oj.uz

Submission #941328

# Submission time Handle Problem Language Result Execution time Memory
941328 2024-03-08T13:46:22 Z prairie2022 Stranded Far From Home (BOI22_island) C++17
100 / 100
 114 ms 24636 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;

#define F first 
#define S second

vector<int> dsu[2]; // biggest in group, discard?, sum of popularity

inline int boss(int u, bool b){
    int &bs = dsu[b][u];
    if(bs==u) return u;
    return bs = boss(bs, b);
}

int main(){
    cin.tie(0)->sync_with_stdio(0);
    int n, m;
    cin >> n >> m;
    fill(dsu, dsu+2, vector<int>(n+1));
    dsu[1][0] = 0;

    vector<pair<ll, int>> s(n+1);
    for(int i=1; i<=n; i++){
        cin >> s[i].F;
        s[i].S = i;
    }
    vector<vector<int>> e(n+1);
    while(m--){
        int a, b;
        cin >> a >> b;
        if(s[a]<s[b]) swap(a, b);
        e[a].push_back(b);
    }

    s[0] = {INT32_MAX, 0};
    sort(s.begin(), s.end());
    s.pop_back();

    vector<ll> tot(n+1);
    for(const auto &[num, i] : s){
        dsu[0][i] = dsu[1][i] = i;
        tot[i] = num;
        for(int v: e[i]){
            v = boss(v, 0);
            if(v==i) continue;
            dsu[0][v] = i;
            dsu[1][v] = (tot[v]>=num)?i:0;
            tot[i] += tot[v];
        }
    }
    for(int i=1; i<=n; i++) cout << "10"[!boss(i, 1)];
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 600 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 72 ms 15796 KB Output is correct
4 Correct 73 ms 22588 KB Output is correct
5 Correct 72 ms 19112 KB Output is correct
6 Correct 70 ms 19784 KB Output is correct
7 Correct 71 ms 19780 KB Output is correct
8 Correct 100 ms 24128 KB Output is correct
9 Correct 63 ms 19004 KB Output is correct
10 Correct 53 ms 16960 KB Output is correct
11 Correct 74 ms 23364 KB Output is correct
12 Correct 107 ms 20476 KB Output is correct
13 Correct 81 ms 22848 KB Output is correct
14 Correct 74 ms 22592 KB Output is correct
15 Correct 77 ms 22080 KB Output is correct
16 Correct 55 ms 21324 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 93 ms 15636 KB Output is correct
3 Correct 102 ms 20232 KB Output is correct
4 Correct 79 ms 24188 KB Output is correct
5 Correct 72 ms 22080 KB Output is correct
6 Correct 100 ms 20036 KB Output is correct
7 Correct 100 ms 22208 KB Output is correct
8 Correct 92 ms 22296 KB Output is correct
9 Correct 57 ms 21324 KB Output is correct
10 Correct 74 ms 19524 KB Output is correct
11 Correct 98 ms 18988 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 97 ms 15508 KB Output is correct
3 Correct 104 ms 19788 KB Output is correct
4 Correct 101 ms 20032 KB Output is correct
5 Correct 83 ms 19812 KB Output is correct
6 Correct 77 ms 19452 KB Output is correct
7 Correct 69 ms 20804 KB Output is correct
8 Correct 56 ms 22184 KB Output is correct
9 Correct 59 ms 11460 KB Output is correct
10 Correct 83 ms 18264 KB Output is correct
11 Correct 83 ms 19004 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 2 ms 348 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 604 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 604 KB Output is correct
14 Correct 1 ms 600 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 72 ms 15796 KB Output is correct
18 Correct 73 ms 22588 KB Output is correct
19 Correct 72 ms 19112 KB Output is correct
20 Correct 70 ms 19784 KB Output is correct
21 Correct 71 ms 19780 KB Output is correct
22 Correct 100 ms 24128 KB Output is correct
23 Correct 63 ms 19004 KB Output is correct
24 Correct 53 ms 16960 KB Output is correct
25 Correct 74 ms 23364 KB Output is correct
26 Correct 107 ms 20476 KB Output is correct
27 Correct 81 ms 22848 KB Output is correct
28 Correct 74 ms 22592 KB Output is correct
29 Correct 77 ms 22080 KB Output is correct
30 Correct 55 ms 21324 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 93 ms 15636 KB Output is correct
33 Correct 102 ms 20232 KB Output is correct
34 Correct 79 ms 24188 KB Output is correct
35 Correct 72 ms 22080 KB Output is correct
36 Correct 100 ms 20036 KB Output is correct
37 Correct 100 ms 22208 KB Output is correct
38 Correct 92 ms 22296 KB Output is correct
39 Correct 57 ms 21324 KB Output is correct
40 Correct 74 ms 19524 KB Output is correct
41 Correct 98 ms 18988 KB Output is correct
42 Correct 0 ms 348 KB Output is correct
43 Correct 97 ms 15508 KB Output is correct
44 Correct 104 ms 19788 KB Output is correct
45 Correct 101 ms 20032 KB Output is correct
46 Correct 83 ms 19812 KB Output is correct
47 Correct 77 ms 19452 KB Output is correct
48 Correct 69 ms 20804 KB Output is correct
49 Correct 56 ms 22184 KB Output is correct
50 Correct 59 ms 11460 KB Output is correct
51 Correct 83 ms 18264 KB Output is correct
52 Correct 83 ms 19004 KB Output is correct
53 Correct 0 ms 348 KB Output is correct
54 Correct 0 ms 348 KB Output is correct
55 Correct 0 ms 348 KB Output is correct
56 Correct 1 ms 604 KB Output is correct
57 Correct 1 ms 604 KB Output is correct
58 Correct 1 ms 604 KB Output is correct
59 Correct 1 ms 600 KB Output is correct
60 Correct 1 ms 600 KB Output is correct
61 Correct 1 ms 604 KB Output is correct
62 Correct 1 ms 604 KB Output is correct
63 Correct 1 ms 604 KB Output is correct
64 Correct 1 ms 604 KB Output is correct
65 Correct 1 ms 604 KB Output is correct
66 Correct 1 ms 604 KB Output is correct
67 Correct 81 ms 20264 KB Output is correct
68 Correct 75 ms 22592 KB Output is correct
69 Correct 70 ms 19088 KB Output is correct
70 Correct 73 ms 20036 KB Output is correct
71 Correct 86 ms 19908 KB Output is correct
72 Correct 113 ms 24124 KB Output is correct
73 Correct 65 ms 19012 KB Output is correct
74 Correct 50 ms 16964 KB Output is correct
75 Correct 74 ms 23364 KB Output is correct
76 Correct 78 ms 20284 KB Output is correct
77 Correct 91 ms 22796 KB Output is correct
78 Correct 72 ms 22588 KB Output is correct
79 Correct 70 ms 22080 KB Output is correct
80 Correct 56 ms 21324 KB Output is correct
81 Correct 87 ms 20088 KB Output is correct
82 Correct 87 ms 20032 KB Output is correct
83 Correct 93 ms 24636 KB Output is correct
84 Correct 74 ms 22072 KB Output is correct
85 Correct 86 ms 20028 KB Output is correct
86 Correct 90 ms 22336 KB Output is correct
87 Correct 91 ms 22340 KB Output is correct
88 Correct 71 ms 19324 KB Output is correct
89 Correct 84 ms 19004 KB Output is correct
90 Correct 98 ms 20040 KB Output is correct
91 Correct 104 ms 19784 KB Output is correct
92 Correct 114 ms 20028 KB Output is correct
93 Correct 87 ms 19780 KB Output is correct
94 Correct 81 ms 19292 KB Output is correct
95 Correct 69 ms 20804 KB Output is correct
96 Correct 60 ms 22024 KB Output is correct
97 Correct 60 ms 11336 KB Output is correct
98 Correct 81 ms 18240 KB Output is correct
99 Correct 84 ms 19116 KB Output is correct
100 Correct 31 ms 3924 KB Output is correct
101 Correct 109 ms 19904 KB Output is correct
102 Correct 73 ms 16880 KB Output is correct
103 Correct 88 ms 17604 KB Output is correct
104 Correct 100 ms 19624 KB Output is correct