oj.uz

Submission #533477

# Submission time Handle Problem Language Result Execution time Memory
533477 2022-03-06T06:37:58 Z N1NT3NDO Autobus (COCI22_autobus) C++14
70 / 70
 505 ms 9944 KB 
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#define sz(x) (int)x.size()
#define fi first
#define sd second
#define all(x) x.begin(), x.end()
//#pragma GCC target ("avx2")
//#pragma GCC optimization ("O3")
//#pragma GCC optimization ("unroll-loops")

using namespace std;
//using namespace __gnu_pbds;

//typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

const int N = 75;
//vector< pair<int, int> > g[N];
int n, m, q, k, F;
bool used[N];
ll dst[N][N][N], g[N][N];

/*
void dfs(int v, int skok, ll sum)
{
    if (skok > k || sum > ans) return;

    if (v == F)
    {
        ans = min(ans, sum);
        return;
    }

    for(auto [u, w] : g[v])
    {
        dfs(u, skok + 1, sum + w);
    }
}
*/

void calc(int x)
{
    for(int i = 1; i <= n; i++)
      for(int j = 0; j <= k; j++)
        dst[x][i][j] = 1e18;
    dst[x][x][0] = 0;
    set< pair<ll, pair<int, int> > > se;


    se.insert({0, {0, x}});

    while(sz(se) > 0)
    {
        auto c = *se.begin(); se.erase(se.begin());
        ll d = c.fi;
        int v = c.sd.sd, skok = c.sd.fi;

        if (dst[x][v][skok] < d) continue;

        for(int u = 1; u <= n; u++)
        {
            if (g[v][u] == 1e18) continue;
            ll w = g[v][u];
            if (skok + 1 <= k && dst[x][v][skok] + w < dst[x][u][skok + 1])
            {
                dst[x][u][skok + 1] = dst[x][v][skok] + w;
                se.insert({dst[x][u][skok + 1], {skok + 1, u}});
            }
        }
    }

}

int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n >> m;

    for(int i = 1; i <= n; i++)
      for(int j = 1; j <= n; j++)
        g[i][j] = 1e18;

    for(int i = 1; i <= m; i++)
    {
        int u, v;
        ll z;
        cin >> u >> v >> z;
        g[u][v] = min(g[u][v], z);
    }


    cin >> k >> q;

    k = min(k, n);

    for(int i = 1; i <= n; i++)
      calc(i);

    while(q--)
    {
        int S;
        cin >> S >> F;
        ll ans = 1e18;

        for(int i = 0; i <= k; i++) ans = min(ans, dst[S][F][i]);

        if (ans == 1e18) cout << -1 << '\n';
        else cout << ans << '\n';
    }

}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 3404 KB Output is correct
2 Correct 3 ms 3404 KB Output is correct
3 Correct 6 ms 3404 KB Output is correct
4 Correct 6 ms 3580 KB Output is correct
5 Correct 9 ms 3376 KB Output is correct
6 Correct 9 ms 3404 KB Output is correct
7 Correct 14 ms 3340 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 56 ms 3424 KB Output is correct
8 Correct 170 ms 3780 KB Output is correct
9 Correct 12 ms 3404 KB Output is correct
10 Correct 129 ms 3476 KB Output is correct
11 Correct 55 ms 3508 KB Output is correct
12 Correct 232 ms 3744 KB Output is correct
13 Correct 145 ms 3412 KB Output is correct
14 Correct 111 ms 3424 KB Output is correct
15 Correct 349 ms 4048 KB Output is correct
16 Correct 230 ms 9316 KB Output is correct
17 Correct 99 ms 5064 KB Output is correct
18 Correct 109 ms 7224 KB Output is correct
19 Correct 284 ms 7472 KB Output is correct
20 Correct 201 ms 8512 KB Output is correct
21 Correct 132 ms 7488 KB Output is correct
22 Correct 147 ms 8900 KB Output is correct
23 Correct 141 ms 8904 KB Output is correct
24 Correct 252 ms 7748 KB Output is correct
25 Correct 101 ms 7364 KB Output is correct
26 Correct 149 ms 6696 KB Output is correct
27 Correct 183 ms 3544 KB Output is correct
28 Correct 158 ms 3428 KB Output is correct
29 Correct 101 ms 3440 KB Output is correct
30 Correct 158 ms 7876 KB Output is correct
31 Correct 266 ms 9832 KB Output is correct
32 Correct 505 ms 9944 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 0 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 3 ms 3404 KB Output is correct
8 Correct 3 ms 3404 KB Output is correct
9 Correct 6 ms 3404 KB Output is correct
10 Correct 6 ms 3580 KB Output is correct
11 Correct 9 ms 3376 KB Output is correct
12 Correct 9 ms 3404 KB Output is correct
13 Correct 14 ms 3340 KB Output is correct
14 Correct 56 ms 3424 KB Output is correct
15 Correct 170 ms 3780 KB Output is correct
16 Correct 12 ms 3404 KB Output is correct
17 Correct 129 ms 3476 KB Output is correct
18 Correct 55 ms 3508 KB Output is correct
19 Correct 232 ms 3744 KB Output is correct
20 Correct 145 ms 3412 KB Output is correct
21 Correct 111 ms 3424 KB Output is correct
22 Correct 349 ms 4048 KB Output is correct
23 Correct 230 ms 9316 KB Output is correct
24 Correct 99 ms 5064 KB Output is correct
25 Correct 109 ms 7224 KB Output is correct
26 Correct 284 ms 7472 KB Output is correct
27 Correct 201 ms 8512 KB Output is correct
28 Correct 132 ms 7488 KB Output is correct
29 Correct 147 ms 8900 KB Output is correct
30 Correct 141 ms 8904 KB Output is correct
31 Correct 252 ms 7748 KB Output is correct
32 Correct 101 ms 7364 KB Output is correct
33 Correct 149 ms 6696 KB Output is correct
34 Correct 183 ms 3544 KB Output is correct
35 Correct 158 ms 3428 KB Output is correct
36 Correct 101 ms 3440 KB Output is correct
37 Correct 158 ms 7876 KB Output is correct
38 Correct 266 ms 9832 KB Output is correct
39 Correct 505 ms 9944 KB Output is correct
40 Correct 40 ms 3400 KB Output is correct
41 Correct 157 ms 3548 KB Output is correct
42 Correct 28 ms 3476 KB Output is correct
43 Correct 275 ms 3468 KB Output is correct
44 Correct 50 ms 3552 KB Output is correct
45 Correct 393 ms 4032 KB Output is correct
46 Correct 132 ms 4288 KB Output is correct
47 Correct 248 ms 7120 KB Output is correct
48 Correct 169 ms 6468 KB Output is correct
49 Correct 423 ms 9316 KB Output is correct
50 Correct 116 ms 7516 KB Output is correct
51 Correct 147 ms 7996 KB Output is correct
52 Correct 99 ms 8732 KB Output is correct
53 Correct 326 ms 8804 KB Output is correct
54 Correct 107 ms 7632 KB Output is correct
55 Correct 121 ms 6600 KB Output is correct
56 Correct 345 ms 9444 KB Output is correct
57 Correct 378 ms 6188 KB Output is correct
58 Correct 97 ms 9668 KB Output is correct
59 Correct 228 ms 9596 KB Output is correct
60 Correct 329 ms 9928 KB Output is correct
61 Correct 363 ms 9644 KB Output is correct
62 Correct 131 ms 9484 KB Output is correct
63 Correct 204 ms 9716 KB Output is correct
64 Correct 194 ms 4460 KB Output is correct
65 Correct 492 ms 8116 KB Output is correct