oj.uz

Submission #563669

# Submission time Handle Problem Language Result Execution time Memory
563669 2022-05-17T21:47:46 Z colossal_pepe Paths (BOI18_paths) C++17
70 / 100
 539 ms 315588 KB 
#include <iostream>
#include <vector>
using namespace std;

using ll = long long;

int n, m, k, c[300005];
ll dp[300005][5][5][5];
vector<vector<int>> g;

ll solve() {
    ll ans = 0;
    if (k < 2) return ans;
    for (int u = 0; u < n; u++) {
        for (int v : g[u]) {
            dp[u][c[v]][0][0]++;
        }
        for (int x = 1; x <= k; x++) {
            if (x == c[u]) continue;
            ans += dp[u][x][0][0];
        }
    }
    if (k < 3) return ans;
    for (int u = 0; u < n; u++) {
        for (int v : g[u]) {
            for (int x = 1; x <= k; x++) {
                dp[u][c[v]][x][0] += dp[v][x][0][0];
            }
        }
        for (int x = 1; x <= k; x++) {
            if (x == c[u]) continue;
            for (int y = 1; y <= k; y++) {
                if (y == c[u] or y == x) continue;
                ans += dp[u][x][y][0];
            }
        }
    }
    if (k < 4) return ans;
    for (int u = 0; u < n; u++) {
        for (int v : g[u]) {
            for (int x = 1; x <= k; x++) {
                for (int y = 1; y <= k; y++) {
                    dp[u][c[v]][x][y] += dp[v][x][y][0];
                }
            }
        }
        for (int x = 1; x <= k; x++) {
            if (x == c[u]) continue;
            for (int y = 1; y <= k; y++) {
                if (y == c[u] or y == x) continue;
                for (int z = 1; z <= k; z++) {
                    if (z == c[u] or z == x or z == y) continue;
                    ans += dp[u][x][y][z];
                }
            }
        }
    }
    return ans;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> m >> k;
    g.resize(n);
    for (int i = 0; i < n; i++) {
        cin >> c[i];
    }
    while (m--) {
        int u, v;
        cin >> u >> v;
        u--, v--;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    cout << solve() << endl;
    return 0;
}

Subtask #1
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 63 ms 8908 KB Output is correct
2 Correct 50 ms 4708 KB Output is correct
3 Correct 378 ms 310484 KB Output is correct
4 Correct 93 ms 34892 KB Output is correct
5 Correct 82 ms 5584 KB Output is correct
6 Correct 245 ms 208704 KB Output is correct
7 Correct 370 ms 310352 KB Output is correct
8 Correct 378 ms 310992 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 0 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 0 ms 212 KB Output is correct
10 Correct 0 ms 340 KB Output is correct
11 Correct 63 ms 8908 KB Output is correct
12 Correct 50 ms 4708 KB Output is correct
13 Correct 378 ms 310484 KB Output is correct
14 Correct 93 ms 34892 KB Output is correct
15 Correct 82 ms 5584 KB Output is correct
16 Correct 245 ms 208704 KB Output is correct
17 Correct 370 ms 310352 KB Output is correct
18 Correct 378 ms 310992 KB Output is correct
19 Correct 66 ms 11728 KB Output is correct
20 Correct 52 ms 6900 KB Output is correct
21 Correct 376 ms 314888 KB Output is correct
22 Correct 94 ms 38184 KB Output is correct
23 Correct 89 ms 8860 KB Output is correct
24 Correct 253 ms 212580 KB Output is correct
25 Correct 381 ms 314940 KB Output is correct
26 Correct 383 ms 315588 KB Output is correct
27 Correct 63 ms 6992 KB Output is correct
28 Correct 100 ms 15740 KB Output is correct
29 Correct 539 ms 314876 KB Output is correct
30 Correct 334 ms 161000 KB Output is correct
31 Correct 334 ms 161092 KB Output is correct
32 Correct 532 ms 314868 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 336 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 340 KB Output is correct
37 Correct 1 ms 340 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 1 ms 332 KB Output is correct
42 Correct 1 ms 340 KB Output is correct

Subtask #4
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 212 KB Output isn't correct
2 Halted 0 ms 0 KB -