oj.uz

Submission #383054

# Submission time Handle Problem Language Result Execution time Memory
383054 2021-03-28T18:31:33 Z Hegdahl Relay Marathon (NOI20_relaymarathon) C++17
17 / 100
 6000 ms 146564 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 INF = 1LL<<60;
const int mxN = 1e5;

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

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

template<class IsStart, class IsTarget>
ll solve(ll n, IsStart is_start, IsTarget is_target, ll cut) {
  
  vector<bool> vis(n);
  priority_queue<ar<ll, 2>, vector<ar<ll, 2>>, greater<ar<ll, 2>>> pq;
  REP(i, n) if (is_start(i)) pq.push({0, i});

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

    if (dhere > cut) return INF;

    if (vis[cur]) continue;
    if (is_target(cur)) return dhere;

    vis[cur] = true;

    for (auto [nxt, w] : g[cur]) {
      if (vis[nxt]) continue;
      pq.push({dhere+w, nxt});
    }
  }

  return INF;
}

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), pof(n, -1);
  REP(i, k) cin >> a[i], --a[i];

  ll ans = INF;

  REP(t, 200) {
    shuffle(a.begin(), a.end(), rng);
    REP(i, k) pof[a[i]] = i;

    ll d1 = solve(n,
        [&](ll i){return pof[i] >= 0*k/4 && pof[i] < 1*k/4;},
        [&](ll i){return pof[i] >= 1*k/4 && pof[i] < 2*k/4;},
        ans
    );                                                  
    ll d2 = solve(n,                                    
        [&](ll i){return pof[i] >= 2*k/4 && pof[i] < 3*k/4;},
        [&](ll i){return pof[i] >= 3*k/4 && pof[i] < 4*k/4;},
        ans-d1
    );

    ans = min(ans, d1+d2);
  }

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

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2668 KB Output is correct
2 Correct 6 ms 2796 KB Output is correct
3 Correct 3 ms 2668 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 5 ms 2796 KB Output is correct
8 Correct 5 ms 2796 KB Output is correct
9 Correct 3 ms 2668 KB Output is correct
10 Correct 3 ms 2668 KB Output is correct
11 Correct 4 ms 2668 KB Output is correct
12 Correct 3 ms 2668 KB Output is correct
13 Correct 5 ms 2796 KB Output is correct
14 Correct 5 ms 2796 KB Output is correct
15 Correct 7 ms 2796 KB Output is correct
16 Correct 3 ms 2668 KB Output is correct
17 Correct 5 ms 2796 KB Output is correct
18 Correct 4 ms 2668 KB Output is correct
19 Correct 6 ms 2796 KB Output is correct
20 Correct 4 ms 2668 KB Output is correct
21 Correct 5 ms 2796 KB Output is correct
22 Correct 3 ms 2668 KB Output is correct
23 Correct 4 ms 2668 KB Output is correct
24 Correct 3 ms 2668 KB Output is correct
25 Correct 3 ms 2668 KB Output is correct
26 Correct 3 ms 2668 KB Output is correct
27 Correct 4 ms 2668 KB Output is correct
28 Correct 6 ms 2796 KB Output is correct
29 Correct 6 ms 2796 KB Output is correct
30 Correct 6 ms 2796 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2668 KB Output is correct
2 Correct 6 ms 2796 KB Output is correct
3 Correct 3 ms 2668 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 5 ms 2796 KB Output is correct
8 Correct 5 ms 2796 KB Output is correct
9 Correct 3 ms 2668 KB Output is correct
10 Correct 3 ms 2668 KB Output is correct
11 Correct 4 ms 2668 KB Output is correct
12 Correct 3 ms 2668 KB Output is correct
13 Correct 5 ms 2796 KB Output is correct
14 Correct 5 ms 2796 KB Output is correct
15 Correct 7 ms 2796 KB Output is correct
16 Correct 3 ms 2668 KB Output is correct
17 Correct 5 ms 2796 KB Output is correct
18 Correct 4 ms 2668 KB Output is correct
19 Correct 6 ms 2796 KB Output is correct
20 Correct 4 ms 2668 KB Output is correct
21 Correct 5 ms 2796 KB Output is correct
22 Correct 3 ms 2668 KB Output is correct
23 Correct 4 ms 2668 KB Output is correct
24 Correct 3 ms 2668 KB Output is correct
25 Correct 3 ms 2668 KB Output is correct
26 Correct 3 ms 2668 KB Output is correct
27 Correct 4 ms 2668 KB Output is correct
28 Correct 6 ms 2796 KB Output is correct
29 Correct 6 ms 2796 KB Output is correct
30 Correct 6 ms 2796 KB Output is correct
31 Correct 6 ms 2668 KB Output is correct
32 Correct 5 ms 2668 KB Output is correct
33 Correct 13 ms 2796 KB Output is correct
34 Correct 3 ms 2668 KB Output is correct
35 Correct 3 ms 2668 KB Output is correct
36 Correct 15 ms 2924 KB Output is correct
37 Correct 31 ms 3180 KB Output is correct
38 Correct 5 ms 2796 KB Output is correct
39 Correct 92 ms 7808 KB Output is correct
40 Correct 62 ms 4220 KB Output is correct
41 Correct 7 ms 2796 KB Output is correct
42 Correct 75 ms 4160 KB Output is correct
43 Correct 13 ms 3052 KB Output is correct
44 Correct 8 ms 2796 KB Output is correct
45 Correct 4 ms 2668 KB Output is correct
46 Correct 657 ms 9168 KB Output is correct
47 Correct 40 ms 3564 KB Output is correct
48 Correct 98 ms 8128 KB Output is correct
49 Correct 347 ms 8388 KB Output is correct
50 Correct 8 ms 2796 KB Output is correct
51 Correct 9 ms 2796 KB Output is correct
52 Correct 8 ms 2796 KB Output is correct
53 Correct 42 ms 5432 KB Output is correct
54 Correct 95 ms 7824 KB Output is correct
55 Correct 5 ms 2796 KB Output is correct
56 Correct 4 ms 2668 KB Output is correct
57 Correct 5 ms 2796 KB Output is correct
58 Correct 251 ms 8980 KB Output is correct
59 Correct 3 ms 2668 KB Output is correct
60 Correct 10 ms 2796 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 131 ms 7344 KB Output is correct
2 Correct 69 ms 3948 KB Output is correct
3 Execution timed out 6041 ms 146564 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 58.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2668 KB Output is correct
2 Correct 6 ms 2796 KB Output is correct
3 Correct 3 ms 2668 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 5 ms 2796 KB Output is correct
8 Correct 5 ms 2796 KB Output is correct
9 Correct 3 ms 2668 KB Output is correct
10 Correct 3 ms 2668 KB Output is correct
11 Correct 4 ms 2668 KB Output is correct
12 Correct 3 ms 2668 KB Output is correct
13 Correct 5 ms 2796 KB Output is correct
14 Correct 5 ms 2796 KB Output is correct
15 Correct 7 ms 2796 KB Output is correct
16 Correct 3 ms 2668 KB Output is correct
17 Correct 5 ms 2796 KB Output is correct
18 Correct 4 ms 2668 KB Output is correct
19 Correct 6 ms 2796 KB Output is correct
20 Correct 4 ms 2668 KB Output is correct
21 Correct 5 ms 2796 KB Output is correct
22 Correct 3 ms 2668 KB Output is correct
23 Correct 4 ms 2668 KB Output is correct
24 Correct 3 ms 2668 KB Output is correct
25 Correct 3 ms 2668 KB Output is correct
26 Correct 3 ms 2668 KB Output is correct
27 Correct 4 ms 2668 KB Output is correct
28 Correct 6 ms 2796 KB Output is correct
29 Correct 6 ms 2796 KB Output is correct
30 Correct 6 ms 2796 KB Output is correct
31 Correct 6 ms 2668 KB Output is correct
32 Correct 5 ms 2668 KB Output is correct
33 Correct 13 ms 2796 KB Output is correct
34 Correct 3 ms 2668 KB Output is correct
35 Correct 3 ms 2668 KB Output is correct
36 Correct 15 ms 2924 KB Output is correct
37 Correct 31 ms 3180 KB Output is correct
38 Correct 5 ms 2796 KB Output is correct
39 Correct 92 ms 7808 KB Output is correct
40 Correct 62 ms 4220 KB Output is correct
41 Correct 7 ms 2796 KB Output is correct
42 Correct 75 ms 4160 KB Output is correct
43 Correct 13 ms 3052 KB Output is correct
44 Correct 8 ms 2796 KB Output is correct
45 Correct 4 ms 2668 KB Output is correct
46 Correct 657 ms 9168 KB Output is correct
47 Correct 40 ms 3564 KB Output is correct
48 Correct 98 ms 8128 KB Output is correct
49 Correct 347 ms 8388 KB Output is correct
50 Correct 8 ms 2796 KB Output is correct
51 Correct 9 ms 2796 KB Output is correct
52 Correct 8 ms 2796 KB Output is correct
53 Correct 42 ms 5432 KB Output is correct
54 Correct 95 ms 7824 KB Output is correct
55 Correct 5 ms 2796 KB Output is correct
56 Correct 4 ms 2668 KB Output is correct
57 Correct 5 ms 2796 KB Output is correct
58 Correct 251 ms 8980 KB Output is correct
59 Correct 3 ms 2668 KB Output is correct
60 Correct 10 ms 2796 KB Output is correct
61 Correct 131 ms 7344 KB Output is correct
62 Correct 69 ms 3948 KB Output is correct
63 Execution timed out 6041 ms 146564 KB Time limit exceeded
64 Halted 0 ms 0 KB -