oj.uz

Submission #790154

# Submission time Handle Problem Language Result Execution time Memory
790154 2023-07-22T11:16:54 Z VMaksimoski008 Autobus (COCI22_autobus) C++14
70 / 70
 344 ms 10072 KB 
#include <bits/stdc++.h>
 
#define pb push_back
#define eb emplace_back
#define sz(x) (int)x.size()
#define all(x) x.begin(), x.end()
#define uniq(x) x.erase(unique(all(x)), x.end())
#define rall(x) x.rbegin(), x.rend()
#define each(x, v) for(auto &x : v)
#define mp make_pair
 
using namespace std;
 
using ll = long long;
using ull = unsigned long long;
using ld = long double;
using str = string;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using Node = array<ll, 3>;
 
const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;
 
void setIO() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
}
 
int32_t main() {
    setIO();
 
    int n, m;
    cin >> n >> m;
    vector<vector<pii> > graph(n+1);
    int mat[n+1][n+1];
    memset(mat, 0, sizeof(mat));
    for(int i=0; i<m; i++) {
        int a, b, w;
        cin >> a >> b >> w;
        if(mat[a][b] == 0) mat[a][b] = w;
        else mat[a][b] = min(mat[a][b], w);
    }

    for(int i=1; i<=n; i++)
        for(int j=1; j<=n; j++)
            if(mat[i][j] != 0)
                graph[i].pb({ j, mat[i][j] });
 
    int k, q;
    cin >> k >> q;
    k = min(k, n);
    vector<vector<ll> > ans(n+1, vector<ll>(n+1, 1e18));
    vector<vector<vector<ll> > > dist(n+1, vector<vector<ll>>(n+1, vector<ll>(k+1, 1e18)));
    priority_queue<Node, vector<Node>, greater<Node> > pq;

    for(int i=1; i<=n; i++) {
        dist[i][i][0] = 0;
        bool vis[n+1][k+1];
        memset(vis, 0, sizeof(vis));
        pq.push({ 0, 0, i });

        while(!pq.empty()) {
            ll d = pq.top().at(0);
            int c = pq.top().at(1);
            int u = pq.top().at(2);
            pq.pop();

            if(vis[u][c]) continue;
            vis[u][c] = true;

            if(c == k) continue;
            for(pii &v : graph[u]) {
                if(dist[i][v.first][c+1] > dist[i][u][c] + v.second) {
                    dist[i][v.first][c+1] = dist[i][u][c] + v.second;
                    if(vis[v.first][c+1]) continue;
                    pq.push({ dist[i][v.first][c+1], c+1, v.first });
                }
            }
        }

        for(int j=1; j<=n; j++) {
            for(int x=0; x<k+1; x++) {
                ans[i][j] = min(ans[i][j], dist[i][j][x]);
            }
        }
    }

    
    while(q--) {
        int a, b;
        cin >> a >> b;
        cout << (ans[a][b] == 1e18 ? -1 : ans[a][b]) << '\n';
    }
    return 0;
}

Compilation message

Main.cpp: In function 'int32_t main()':
Main.cpp:66:16: warning: unused variable 'd' [-Wunused-variable]
   66 |             ll d = pq.top().at(0);
      |                ^

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 2 ms 724 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 4 ms 724 KB Output is correct
6 Correct 4 ms 724 KB Output is correct
7 Correct 6 ms 804 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 25 ms 1652 KB Output is correct
8 Correct 79 ms 3468 KB Output is correct
9 Correct 5 ms 724 KB Output is correct
10 Correct 67 ms 2252 KB Output is correct
11 Correct 27 ms 980 KB Output is correct
12 Correct 130 ms 2732 KB Output is correct
13 Correct 78 ms 828 KB Output is correct
14 Correct 84 ms 864 KB Output is correct
15 Correct 273 ms 3276 KB Output is correct
16 Correct 137 ms 7732 KB Output is correct
17 Correct 83 ms 6964 KB Output is correct
18 Correct 75 ms 6976 KB Output is correct
19 Correct 259 ms 9912 KB Output is correct
20 Correct 165 ms 8468 KB Output is correct
21 Correct 75 ms 6976 KB Output is correct
22 Correct 104 ms 7500 KB Output is correct
23 Correct 110 ms 7352 KB Output is correct
24 Correct 168 ms 8380 KB Output is correct
25 Correct 78 ms 7108 KB Output is correct
26 Correct 120 ms 7608 KB Output is correct
27 Correct 149 ms 8036 KB Output is correct
28 Correct 128 ms 7788 KB Output is correct
29 Correct 80 ms 6968 KB Output is correct
30 Correct 113 ms 7480 KB Output is correct
31 Correct 193 ms 8708 KB Output is correct
32 Correct 344 ms 10048 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 2 ms 596 KB Output is correct
9 Correct 2 ms 724 KB Output is correct
10 Correct 2 ms 596 KB Output is correct
11 Correct 4 ms 724 KB Output is correct
12 Correct 4 ms 724 KB Output is correct
13 Correct 6 ms 804 KB Output is correct
14 Correct 25 ms 1652 KB Output is correct
15 Correct 79 ms 3468 KB Output is correct
16 Correct 5 ms 724 KB Output is correct
17 Correct 67 ms 2252 KB Output is correct
18 Correct 27 ms 980 KB Output is correct
19 Correct 130 ms 2732 KB Output is correct
20 Correct 78 ms 828 KB Output is correct
21 Correct 84 ms 864 KB Output is correct
22 Correct 273 ms 3276 KB Output is correct
23 Correct 137 ms 7732 KB Output is correct
24 Correct 83 ms 6964 KB Output is correct
25 Correct 75 ms 6976 KB Output is correct
26 Correct 259 ms 9912 KB Output is correct
27 Correct 165 ms 8468 KB Output is correct
28 Correct 75 ms 6976 KB Output is correct
29 Correct 104 ms 7500 KB Output is correct
30 Correct 110 ms 7352 KB Output is correct
31 Correct 168 ms 8380 KB Output is correct
32 Correct 78 ms 7108 KB Output is correct
33 Correct 120 ms 7608 KB Output is correct
34 Correct 149 ms 8036 KB Output is correct
35 Correct 128 ms 7788 KB Output is correct
36 Correct 80 ms 6968 KB Output is correct
37 Correct 113 ms 7480 KB Output is correct
38 Correct 193 ms 8708 KB Output is correct
39 Correct 344 ms 10048 KB Output is correct
40 Correct 18 ms 1420 KB Output is correct
41 Correct 74 ms 3476 KB Output is correct
42 Correct 16 ms 992 KB Output is correct
43 Correct 146 ms 3504 KB Output is correct
44 Correct 26 ms 1180 KB Output is correct
45 Correct 224 ms 4012 KB Output is correct
46 Correct 89 ms 6988 KB Output is correct
47 Correct 189 ms 8376 KB Output is correct
48 Correct 116 ms 7480 KB Output is correct
49 Correct 316 ms 10008 KB Output is correct
50 Correct 80 ms 6968 KB Output is correct
51 Correct 120 ms 7656 KB Output is correct
52 Correct 76 ms 6960 KB Output is correct
53 Correct 264 ms 9816 KB Output is correct
54 Correct 81 ms 7084 KB Output is correct
55 Correct 85 ms 7116 KB Output is correct
56 Correct 248 ms 9480 KB Output is correct
57 Correct 268 ms 9720 KB Output is correct
58 Correct 76 ms 6988 KB Output is correct
59 Correct 170 ms 8268 KB Output is correct
60 Correct 262 ms 9368 KB Output is correct
61 Correct 323 ms 9912 KB Output is correct
62 Correct 85 ms 6844 KB Output is correct
63 Correct 122 ms 7612 KB Output is correct
64 Correct 139 ms 7944 KB Output is correct
65 Correct 323 ms 10072 KB Output is correct