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Submission #598575

# Submission time Handle Problem Language Result Execution time Memory
598575 2022-07-18T14:14:38 Z someone Stranded Far From Home (BOI22_island) C++14
100 / 100
 427 ms 77896 KB 
#include <bits/stdc++.h>
#define int long long
using namespace std;

struct Node {
    int id, nbHab;
};

const int N = 2e5 + 42, MOD = 1e9 + 7;

bool ans[N];
Node node[N];
set<int> win[N];
vector<int> adj[N];
int n, m, par[N], sum[N];

int F(int i) {
    if(par[i] == i)
        return i;
    return par[i] = F(par[i]);
}

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

    cin >> n >> m;
    for(int i = 0; i < n; i++) {
        node[i].id = i;
        cin >> node[i].nbHab;

        par[i] = i;
        win[i].insert(i);
        sum[i] = node[i].nbHab;
    }

    for(int i = 0; i < m; i++) {
        int a, b; cin >> a >> b;
        a--, b--;
        if(a > b) swap(a, b);
        if(node[a].nbHab > node[b].nbHab) swap(a, b);

        adj[b].push_back(a);
    }

    sort(node, node + n,
    [](Node a, Node b) {
        if(a.nbHab == b.nbHab)
            return a.id < b.id;
        return a.nbHab < b.nbHab;
    });

    for(int i = 0; i < n; i++) {
        int act = node[i].id;
        for(int j : adj[act]) {
            j = F(j);
            if(j != act) {
                if(sum[j] >= node[i].nbHab) {
                    if(win[j].size() > win[act].size())
                        swap(win[j], win[act]);
                    for(int id : win[j])
                        win[act].insert(id);
                }
                par[j] = act;
                sum[act] += sum[j];
            }
        }
    }

    for(int i : win[F(node[n-1].id)])
        ans[i] = true;
    for(int i = 0; i < n; i++)
        cout << ans[i];
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14420 KB Output is correct
2 Correct 9 ms 14436 KB Output is correct
3 Correct 9 ms 14420 KB Output is correct
4 Correct 9 ms 14676 KB Output is correct
5 Correct 9 ms 14764 KB Output is correct
6 Correct 9 ms 14676 KB Output is correct
7 Correct 8 ms 14676 KB Output is correct
8 Correct 8 ms 14548 KB Output is correct
9 Correct 9 ms 14776 KB Output is correct
10 Correct 9 ms 14828 KB Output is correct
11 Correct 9 ms 14804 KB Output is correct
12 Correct 8 ms 14804 KB Output is correct
13 Correct 8 ms 14704 KB Output is correct
14 Correct 8 ms 14696 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14320 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 165 ms 43548 KB Output is correct
4 Correct 198 ms 48684 KB Output is correct
5 Correct 231 ms 55456 KB Output is correct
6 Correct 245 ms 58516 KB Output is correct
7 Correct 282 ms 58592 KB Output is correct
8 Correct 206 ms 48716 KB Output is correct
9 Correct 227 ms 66476 KB Output is correct
10 Correct 132 ms 35120 KB Output is correct
11 Correct 198 ms 48936 KB Output is correct
12 Correct 221 ms 46520 KB Output is correct
13 Correct 167 ms 49800 KB Output is correct
14 Correct 167 ms 50688 KB Output is correct
15 Correct 188 ms 49724 KB Output is correct
16 Correct 165 ms 48536 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14420 KB Output is correct
2 Correct 299 ms 63140 KB Output is correct
3 Correct 302 ms 65608 KB Output is correct
4 Correct 221 ms 50256 KB Output is correct
5 Correct 172 ms 49408 KB Output is correct
6 Correct 309 ms 65868 KB Output is correct
7 Correct 241 ms 49496 KB Output is correct
8 Correct 204 ms 49396 KB Output is correct
9 Correct 144 ms 47676 KB Output is correct
10 Correct 155 ms 41176 KB Output is correct
11 Correct 177 ms 48972 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14444 KB Output is correct
2 Correct 317 ms 49012 KB Output is correct
3 Correct 320 ms 55156 KB Output is correct
4 Correct 360 ms 60776 KB Output is correct
5 Correct 422 ms 73896 KB Output is correct
6 Correct 324 ms 58564 KB Output is correct
7 Correct 249 ms 45656 KB Output is correct
8 Correct 127 ms 50536 KB Output is correct
9 Correct 141 ms 33096 KB Output is correct
10 Correct 427 ms 76240 KB Output is correct
11 Correct 183 ms 47588 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14420 KB Output is correct
2 Correct 9 ms 14436 KB Output is correct
3 Correct 9 ms 14420 KB Output is correct
4 Correct 9 ms 14676 KB Output is correct
5 Correct 9 ms 14764 KB Output is correct
6 Correct 9 ms 14676 KB Output is correct
7 Correct 8 ms 14676 KB Output is correct
8 Correct 8 ms 14548 KB Output is correct
9 Correct 9 ms 14776 KB Output is correct
10 Correct 9 ms 14828 KB Output is correct
11 Correct 9 ms 14804 KB Output is correct
12 Correct 8 ms 14804 KB Output is correct
13 Correct 8 ms 14704 KB Output is correct
14 Correct 8 ms 14696 KB Output is correct
15 Correct 8 ms 14320 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 165 ms 43548 KB Output is correct
18 Correct 198 ms 48684 KB Output is correct
19 Correct 231 ms 55456 KB Output is correct
20 Correct 245 ms 58516 KB Output is correct
21 Correct 282 ms 58592 KB Output is correct
22 Correct 206 ms 48716 KB Output is correct
23 Correct 227 ms 66476 KB Output is correct
24 Correct 132 ms 35120 KB Output is correct
25 Correct 198 ms 48936 KB Output is correct
26 Correct 221 ms 46520 KB Output is correct
27 Correct 167 ms 49800 KB Output is correct
28 Correct 167 ms 50688 KB Output is correct
29 Correct 188 ms 49724 KB Output is correct
30 Correct 165 ms 48536 KB Output is correct
31 Correct 9 ms 14420 KB Output is correct
32 Correct 299 ms 63140 KB Output is correct
33 Correct 302 ms 65608 KB Output is correct
34 Correct 221 ms 50256 KB Output is correct
35 Correct 172 ms 49408 KB Output is correct
36 Correct 309 ms 65868 KB Output is correct
37 Correct 241 ms 49496 KB Output is correct
38 Correct 204 ms 49396 KB Output is correct
39 Correct 144 ms 47676 KB Output is correct
40 Correct 155 ms 41176 KB Output is correct
41 Correct 177 ms 48972 KB Output is correct
42 Correct 7 ms 14444 KB Output is correct
43 Correct 317 ms 49012 KB Output is correct
44 Correct 320 ms 55156 KB Output is correct
45 Correct 360 ms 60776 KB Output is correct
46 Correct 422 ms 73896 KB Output is correct
47 Correct 324 ms 58564 KB Output is correct
48 Correct 249 ms 45656 KB Output is correct
49 Correct 127 ms 50536 KB Output is correct
50 Correct 141 ms 33096 KB Output is correct
51 Correct 427 ms 76240 KB Output is correct
52 Correct 183 ms 47588 KB Output is correct
53 Correct 7 ms 14356 KB Output is correct
54 Correct 7 ms 14420 KB Output is correct
55 Correct 7 ms 14428 KB Output is correct
56 Correct 10 ms 14700 KB Output is correct
57 Correct 13 ms 14772 KB Output is correct
58 Correct 9 ms 14696 KB Output is correct
59 Correct 11 ms 14604 KB Output is correct
60 Correct 11 ms 14568 KB Output is correct
61 Correct 9 ms 14692 KB Output is correct
62 Correct 9 ms 14824 KB Output is correct
63 Correct 11 ms 14756 KB Output is correct
64 Correct 8 ms 14804 KB Output is correct
65 Correct 9 ms 14676 KB Output is correct
66 Correct 8 ms 14776 KB Output is correct
67 Correct 161 ms 46488 KB Output is correct
68 Correct 174 ms 49080 KB Output is correct
69 Correct 248 ms 54892 KB Output is correct
70 Correct 266 ms 58660 KB Output is correct
71 Correct 275 ms 57208 KB Output is correct
72 Correct 203 ms 48428 KB Output is correct
73 Correct 221 ms 66504 KB Output is correct
74 Correct 117 ms 33224 KB Output is correct
75 Correct 199 ms 47568 KB Output is correct
76 Correct 230 ms 45992 KB Output is correct
77 Correct 185 ms 49796 KB Output is correct
78 Correct 164 ms 49512 KB Output is correct
79 Correct 185 ms 48468 KB Output is correct
80 Correct 161 ms 49448 KB Output is correct
81 Correct 296 ms 65420 KB Output is correct
82 Correct 324 ms 66036 KB Output is correct
83 Correct 231 ms 46116 KB Output is correct
84 Correct 171 ms 49008 KB Output is correct
85 Correct 292 ms 67088 KB Output is correct
86 Correct 206 ms 50404 KB Output is correct
87 Correct 236 ms 50288 KB Output is correct
88 Correct 147 ms 40544 KB Output is correct
89 Correct 178 ms 46668 KB Output is correct
90 Correct 341 ms 51500 KB Output is correct
91 Correct 305 ms 56696 KB Output is correct
92 Correct 410 ms 63724 KB Output is correct
93 Correct 408 ms 73000 KB Output is correct
94 Correct 359 ms 58652 KB Output is correct
95 Correct 206 ms 47496 KB Output is correct
96 Correct 132 ms 50096 KB Output is correct
97 Correct 161 ms 33500 KB Output is correct
98 Correct 418 ms 77896 KB Output is correct
99 Correct 208 ms 49096 KB Output is correct
100 Correct 49 ms 19308 KB Output is correct
101 Correct 349 ms 57732 KB Output is correct
102 Correct 256 ms 46364 KB Output is correct
103 Correct 303 ms 38960 KB Output is correct
104 Correct 293 ms 46300 KB Output is correct