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Submission #580075

# Submission time Handle Problem Language Result Execution time Memory
580075 2022-06-20T14:28:13 Z jasmin Stranded Far From Home (BOI22_island) C++17
100 / 100
 514 ms 82752 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long

struct graph{
    int n;
    vector<vector<int> > adi;
    vector<int> chef;
    vector<int> s;
    vector<set<int> > part;

    graph(int a, vector<int>& size){
        n=a;
        adi.resize(n);
        chef.resize(n);
        iota(chef.begin(), chef.end(), 0);
        s.resize(n);
        part.resize(n);
        for(int i=0; i<n; i++){
            s[i]=size[i];
            part[i].insert(i);
        }
    }

    int find(int a){
        if(chef[a]==a) return a;
        return chef[a]=find(chef[a]);
    }
    bool unite(int a, int b){
        if(find(a)==find(b)){
            return false;
        }
        if(s[find(a)]>s[find(b)]){
            swap(a, b);
        }
        s[find(b)]+=s[find(a)];
        for(auto e: part[find(a)]){
            part[find(b)].insert(e);
        }
        chef[find(a)]=find(b);
        return true;
    }
};

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    int n, m;
    cin >> n >> m;
    vector<int> size(n);
    vector<pair<int,int> > r(n);
    for(int i=0; i<n; i++){
        cin >> size[i];
        r[i]={size[i], i};
    }
    graph g(n, size);
    sort(r.begin(), r.end());
    for(int i=0; i<m; i++){
        int a, b;
        cin >> a >> b;
        g.adi[a-1].push_back(b-1);
        g.adi[b-1].push_back(a-1);
    }

    vector<int> tin(n);
    vector<bool> ans(n, true);
    for(int i=0; i<n; i++){

        int v=r[i].second;
        tin[v]=i;
        for(auto u: g.adi[v]){
            if(size[u]<=size[v]){

                if(g.s[g.find(u)]<size[v]){
                    for(auto e: g.part[g.find(u)]){
                        ans[e]=false;
                    }
                    g.part[g.find(u)].clear();
                }
                g.unite(u, v);
            }
        }
    }

    for(auto e: ans){
        cout << e;
    }
    cout << "\n";
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 3 ms 724 KB Output is correct
6 Correct 3 ms 724 KB Output is correct
7 Correct 3 ms 596 KB Output is correct
8 Correct 2 ms 596 KB Output is correct
9 Correct 2 ms 724 KB Output is correct
10 Correct 4 ms 852 KB Output is correct
11 Correct 2 ms 724 KB Output is correct
12 Correct 2 ms 852 KB Output is correct
13 Correct 2 ms 724 KB Output is correct
14 Correct 2 ms 724 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 211 ms 46464 KB Output is correct
4 Correct 225 ms 50100 KB Output is correct
5 Correct 293 ms 55172 KB Output is correct
6 Correct 307 ms 58356 KB Output is correct
7 Correct 334 ms 57552 KB Output is correct
8 Correct 350 ms 50116 KB Output is correct
9 Correct 263 ms 67148 KB Output is correct
10 Correct 177 ms 41200 KB Output is correct
11 Correct 288 ms 50580 KB Output is correct
12 Correct 279 ms 48204 KB Output is correct
13 Correct 193 ms 49040 KB Output is correct
14 Correct 214 ms 48960 KB Output is correct
15 Correct 199 ms 49048 KB Output is correct
16 Correct 150 ms 48500 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 356 ms 63820 KB Output is correct
3 Correct 394 ms 63776 KB Output is correct
4 Correct 225 ms 49000 KB Output is correct
5 Correct 211 ms 49020 KB Output is correct
6 Correct 403 ms 63244 KB Output is correct
7 Correct 232 ms 49048 KB Output is correct
8 Correct 249 ms 49168 KB Output is correct
9 Correct 147 ms 48488 KB Output is correct
10 Correct 167 ms 39652 KB Output is correct
11 Correct 221 ms 48016 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 376 ms 51000 KB Output is correct
3 Correct 377 ms 54140 KB Output is correct
4 Correct 399 ms 62388 KB Output is correct
5 Correct 484 ms 75296 KB Output is correct
6 Correct 441 ms 61620 KB Output is correct
7 Correct 247 ms 50620 KB Output is correct
8 Correct 142 ms 45904 KB Output is correct
9 Correct 195 ms 26208 KB Output is correct
10 Correct 503 ms 82636 KB Output is correct
11 Correct 242 ms 47960 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 2 ms 596 KB Output is correct
5 Correct 3 ms 724 KB Output is correct
6 Correct 3 ms 724 KB Output is correct
7 Correct 3 ms 596 KB Output is correct
8 Correct 2 ms 596 KB Output is correct
9 Correct 2 ms 724 KB Output is correct
10 Correct 4 ms 852 KB Output is correct
11 Correct 2 ms 724 KB Output is correct
12 Correct 2 ms 852 KB Output is correct
13 Correct 2 ms 724 KB Output is correct
14 Correct 2 ms 724 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 211 ms 46464 KB Output is correct
18 Correct 225 ms 50100 KB Output is correct
19 Correct 293 ms 55172 KB Output is correct
20 Correct 307 ms 58356 KB Output is correct
21 Correct 334 ms 57552 KB Output is correct
22 Correct 350 ms 50116 KB Output is correct
23 Correct 263 ms 67148 KB Output is correct
24 Correct 177 ms 41200 KB Output is correct
25 Correct 288 ms 50580 KB Output is correct
26 Correct 279 ms 48204 KB Output is correct
27 Correct 193 ms 49040 KB Output is correct
28 Correct 214 ms 48960 KB Output is correct
29 Correct 199 ms 49048 KB Output is correct
30 Correct 150 ms 48500 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 356 ms 63820 KB Output is correct
33 Correct 394 ms 63776 KB Output is correct
34 Correct 225 ms 49000 KB Output is correct
35 Correct 211 ms 49020 KB Output is correct
36 Correct 403 ms 63244 KB Output is correct
37 Correct 232 ms 49048 KB Output is correct
38 Correct 249 ms 49168 KB Output is correct
39 Correct 147 ms 48488 KB Output is correct
40 Correct 167 ms 39652 KB Output is correct
41 Correct 221 ms 48016 KB Output is correct
42 Correct 0 ms 212 KB Output is correct
43 Correct 376 ms 51000 KB Output is correct
44 Correct 377 ms 54140 KB Output is correct
45 Correct 399 ms 62388 KB Output is correct
46 Correct 484 ms 75296 KB Output is correct
47 Correct 441 ms 61620 KB Output is correct
48 Correct 247 ms 50620 KB Output is correct
49 Correct 142 ms 45904 KB Output is correct
50 Correct 195 ms 26208 KB Output is correct
51 Correct 503 ms 82636 KB Output is correct
52 Correct 242 ms 47960 KB Output is correct
53 Correct 0 ms 212 KB Output is correct
54 Correct 1 ms 212 KB Output is correct
55 Correct 0 ms 212 KB Output is correct
56 Correct 2 ms 596 KB Output is correct
57 Correct 2 ms 724 KB Output is correct
58 Correct 2 ms 724 KB Output is correct
59 Correct 2 ms 596 KB Output is correct
60 Correct 2 ms 596 KB Output is correct
61 Correct 2 ms 724 KB Output is correct
62 Correct 2 ms 852 KB Output is correct
63 Correct 2 ms 724 KB Output is correct
64 Correct 2 ms 852 KB Output is correct
65 Correct 2 ms 724 KB Output is correct
66 Correct 2 ms 724 KB Output is correct
67 Correct 195 ms 46492 KB Output is correct
68 Correct 204 ms 50108 KB Output is correct
69 Correct 336 ms 55172 KB Output is correct
70 Correct 335 ms 58304 KB Output is correct
71 Correct 334 ms 57548 KB Output is correct
72 Correct 330 ms 50052 KB Output is correct
73 Correct 286 ms 67248 KB Output is correct
74 Correct 193 ms 41148 KB Output is correct
75 Correct 285 ms 50744 KB Output is correct
76 Correct 313 ms 48320 KB Output is correct
77 Correct 190 ms 49056 KB Output is correct
78 Correct 198 ms 49052 KB Output is correct
79 Correct 199 ms 48976 KB Output is correct
80 Correct 147 ms 48520 KB Output is correct
81 Correct 369 ms 63904 KB Output is correct
82 Correct 364 ms 63780 KB Output is correct
83 Correct 219 ms 49056 KB Output is correct
84 Correct 229 ms 49072 KB Output is correct
85 Correct 357 ms 63376 KB Output is correct
86 Correct 228 ms 49040 KB Output is correct
87 Correct 239 ms 49044 KB Output is correct
88 Correct 178 ms 39676 KB Output is correct
89 Correct 215 ms 48040 KB Output is correct
90 Correct 371 ms 51024 KB Output is correct
91 Correct 359 ms 54224 KB Output is correct
92 Correct 462 ms 62364 KB Output is correct
93 Correct 493 ms 75352 KB Output is correct
94 Correct 440 ms 61632 KB Output is correct
95 Correct 253 ms 50620 KB Output is correct
96 Correct 158 ms 45900 KB Output is correct
97 Correct 233 ms 26148 KB Output is correct
98 Correct 514 ms 82752 KB Output is correct
99 Correct 237 ms 48128 KB Output is correct
100 Correct 58 ms 5372 KB Output is correct
101 Correct 393 ms 55060 KB Output is correct
102 Correct 306 ms 47340 KB Output is correct
103 Correct 337 ms 38932 KB Output is correct
104 Correct 382 ms 47060 KB Output is correct