oj.uz

답안 #1077047

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1077047 2024-08-26T21:53:17 Z vyshniak_n Construction Project 2 (JOI24_ho_t2) C++17
100 / 100
 264 ms 34740 KB 
//#pragma optimize("Ofast")
//#pragma optimize("unroll-loops")
//#pragma traget("avx,avx2")
 
#include <iostream>
#include <cmath>
#include <algorithm>
#include <stdio.h>
#include <cstdint>
#include <cstring>
#include <string>
#include <cstdlib>
#include <vector>
#include <bitset>
#include <map>
#include <queue>
#include <ctime>
#include <stack>
#include <set>
#include <list>
#include <random>
#include <deque>
#include <functional>
#include <iomanip>
#include <sstream>
#include <fstream>
#include <complex>
#include <numeric>
#include <cassert>
#include <array>
#include <tuple>
#include <unordered_map>
#include <unordered_set>
#include <thread>
 
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
 
#define el '\n'
#define ff first
#define ss second
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define point pair <ll, ll>
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
 
using namespace std;
 
#include <random>
mt19937 rnd(time(0));
 
const ll INF = 2e18 + 10;
const ll inf = 1e9 + 10;
const ll N = 2e5 + 10;
const ll mod = 1e9 + 7;
const ll LOG = 20;

vector <point> gr[N];

void solve() {
    ll n, m;
    cin >> n >> m;

    ll s, t, l, k;
    cin >> s >> t >> l >> k;

    for (ll i = 0; i < m; i++) {
        ll u, v, c;
        cin >> u >> v >> c;

        gr[u].pb({v, c});
        gr[v].pb({u, c});
    }

    auto bfs = [&](ll start) -> vector <ll> {
        vector <ll> dist(n + 1, INF);
        dist[start] = 0;
        dist[0] = -INF;

        set <point> st;
        st.insert({dist[start], start});

        while (!st.empty()) {
            ll v = st.begin()->ss;
            st.erase(st.begin());

            for (point to : gr[v]) {
                if (dist[to.ff] > dist[v] + to.ss) {
                    st.erase({dist[to.ff], to.ff});
                    dist[to.ff] = dist[v] + to.ss;
                    st.insert({dist[to.ff], to.ff});
                }
            }
        }

        return dist;
    };

    vector <ll> dist[2];
    dist[0] = bfs(s);
    dist[1] = bfs(t);

    if (dist[0][t] <= k)
        return void(cout << n * (n - 1) / 2 << el);

    ll ans = 0;

    sort(all(dist[0]));
    sort(all(dist[1]));

    for (ll i = 1; i <= n; i++) {
        ll lb, rb;

        lb = 0, rb = n + 1;
        while (lb + 1 < rb) {
            ll mid = (lb + rb) >> 1;

            if (dist[0][i] + l + dist[1][mid] <= k)
                lb = mid;
            else
                rb = mid;
        }
        ans += lb;

        lb = 0, rb = n + 1;
        while (lb + 1 < rb) {
            ll mid = (lb + rb) >> 1;

            if (dist[0][mid] + l + dist[1][i] <= k)
                lb = mid;
            else
                rb = mid;
        }
        ans += lb;
    }

    cout << ans / 2 << el;
    return;
}
signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    //freopen("deleg.in", "r", stdin);
    //freopen("deleg.out", "w", stdout);

    int tests = 1;
    //cin >> tests;
 
    while (tests--) 
        solve();
    return 0;
}
/*
*/

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 4944 KB Output is correct
4 Correct 3 ms 4952 KB Output is correct
5 Correct 4 ms 5212 KB Output is correct
6 Correct 3 ms 5280 KB Output is correct
7 Correct 96 ms 23104 KB Output is correct
8 Correct 127 ms 23180 KB Output is correct
9 Correct 120 ms 25552 KB Output is correct
10 Correct 3 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 2 ms 5212 KB Output is correct
13 Correct 4 ms 5212 KB Output is correct
14 Correct 62 ms 15052 KB Output is correct
15 Correct 232 ms 23512 KB Output is correct
16 Correct 2 ms 4956 KB Output is correct
17 Correct 3 ms 5212 KB Output is correct
18 Correct 101 ms 20596 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 3 ms 4956 KB Output is correct
21 Correct 3 ms 5212 KB Output is correct
22 Correct 3 ms 5212 KB Output is correct
23 Correct 48 ms 14944 KB Output is correct
24 Correct 214 ms 23352 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 3 ms 5548 KB Output is correct
27 Correct 185 ms 33064 KB Output is correct
28 Correct 114 ms 23080 KB Output is correct
29 Correct 79 ms 18352 KB Output is correct

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 4 ms 4956 KB Output is correct
3 Correct 2 ms 5160 KB Output is correct
4 Correct 4 ms 4956 KB Output is correct
5 Correct 3 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 5212 KB Output is correct
11 Correct 3 ms 4996 KB Output is correct
12 Correct 2 ms 5156 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 4 ms 4956 KB Output is correct
15 Correct 3 ms 4952 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 2 ms 4956 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct
22 Correct 2 ms 4952 KB Output is correct
23 Correct 3 ms 4956 KB Output is correct
24 Correct 2 ms 4956 KB Output is correct
25 Correct 2 ms 5168 KB Output is correct
26 Correct 3 ms 4956 KB Output is correct
27 Correct 2 ms 4956 KB Output is correct
28 Correct 2 ms 4956 KB Output is correct
29 Correct 2 ms 4956 KB Output is correct
30 Correct 3 ms 4956 KB Output is correct
31 Correct 3 ms 5156 KB Output is correct
32 Correct 3 ms 4956 KB Output is correct

Subtask #3
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4956 KB Output is correct
2 Correct 4 ms 4956 KB Output is correct
3 Correct 2 ms 5160 KB Output is correct
4 Correct 4 ms 4956 KB Output is correct
5 Correct 3 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 5212 KB Output is correct
11 Correct 3 ms 4996 KB Output is correct
12 Correct 2 ms 5156 KB Output is correct
13 Correct 2 ms 4956 KB Output is correct
14 Correct 4 ms 4956 KB Output is correct
15 Correct 3 ms 4952 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 2 ms 4956 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct
22 Correct 2 ms 4952 KB Output is correct
23 Correct 3 ms 4956 KB Output is correct
24 Correct 2 ms 4956 KB Output is correct
25 Correct 2 ms 5168 KB Output is correct
26 Correct 3 ms 4956 KB Output is correct
27 Correct 2 ms 4956 KB Output is correct
28 Correct 2 ms 4956 KB Output is correct
29 Correct 2 ms 4956 KB Output is correct
30 Correct 3 ms 4956 KB Output is correct
31 Correct 3 ms 5156 KB Output is correct
32 Correct 3 ms 4956 KB Output is correct
33 Correct 5 ms 5212 KB Output is correct
34 Correct 5 ms 5456 KB Output is correct
35 Correct 3 ms 5212 KB Output is correct
36 Correct 4 ms 5212 KB Output is correct
37 Correct 3 ms 5208 KB Output is correct
38 Correct 2 ms 5208 KB Output is correct
39 Correct 3 ms 5212 KB Output is correct
40 Correct 5 ms 5492 KB Output is correct
41 Correct 3 ms 5212 KB Output is correct
42 Correct 3 ms 5212 KB Output is correct
43 Correct 5 ms 5268 KB Output is correct
44 Correct 4 ms 5212 KB Output is correct
45 Correct 5 ms 5212 KB Output is correct
46 Correct 4 ms 5212 KB Output is correct
47 Correct 5 ms 5212 KB Output is correct
48 Correct 3 ms 5208 KB Output is correct
49 Correct 3 ms 5212 KB Output is correct
50 Correct 3 ms 5172 KB Output is correct
51 Correct 5 ms 5212 KB Output is correct
52 Correct 4 ms 5212 KB Output is correct
53 Correct 4 ms 5468 KB Output is correct
54 Correct 5 ms 5468 KB Output is correct
55 Correct 3 ms 5212 KB Output is correct
56 Correct 3 ms 5208 KB Output is correct
57 Correct 3 ms 5244 KB Output is correct
58 Correct 6 ms 5292 KB Output is correct

Subtask #4
47.0 / 47.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 3 ms 4944 KB Output is correct
4 Correct 3 ms 4952 KB Output is correct
5 Correct 4 ms 5212 KB Output is correct
6 Correct 3 ms 5280 KB Output is correct
7 Correct 96 ms 23104 KB Output is correct
8 Correct 127 ms 23180 KB Output is correct
9 Correct 120 ms 25552 KB Output is correct
10 Correct 3 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 2 ms 5212 KB Output is correct
13 Correct 4 ms 5212 KB Output is correct
14 Correct 62 ms 15052 KB Output is correct
15 Correct 232 ms 23512 KB Output is correct
16 Correct 2 ms 4956 KB Output is correct
17 Correct 3 ms 5212 KB Output is correct
18 Correct 101 ms 20596 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 3 ms 4956 KB Output is correct
21 Correct 3 ms 5212 KB Output is correct
22 Correct 3 ms 5212 KB Output is correct
23 Correct 48 ms 14944 KB Output is correct
24 Correct 214 ms 23352 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 3 ms 5548 KB Output is correct
27 Correct 185 ms 33064 KB Output is correct
28 Correct 114 ms 23080 KB Output is correct
29 Correct 79 ms 18352 KB Output is correct
30 Correct 2 ms 4956 KB Output is correct
31 Correct 4 ms 4956 KB Output is correct
32 Correct 2 ms 5160 KB Output is correct
33 Correct 4 ms 4956 KB Output is correct
34 Correct 3 ms 4956 KB Output is correct
35 Correct 2 ms 4956 KB Output is correct
36 Correct 2 ms 4956 KB Output is correct
37 Correct 2 ms 4956 KB Output is correct
38 Correct 2 ms 4956 KB Output is correct
39 Correct 2 ms 5212 KB Output is correct
40 Correct 3 ms 4996 KB Output is correct
41 Correct 2 ms 5156 KB Output is correct
42 Correct 2 ms 4956 KB Output is correct
43 Correct 4 ms 4956 KB Output is correct
44 Correct 3 ms 4952 KB Output is correct
45 Correct 3 ms 4956 KB Output is correct
46 Correct 2 ms 4956 KB Output is correct
47 Correct 2 ms 4956 KB Output is correct
48 Correct 2 ms 4956 KB Output is correct
49 Correct 2 ms 4956 KB Output is correct
50 Correct 2 ms 4956 KB Output is correct
51 Correct 2 ms 4952 KB Output is correct
52 Correct 3 ms 4956 KB Output is correct
53 Correct 2 ms 4956 KB Output is correct
54 Correct 2 ms 5168 KB Output is correct
55 Correct 3 ms 4956 KB Output is correct
56 Correct 2 ms 4956 KB Output is correct
57 Correct 2 ms 4956 KB Output is correct
58 Correct 2 ms 4956 KB Output is correct
59 Correct 3 ms 4956 KB Output is correct
60 Correct 3 ms 5156 KB Output is correct
61 Correct 3 ms 4956 KB Output is correct
62 Correct 5 ms 5212 KB Output is correct
63 Correct 5 ms 5456 KB Output is correct
64 Correct 3 ms 5212 KB Output is correct
65 Correct 4 ms 5212 KB Output is correct
66 Correct 3 ms 5208 KB Output is correct
67 Correct 2 ms 5208 KB Output is correct
68 Correct 3 ms 5212 KB Output is correct
69 Correct 5 ms 5492 KB Output is correct
70 Correct 3 ms 5212 KB Output is correct
71 Correct 3 ms 5212 KB Output is correct
72 Correct 5 ms 5268 KB Output is correct
73 Correct 4 ms 5212 KB Output is correct
74 Correct 5 ms 5212 KB Output is correct
75 Correct 4 ms 5212 KB Output is correct
76 Correct 5 ms 5212 KB Output is correct
77 Correct 3 ms 5208 KB Output is correct
78 Correct 3 ms 5212 KB Output is correct
79 Correct 3 ms 5172 KB Output is correct
80 Correct 5 ms 5212 KB Output is correct
81 Correct 4 ms 5212 KB Output is correct
82 Correct 4 ms 5468 KB Output is correct
83 Correct 5 ms 5468 KB Output is correct
84 Correct 3 ms 5212 KB Output is correct
85 Correct 3 ms 5208 KB Output is correct
86 Correct 3 ms 5244 KB Output is correct
87 Correct 6 ms 5292 KB Output is correct
88 Correct 103 ms 23892 KB Output is correct
89 Correct 112 ms 23980 KB Output is correct
90 Correct 109 ms 23888 KB Output is correct
91 Correct 42 ms 18660 KB Output is correct
92 Correct 41 ms 18880 KB Output is correct
93 Correct 46 ms 15696 KB Output is correct
94 Correct 46 ms 15744 KB Output is correct
95 Correct 222 ms 25000 KB Output is correct
96 Correct 187 ms 25020 KB Output is correct
97 Correct 174 ms 22920 KB Output is correct
98 Correct 148 ms 23120 KB Output is correct
99 Correct 80 ms 22040 KB Output is correct
100 Correct 77 ms 21964 KB Output is correct
101 Correct 40 ms 18772 KB Output is correct
102 Correct 42 ms 18728 KB Output is correct
103 Correct 46 ms 15696 KB Output is correct
104 Correct 45 ms 15640 KB Output is correct
105 Correct 243 ms 24828 KB Output is correct
106 Correct 232 ms 25052 KB Output is correct
107 Correct 247 ms 34484 KB Output is correct
108 Correct 264 ms 34740 KB Output is correct
109 Correct 126 ms 24396 KB Output is correct
110 Correct 122 ms 24368 KB Output is correct
111 Correct 77 ms 18516 KB Output is correct
112 Correct 76 ms 18516 KB Output is correct