oj.uz

답안 #383075

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
383075 2021-03-28T19:22:57 Z Hegdahl Relay Marathon (NOI20_relaymarathon) C++17
17 / 100
 6000 ms 516680 KB 
#pragma GCC optimize("Ofast")
#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

#ifdef ENABLE_DEBUG
#include <debug.h>
#else
#define DEBUG(...) do {} while (0)
#endif

using namespace std;
using namespace __gnu_pbds;

using ll = long long;
using ull = unsigned long long;
using lll = __int128;
using ulll = unsigned __int128;

using ld = long double;

template<typename T, size_t N> using ar = array<T, N>;

template<typename T, typename Cmp = less<T>>
using iset = tree<T, null_type, Cmp, rb_tree_tag,
		  tree_order_statistics_node_update, allocator<T>>;

#define REPSI(name, start, stop, step) for (ll name = start; name < (ll)stop; name += step)
#define REPS(name, start, stop) REPSI(name, start, stop, 1)
#define REP(name, stop) REPS(name, 0, stop)

#define RREPSI(name, start, stop, step) for (ll name = stop-1; name >= (ll)start; name -= step)
#define RREPS(name, start, stop) RREPSI(name, start, stop, 1)
#define RREP(name, stop) RREPS(name, 0, stop)

template<typename T> void cins(T &first) { cin >> first; }
template<typename T, typename... Ts> void cins(T &first, T &second, Ts&... rest) {
  cin >> first;
  cins(second, rest...);
}

#define GET(type, ...) type __VA_ARGS__; cins(__VA_ARGS__)
#define GETI(...) GET(int, __VA_ARGS__)
#define GETLL(...) GET(ll, __VA_ARGS__)
#define GETS(...) GET(string, __VA_ARGS__)
#define GETD(...) GET(double, __VA_ARGS__)
#define GETC(...) GET(char, __VA_ARGS__)

struct hsh {
  size_t operator()(uint64_t x) const {
    static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
    x += FIXED_RANDOM;
    x += 0x9e3779b97f4a7c15;
    x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
    x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
    return x ^ (x >> 31);
  }
};

const ll mxN = 1e5;

vector<ar<ll, 2>> g[mxN];

int main() {
  ios::sync_with_stdio(0);cin.tie(0);

  GETI(n, m, k);
  REP(mm, m) {
    GETI(i, j, w); --i, --j;
    g[i].push_back({j, w});
    g[j].push_back({i, w});
  }
  vector<ll> a(k);
  REP(i, k) cin >> a[i], --a[i];

  vector<bool> special(n);
  for (ll x : a) special[x] = true;

  vector<ll> vis_cnt(n);
  vector<ar<ll, 3>> vis(n, {-1, -1, -1}), dist(n, {-1, -1, -1});

  priority_queue<ar<ll, 3>, vector<ar<ll, 3>>, greater<ar<ll, 3>>> pq;
  for (ll x : a) pq.push({0, x, x});

  while (pq.size()) {
    auto [dhere, cur, source] = pq.top();
    pq.pop();

    if (vis_cnt[cur]==3) continue;

    DEBUG(cur);
    DEBUG(vis_cnt[cur]);
    DEBUG(vis[cur]);
    DEBUG(dist[cur]);

    bool ok = true;
    REP(p, vis_cnt[cur]) if (vis[cur][p] == source) ok = false;
    if (!ok) continue;

    vis[cur][vis_cnt[cur]] = source;
    dist[cur][vis_cnt[cur]] = dhere;
    ++vis_cnt[cur];

    for (auto [nxt, w] : g[cur]) {
      if (vis_cnt[nxt] == 3) continue;
      bool ok = true;
      REP(p, vis_cnt[nxt]) if (vis[nxt][p] == source) ok = false;
      if (!ok) continue;

      pq.push({dhere+w, nxt, source});
    }
  }

  vector<ar<ll, 3>> pairs;
  REP(i, n)
    if (special[i])
      REP(p, vis_cnt[i])
        if (vis[i][p] != i) pairs.push_back({dist[i][p], min(i, vis[i][p]), max(i, vis[i][p])});

  sort(pairs.begin(), pairs.end());
  pairs.erase(unique(pairs.begin(), pairs.end()), pairs.end());

  DEBUG(pairs);
  int P = pairs.size();

  ll ans = 1LL<<60;

  REP(p0, P) {
    auto [d0, i0, j0] = pairs[p0];
    REP(p1, P) {
      auto [d1, i1, j1] = pairs[p1];
      if (i0 == i1) continue;
      if (i0 == j1) continue;
      if (j0 == i1) continue;
      if (j0 == j1) continue;
      ans = min(ans, d0+d1);
      break;
    }
  }

  cout << ans << '\n';
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2684 KB Output is correct
2 Correct 4 ms 2924 KB Output is correct
3 Correct 3 ms 2688 KB Output is correct
4 Correct 3 ms 2668 KB Output is correct
5 Correct 3 ms 2668 KB Output is correct
6 Correct 3 ms 2668 KB Output is correct
7 Correct 4 ms 2924 KB Output is correct
8 Correct 4 ms 2924 KB Output is correct
9 Correct 3 ms 2688 KB Output is correct
10 Correct 3 ms 2668 KB Output is correct
11 Correct 3 ms 2668 KB Output is correct
12 Correct 3 ms 2668 KB Output is correct
13 Correct 4 ms 2924 KB Output is correct
14 Correct 3 ms 2924 KB Output is correct
15 Correct 4 ms 2924 KB Output is correct
16 Correct 3 ms 2668 KB Output is correct
17 Correct 3 ms 2924 KB Output is correct
18 Correct 3 ms 2688 KB Output is correct
19 Correct 4 ms 2924 KB Output is correct
20 Correct 3 ms 2796 KB Output is correct
21 Correct 3 ms 2924 KB Output is correct
22 Correct 3 ms 2668 KB Output is correct
23 Correct 3 ms 2796 KB Output is correct
24 Correct 3 ms 2688 KB Output is correct
25 Correct 3 ms 2668 KB Output is correct
26 Correct 3 ms 2668 KB Output is correct
27 Correct 3 ms 2668 KB Output is correct
28 Correct 4 ms 3052 KB Output is correct
29 Correct 4 ms 2924 KB Output is correct
30 Correct 4 ms 3052 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2684 KB Output is correct
2 Correct 4 ms 2924 KB Output is correct
3 Correct 3 ms 2688 KB Output is correct
4 Correct 3 ms 2668 KB Output is correct
5 Correct 3 ms 2668 KB Output is correct
6 Correct 3 ms 2668 KB Output is correct
7 Correct 4 ms 2924 KB Output is correct
8 Correct 4 ms 2924 KB Output is correct
9 Correct 3 ms 2688 KB Output is correct
10 Correct 3 ms 2668 KB Output is correct
11 Correct 3 ms 2668 KB Output is correct
12 Correct 3 ms 2668 KB Output is correct
13 Correct 4 ms 2924 KB Output is correct
14 Correct 3 ms 2924 KB Output is correct
15 Correct 4 ms 2924 KB Output is correct
16 Correct 3 ms 2668 KB Output is correct
17 Correct 3 ms 2924 KB Output is correct
18 Correct 3 ms 2688 KB Output is correct
19 Correct 4 ms 2924 KB Output is correct
20 Correct 3 ms 2796 KB Output is correct
21 Correct 3 ms 2924 KB Output is correct
22 Correct 3 ms 2668 KB Output is correct
23 Correct 3 ms 2796 KB Output is correct
24 Correct 3 ms 2688 KB Output is correct
25 Correct 3 ms 2668 KB Output is correct
26 Correct 3 ms 2668 KB Output is correct
27 Correct 3 ms 2668 KB Output is correct
28 Correct 4 ms 3052 KB Output is correct
29 Correct 4 ms 2924 KB Output is correct
30 Correct 4 ms 3052 KB Output is correct
31 Correct 3 ms 2796 KB Output is correct
32 Correct 3 ms 2796 KB Output is correct
33 Correct 3 ms 2796 KB Output is correct
34 Correct 3 ms 2796 KB Output is correct
35 Correct 3 ms 2796 KB Output is correct
36 Correct 8 ms 3500 KB Output is correct
37 Correct 11 ms 4072 KB Output is correct
38 Correct 4 ms 2796 KB Output is correct
39 Correct 132 ms 20580 KB Output is correct
40 Correct 27 ms 7136 KB Output is correct
41 Correct 4 ms 2924 KB Output is correct
42 Correct 29 ms 7136 KB Output is correct
43 Correct 7 ms 3372 KB Output is correct
44 Correct 4 ms 2924 KB Output is correct
45 Correct 3 ms 2668 KB Output is correct
46 Correct 196 ms 20836 KB Output is correct
47 Correct 20 ms 5096 KB Output is correct
48 Correct 116 ms 20452 KB Output is correct
49 Correct 145 ms 20580 KB Output is correct
50 Correct 3 ms 2796 KB Output is correct
51 Correct 5 ms 2924 KB Output is correct
52 Correct 3 ms 2796 KB Output is correct
53 Correct 67 ms 11748 KB Output is correct
54 Correct 140 ms 20708 KB Output is correct
55 Correct 3 ms 2796 KB Output is correct
56 Correct 3 ms 2796 KB Output is correct
57 Correct 3 ms 2796 KB Output is correct
58 Correct 199 ms 20964 KB Output is correct
59 Correct 3 ms 2668 KB Output is correct
60 Correct 4 ms 2924 KB Output is correct

Subtask #3
0 / 25.0

# 결과 실행 시간 메모리 Grader output
1 Correct 117 ms 13484 KB Output is correct
2 Correct 10 ms 8812 KB Output is correct
3 Execution timed out 6075 ms 516680 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 58.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 2684 KB Output is correct
2 Correct 4 ms 2924 KB Output is correct
3 Correct 3 ms 2688 KB Output is correct
4 Correct 3 ms 2668 KB Output is correct
5 Correct 3 ms 2668 KB Output is correct
6 Correct 3 ms 2668 KB Output is correct
7 Correct 4 ms 2924 KB Output is correct
8 Correct 4 ms 2924 KB Output is correct
9 Correct 3 ms 2688 KB Output is correct
10 Correct 3 ms 2668 KB Output is correct
11 Correct 3 ms 2668 KB Output is correct
12 Correct 3 ms 2668 KB Output is correct
13 Correct 4 ms 2924 KB Output is correct
14 Correct 3 ms 2924 KB Output is correct
15 Correct 4 ms 2924 KB Output is correct
16 Correct 3 ms 2668 KB Output is correct
17 Correct 3 ms 2924 KB Output is correct
18 Correct 3 ms 2688 KB Output is correct
19 Correct 4 ms 2924 KB Output is correct
20 Correct 3 ms 2796 KB Output is correct
21 Correct 3 ms 2924 KB Output is correct
22 Correct 3 ms 2668 KB Output is correct
23 Correct 3 ms 2796 KB Output is correct
24 Correct 3 ms 2688 KB Output is correct
25 Correct 3 ms 2668 KB Output is correct
26 Correct 3 ms 2668 KB Output is correct
27 Correct 3 ms 2668 KB Output is correct
28 Correct 4 ms 3052 KB Output is correct
29 Correct 4 ms 2924 KB Output is correct
30 Correct 4 ms 3052 KB Output is correct
31 Correct 3 ms 2796 KB Output is correct
32 Correct 3 ms 2796 KB Output is correct
33 Correct 3 ms 2796 KB Output is correct
34 Correct 3 ms 2796 KB Output is correct
35 Correct 3 ms 2796 KB Output is correct
36 Correct 8 ms 3500 KB Output is correct
37 Correct 11 ms 4072 KB Output is correct
38 Correct 4 ms 2796 KB Output is correct
39 Correct 132 ms 20580 KB Output is correct
40 Correct 27 ms 7136 KB Output is correct
41 Correct 4 ms 2924 KB Output is correct
42 Correct 29 ms 7136 KB Output is correct
43 Correct 7 ms 3372 KB Output is correct
44 Correct 4 ms 2924 KB Output is correct
45 Correct 3 ms 2668 KB Output is correct
46 Correct 196 ms 20836 KB Output is correct
47 Correct 20 ms 5096 KB Output is correct
48 Correct 116 ms 20452 KB Output is correct
49 Correct 145 ms 20580 KB Output is correct
50 Correct 3 ms 2796 KB Output is correct
51 Correct 5 ms 2924 KB Output is correct
52 Correct 3 ms 2796 KB Output is correct
53 Correct 67 ms 11748 KB Output is correct
54 Correct 140 ms 20708 KB Output is correct
55 Correct 3 ms 2796 KB Output is correct
56 Correct 3 ms 2796 KB Output is correct
57 Correct 3 ms 2796 KB Output is correct
58 Correct 199 ms 20964 KB Output is correct
59 Correct 3 ms 2668 KB Output is correct
60 Correct 4 ms 2924 KB Output is correct
61 Correct 117 ms 13484 KB Output is correct
62 Correct 10 ms 8812 KB Output is correct
63 Execution timed out 6075 ms 516680 KB Time limit exceeded
64 Halted 0 ms 0 KB -