Submission #892318

#	Time	Username	Problem	Language	Result	Execution time	Memory
892318		vjudge1	Sprinkler (JOI22_sprinkler)	C++17	3 / 100	200 ms	24148 KiB

sprinkler

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(), x.end()
#define size(x) (int)x.size()

template<class S, class T>
bool chmin(S &a, const T &b) {
    return a > b && (a = b) == b;
}
template<class S, class T>
bool chmax(S &a, const T &b) {
    return a < b && (a = b) == b;
}
const int inf = 1e9 + 7;
const int INF = 1e18 + 7;
const int mod = 998244353;
const int N = 2e5 + 1;

int n, l;
vector<int> g[N];
vector<int> p(N);
int h[N], cnt[N];

void dfs(int v, int parent, int d, int bound, int w) {
    h[v] *= w;
    h[v] %= l;
    if (d == bound) return;
    for (int to : g[v]) {
        if (to != parent) {
            dfs(to, v, d + 1, bound, w);
        }
    }
}

void walk(int v, int parent) {
    p[v] = parent;
    for (int to : g[v]) {
        if (to != parent) {
            walk(to, v);
        }
    }
}

signed main() {
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> n >> l;
    for (int i = 1; i < n; ++i) {
        int a, b;
        cin >> a >> b;
        g[a].push_back(b);
        g[b].push_back(a);
    }
    cnt[0] = 1;
    for (int i = 1; i <= n; ++i) {
        cin >> h[i];
        cnt[i] = 1;
    }
    int q;
    cin >> q;
    if (n <= 1000 && q <= 1000) {
        while (q--) {
            int t;
            cin >> t;
            if (t == 1) {
                int v, d, w;
                cin >> v >> d >> w;
                dfs(v, -1, 0, d, w);
            } else {
                int v;
                cin >> v;
                cout << h[v] << '\n';
            }
        }
    } else {
        walk(1, 0);
        while (q--) {
            int t;
            cin >> t;
            if (t == 1) {
                int v, d, w;
                cin >> v >> d >> w;
                if (d == 0) {
                    h[v] *= w;
                    h[v] %= l;
                } else {
                    cnt[p[v]] *= w;
                    cnt[p[v]] %= l;
                }
            } else {
                int v;
                cin >> v;
                int res = h[v];
                if (p[p[v]] != p[v]) {
                    res *= cnt[p[p[v]]];
                    res %= l;
                }
                res *= cnt[p[v]];
                res %= mod;
                res *= cnt[v];
                res %= mod;
                cout << res << '\n';
            }
        }
    }
}

• Subtask 1: 3 / 3
• Subtask 2: 0 / 9
• Subtask 3: 0 / 29
• Subtask 4: 0 / 12
• Subtask 5: 0 / 30
• Subtask 6: 0 / 17