = max(ans, 2);
    set<int> s;
    for(int j : g[i]) {
      for(int k : g[j]) {
        if(s.count(k)) ans = max(ans, 3);
      }
      s.insert(j);
    }
  }
  cout << ans << '\n';
}

Compilation message (stderr)

politicaldevelopment.cpp:10:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^

• Subtask 1: 4 / 4
• Subtask 2: 12 / 12
• Subtask 3: 0 / 23
• Subtask 4: 0 / 38
• Subtask 5: 0 / 23