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Submission #993970

# Submission time Handle Problem Language Result Execution time Memory
993970 2024-06-06T23:02:28 Z MarwenElarbi Stranded Far From Home (BOI22_island) C++17
100 / 100
 225 ms 45728 KB 
#include <bits/stdc++.h>
using namespace std;
#define fi first
#define se second
#define ll long long
#define pb push_back
#define ii pair<int,int>
const int nax=2e5+5;
vector<int> adj[nax];
vector<int> newadj[nax];
int tab[nax];
int parent[nax];
long long sz[nax];
int ans[nax];
int vis[nax];
int find(int x){
    if(parent[x]==x) return x;
    return parent[x]=find(parent[x]);
}
bool sameset(int x,int y){
    return find(x)==find(y);
}
void joinset(int x,int y){
    x=find(x);
    y=find(y);
    parent[x]=y;
    sz[y]+=sz[x];
}
bool compare(int x,int y){
    if(tab[x]!=tab[y]) return tab[x]>tab[y];
    else return x>y;
}
void dfs(int x,int p){
    //cout <<newadj[x].size()<<endl;
    for(auto u:newadj[x]){
        if(u==p) continue;
        if(sz[u]<tab[x]) continue;
        ans[u]=1;
        dfs(u,x);
    }
}
int main(){
    int n,m;
    cin>>n>>m;
    vector<pair<int,int>> cur(n);
    for (int i = 0; i < n; ++i)
    {
        parent[i]=i;
        cin>>tab[i];
        sz[i]=tab[i];
        cur[i]={tab[i],i};
    }
    for (int i = 0; i < m; ++i)
    {
        int x,y;
        cin>>x>>y;
        x--;y--;
        adj[x].pb(y);
        adj[y].pb(x);
    }
    sort(cur.begin(),cur.end());
    for (int i = 0; i < n; ++i)
    {
        sort(adj[i].begin(),adj[i].end(),compare);
    }
    for (int t = 0; t < n; ++t)
    {
        int i=cur[t].se;
        vis[i]=true;
        for(auto u:adj[i]){
            u=find(u);
            //cout <<i<<" "<<u<<endl;
            if(!vis[u]||sameset(i,u)) continue;
            //cout <<i<<" "<<u<<" "<<sz[u]<<" "<<tab[i]<<endl;
            if(sz[u]>=tab[i]){
                newadj[i].pb(u);
            }
            joinset(u,i);
        }
        sz[i]=sz[find(i)];
    }
    ans[cur[n-1].se]=true;
    dfs(cur[n-1].se,-1);
    for (int i = 0; i < n; ++i)
    {
        cout <<ans[i];
    }cout <<endl;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14168 KB Output is correct
2 Correct 3 ms 14172 KB Output is correct
3 Correct 2 ms 14172 KB Output is correct
4 Correct 4 ms 14408 KB Output is correct
5 Correct 5 ms 14360 KB Output is correct
6 Correct 5 ms 14424 KB Output is correct
7 Correct 4 ms 14428 KB Output is correct
8 Correct 4 ms 14428 KB Output is correct
9 Correct 4 ms 14428 KB Output is correct
10 Correct 4 ms 14428 KB Output is correct
11 Correct 4 ms 14428 KB Output is correct
12 Correct 4 ms 14436 KB Output is correct
13 Correct 4 ms 14428 KB Output is correct
14 Correct 4 ms 14264 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14172 KB Output is correct
2 Correct 2 ms 14172 KB Output is correct
3 Correct 175 ms 31060 KB Output is correct
4 Correct 155 ms 30036 KB Output is correct
5 Correct 164 ms 24916 KB Output is correct
6 Correct 168 ms 25256 KB Output is correct
7 Correct 165 ms 25380 KB Output is correct
8 Correct 200 ms 41300 KB Output is correct
9 Correct 159 ms 23856 KB Output is correct
10 Correct 149 ms 23240 KB Output is correct
11 Correct 188 ms 42004 KB Output is correct
12 Correct 148 ms 29524 KB Output is correct
13 Correct 137 ms 31320 KB Output is correct
14 Correct 193 ms 31060 KB Output is correct
15 Correct 171 ms 41300 KB Output is correct
16 Correct 147 ms 41040 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 14168 KB Output is correct
2 Correct 178 ms 24856 KB Output is correct
3 Correct 189 ms 29264 KB Output is correct
4 Correct 189 ms 45588 KB Output is correct
5 Correct 139 ms 32340 KB Output is correct
6 Correct 193 ms 29272 KB Output is correct
7 Correct 190 ms 45604 KB Output is correct
8 Correct 185 ms 45652 KB Output is correct
9 Correct 145 ms 44624 KB Output is correct
10 Correct 151 ms 35604 KB Output is correct
11 Correct 144 ms 29264 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14168 KB Output is correct
2 Correct 203 ms 25936 KB Output is correct
3 Correct 195 ms 29776 KB Output is correct
4 Correct 199 ms 30036 KB Output is correct
5 Correct 225 ms 30988 KB Output is correct
6 Correct 179 ms 31940 KB Output is correct
7 Correct 175 ms 38340 KB Output is correct
8 Correct 132 ms 38196 KB Output is correct
9 Correct 128 ms 24404 KB Output is correct
10 Correct 153 ms 29476 KB Output is correct
11 Correct 147 ms 29240 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 14168 KB Output is correct
2 Correct 3 ms 14172 KB Output is correct
3 Correct 2 ms 14172 KB Output is correct
4 Correct 4 ms 14408 KB Output is correct
5 Correct 5 ms 14360 KB Output is correct
6 Correct 5 ms 14424 KB Output is correct
7 Correct 4 ms 14428 KB Output is correct
8 Correct 4 ms 14428 KB Output is correct
9 Correct 4 ms 14428 KB Output is correct
10 Correct 4 ms 14428 KB Output is correct
11 Correct 4 ms 14428 KB Output is correct
12 Correct 4 ms 14436 KB Output is correct
13 Correct 4 ms 14428 KB Output is correct
14 Correct 4 ms 14264 KB Output is correct
15 Correct 3 ms 14172 KB Output is correct
16 Correct 2 ms 14172 KB Output is correct
17 Correct 175 ms 31060 KB Output is correct
18 Correct 155 ms 30036 KB Output is correct
19 Correct 164 ms 24916 KB Output is correct
20 Correct 168 ms 25256 KB Output is correct
21 Correct 165 ms 25380 KB Output is correct
22 Correct 200 ms 41300 KB Output is correct
23 Correct 159 ms 23856 KB Output is correct
24 Correct 149 ms 23240 KB Output is correct
25 Correct 188 ms 42004 KB Output is correct
26 Correct 148 ms 29524 KB Output is correct
27 Correct 137 ms 31320 KB Output is correct
28 Correct 193 ms 31060 KB Output is correct
29 Correct 171 ms 41300 KB Output is correct
30 Correct 147 ms 41040 KB Output is correct
31 Correct 3 ms 14168 KB Output is correct
32 Correct 178 ms 24856 KB Output is correct
33 Correct 189 ms 29264 KB Output is correct
34 Correct 189 ms 45588 KB Output is correct
35 Correct 139 ms 32340 KB Output is correct
36 Correct 193 ms 29272 KB Output is correct
37 Correct 190 ms 45604 KB Output is correct
38 Correct 185 ms 45652 KB Output is correct
39 Correct 145 ms 44624 KB Output is correct
40 Correct 151 ms 35604 KB Output is correct
41 Correct 144 ms 29264 KB Output is correct
42 Correct 2 ms 14168 KB Output is correct
43 Correct 203 ms 25936 KB Output is correct
44 Correct 195 ms 29776 KB Output is correct
45 Correct 199 ms 30036 KB Output is correct
46 Correct 225 ms 30988 KB Output is correct
47 Correct 179 ms 31940 KB Output is correct
48 Correct 175 ms 38340 KB Output is correct
49 Correct 132 ms 38196 KB Output is correct
50 Correct 128 ms 24404 KB Output is correct
51 Correct 153 ms 29476 KB Output is correct
52 Correct 147 ms 29240 KB Output is correct
53 Correct 3 ms 14168 KB Output is correct
54 Correct 3 ms 14172 KB Output is correct
55 Correct 2 ms 14172 KB Output is correct
56 Correct 6 ms 14424 KB Output is correct
57 Correct 4 ms 14472 KB Output is correct
58 Correct 4 ms 14428 KB Output is correct
59 Correct 4 ms 14428 KB Output is correct
60 Correct 4 ms 14428 KB Output is correct
61 Correct 4 ms 14428 KB Output is correct
62 Correct 4 ms 14428 KB Output is correct
63 Correct 4 ms 14428 KB Output is correct
64 Correct 4 ms 14364 KB Output is correct
65 Correct 3 ms 14428 KB Output is correct
66 Correct 4 ms 14428 KB Output is correct
67 Correct 169 ms 35348 KB Output is correct
68 Correct 140 ms 32984 KB Output is correct
69 Correct 170 ms 29012 KB Output is correct
70 Correct 172 ms 29524 KB Output is correct
71 Correct 172 ms 29588 KB Output is correct
72 Correct 190 ms 45728 KB Output is correct
73 Correct 157 ms 28132 KB Output is correct
74 Correct 154 ms 26824 KB Output is correct
75 Correct 181 ms 45332 KB Output is correct
76 Correct 148 ms 32340 KB Output is correct
77 Correct 131 ms 34132 KB Output is correct
78 Correct 147 ms 34128 KB Output is correct
79 Correct 168 ms 45652 KB Output is correct
80 Correct 148 ms 44628 KB Output is correct
81 Correct 183 ms 29268 KB Output is correct
82 Correct 191 ms 29264 KB Output is correct
83 Correct 189 ms 45648 KB Output is correct
84 Correct 130 ms 32376 KB Output is correct
85 Correct 190 ms 29268 KB Output is correct
86 Correct 190 ms 45648 KB Output is correct
87 Correct 187 ms 45656 KB Output is correct
88 Correct 165 ms 35664 KB Output is correct
89 Correct 146 ms 29056 KB Output is correct
90 Correct 202 ms 30292 KB Output is correct
91 Correct 198 ms 29776 KB Output is correct
92 Correct 198 ms 30088 KB Output is correct
93 Correct 196 ms 31060 KB Output is correct
94 Correct 179 ms 31936 KB Output is correct
95 Correct 173 ms 38408 KB Output is correct
96 Correct 132 ms 38228 KB Output is correct
97 Correct 127 ms 24404 KB Output is correct
98 Correct 145 ms 29264 KB Output is correct
99 Correct 147 ms 29264 KB Output is correct
100 Correct 81 ms 18772 KB Output is correct
101 Correct 211 ms 29712 KB Output is correct
102 Correct 178 ms 31824 KB Output is correct
103 Correct 188 ms 31316 KB Output is correct
104 Correct 199 ms 30548 KB Output is correct