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Submission #1090760

# Submission time Handle Problem Language Result Execution time Memory
1090760 2024-09-18T17:13:31 Z dpsaveslives Island (NOI18_island) C++17
100 / 100
 71 ms 17936 KB 
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const int MAXN = 2e5+10;
const int MN = 2e5+5;
vector<int> adj[MAXN];
int diff[MAXN],tree[MAXN];
void upd(int p, int x){
    while(p <= MN){
        tree[p] += x;
        p += p&(-p);
        //cout << p << "\n";
    }
}
int query(int p){
    int ret = 0;
    while(p > 0){
        ret += tree[p];
        p -= p&(-p);
    }
    return ret;
}
void dfs(int u, int p){
    for(auto v : adj[u]){
        if(v != p){
            dfs(v,u);
        }
    }
    int num = adj[u].size()-1;
    //cout << u << " " << num << "\n";
    if(num >= 2){
        upd(2,1);
        upd(num+1,-1);
    }
}
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int N,M; cin >> N >> M; //1 to N are leaves
    for(int i = 1;i<=N+M-1;++i){
        int u,v; cin >> u >> v;
        adj[u].push_back(v); adj[v].push_back(u);
    }
    dfs(N+1,0);
    for(int i = 2;i<=MN;++i){
        int q = query(i);
        if(q != 0){
            cout << i << " " << q << "\n";
        }
    }
    return 0;
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4952 KB Output is correct
2 Correct 3 ms 4952 KB Output is correct
3 Correct 53 ms 15340 KB Output is correct
4 Correct 63 ms 16320 KB Output is correct
5 Correct 15 ms 7384 KB Output is correct
6 Correct 71 ms 16324 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4956 KB Output is correct
2 Correct 3 ms 4956 KB Output is correct
3 Correct 3 ms 4956 KB Output is correct
4 Correct 4 ms 4956 KB Output is correct
5 Correct 3 ms 4956 KB Output is correct
6 Correct 4 ms 4956 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 4 ms 4956 KB Output is correct
9 Correct 3 ms 4956 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4952 KB Output is correct
2 Correct 4 ms 5208 KB Output is correct
3 Correct 4 ms 5208 KB Output is correct
4 Correct 3 ms 5164 KB Output is correct
5 Correct 3 ms 4956 KB Output is correct
6 Correct 3 ms 5212 KB Output is correct
7 Correct 5 ms 5212 KB Output is correct
8 Correct 4 ms 4956 KB Output is correct
9 Correct 4 ms 5212 KB Output is correct
10 Correct 4 ms 5212 KB Output is correct

Subtask #4
42.0 / 42.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4952 KB Output is correct
2 Correct 3 ms 4952 KB Output is correct
3 Correct 53 ms 15340 KB Output is correct
4 Correct 63 ms 16320 KB Output is correct
5 Correct 15 ms 7384 KB Output is correct
6 Correct 71 ms 16324 KB Output is correct
7 Correct 3 ms 4956 KB Output is correct
8 Correct 3 ms 4956 KB Output is correct
9 Correct 3 ms 4956 KB Output is correct
10 Correct 4 ms 4956 KB Output is correct
11 Correct 3 ms 4956 KB Output is correct
12 Correct 4 ms 4956 KB Output is correct
13 Correct 3 ms 4956 KB Output is correct
14 Correct 4 ms 4956 KB Output is correct
15 Correct 3 ms 4956 KB Output is correct
16 Correct 4 ms 4952 KB Output is correct
17 Correct 4 ms 5208 KB Output is correct
18 Correct 4 ms 5208 KB Output is correct
19 Correct 3 ms 5164 KB Output is correct
20 Correct 3 ms 4956 KB Output is correct
21 Correct 3 ms 5212 KB Output is correct
22 Correct 5 ms 5212 KB Output is correct
23 Correct 4 ms 4956 KB Output is correct
24 Correct 4 ms 5212 KB Output is correct
25 Correct 4 ms 5212 KB Output is correct
26 Correct 7 ms 5724 KB Output is correct
27 Correct 58 ms 15992 KB Output is correct
28 Correct 59 ms 16412 KB Output is correct
29 Correct 37 ms 12612 KB Output is correct
30 Correct 38 ms 14684 KB Output is correct
31 Correct 9 ms 6748 KB Output is correct
32 Correct 7 ms 6232 KB Output is correct
33 Correct 46 ms 13648 KB Output is correct
34 Correct 55 ms 17936 KB Output is correct
35 Correct 41 ms 15048 KB Output is correct
36 Correct 57 ms 14164 KB Output is correct
37 Correct 3 ms 4956 KB Output is correct