Submission #954931

#	Time	Username	Problem	Language	Result	Execution time	Memory
954931		Lukap	Nestabilnost (COI23_nestabilnost)	C++14	41 / 100	201 ms	216840 KiB

code1

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int MAXN = 5e3 + 500;
const ll INF = 1e18;

int n;
int val[MAXN], fk[MAXN];
vector<int> susjedi[MAXN], v;
int d[MAXN], parent[MAXN];
ll dp[MAXN][MAXN], najm[MAXN];

void dfs (int x) {
    for (auto nx: susjedi[x]) {
        if (parent[x] == nx) continue;
        d[nx] = d[x] + 1;
        parent[nx] = x;
        dfs (nx);
    }
}

bool cmp (int x, int y) {
    return d[x] > d[y];
}

int main () {
    ios_base::sync_with_stdio (false);
    cin.tie (0);

    cin >> n;
    for (int i = 0; i < n; i++) cin >> val[i];
    for (int i = 0; i < n; i++) cin >> fk[i];

    for (int i = 0; i < n - 1; i++) {
        int a, b;
        cin >> a >> b;
        susjedi[a - 1].push_back (b - 1);
        susjedi[b - 1].push_back (a - 1);
    }

    dfs (0);
    for (int i = 0; i < n; i++) v.push_back (i);
    sort (v.begin (), v.end (), cmp);

    for (auto x: v) {
        for (int i = 0; i < n; i++) {
            if (val[x] > i) {
                dp[x][i] = INF;
                continue;
            }
            dp[x][i] = fk[i];
            for (auto nx: susjedi[x]) {
                if (parent[x] == nx) continue;
                if ((val[x] + 1 == val[nx] && val[nx] <= i) || (val[x] == i && val[nx] == 0)) dp[x][i] += min (dp[nx][i] - fk[i], najm[nx]);
                else dp[x][i] += najm[nx];
            }
        }
        najm[x] = INF;
        for (int i = 0; i < n; i++) najm[x] = min (najm[x], dp[x][i]);
    }

    cout << najm[0];

    return 0;
}

• Subtask 1: 12 / 12
• Subtask 2: 0 / 20
• Subtask 3: 7 / 7
• Subtask 4: 22 / 22
• Subtask 5: 0 / 39