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Submission #795566

# Submission time Handle Problem Language Result Execution time Memory
795566 2023-07-27T11:23:34 Z TahirAliyev Stranded Far From Home (BOI22_island) C++17
100 / 100
 339 ms 36228 KB 
#include <bits/stdc++.h>
 
#pragma GCC optimize("O3")
 
using namespace std;
 
#define ll long long int
#define oo 4e18
#define pii pair<int, int>

const int MAX = 2e5 + 5;

int par[MAX];
ll sum[MAX];
vector<int> st[MAX];

int findset(int u){
    if(par[u] < 0) return u;
    return par[u] = findset(par[u]);
}

bool unite(int u, int v){
    u = findset(u), v = findset(v);
    if(u == v) return false;
    if(-par[v] > -par[u]){
        swap(u, v);
    }
    if(st[u].size() < st[v].size()) swap(st[v], st[u]);
    for(int a:st[v]){
        st[u].push_back(a);
    }
    par[u] += par[v];
    par[v] = u;
    sum[u] += sum[v];
    return true;
}

int arr[MAX];
bool ans[MAX];
vector<int> g[MAX];

int main(){
    memset(par, -1, sizeof(par));
    fill(ans, ans + MAX, 1);
    int n, m; cin >> n >> m;
    vector<pii> v;
    for (int i = 1; i <= n; i++)
    {
        cin >> arr[i];
        sum[i] = arr[i];
        st[i].push_back(i);
        v.push_back({arr[i], i});
    }
    sort(v.begin(), v.end());
    for (int i = 0; i < m; i++)
    {
        int a, b; cin >> a >> b;
        g[a].push_back(b);
        g[b].push_back(a);
    }
    for(pii node : v){
        for(int to : g[node.second]){
            if(arr[to] > arr[node.second]) continue;
            int pto = findset(to), pnode = findset(node.second);
            if(pto == pnode) continue;
            if(sum[pto] < arr[node.second]){
                for(int a : st[pto]){
                    ans[a] = 0;
                }
                st[pto].clear();
            }
            unite(to, node.second);
        }
    }
    for (int i = 1; i <= n; i++)
    {
        cout << ans[i];
    }
    
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 10580 KB Output is correct
2 Correct 5 ms 10580 KB Output is correct
3 Correct 5 ms 10672 KB Output is correct
4 Correct 7 ms 10828 KB Output is correct
5 Correct 7 ms 10832 KB Output is correct
6 Correct 6 ms 10836 KB Output is correct
7 Correct 7 ms 10836 KB Output is correct
8 Correct 6 ms 10828 KB Output is correct
9 Correct 6 ms 10836 KB Output is correct
10 Correct 7 ms 10836 KB Output is correct
11 Correct 9 ms 10836 KB Output is correct
12 Correct 7 ms 10876 KB Output is correct
13 Correct 6 ms 10780 KB Output is correct
14 Correct 7 ms 10836 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 10688 KB Output is correct
2 Correct 5 ms 10604 KB Output is correct
3 Correct 204 ms 33268 KB Output is correct
4 Correct 201 ms 32100 KB Output is correct
5 Correct 228 ms 34200 KB Output is correct
6 Correct 292 ms 35040 KB Output is correct
7 Correct 231 ms 35040 KB Output is correct
8 Correct 219 ms 33508 KB Output is correct
9 Correct 207 ms 36180 KB Output is correct
10 Correct 185 ms 31612 KB Output is correct
11 Correct 204 ms 33292 KB Output is correct
12 Correct 217 ms 31452 KB Output is correct
13 Correct 170 ms 31968 KB Output is correct
14 Correct 184 ms 32024 KB Output is correct
15 Correct 201 ms 33444 KB Output is correct
16 Correct 191 ms 32676 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 10580 KB Output is correct
2 Correct 260 ms 35660 KB Output is correct
3 Correct 285 ms 35760 KB Output is correct
4 Correct 213 ms 33536 KB Output is correct
5 Correct 173 ms 31676 KB Output is correct
6 Correct 264 ms 35644 KB Output is correct
7 Correct 231 ms 33464 KB Output is correct
8 Correct 214 ms 33464 KB Output is correct
9 Correct 164 ms 32616 KB Output is correct
10 Correct 187 ms 31900 KB Output is correct
11 Correct 221 ms 31676 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 10580 KB Output is correct
2 Correct 287 ms 33500 KB Output is correct
3 Correct 262 ms 33848 KB Output is correct
4 Correct 268 ms 34988 KB Output is correct
5 Correct 301 ms 36228 KB Output is correct
6 Correct 237 ms 33756 KB Output is correct
7 Correct 219 ms 34188 KB Output is correct
8 Correct 166 ms 31824 KB Output is correct
9 Correct 143 ms 23260 KB Output is correct
10 Correct 219 ms 36132 KB Output is correct
11 Correct 216 ms 31672 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 10580 KB Output is correct
2 Correct 5 ms 10580 KB Output is correct
3 Correct 5 ms 10672 KB Output is correct
4 Correct 7 ms 10828 KB Output is correct
5 Correct 7 ms 10832 KB Output is correct
6 Correct 6 ms 10836 KB Output is correct
7 Correct 7 ms 10836 KB Output is correct
8 Correct 6 ms 10828 KB Output is correct
9 Correct 6 ms 10836 KB Output is correct
10 Correct 7 ms 10836 KB Output is correct
11 Correct 9 ms 10836 KB Output is correct
12 Correct 7 ms 10876 KB Output is correct
13 Correct 6 ms 10780 KB Output is correct
14 Correct 7 ms 10836 KB Output is correct
15 Correct 5 ms 10688 KB Output is correct
16 Correct 5 ms 10604 KB Output is correct
17 Correct 204 ms 33268 KB Output is correct
18 Correct 201 ms 32100 KB Output is correct
19 Correct 228 ms 34200 KB Output is correct
20 Correct 292 ms 35040 KB Output is correct
21 Correct 231 ms 35040 KB Output is correct
22 Correct 219 ms 33508 KB Output is correct
23 Correct 207 ms 36180 KB Output is correct
24 Correct 185 ms 31612 KB Output is correct
25 Correct 204 ms 33292 KB Output is correct
26 Correct 217 ms 31452 KB Output is correct
27 Correct 170 ms 31968 KB Output is correct
28 Correct 184 ms 32024 KB Output is correct
29 Correct 201 ms 33444 KB Output is correct
30 Correct 191 ms 32676 KB Output is correct
31 Correct 5 ms 10580 KB Output is correct
32 Correct 260 ms 35660 KB Output is correct
33 Correct 285 ms 35760 KB Output is correct
34 Correct 213 ms 33536 KB Output is correct
35 Correct 173 ms 31676 KB Output is correct
36 Correct 264 ms 35644 KB Output is correct
37 Correct 231 ms 33464 KB Output is correct
38 Correct 214 ms 33464 KB Output is correct
39 Correct 164 ms 32616 KB Output is correct
40 Correct 187 ms 31900 KB Output is correct
41 Correct 221 ms 31676 KB Output is correct
42 Correct 5 ms 10580 KB Output is correct
43 Correct 287 ms 33500 KB Output is correct
44 Correct 262 ms 33848 KB Output is correct
45 Correct 268 ms 34988 KB Output is correct
46 Correct 301 ms 36228 KB Output is correct
47 Correct 237 ms 33756 KB Output is correct
48 Correct 219 ms 34188 KB Output is correct
49 Correct 166 ms 31824 KB Output is correct
50 Correct 143 ms 23260 KB Output is correct
51 Correct 219 ms 36132 KB Output is correct
52 Correct 216 ms 31672 KB Output is correct
53 Correct 5 ms 10692 KB Output is correct
54 Correct 5 ms 10580 KB Output is correct
55 Correct 6 ms 10692 KB Output is correct
56 Correct 6 ms 10836 KB Output is correct
57 Correct 6 ms 10836 KB Output is correct
58 Correct 6 ms 10836 KB Output is correct
59 Correct 6 ms 10828 KB Output is correct
60 Correct 6 ms 10836 KB Output is correct
61 Correct 8 ms 10828 KB Output is correct
62 Correct 7 ms 10824 KB Output is correct
63 Correct 6 ms 10912 KB Output is correct
64 Correct 6 ms 10860 KB Output is correct
65 Correct 6 ms 10820 KB Output is correct
66 Correct 6 ms 10836 KB Output is correct
67 Correct 219 ms 33404 KB Output is correct
68 Correct 187 ms 32128 KB Output is correct
69 Correct 224 ms 34180 KB Output is correct
70 Correct 249 ms 35108 KB Output is correct
71 Correct 261 ms 35012 KB Output is correct
72 Correct 226 ms 33520 KB Output is correct
73 Correct 218 ms 36160 KB Output is correct
74 Correct 191 ms 31576 KB Output is correct
75 Correct 222 ms 33260 KB Output is correct
76 Correct 231 ms 31684 KB Output is correct
77 Correct 176 ms 31972 KB Output is correct
78 Correct 179 ms 32000 KB Output is correct
79 Correct 231 ms 33460 KB Output is correct
80 Correct 167 ms 32652 KB Output is correct
81 Correct 270 ms 35640 KB Output is correct
82 Correct 333 ms 35860 KB Output is correct
83 Correct 278 ms 33672 KB Output is correct
84 Correct 199 ms 31676 KB Output is correct
85 Correct 308 ms 35756 KB Output is correct
86 Correct 268 ms 33540 KB Output is correct
87 Correct 267 ms 33564 KB Output is correct
88 Correct 234 ms 31892 KB Output is correct
89 Correct 256 ms 31688 KB Output is correct
90 Correct 290 ms 33456 KB Output is correct
91 Correct 319 ms 33860 KB Output is correct
92 Correct 303 ms 34940 KB Output is correct
93 Correct 294 ms 36184 KB Output is correct
94 Correct 233 ms 33764 KB Output is correct
95 Correct 224 ms 34300 KB Output is correct
96 Correct 165 ms 31796 KB Output is correct
97 Correct 192 ms 23308 KB Output is correct
98 Correct 246 ms 36068 KB Output is correct
99 Correct 213 ms 31676 KB Output is correct
100 Correct 81 ms 15088 KB Output is correct
101 Correct 315 ms 34284 KB Output is correct
102 Correct 226 ms 29916 KB Output is correct
103 Correct 339 ms 29796 KB Output is correct
104 Correct 317 ms 32928 KB Output is correct