oj.uz

Submission #601476

# Submission time Handle Problem Language Result Execution time Memory
601476 2022-07-22T05:27:22 Z 박상훈(#8471) Stranded Far From Home (BOI22_island) C++17
100 / 100
 252 ms 34540 KB 
#include <bits/stdc++.h>

typedef long long ll;
using namespace std;
vector<int> adj[200200], G[200200];
int a[200200];
struct DSU{
    int path[200200];
    ll S[200200];
    void init(int n){for (int i=1;i<=n;i++) path[i] = i, S[i] = a[i];}
    int find(int s){
        if (s==path[s]) return s;
        return path[s] = find(path[s]);
    }
    void merge(int s, int v){
        s = find(s), v = find(v);
        if (s==v) return;
        if (S[v] >= a[s]) G[s].push_back(v);
        path[v] = s;
        S[s] += S[v];
    }
}dsu;

bool on[200200], visited[200200];
void dfs(int s){
    visited[s] = 1;
    for (auto &v:G[s]) dfs(v);
}

bool cmp(int x, int y){return a[x] < a[y];}

int main(){
    int n, m;
    scanf("%d %d", &n, &m);

    vector<int> I;
    for (int i=1;i<=n;i++){
        scanf("%d", a+i);
        I.push_back(i);
    }
    for (int i=1;i<=m;i++){
        int x, y;
        scanf("%d %d", &x, &y);
        adj[x].push_back(y);
        adj[y].push_back(x);
    }

    sort(I.begin(), I.end(), cmp);
    dsu.init(n+1);
    for (auto &s:I){
        on[s] = 1;
        for (auto &v:adj[s]) if (on[v]){
            dsu.merge(s, v);
        }
    }

    dfs(I.back());
    for (int i=1;i<=n;i++) printf("%d", visited[i]);
    return 0;
}

Compilation message

island.cpp: In function 'int main()':
island.cpp:34:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   34 |     scanf("%d %d", &n, &m);
      |     ~~~~~^~~~~~~~~~~~~~~~~
island.cpp:38:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |         scanf("%d", a+i);
      |         ~~~~~^~~~~~~~~~~
island.cpp:43:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   43 |         scanf("%d %d", &x, &y);
      |         ~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 6 ms 9724 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 9 ms 9812 KB Output is correct
5 Correct 7 ms 9812 KB Output is correct
6 Correct 6 ms 9812 KB Output is correct
7 Correct 6 ms 9812 KB Output is correct
8 Correct 6 ms 9812 KB Output is correct
9 Correct 6 ms 9900 KB Output is correct
10 Correct 6 ms 9828 KB Output is correct
11 Correct 7 ms 9812 KB Output is correct
12 Correct 6 ms 9788 KB Output is correct
13 Correct 8 ms 9900 KB Output is correct
14 Correct 7 ms 9752 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 5 ms 9684 KB Output is correct
3 Correct 175 ms 25272 KB Output is correct
4 Correct 195 ms 27400 KB Output is correct
5 Correct 169 ms 24280 KB Output is correct
6 Correct 203 ms 25108 KB Output is correct
7 Correct 199 ms 25876 KB Output is correct
8 Correct 237 ms 27524 KB Output is correct
9 Correct 176 ms 24016 KB Output is correct
10 Correct 129 ms 24124 KB Output is correct
11 Correct 138 ms 25380 KB Output is correct
12 Correct 199 ms 25988 KB Output is correct
13 Correct 183 ms 27380 KB Output is correct
14 Correct 181 ms 28488 KB Output is correct
15 Correct 186 ms 33784 KB Output is correct
16 Correct 140 ms 32624 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 196 ms 22740 KB Output is correct
3 Correct 224 ms 25460 KB Output is correct
4 Correct 182 ms 30380 KB Output is correct
5 Correct 173 ms 28812 KB Output is correct
6 Correct 225 ms 26128 KB Output is correct
7 Correct 200 ms 33460 KB Output is correct
8 Correct 198 ms 33472 KB Output is correct
9 Correct 116 ms 32444 KB Output is correct
10 Correct 182 ms 25120 KB Output is correct
11 Correct 174 ms 26300 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 205 ms 23440 KB Output is correct
3 Correct 230 ms 27544 KB Output is correct
4 Correct 238 ms 25096 KB Output is correct
5 Correct 207 ms 28860 KB Output is correct
6 Correct 206 ms 27896 KB Output is correct
7 Correct 132 ms 26724 KB Output is correct
8 Correct 124 ms 31284 KB Output is correct
9 Correct 133 ms 20008 KB Output is correct
10 Correct 174 ms 25704 KB Output is correct
11 Correct 182 ms 25072 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 9684 KB Output is correct
2 Correct 6 ms 9724 KB Output is correct
3 Correct 5 ms 9684 KB Output is correct
4 Correct 9 ms 9812 KB Output is correct
5 Correct 7 ms 9812 KB Output is correct
6 Correct 6 ms 9812 KB Output is correct
7 Correct 6 ms 9812 KB Output is correct
8 Correct 6 ms 9812 KB Output is correct
9 Correct 6 ms 9900 KB Output is correct
10 Correct 6 ms 9828 KB Output is correct
11 Correct 7 ms 9812 KB Output is correct
12 Correct 6 ms 9788 KB Output is correct
13 Correct 8 ms 9900 KB Output is correct
14 Correct 7 ms 9752 KB Output is correct
15 Correct 5 ms 9684 KB Output is correct
16 Correct 5 ms 9684 KB Output is correct
17 Correct 175 ms 25272 KB Output is correct
18 Correct 195 ms 27400 KB Output is correct
19 Correct 169 ms 24280 KB Output is correct
20 Correct 203 ms 25108 KB Output is correct
21 Correct 199 ms 25876 KB Output is correct
22 Correct 237 ms 27524 KB Output is correct
23 Correct 176 ms 24016 KB Output is correct
24 Correct 129 ms 24124 KB Output is correct
25 Correct 138 ms 25380 KB Output is correct
26 Correct 199 ms 25988 KB Output is correct
27 Correct 183 ms 27380 KB Output is correct
28 Correct 181 ms 28488 KB Output is correct
29 Correct 186 ms 33784 KB Output is correct
30 Correct 140 ms 32624 KB Output is correct
31 Correct 5 ms 9684 KB Output is correct
32 Correct 196 ms 22740 KB Output is correct
33 Correct 224 ms 25460 KB Output is correct
34 Correct 182 ms 30380 KB Output is correct
35 Correct 173 ms 28812 KB Output is correct
36 Correct 225 ms 26128 KB Output is correct
37 Correct 200 ms 33460 KB Output is correct
38 Correct 198 ms 33472 KB Output is correct
39 Correct 116 ms 32444 KB Output is correct
40 Correct 182 ms 25120 KB Output is correct
41 Correct 174 ms 26300 KB Output is correct
42 Correct 5 ms 9684 KB Output is correct
43 Correct 205 ms 23440 KB Output is correct
44 Correct 230 ms 27544 KB Output is correct
45 Correct 238 ms 25096 KB Output is correct
46 Correct 207 ms 28860 KB Output is correct
47 Correct 206 ms 27896 KB Output is correct
48 Correct 132 ms 26724 KB Output is correct
49 Correct 124 ms 31284 KB Output is correct
50 Correct 133 ms 20008 KB Output is correct
51 Correct 174 ms 25704 KB Output is correct
52 Correct 182 ms 25072 KB Output is correct
53 Correct 6 ms 9684 KB Output is correct
54 Correct 5 ms 9684 KB Output is correct
55 Correct 5 ms 9684 KB Output is correct
56 Correct 7 ms 9812 KB Output is correct
57 Correct 6 ms 9812 KB Output is correct
58 Correct 6 ms 9852 KB Output is correct
59 Correct 6 ms 9812 KB Output is correct
60 Correct 6 ms 9848 KB Output is correct
61 Correct 7 ms 9976 KB Output is correct
62 Correct 7 ms 9812 KB Output is correct
63 Correct 7 ms 9812 KB Output is correct
64 Correct 7 ms 9812 KB Output is correct
65 Correct 9 ms 9812 KB Output is correct
66 Correct 7 ms 9804 KB Output is correct
67 Correct 168 ms 28240 KB Output is correct
68 Correct 177 ms 27724 KB Output is correct
69 Correct 200 ms 23708 KB Output is correct
70 Correct 188 ms 25276 KB Output is correct
71 Correct 187 ms 24560 KB Output is correct
72 Correct 210 ms 27268 KB Output is correct
73 Correct 182 ms 24152 KB Output is correct
74 Correct 152 ms 22260 KB Output is correct
75 Correct 132 ms 24096 KB Output is correct
76 Correct 170 ms 25420 KB Output is correct
77 Correct 205 ms 27236 KB Output is correct
78 Correct 160 ms 27248 KB Output is correct
79 Correct 179 ms 32516 KB Output is correct
80 Correct 126 ms 33504 KB Output is correct
81 Correct 196 ms 25024 KB Output is correct
82 Correct 218 ms 25964 KB Output is correct
83 Correct 202 ms 26480 KB Output is correct
84 Correct 149 ms 28436 KB Output is correct
85 Correct 204 ms 27324 KB Output is correct
86 Correct 213 ms 34540 KB Output is correct
87 Correct 187 ms 34440 KB Output is correct
88 Correct 164 ms 24300 KB Output is correct
89 Correct 227 ms 23704 KB Output is correct
90 Correct 202 ms 25892 KB Output is correct
91 Correct 215 ms 27780 KB Output is correct
92 Correct 252 ms 27892 KB Output is correct
93 Correct 221 ms 28008 KB Output is correct
94 Correct 198 ms 27452 KB Output is correct
95 Correct 155 ms 26928 KB Output is correct
96 Correct 122 ms 30888 KB Output is correct
97 Correct 134 ms 20356 KB Output is correct
98 Correct 195 ms 27124 KB Output is correct
99 Correct 179 ms 26384 KB Output is correct
100 Correct 54 ms 13900 KB Output is correct
101 Correct 234 ms 27380 KB Output is correct
102 Correct 217 ms 25380 KB Output is correct
103 Correct 194 ms 22360 KB Output is correct
104 Correct 213 ms 23864 KB Output is correct