Submission #765802

#	Time	Username	Problem	Language	Result	Execution time	Memory
765802		chanhchuong123	Džumbus (COCI19_dzumbus)	C++14	110 / 110	55 ms	17100 KiB

dzumbus

#include <bits/stdc++.h>
using namespace std;

template <typename T1, typename T2> bool minimize(T1 &a, T2 b) {
	if (a > b) {a = b; return true;} return false;
}

#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; ++i)
#define FORD(i, a, b) for (int i = (b), _a = (a); i >= _a; --i)
const int INF = 1e9 + 7;
const int MAX = 1010;
int n, m, q;
int D[MAX];
int sz[MAX];
int res[MAX];
bool vis[MAX];
vector<int> adj[MAX];
int dp[MAX][MAX][2][2];

void dfs(int u, int p) {
    FOR(j, 0, n) FOR(k, 0, 1) FOR(l, 0, 1) dp[u][j][k][l] = INF;
    sz[u] = 1;
    dp[u][0][0][0] = 0;
    dp[u][0][1][0] = D[u];
    for (int v: adj[u]) if (!vis[v]) {
        vis[v] = true; dfs(v, u);
        FORD(j, 0, sz[u]) FOR(k, 0, 1) FOR(l, 0, 1) {
            FORD(n, 0, sz[v]) FOR(m, 0, 1) FOR(p, 0, 1) {
                int J = j + n + (k & m) * (!l + !p), K = k, L = l | (k & m);
                minimize(dp[u][J][K][L], dp[u][j][k][l] + dp[v][n][m][p]);
            }
        }
        sz[u] += sz[v];
    }
}

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

    cin >> n >> m;
    for (int i = 1; i <= n; ++i) {
        cin >> D[i];
        adj[0].push_back(i);
    }
    for (int i = 1; i <= m; ++i) {
        int u, v; cin >> u >> v;
        adj[u].push_back(v);
        adj[v].push_back(u);
    }
    res[n + 1] = INF;
    D[0] = INF;
    vis[0] = 1;
    dfs(0, 0);
    FORD(j, 0, n) {
        res[j] = INF;
        FOR(k, 0, 1) FOR(l, 0, 1)
            minimize(res[j], dp[0][j][k][l]);
        minimize(res[j], res[j + 1]);
    }
    cin >> q; while (q--) {
        int S; cin >> S;
        cout << (upper_bound(res, res + 1 + n, S) - res - 1) << '\n';
    }
	return 0;
}

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 30 / 30
• Subtask 4: 30 / 30