답안 #1094462

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1094462 2024-09-29T16:31:01 Z shmax Construction Project 2 (JOI24_ho_t2) C++17
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247 ms 35860 KB
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 */
/*
 * powered by ANDRIY POPYK
 * in honor of MYSELF and SEGMENT DECOMPOSITION and N^(log(N)) and (Harry Potter and the Methods of Rationality) and Monkie D. Luffy
*/
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>

//#pragma GCC optimize("O3")
//#pragma GCC target("avx,avx2,fma")
//#pragma GCC optimization ("unroll-loops")
//#pragma GCC target("avx,avx2,sse,sse2,sse3,sse4,popcnt")

using namespace std;
using namespace __gnu_pbds;
#define int long long
#define float long double
#define elif else if
#define endl "\n"
#define mod 1000000007
#define pi acos(-1)
#define eps 0.000000001
#define inf 1000'000'000'000'000'000LL
#define FIXED(a) cout << fixed << setprecision(a)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define time_init auto start = std::chrono::high_resolution_clock::now()
#define time_report                                       \
    auto end = std::chrono::high_resolution_clock::now(); \
    std::cout << std::chrono::duration_cast<std::chrono::milliseconds>(end - start).count() << " ms" << endl
#define debug(x) \
    { cerr << #x << " = " << x << endl; }
#define len(x) (int) x.size()
#define sqr(x) ((x) * (x))
#define cube(x) ((x) * (x) * (x))
#define bit(x, i) (((x) >> (i)) & 1)
#define set_bit(x, i) ((x) | (1LL << (i)))
#define clear_bit(x, i) ((x) & (~(1LL << (i))))
#define toggle_bit(x, i) ((x) ^ (1LL << (i)))
#define low_bit(x) ((x) & (-(x)))
#define count_bit(x) __builtin_popcountll(x)
#define srt(x) sort(all(x))
#define rsrt(x) sort(rall(x))
#define mp make_pair
#define maxel(x) (*max_element(all(x)))
#define minel(x) (*min_element(all(x)))
#define maxelpos(x) (max_element(all(x)) - x.begin())
#define minelpos(x) (min_element(all(x)) - x.begin())
#define sum(x) (accumulate(all(x), 0LL))
#define product(x) (accumulate(all(x), 1LL, multiplies<int>()))
#define gcd __gcd
#define lcm(a, b) ((a) / gcd(a, b) * (b))
#define rev(x) (reverse(all(x)))
#define shift_left(x, k) (rotate(x.begin(), x.begin() + k, x.end()))
#define shift_right(x, k) (rotate(x.rbegin(), x.rbegin() + k, x.rend()))
#define is_sorted(x) (is_sorted_until(all(x)) == x.end())
#define is_even(x) (((x) &1) == 0)
#define is_odd(x) (((x) &1) == 1)
#define pow2(x) (1LL << (x))

struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        // http://xorshift.di.unimi.it/splitmix64.c
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

template<typename T>
using min_heap = priority_queue<T, vector<T>, greater<T>>;
template<typename T>
using max_heap = priority_queue<T, vector<T>, less<T>>;
template<typename T>
using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T>
using ordered_multiset = tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>;
template<typename T>
using matrix = vector<vector<T>>;
template<typename T>
using graph = vector<vector<T>>;
using hashmap = gp_hash_table<int, int, custom_hash>;

template<typename T>
vector<T> vect(int n, T val) {
    return vector<T>(n, val);
}

template<typename T>
vector<vector<T>> vect(int n, int m, T val) {
    return vector<vector<T>>(n, vector<T>(m, val));
}

template<typename T>
vector<vector<vector<T>>> vect(int n, int m, int k, T val) {
    return vector<vector<vector<T>>>(n, vector<vector<T>>(m, vector<T>(k, val)));
}

template<typename T>
vector<vector<vector<vector<T>>>> vect(int n, int m, int k, int l, T val) {
    return vector<vector<vector<vector<T>>>>(n, vector<vector<vector<T>>>(m, vector<vector<T>>(k, vector<T>(l, val))));
}

template<typename T>
matrix<T> new_matrix(int n, int m, T val) {
    return matrix<T>(n, vector<T>(m, val));
}

template<typename T>
graph<T> new_graph(int n) {
    return graph<T>(n);
}

template<class T, class S>
inline bool chmax(T &a, const S &b) {
    return (a < b ? a = b, 1 : 0);
}

template<class T, class S>
inline bool chmin(T &a, const S &b) {
    return (a > b ? a = b, 1 : 0);
}

using i8 = int8_t;
using i16 = int16_t;
using i32 = int32_t;
using i64 = int64_t;
using i128 = __int128_t;
using u8 = uint8_t;
using u16 = uint16_t;
using u32 = uint32_t;
using u64 = uint64_t;
using u128 = __uint128_t;

template<typename T>
using vec = vector<T>;

using pII = pair<int, int>;
template<typename T>
using enumerated = pair<T, int>;

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    int n, m;
    cin >> n >> m;
    int s, t, l, k;
    cin >> s >> t >> l >> k;
    --s, --t;
    graph<pair<int, int>> g(n);
    for (int i = 0; i < m; i++) {
        int u, v, c;
        cin >> u >> v >> c;
        --u, --v;
        g[u].emplace_back(v, c);
        g[v].emplace_back(u, c);
    }
    auto dijkstra = [&](int start) {
        vec<int> dist(n, inf);
        min_heap<pair<int, int>> q;
        q.emplace(0, start);
        dist[start] = 0;
        while (!q.empty()) {
            auto [d, u] = q.top();
            q.pop();
            if (d != dist[u]) continue;
            for (auto [v, c]: g[u]) {
                if (chmin(dist[v], dist[u] + c)) {
                    q.push({dist[v], v});
                }
            }
        }
        return dist;
    };

    vec<int> dist_s = dijkstra(s);
    vec<int> dist_t = dijkstra(t);
    ordered_multiset<int> dists(all(dist_t));
    if (dist_s[t] <= k) {
        cout << n * (n - 1) / 2 << endl;
        return 0;
    }
    int cnt = 0;
    for (int i = 0; i < n; i++) {
        int have = k - dist_s[i] - l;
        if (have < 0) continue;
        cnt += dists.order_of_key(have + 1);
    }
    cout << cnt << endl;

}
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 860 KB Output is correct
6 Correct 2 ms 856 KB Output is correct
7 Correct 95 ms 30476 KB Output is correct
8 Correct 122 ms 30552 KB Output is correct
9 Correct 122 ms 30556 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 1112 KB Output is correct
13 Correct 2 ms 860 KB Output is correct
14 Correct 143 ms 27400 KB Output is correct
15 Correct 182 ms 33940 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 2 ms 724 KB Output is correct
18 Correct 147 ms 33100 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 860 KB Output is correct
22 Correct 2 ms 1116 KB Output is correct
23 Correct 139 ms 27572 KB Output is correct
24 Correct 167 ms 34008 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 2 ms 860 KB Output is correct
27 Correct 180 ms 33200 KB Output is correct
28 Correct 116 ms 20776 KB Output is correct
29 Correct 92 ms 24912 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 464 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 416 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 464 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 600 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 0 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 416 KB Output is correct
26 Correct 0 ms 348 KB Output is correct
27 Correct 1 ms 348 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 1 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 860 KB Output is correct
34 Correct 2 ms 836 KB Output is correct
35 Correct 2 ms 604 KB Output is correct
36 Correct 2 ms 856 KB Output is correct
37 Correct 1 ms 860 KB Output is correct
38 Correct 1 ms 860 KB Output is correct
39 Correct 2 ms 860 KB Output is correct
40 Correct 2 ms 860 KB Output is correct
41 Correct 1 ms 688 KB Output is correct
42 Correct 1 ms 856 KB Output is correct
43 Correct 3 ms 860 KB Output is correct
44 Correct 2 ms 860 KB Output is correct
45 Correct 2 ms 860 KB Output is correct
46 Correct 2 ms 860 KB Output is correct
47 Correct 2 ms 860 KB Output is correct
48 Correct 2 ms 860 KB Output is correct
49 Correct 1 ms 568 KB Output is correct
50 Correct 1 ms 856 KB Output is correct
51 Correct 2 ms 892 KB Output is correct
52 Correct 2 ms 860 KB Output is correct
53 Correct 2 ms 860 KB Output is correct
54 Correct 2 ms 856 KB Output is correct
55 Correct 1 ms 604 KB Output is correct
56 Correct 1 ms 604 KB Output is correct
57 Correct 1 ms 604 KB Output is correct
58 Correct 1 ms 604 KB Output is correct
# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 860 KB Output is correct
6 Correct 2 ms 856 KB Output is correct
7 Correct 95 ms 30476 KB Output is correct
8 Correct 122 ms 30552 KB Output is correct
9 Correct 122 ms 30556 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 1 ms 1112 KB Output is correct
13 Correct 2 ms 860 KB Output is correct
14 Correct 143 ms 27400 KB Output is correct
15 Correct 182 ms 33940 KB Output is correct
16 Correct 1 ms 344 KB Output is correct
17 Correct 2 ms 724 KB Output is correct
18 Correct 147 ms 33100 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 860 KB Output is correct
22 Correct 2 ms 1116 KB Output is correct
23 Correct 139 ms 27572 KB Output is correct
24 Correct 167 ms 34008 KB Output is correct
25 Correct 0 ms 344 KB Output is correct
26 Correct 2 ms 860 KB Output is correct
27 Correct 180 ms 33200 KB Output is correct
28 Correct 116 ms 20776 KB Output is correct
29 Correct 92 ms 24912 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 1 ms 348 KB Output is correct
37 Correct 0 ms 464 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 0 ms 600 KB Output is correct
40 Correct 0 ms 348 KB Output is correct
41 Correct 0 ms 348 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 1 ms 348 KB Output is correct
45 Correct 0 ms 348 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 0 ms 348 KB Output is correct
50 Correct 0 ms 348 KB Output is correct
51 Correct 0 ms 348 KB Output is correct
52 Correct 0 ms 348 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 416 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 1 ms 348 KB Output is correct
57 Correct 0 ms 348 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 1 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 0 ms 348 KB Output is correct
62 Correct 1 ms 860 KB Output is correct
63 Correct 2 ms 836 KB Output is correct
64 Correct 2 ms 604 KB Output is correct
65 Correct 2 ms 856 KB Output is correct
66 Correct 1 ms 860 KB Output is correct
67 Correct 1 ms 860 KB Output is correct
68 Correct 2 ms 860 KB Output is correct
69 Correct 2 ms 860 KB Output is correct
70 Correct 1 ms 688 KB Output is correct
71 Correct 1 ms 856 KB Output is correct
72 Correct 3 ms 860 KB Output is correct
73 Correct 2 ms 860 KB Output is correct
74 Correct 2 ms 860 KB Output is correct
75 Correct 2 ms 860 KB Output is correct
76 Correct 2 ms 860 KB Output is correct
77 Correct 2 ms 860 KB Output is correct
78 Correct 1 ms 568 KB Output is correct
79 Correct 1 ms 856 KB Output is correct
80 Correct 2 ms 892 KB Output is correct
81 Correct 2 ms 860 KB Output is correct
82 Correct 2 ms 860 KB Output is correct
83 Correct 2 ms 856 KB Output is correct
84 Correct 1 ms 604 KB Output is correct
85 Correct 1 ms 604 KB Output is correct
86 Correct 1 ms 604 KB Output is correct
87 Correct 1 ms 604 KB Output is correct
88 Correct 182 ms 35704 KB Output is correct
89 Correct 165 ms 35860 KB Output is correct
90 Correct 177 ms 35820 KB Output is correct
91 Correct 36 ms 14164 KB Output is correct
92 Correct 39 ms 14484 KB Output is correct
93 Correct 154 ms 28240 KB Output is correct
94 Correct 150 ms 28244 KB Output is correct
95 Correct 208 ms 35620 KB Output is correct
96 Correct 217 ms 35628 KB Output is correct
97 Correct 233 ms 35668 KB Output is correct
98 Correct 247 ms 35660 KB Output is correct
99 Correct 179 ms 34640 KB Output is correct
100 Correct 160 ms 34644 KB Output is correct
101 Correct 36 ms 14252 KB Output is correct
102 Correct 37 ms 14416 KB Output is correct
103 Correct 156 ms 28304 KB Output is correct
104 Correct 163 ms 28240 KB Output is correct
105 Correct 216 ms 35620 KB Output is correct
106 Correct 204 ms 35416 KB Output is correct
107 Correct 201 ms 34552 KB Output is correct
108 Correct 220 ms 34692 KB Output is correct
109 Correct 105 ms 22004 KB Output is correct
110 Correct 106 ms 22008 KB Output is correct
111 Correct 114 ms 25216 KB Output is correct
112 Correct 120 ms 25188 KB Output is correct