oj.uz

Submission #646079

# Submission time Handle Problem Language Result Execution time Memory
646079 2022-09-28T15:15:40 Z dooompy Stranded Far From Home (BOI22_island) C++17
100 / 100
 153 ms 25404 KB 
#include "bits/stdc++.h"
 
using namespace std;
 
void abc() {cout << endl;}
template <typename T, typename ...U> void abc(T a, U ...b) {
    cout << a << ' ', abc(b...);
}
template <typename T> void printv(T l, T r) {
    while (l != r) cout << *l << " \n"[++l == r];
}
template <typename A, typename B> istream& operator >> (istream& o, pair<A, B> &a) {
    return o >> a.first >> a.second;
}
template <typename A, typename B> ostream& operator << (ostream& o, pair<A, B> a) {
    return o << '(' << a.first << ", " << a.second << ')';
}
template <typename T> ostream& operator << (ostream& o, vector<T> a) {
    bool is = false;
    for (T i : a) {o << (is ? ' ' : '{'), is = true, o << i;}
    return o << '}';
}
 
#ifdef local
#define test(args...) abc("[" + string(#args) + "]", args)
#else
#define test(args...) void(0)
#endif
 
using ll = long long;
 
ll s[200005];
int par[200005];
ll sz[200005];
 
vector<int> tracker[200005];
 
bool able[200005];
 
int findset(int i) {
    return (par[i] == i ? i : par[i] = findset(par[i]));
}
 
void merge(int a, int b) {
    if (a == b) return;
 
    if (tracker[a].size() > tracker[b].size()) swap(a, b);
 
    for (auto cur : tracker[a]) tracker[b].push_back(cur);
 
    par[a] = b;
    sz[b] += sz[a];
}
 
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
//    freopen("", "r", stdin);
//    freopen("", "w", stdout);
    int n, m; cin >> n >> m;
    for (int i = 1; i <= n; i++) cin >> s[i];
 
    for (int i = 1; i <= n; i++) {
        par[i] = i;
        sz[i] = s[i];
        tracker[i].push_back(i);
    }
 
    vector<pair<int, int>> edges;
 
    for (int i = 0; i < m; i++) {
        int a, b; cin >> a >> b;
        if (s[a] < s[b]) edges.emplace_back(a, b);
        else edges.emplace_back(b, a);
    }
 
    sort(edges.begin(), edges.end(), [](pair<int, int> a, pair<int, int> b) {
        if (s[a.second] == s[b.second]) {
            return s[a.first] < s[b.first];
        }
        return s[a.second] < s[b.second];
    });
 
    for (int i = 1; i <= n; i++) able[i] =true;
 
    for (auto edge : edges) {
        int a = findset(edge.first), b = findset(edge.second);
 
        // check if edge.first -> edge.second
 
//        if (a == b) continue;
 
        if (sz[a] >= s[edge.second]) {
            // still ok
            merge(a, b);
        } else {
            for (auto cur : tracker[a]) {
                able[cur] = false;
            }
 
            tracker[a].clear(); tracker[a].shrink_to_fit();
            merge(a, b);
        }
    }
 
    for (int i = 1; i <= n; i++) {
        if (able[i]) cout << "1";
        else cout << "0";
    }
}

Subtask #1
10.0 / 10.0

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

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 110 ms 18648 KB Output is correct
4 Correct 116 ms 24364 KB Output is correct
5 Correct 117 ms 19008 KB Output is correct
6 Correct 123 ms 19600 KB Output is correct
7 Correct 118 ms 19712 KB Output is correct
8 Correct 124 ms 22648 KB Output is correct
9 Correct 95 ms 18488 KB Output is correct
10 Correct 84 ms 17344 KB Output is correct
11 Correct 95 ms 18896 KB Output is correct
12 Correct 117 ms 18812 KB Output is correct
13 Correct 124 ms 25384 KB Output is correct
14 Correct 117 ms 24588 KB Output is correct
15 Correct 88 ms 18860 KB Output is correct
16 Correct 64 ms 18828 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 148 ms 20664 KB Output is correct
3 Correct 149 ms 20800 KB Output is correct
4 Correct 130 ms 25116 KB Output is correct
5 Correct 122 ms 25300 KB Output is correct
6 Correct 141 ms 20572 KB Output is correct
7 Correct 89 ms 18948 KB Output is correct
8 Correct 89 ms 18864 KB Output is correct
9 Correct 62 ms 18752 KB Output is correct
10 Correct 91 ms 17976 KB Output is correct
11 Correct 132 ms 21816 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 133 ms 18704 KB Output is correct
3 Correct 137 ms 19120 KB Output is correct
4 Correct 137 ms 19996 KB Output is correct
5 Correct 121 ms 21796 KB Output is correct
6 Correct 116 ms 19692 KB Output is correct
7 Correct 90 ms 18908 KB Output is correct
8 Correct 74 ms 19760 KB Output is correct
9 Correct 70 ms 12296 KB Output is correct
10 Correct 117 ms 22560 KB Output is correct
11 Correct 122 ms 21788 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4948 KB Output is correct
2 Correct 2 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 3 ms 5076 KB Output is correct
6 Correct 3 ms 5076 KB Output is correct
7 Correct 4 ms 5076 KB Output is correct
8 Correct 3 ms 5076 KB Output is correct
9 Correct 3 ms 5076 KB Output is correct
10 Correct 4 ms 5204 KB Output is correct
11 Correct 4 ms 5076 KB Output is correct
12 Correct 4 ms 5076 KB Output is correct
13 Correct 3 ms 5204 KB Output is correct
14 Correct 4 ms 5076 KB Output is correct
15 Correct 4 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 110 ms 18648 KB Output is correct
18 Correct 116 ms 24364 KB Output is correct
19 Correct 117 ms 19008 KB Output is correct
20 Correct 123 ms 19600 KB Output is correct
21 Correct 118 ms 19712 KB Output is correct
22 Correct 124 ms 22648 KB Output is correct
23 Correct 95 ms 18488 KB Output is correct
24 Correct 84 ms 17344 KB Output is correct
25 Correct 95 ms 18896 KB Output is correct
26 Correct 117 ms 18812 KB Output is correct
27 Correct 124 ms 25384 KB Output is correct
28 Correct 117 ms 24588 KB Output is correct
29 Correct 88 ms 18860 KB Output is correct
30 Correct 64 ms 18828 KB Output is correct
31 Correct 2 ms 4948 KB Output is correct
32 Correct 148 ms 20664 KB Output is correct
33 Correct 149 ms 20800 KB Output is correct
34 Correct 130 ms 25116 KB Output is correct
35 Correct 122 ms 25300 KB Output is correct
36 Correct 141 ms 20572 KB Output is correct
37 Correct 89 ms 18948 KB Output is correct
38 Correct 89 ms 18864 KB Output is correct
39 Correct 62 ms 18752 KB Output is correct
40 Correct 91 ms 17976 KB Output is correct
41 Correct 132 ms 21816 KB Output is correct
42 Correct 2 ms 4948 KB Output is correct
43 Correct 133 ms 18704 KB Output is correct
44 Correct 137 ms 19120 KB Output is correct
45 Correct 137 ms 19996 KB Output is correct
46 Correct 121 ms 21796 KB Output is correct
47 Correct 116 ms 19692 KB Output is correct
48 Correct 90 ms 18908 KB Output is correct
49 Correct 74 ms 19760 KB Output is correct
50 Correct 70 ms 12296 KB Output is correct
51 Correct 117 ms 22560 KB Output is correct
52 Correct 122 ms 21788 KB Output is correct
53 Correct 2 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 5076 KB Output is correct
57 Correct 3 ms 5076 KB Output is correct
58 Correct 3 ms 5076 KB Output is correct
59 Correct 4 ms 5132 KB Output is correct
60 Correct 3 ms 5076 KB Output is correct
61 Correct 3 ms 5076 KB Output is correct
62 Correct 3 ms 5076 KB Output is correct
63 Correct 3 ms 5076 KB Output is correct
64 Correct 3 ms 5076 KB Output is correct
65 Correct 3 ms 5204 KB Output is correct
66 Correct 3 ms 5076 KB Output is correct
67 Correct 102 ms 18644 KB Output is correct
68 Correct 122 ms 24316 KB Output is correct
69 Correct 119 ms 19008 KB Output is correct
70 Correct 120 ms 19664 KB Output is correct
71 Correct 129 ms 19640 KB Output is correct
72 Correct 124 ms 22712 KB Output is correct
73 Correct 98 ms 18540 KB Output is correct
74 Correct 84 ms 17264 KB Output is correct
75 Correct 88 ms 18936 KB Output is correct
76 Correct 153 ms 18820 KB Output is correct
77 Correct 130 ms 25400 KB Output is correct
78 Correct 119 ms 24636 KB Output is correct
79 Correct 95 ms 18972 KB Output is correct
80 Correct 66 ms 18900 KB Output is correct
81 Correct 136 ms 20668 KB Output is correct
82 Correct 142 ms 20728 KB Output is correct
83 Correct 137 ms 25108 KB Output is correct
84 Correct 129 ms 25404 KB Output is correct
85 Correct 141 ms 20568 KB Output is correct
86 Correct 92 ms 18860 KB Output is correct
87 Correct 92 ms 18852 KB Output is correct
88 Correct 94 ms 18040 KB Output is correct
89 Correct 128 ms 21892 KB Output is correct
90 Correct 132 ms 18652 KB Output is correct
91 Correct 133 ms 19096 KB Output is correct
92 Correct 139 ms 19936 KB Output is correct
93 Correct 132 ms 21812 KB Output is correct
94 Correct 113 ms 19652 KB Output is correct
95 Correct 89 ms 18880 KB Output is correct
96 Correct 77 ms 19768 KB Output is correct
97 Correct 70 ms 12308 KB Output is correct
98 Correct 130 ms 22572 KB Output is correct
99 Correct 128 ms 21700 KB Output is correct
100 Correct 54 ms 7368 KB Output is correct
101 Correct 145 ms 19320 KB Output is correct
102 Correct 99 ms 17052 KB Output is correct
103 Correct 121 ms 16436 KB Output is correct
104 Correct 136 ms 18300 KB Output is correct