oj.uz

Submission #1085139

# Submission time Handle Problem Language Result Execution time Memory
1085139 2024-09-07T15:19:50 Z fryingduc Sirni (COCI17_sirni) C++17
84 / 140
 1028 ms 786432 KB 
#include "bits/stdc++.h"
using namespace std;

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

const int maxn = 2e5 + 5;
const int N = 1e7 + 15;
int n;
vector<int> value[N];

int lab[maxn];
int nxt[N];

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;
}
struct edge {
  int u, v, w;
  bool operator<(const edge &o) {
    return (w != o.w ? w < o.w : u < o.u);
  }
};
vector<edge> e;
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);
    nxt[x] = x;
  }
  sort(a.begin(), a.end());
  a.erase(unique(a.begin(), a.end()), a.end());
  for(int i = a.back() - 1; i >= 0; --i) {
    if(!nxt[i]) 
      nxt[i] = nxt[i + 1];
    else {
      for(int j = 1; j < (int)value[i].size(); ++j) {
        is_joined(value[i][0], value[i][j]);
      }
    }
  }
  for(int i = 1; i < (int)a.size(); ++i) {
    if(value[a[i]].size() and value[a[i - 1]].size()) 
      e.push_back({value[a[i]][0], value[a[i - 1]][0], a[i] % a[i - 1]});
  }
  for(int i = 0; i < (int)a.size(); ++i) {
    if(value[a[i]].empty()) continue;
    for(int j = a[i] * 2; j <= a.back(); j += a[i]) {
      int val = nxt[j];
      if(value[val].empty()) continue;
      int pos = value[val][0];
      if(pos != value[a[i]][0])
        e.push_back({value[a[i]][0], pos, (val % a[i])});
    }
  }
  sort(e.begin(), e.end());
  long long ans = 0;
  for(auto i:e) {
    if(!is_joined(i.u, i.v)) {
      ans += i.w;
    }
  }
  cout << ans;
}
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  solve();

  return 0;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 143 ms 274512 KB Output is correct
2 Correct 308 ms 323596 KB Output is correct
3 Correct 121 ms 274708 KB Output is correct

Subtask #2
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 235508 KB Output is correct
2 Runtime error 694 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 115 ms 274512 KB Output is correct
2 Correct 115 ms 274256 KB Output is correct
3 Correct 123 ms 274588 KB Output is correct

Subtask #4
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 250 ms 268844 KB Output is correct
2 Correct 576 ms 292868 KB Output is correct
3 Correct 321 ms 292660 KB Output is correct

Subtask #5
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 122 ms 242884 KB Output is correct
2 Correct 400 ms 290860 KB Output is correct
3 Correct 271 ms 266032 KB Output is correct

Subtask #6
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 383 ms 293148 KB Output is correct
2 Correct 701 ms 342312 KB Output is correct
3 Correct 284 ms 268596 KB Output is correct

Subtask #7
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 243836 KB Output is correct
2 Correct 776 ms 341748 KB Output is correct
3 Correct 304 ms 268212 KB Output is correct

Subtask #8
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 335 ms 304108 KB Output is correct
2 Runtime error 1028 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #9
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 360 ms 303924 KB Output is correct
2 Runtime error 915 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #10
0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 152 ms 278468 KB Output is correct
2 Runtime error 994 ms 786432 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -