/ SeriousOJ /

Record Detail

Memory Exceeded


  
# Status Time Cost Memory Cost
#1 Accepted 2ms 492.0 KiB
#2 Wrong Answer 2ms 480.0 KiB
#3 Wrong Answer 2ms 328.0 KiB
#4 Wrong Answer 7ms 772.0 KiB
#5 Time Exceeded ≥1011ms ≥13.719 MiB
#6 Time Exceeded ≥1031ms ≥15.699 MiB
#7 Time Exceeded ≥1032ms ≥14.535 MiB
#8 Wrong Answer 42ms 776.0 KiB
#9 Wrong Answer 267ms 1.883 MiB
#10 Time Exceeded ≥1007ms ≥15.668 MiB
#11 Time Exceeded ≥1043ms ≥16.676 MiB
#12 Time Exceeded ≥1034ms ≥21.234 MiB
#13 Time Exceeded ≥1031ms ≥23.367 MiB
#14 Time Exceeded ≥1051ms ≥15.32 MiB
#15 Wrong Answer 242ms 3.832 MiB
#16 Time Exceeded ≥1052ms ≥19.785 MiB
#17 Time Exceeded ≥1029ms ≥21.684 MiB
#18 Time Exceeded ≥1093ms ≥19.953 MiB
#19 Time Exceeded ≥1075ms ≥16.453 MiB
#20 Time Exceeded ≥1023ms ≥17.156 MiB
#21 Time Exceeded ≥1011ms ≥17.184 MiB
#22 Memory Exceeded ≥359ms ≥256.016 MiB
#23 Time Exceeded ≥1063ms ≥42.828 MiB
#24 Time Exceeded ≥1036ms ≥38.98 MiB
#25 Time Exceeded ≥1046ms ≥40.387 MiB
#26 Wrong Answer 252ms 193.047 MiB

Code

#include<bits/stdc++.h>
using namespace std;
// #include <ext/pb_ds/assoc_container.hpp> 
// #include <ext/pb_ds/tree_policy.hpp> 
// using namespace __gnu_pbds;

// #define ordered_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define ll long long
#define all(v) (v).begin(), (v).end()
#define yes cout<<"YES"<<endl
#define no cout<<"NO"<<endl
#define F first 
#define S second

const ll M = 1e18 + 7;
const int N = 2e5 + 7;
const int MOD = 1e9 + 7;

int last_ver = 0;

int dfs(int node, int cost, vector<int> &vis, vector<int> check, vector<int> &depth, vector<int> adj[]) {
    vis[node] = 1;
    if(check[node]) last_ver = node;

    int tmp = 0;
    for(auto it: adj[node]) {
        if(!vis[it]) {
            depth[it] = depth[node] + 1;
            tmp += dfs(it,2,vis,check,depth,adj);
        }
    }

    if(tmp == 0 && !check[node]) return 0;

    return tmp + cost;
}

void Hrid_solve(){
    int n;
    cin >> n;

    int root = 0;
    vector<int> check(n), vis(n,0), depth(n,0);
    for(int i = 0; i < n; i++) {
        cin >> check[i];
        if(check[i]) root = i;
    } 

    vector<int> adj[n];
    for(int i = 0; i < n-1; i++) {
        int u,v;
        cin >> u >> v;
        u--, v--;

        adj[u].push_back(v);
        adj[v].push_back(u);
    }

    if(count(all(check),1)==0) {
        cout << 0 << endl;
        return;
    }

    int tmp = adj[0].size();
    int mx = 0;

    for(int i = 0; i < n; i++) {
        if(check[i]) {
            if(adj[i].size() <= tmp) root = i;
        }
    }


    int ans = dfs(root,0,vis,check,depth,adj);
    for(int i = 0; i < n; i++) {
        if(check[i]) {
            mx = max(mx, depth[i]);
        }
    }

    // cout << mx << endl;
    cout << ans-mx << endl;
    
    last_ver = 0;
    
}


/* ************** What defines us is how well we rise after we Fall !! ************** */

int32_t main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
 
    int tc = 1;
    cin >> tc;
    for(int kase = 1; kase <= tc; kase++){
        // cout << "Case " << kase << ": ";
        Hrid_solve();
    }

    return 0;
}

Information

Submit By
Type
Submission
Problem
P1078 Apple on Tree
Language
C++17 (G++ 13.2.0)
Submit At
2024-08-17 14:23:27
Judged At
2024-10-03 13:17:14
Judged By
Score
1
Total Time
≥1093ms
Peak Memory
≥256.016 MiB