oj.uz

Submission #1095700

# Submission time Handle Problem Language Result Execution time Memory
1095700 2024-10-03T02:35:43 Z DucNguyen2007 Construction Project 2 (JOI24_ho_t2) C++14
100 / 100
 162 ms 28160 KB 
#include<bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
 
const int MAXN = 200001;
const ll INF = (ll)(1e18);
 
struct Node {
  int u;
  ll dis;
};
 
struct cmp {
  bool operator()(const Node &a, const Node &b) const {
    return a.dis > b.dis;
  }
};
 
int n, m, s, t, l;
ll dist[2][MAXN], ans, k;
bool vis[2][MAXN];
vector<pii> e[MAXN];
 
void dij(int S, bool op) {
  priority_queue<Node, vector<Node>, cmp> pq;
  for(int i = 1; i <= n; ++i) {
    dist[op][i] = INF;
    vis[op][i] = 0;
  }
  dist[op][S] = 0;
  pq.push({S, 0});
  for(; !pq.empty(); ) {
    auto [u, dis] = pq.top();
    pq.pop();
    if(vis[op][u]) {
      continue;
    }
    vis[op][u] = 1;
    for(auto [v, w] : e[u]) {
      if(dis + w < dist[op][v]) {
        dist[op][v] = dis + w;
        pq.push({v, dis + w});
      }
    }
  }
}
 
int main() {
  ios::sync_with_stdio(false), cin.tie(0), cout.tie(0);
  cin >> n >> m >> s >> t >> l >> k;
  for(int i = 1, u, v, w; i <= m; ++i) {
    cin >> u >> v >> w;
    e[u].emplace_back(v, w);
    e[v].emplace_back(u, w);
  }
  dij(s, 0);
  dij(t, 1);
  if(dist[0][t] <= k) {
    cout << 1ll * n * (n - 1) / 2;
    return 0;
  }
  sort(dist[0] + 1, dist[0] + n + 1);
  sort(dist[1] + 1, dist[1] + n + 1);
  for(int i = 1, j = n; i <= n; ++i) {
    for(; j > 0 && dist[0][i] + dist[1][j] + l > k; --j) {
    }
    ans += j;
  }
  cout << ans;
  return 0;
}

Compilation message

Main.cpp: In function 'void dij(int, bool)':
Main.cpp:34:10: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   34 |     auto [u, dis] = pq.top();
      |          ^
Main.cpp:40:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   40 |     for(auto [v, w] : e[u]) {
      |              ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 3 ms 5180 KB Output is correct
6 Correct 3 ms 5212 KB Output is correct
7 Correct 50 ms 20436 KB Output is correct
8 Correct 65 ms 20556 KB Output is correct
9 Correct 62 ms 23792 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 3 ms 5212 KB Output is correct
13 Correct 3 ms 5208 KB Output is correct
14 Correct 32 ms 14172 KB Output is correct
15 Correct 106 ms 19536 KB Output is correct
16 Correct 2 ms 4952 KB Output is correct
17 Correct 3 ms 5212 KB Output is correct
18 Correct 71 ms 17820 KB Output is correct
19 Correct 2 ms 4952 KB Output is correct
20 Correct 4 ms 4956 KB Output is correct
21 Correct 2 ms 5208 KB Output is correct
22 Correct 3 ms 5180 KB Output is correct
23 Correct 35 ms 14332 KB Output is correct
24 Correct 104 ms 19500 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 3 ms 5720 KB Output is correct
27 Correct 75 ms 26780 KB Output is correct
28 Correct 52 ms 17500 KB Output is correct
29 Correct 77 ms 15444 KB Output is correct

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 2 ms 5188 KB Output is correct
8 Correct 2 ms 5208 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4952 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 2 ms 4956 KB Output is correct
13 Correct 2 ms 5052 KB Output is correct
14 Correct 2 ms 4956 KB Output is correct
15 Correct 2 ms 4952 KB Output is correct
16 Correct 2 ms 4956 KB Output is correct
17 Correct 2 ms 4952 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 5168 KB Output is correct
20 Correct 2 ms 4956 KB Output is correct
21 Correct 2 ms 4952 KB Output is correct
22 Correct 2 ms 4956 KB Output is correct
23 Correct 2 ms 4956 KB Output is correct
24 Correct 2 ms 4956 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 2 ms 4952 KB Output is correct
27 Correct 2 ms 4952 KB Output is correct
28 Correct 2 ms 4956 KB Output is correct
29 Correct 3 ms 4956 KB Output is correct
30 Correct 2 ms 4956 KB Output is correct
31 Correct 2 ms 4956 KB Output is correct
32 Correct 2 ms 4956 KB Output is correct

Subtask #3
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 2 ms 5188 KB Output is correct
8 Correct 2 ms 5208 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 2 ms 4952 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 2 ms 4956 KB Output is correct
13 Correct 2 ms 5052 KB Output is correct
14 Correct 2 ms 4956 KB Output is correct
15 Correct 2 ms 4952 KB Output is correct
16 Correct 2 ms 4956 KB Output is correct
17 Correct 2 ms 4952 KB Output is correct
18 Correct 2 ms 4956 KB Output is correct
19 Correct 2 ms 5168 KB Output is correct
20 Correct 2 ms 4956 KB Output is correct
21 Correct 2 ms 4952 KB Output is correct
22 Correct 2 ms 4956 KB Output is correct
23 Correct 2 ms 4956 KB Output is correct
24 Correct 2 ms 4956 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 2 ms 4952 KB Output is correct
27 Correct 2 ms 4952 KB Output is correct
28 Correct 2 ms 4956 KB Output is correct
29 Correct 3 ms 4956 KB Output is correct
30 Correct 2 ms 4956 KB Output is correct
31 Correct 2 ms 4956 KB Output is correct
32 Correct 2 ms 4956 KB Output is correct
33 Correct 3 ms 5212 KB Output is correct
34 Correct 3 ms 5212 KB Output is correct
35 Correct 2 ms 5212 KB Output is correct
36 Correct 3 ms 5432 KB Output is correct
37 Correct 3 ms 5204 KB Output is correct
38 Correct 3 ms 5144 KB Output is correct
39 Correct 4 ms 5212 KB Output is correct
40 Correct 4 ms 5468 KB Output is correct
41 Correct 3 ms 5248 KB Output is correct
42 Correct 3 ms 5176 KB Output is correct
43 Correct 4 ms 5468 KB Output is correct
44 Correct 3 ms 5212 KB Output is correct
45 Correct 3 ms 5212 KB Output is correct
46 Correct 3 ms 5272 KB Output is correct
47 Correct 3 ms 5212 KB Output is correct
48 Correct 3 ms 5172 KB Output is correct
49 Correct 3 ms 5208 KB Output is correct
50 Correct 3 ms 5212 KB Output is correct
51 Correct 4 ms 5212 KB Output is correct
52 Correct 3 ms 5212 KB Output is correct
53 Correct 3 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 5212 KB Output is correct
57 Correct 3 ms 5176 KB Output is correct
58 Correct 3 ms 5212 KB Output is correct

Subtask #4
47.0 / 47.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 2 ms 4956 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 3 ms 5180 KB Output is correct
6 Correct 3 ms 5212 KB Output is correct
7 Correct 50 ms 20436 KB Output is correct
8 Correct 65 ms 20556 KB Output is correct
9 Correct 62 ms 23792 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 3 ms 5212 KB Output is correct
13 Correct 3 ms 5208 KB Output is correct
14 Correct 32 ms 14172 KB Output is correct
15 Correct 106 ms 19536 KB Output is correct
16 Correct 2 ms 4952 KB Output is correct
17 Correct 3 ms 5212 KB Output is correct
18 Correct 71 ms 17820 KB Output is correct
19 Correct 2 ms 4952 KB Output is correct
20 Correct 4 ms 4956 KB Output is correct
21 Correct 2 ms 5208 KB Output is correct
22 Correct 3 ms 5180 KB Output is correct
23 Correct 35 ms 14332 KB Output is correct
24 Correct 104 ms 19500 KB Output is correct
25 Correct 2 ms 4956 KB Output is correct
26 Correct 3 ms 5720 KB Output is correct
27 Correct 75 ms 26780 KB Output is correct
28 Correct 52 ms 17500 KB Output is correct
29 Correct 77 ms 15444 KB Output is correct
30 Correct 2 ms 4952 KB Output is correct
31 Correct 2 ms 4956 KB Output is correct
32 Correct 2 ms 4956 KB Output is correct
33 Correct 2 ms 4956 KB Output is correct
34 Correct 2 ms 4956 KB Output is correct
35 Correct 2 ms 4956 KB Output is correct
36 Correct 2 ms 5188 KB Output is correct
37 Correct 2 ms 5208 KB Output is correct
38 Correct 2 ms 4956 KB Output is correct
39 Correct 2 ms 4952 KB Output is correct
40 Correct 2 ms 4956 KB Output is correct
41 Correct 2 ms 4956 KB Output is correct
42 Correct 2 ms 5052 KB Output is correct
43 Correct 2 ms 4956 KB Output is correct
44 Correct 2 ms 4952 KB Output is correct
45 Correct 2 ms 4956 KB Output is correct
46 Correct 2 ms 4952 KB Output is correct
47 Correct 2 ms 4956 KB Output is correct
48 Correct 2 ms 5168 KB Output is correct
49 Correct 2 ms 4956 KB Output is correct
50 Correct 2 ms 4952 KB Output is correct
51 Correct 2 ms 4956 KB Output is correct
52 Correct 2 ms 4956 KB Output is correct
53 Correct 2 ms 4956 KB Output is correct
54 Correct 2 ms 4956 KB Output is correct
55 Correct 2 ms 4952 KB Output is correct
56 Correct 2 ms 4952 KB Output is correct
57 Correct 2 ms 4956 KB Output is correct
58 Correct 3 ms 4956 KB Output is correct
59 Correct 2 ms 4956 KB Output is correct
60 Correct 2 ms 4956 KB Output is correct
61 Correct 2 ms 4956 KB Output is correct
62 Correct 3 ms 5212 KB Output is correct
63 Correct 3 ms 5212 KB Output is correct
64 Correct 2 ms 5212 KB Output is correct
65 Correct 3 ms 5432 KB Output is correct
66 Correct 3 ms 5204 KB Output is correct
67 Correct 3 ms 5144 KB Output is correct
68 Correct 4 ms 5212 KB Output is correct
69 Correct 4 ms 5468 KB Output is correct
70 Correct 3 ms 5248 KB Output is correct
71 Correct 3 ms 5176 KB Output is correct
72 Correct 4 ms 5468 KB Output is correct
73 Correct 3 ms 5212 KB Output is correct
74 Correct 3 ms 5212 KB Output is correct
75 Correct 3 ms 5272 KB Output is correct
76 Correct 3 ms 5212 KB Output is correct
77 Correct 3 ms 5172 KB Output is correct
78 Correct 3 ms 5208 KB Output is correct
79 Correct 3 ms 5212 KB Output is correct
80 Correct 4 ms 5212 KB Output is correct
81 Correct 3 ms 5212 KB Output is correct
82 Correct 3 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 5212 KB Output is correct
86 Correct 3 ms 5176 KB Output is correct
87 Correct 3 ms 5212 KB Output is correct
88 Correct 74 ms 20660 KB Output is correct
89 Correct 78 ms 20536 KB Output is correct
90 Correct 80 ms 20524 KB Output is correct
91 Correct 40 ms 14208 KB Output is correct
92 Correct 40 ms 14168 KB Output is correct
93 Correct 36 ms 15132 KB Output is correct
94 Correct 36 ms 14928 KB Output is correct
95 Correct 162 ms 21672 KB Output is correct
96 Correct 111 ms 21500 KB Output is correct
97 Correct 135 ms 19300 KB Output is correct
98 Correct 121 ms 19280 KB Output is correct
99 Correct 62 ms 19280 KB Output is correct
100 Correct 64 ms 19280 KB Output is correct
101 Correct 42 ms 14164 KB Output is correct
102 Correct 43 ms 14160 KB Output is correct
103 Correct 36 ms 14940 KB Output is correct
104 Correct 47 ms 14932 KB Output is correct
105 Correct 139 ms 21696 KB Output is correct
106 Correct 131 ms 21700 KB Output is correct
107 Correct 146 ms 28024 KB Output is correct
108 Correct 139 ms 28160 KB Output is correct
109 Correct 72 ms 18772 KB Output is correct
110 Correct 78 ms 18640 KB Output is correct
111 Correct 84 ms 16692 KB Output is correct
112 Correct 81 ms 16592 KB Output is correct