Submission #1085112

#	Time	Username	Problem	Language	Result	Execution time	Memory
1085112		fryingduc	Sirni (COCI17_sirni)	C++17	140 / 140	2939 ms	239952 KiB

sirni

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

#ifdef duc_debug
#include "bits/debug.h"
#else 
#define debug(...)     
#endif

const int maxn = 1e5 + 5;
const int N = 1e7 + 7;
int n;
vector<int> value[N];

int lab[maxn];

int find(int u) {
  return lab[u] < 0 ? u : lab[u] = find(lab[u]);
}
bool is_joined(int u, int v) {
  u = find(u), v = find(v);
  if(u == v) return 1;
  if(lab[u] > lab[v]) swap(u, v);
  lab[u] += lab[v];
  lab[v] = u;
  return 0;
}
void solve() {
  cin >> n;
  vector<int> a;
  for(int i = 1; i <= n; ++i) {
    int x; cin >> x;
    a.push_back(x);
    lab[i] = -1;
    value[x].push_back(i);
  }
  sort(a.begin(), a.end());
  a.erase(unique(a.begin(), a.end()), a.end());
  int rem = 0;
  long long ans = 0;
  while(1) {
    for(int i = 0; i < (int)a.size(); ++i) {
      for(int j = a[i] + rem; j <= a.back(); j += a[i]) {
        if(value[j].empty()) continue;
        for(auto pos:value[j]) {
          if(!is_joined(value[a[i]][0], pos)) {
            // debug(value[a[i]][0], pos, a[i], j);
            ans += rem;
          }
        }
      }
    }
    bool flag = 1;
    for(int i = 2; i <= n; ++i) {
      if(find(i) != find(1)) {
        flag = 0;
        break;
      }
    }
    if(flag) {
      cout << ans;
      return;
    }
    ++rem;
  }
}
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  solve();

  return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 14 / 14
• Subtask 4: 14 / 14
• Subtask 5: 14 / 14
• Subtask 6: 14 / 14
• Subtask 7: 14 / 14
• Subtask 8: 14 / 14
• Subtask 9: 14 / 14
• Subtask 10: 14 / 14