oj.uz

Submission #666358

# Submission time Handle Problem Language Result Execution time Memory
666358 2022-11-28T09:14:33 Z mychecksedad Stranded Far From Home (BOI22_island) C++17
100 / 100
 234 ms 28368 KB 
/* Author : Mychecksdead */
#include<bits/stdc++.h>
using namespace std;
#define all(x) x.begin(), x.end()
#define pb push_back
const int N = 2e5 + 100;


int a[N], pos[N];
struct Dsu{
    vector<int> s, p, mx;
    vector<long long> sum;
    Dsu(int n){
        s.resize(n + 1, 1);
        p.resize(n + 1);
        mx.resize(n + 1);
        sum.resize(n + 1, 0ll);
        for(int i = 0; i <= n; ++i) p[i] = mx[i] = i;
        for(int i = 0; i <= n; ++i) sum[i] = a[i];
    }
    int find(int v){
        if(v==p[v]) return v;
        return (p[v]=find(p[v]));
    }
    void merge(int c, int b){
        c = find(c);
        b = find(b);
        if(c != b){
            if(s[c] > s[b]) swap(c, b);
            p[c] = b;
            s[b] += s[c];
            sum[b] += sum[c];
            mx[b] = pos[mx[c]] > pos[mx[b]] ? mx[c] : mx[b];
        }
    }
};


int n, m;
vector<int> g[N];
vector<bool> vis;
vector<int> ans;
pair<int, int> b[N];
int main(){
    cin.tie(0); ios::sync_with_stdio(0);
    cin >> n >> m;
    for(int i = 1; i <= n; ++i) cin >> a[i];
    for(int i = 1; i <= n; ++i) b[i] = {a[i], i};
    for(int i = 0; i < m; ++i){
        int a, b; cin >> a >> b;
        g[a].pb(b);
        g[b].pb(a);
    }


    Dsu d(n), M(n);
    sort(b + 1, b + 1 + n);
    ans.resize(n + 1, 0);
    vis.resize(n + 1, 0);

    for(int i = 1; i <= n; ++i) pos[b[i].second] = i;
    for(int i = 1; i <= n; ++i){
        int v = b[i].second;
        for(int u: g[v]){
            if(vis[u]){
                int co = d.find(u);
                if(d.sum[co] >= a[v]){
                    M.merge(v, d.mx[co]);
                }else{
                    ans[u] = -1;
                }
            }
        }
        for(int u: g[v]){
            if(vis[u]){
                d.merge(u, v);
            }
        }
        vis[v] = 1;
    }   
    vis.clear();
    vis.resize(n+1, 0);

    int co = M.find(b[n].second);

    for(int i = 1; i <= n; ++i) if(ans[i] != -1) ans[i] = (M.find(i) == co ? 1 : 0);


    for(int i = 1; i <= n; ++i) cout << (ans[i]==-1?0:ans[i]);

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 4 ms 5076 KB Output is correct
5 Correct 4 ms 5204 KB Output is correct
6 Correct 4 ms 5204 KB Output is correct
7 Correct 4 ms 5172 KB Output is correct
8 Correct 4 ms 5104 KB Output is correct
9 Correct 4 ms 5168 KB Output is correct
10 Correct 4 ms 5204 KB Output is correct
11 Correct 4 ms 5172 KB Output is correct
12 Correct 4 ms 5172 KB Output is correct
13 Correct 4 ms 5136 KB Output is correct
14 Correct 4 ms 5204 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 141 ms 23264 KB Output is correct
4 Correct 139 ms 23176 KB Output is correct
5 Correct 151 ms 22652 KB Output is correct
6 Correct 187 ms 23212 KB Output is correct
7 Correct 150 ms 23244 KB Output is correct
8 Correct 149 ms 23244 KB Output is correct
9 Correct 121 ms 23192 KB Output is correct
10 Correct 124 ms 23980 KB Output is correct
11 Correct 136 ms 23924 KB Output is correct
12 Correct 148 ms 23244 KB Output is correct
13 Correct 129 ms 23256 KB Output is correct
14 Correct 128 ms 23276 KB Output is correct
15 Correct 133 ms 23328 KB Output is correct
16 Correct 96 ms 23016 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 195 ms 23224 KB Output is correct
3 Correct 193 ms 27652 KB Output is correct
4 Correct 160 ms 27692 KB Output is correct
5 Correct 125 ms 26108 KB Output is correct
6 Correct 201 ms 27664 KB Output is correct
7 Correct 151 ms 27724 KB Output is correct
8 Correct 151 ms 27872 KB Output is correct
9 Correct 102 ms 26852 KB Output is correct
10 Correct 125 ms 26960 KB Output is correct
11 Correct 150 ms 26120 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 202 ms 23156 KB Output is correct
3 Correct 217 ms 27552 KB Output is correct
4 Correct 206 ms 27724 KB Output is correct
5 Correct 189 ms 27656 KB Output is correct
6 Correct 160 ms 26672 KB Output is correct
7 Correct 140 ms 28368 KB Output is correct
8 Correct 89 ms 26540 KB Output is correct
9 Correct 107 ms 17740 KB Output is correct
10 Correct 158 ms 26296 KB Output is correct
11 Correct 153 ms 26128 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 4 ms 5076 KB Output is correct
5 Correct 4 ms 5204 KB Output is correct
6 Correct 4 ms 5204 KB Output is correct
7 Correct 4 ms 5172 KB Output is correct
8 Correct 4 ms 5104 KB Output is correct
9 Correct 4 ms 5168 KB Output is correct
10 Correct 4 ms 5204 KB Output is correct
11 Correct 4 ms 5172 KB Output is correct
12 Correct 4 ms 5172 KB Output is correct
13 Correct 4 ms 5136 KB Output is correct
14 Correct 4 ms 5204 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 141 ms 23264 KB Output is correct
18 Correct 139 ms 23176 KB Output is correct
19 Correct 151 ms 22652 KB Output is correct
20 Correct 187 ms 23212 KB Output is correct
21 Correct 150 ms 23244 KB Output is correct
22 Correct 149 ms 23244 KB Output is correct
23 Correct 121 ms 23192 KB Output is correct
24 Correct 124 ms 23980 KB Output is correct
25 Correct 136 ms 23924 KB Output is correct
26 Correct 148 ms 23244 KB Output is correct
27 Correct 129 ms 23256 KB Output is correct
28 Correct 128 ms 23276 KB Output is correct
29 Correct 133 ms 23328 KB Output is correct
30 Correct 96 ms 23016 KB Output is correct
31 Correct 2 ms 4948 KB Output is correct
32 Correct 195 ms 23224 KB Output is correct
33 Correct 193 ms 27652 KB Output is correct
34 Correct 160 ms 27692 KB Output is correct
35 Correct 125 ms 26108 KB Output is correct
36 Correct 201 ms 27664 KB Output is correct
37 Correct 151 ms 27724 KB Output is correct
38 Correct 151 ms 27872 KB Output is correct
39 Correct 102 ms 26852 KB Output is correct
40 Correct 125 ms 26960 KB Output is correct
41 Correct 150 ms 26120 KB Output is correct
42 Correct 2 ms 4948 KB Output is correct
43 Correct 202 ms 23156 KB Output is correct
44 Correct 217 ms 27552 KB Output is correct
45 Correct 206 ms 27724 KB Output is correct
46 Correct 189 ms 27656 KB Output is correct
47 Correct 160 ms 26672 KB Output is correct
48 Correct 140 ms 28368 KB Output is correct
49 Correct 89 ms 26540 KB Output is correct
50 Correct 107 ms 17740 KB Output is correct
51 Correct 158 ms 26296 KB Output is correct
52 Correct 153 ms 26128 KB Output is correct
53 Correct 3 ms 4948 KB Output is correct
54 Correct 2 ms 4948 KB Output is correct
55 Correct 3 ms 4948 KB Output is correct
56 Correct 4 ms 5196 KB Output is correct
57 Correct 4 ms 5204 KB Output is correct
58 Correct 4 ms 5204 KB Output is correct
59 Correct 5 ms 5204 KB Output is correct
60 Correct 4 ms 5176 KB Output is correct
61 Correct 4 ms 5216 KB Output is correct
62 Correct 5 ms 5204 KB Output is correct
63 Correct 4 ms 5204 KB Output is correct
64 Correct 4 ms 5204 KB Output is correct
65 Correct 3 ms 5204 KB Output is correct
66 Correct 4 ms 5228 KB Output is correct
67 Correct 161 ms 27680 KB Output is correct
68 Correct 125 ms 26248 KB Output is correct
69 Correct 177 ms 26936 KB Output is correct
70 Correct 154 ms 27516 KB Output is correct
71 Correct 158 ms 27608 KB Output is correct
72 Correct 154 ms 27700 KB Output is correct
73 Correct 141 ms 27600 KB Output is correct
74 Correct 106 ms 27536 KB Output is correct
75 Correct 130 ms 27392 KB Output is correct
76 Correct 167 ms 26316 KB Output is correct
77 Correct 126 ms 26188 KB Output is correct
78 Correct 126 ms 26316 KB Output is correct
79 Correct 131 ms 27676 KB Output is correct
80 Correct 93 ms 26784 KB Output is correct
81 Correct 184 ms 27492 KB Output is correct
82 Correct 199 ms 27764 KB Output is correct
83 Correct 149 ms 27748 KB Output is correct
84 Correct 132 ms 26188 KB Output is correct
85 Correct 181 ms 27724 KB Output is correct
86 Correct 160 ms 27768 KB Output is correct
87 Correct 163 ms 27648 KB Output is correct
88 Correct 151 ms 27044 KB Output is correct
89 Correct 149 ms 26172 KB Output is correct
90 Correct 200 ms 27676 KB Output is correct
91 Correct 193 ms 27572 KB Output is correct
92 Correct 234 ms 27724 KB Output is correct
93 Correct 178 ms 27652 KB Output is correct
94 Correct 169 ms 26660 KB Output is correct
95 Correct 133 ms 28360 KB Output is correct
96 Correct 88 ms 26472 KB Output is correct
97 Correct 107 ms 17732 KB Output is correct
98 Correct 159 ms 26140 KB Output is correct
99 Correct 143 ms 26188 KB Output is correct
100 Correct 57 ms 9436 KB Output is correct
101 Correct 218 ms 27684 KB Output is correct
102 Correct 165 ms 23372 KB Output is correct
103 Correct 180 ms 24388 KB Output is correct
104 Correct 202 ms 27496 KB Output is correct