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Submission #962635

# Submission time Handle Problem Language Result Execution time Memory
962635 2024-04-14T05:04:54 Z vjudge1 Stranded Far From Home (BOI22_island) C++17
100 / 100
 97 ms 23416 KB 
#include <bits/stdc++.h>

using namespace std;
using ll = long long;

#define int long long
#define FOR(i, a, b) for (int i = a; i <= b; i++)
#define FORD(i, a, b) for (int i = b; i >= a; i --)
#define REP(i, n) for (int i = 0; i < n; ++i)
#define REPD(i, n) for (int i = n - 1; i >= 0; --i)

#define MASK(i) (1LL << (i))
#define BIT(x, i) (((x) >> (i)) & 1)

constexpr ll LINF = (1ll << 60);
constexpr int INF = (1ll << 30);
constexpr int Mod = 1e9 + 7;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

void setupIO(){
    #define name "Whisper"
    //Phu Trong from Nguyen Tat Thanh High School for gifted student
    srand(time(NULL));
    cin.tie(nullptr)->sync_with_stdio(false); cout.tie(nullptr);
    //freopen(name".inp", "r", stdin);
    //freopen(name".out", "w", stdout);
    cout << fixed << setprecision(10);
}

template <class X, class Y>
    bool minimize(X &x, const Y &y){
        X eps = 1e-9;
        if (x > y + eps) {x = y; return 1;}
        return 0;
    }

template <class X, class Y>
    bool maximize(X &x, const Y &y){
        X eps = 1e-9;
        if (x + eps < y) {x = y; return 1;}
        return 0;
    }
const int MAX = 2e5 + 5;
int numNode, numEdge;
struct Edge{
    int u, v, w;
    Edge(){}
    Edge(int _u, int _v, int _w): u(_u), v(_v), w(_w){}
    int other(int x){ return (u ^ v ^ x); }
    bool operator < (const Edge& oth) const{
        return w < oth.w;
    }
} edge[MAX];
int label[MAX];

int par[MAX], sz[MAX], sum[MAX];

bool bad[MAX];

int find(int u){
    if(u == par[u]) return u;
    int v = find(par[u]);
    bad[u] |= bad[par[u]];
    return par[u] = v;
}

bool unite(int u, int v){
    u = find(u), v = find(v);
    if(u == v) return false;
    if(label[u] < label[v]) swap(u, v);
    if (label[u] > sum[v]) bad[v] = 1;
    sum[u] += sum[v];
    par[v] = u;
    return true;
}
void Whisper(){
    cin >> numNode >> numEdge;
    for (int i = 1; i <= numNode; ++i) cin >> label[i];
    FOR(i, 1, numNode){
        par[i] = i, sz[i] = 1, sum[i] = label[i];
    }

    vector<Edge> ed;
    for (int i = 1; i <= numEdge; ++i){
        cin >> edge[i].u >> edge[i].v;
        int w = max(label[edge[i].u], label[edge[i].v]);
        ed.push_back(Edge(edge[i].u, edge[i].v, w));
    }

    sort(ed.begin(), ed.end());
    for (int i = 0; i < numEdge; ++i){
        int u = ed[i].u, v = ed[i].v;
        unite(u, v);
    }
    for (int i = 1; i <= numNode; ++i){
        find(i);
        cout << !bad[i];
    }
}


signed main(){
    setupIO();
    int Test = 1;
//    cin >> Test;
    for ( int i = 1 ; i <= Test ; i++ ){
        Whisper();
        if (i < Test) cout << '\n';
    }
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 4 ms 8540 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8692 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8796 KB Output is correct
10 Correct 2 ms 8796 KB Output is correct
11 Correct 3 ms 8804 KB Output is correct
12 Correct 3 ms 8796 KB Output is correct
13 Correct 2 ms 8796 KB Output is correct
14 Correct 2 ms 8796 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 73 ms 22448 KB Output is correct
4 Correct 59 ms 20672 KB Output is correct
5 Correct 81 ms 22192 KB Output is correct
6 Correct 74 ms 22468 KB Output is correct
7 Correct 90 ms 22072 KB Output is correct
8 Correct 75 ms 21936 KB Output is correct
9 Correct 75 ms 22596 KB Output is correct
10 Correct 59 ms 20772 KB Output is correct
11 Correct 71 ms 22712 KB Output is correct
12 Correct 62 ms 20576 KB Output is correct
13 Correct 71 ms 20588 KB Output is correct
14 Correct 59 ms 20924 KB Output is correct
15 Correct 70 ms 21784 KB Output is correct
16 Correct 56 ms 21208 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 78 ms 22200 KB Output is correct
3 Correct 76 ms 21860 KB Output is correct
4 Correct 63 ms 21696 KB Output is correct
5 Correct 58 ms 20280 KB Output is correct
6 Correct 77 ms 22244 KB Output is correct
7 Correct 70 ms 22592 KB Output is correct
8 Correct 74 ms 21848 KB Output is correct
9 Correct 54 ms 21908 KB Output is correct
10 Correct 61 ms 21440 KB Output is correct
11 Correct 86 ms 21004 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 81 ms 22148 KB Output is correct
3 Correct 77 ms 22076 KB Output is correct
4 Correct 77 ms 22364 KB Output is correct
5 Correct 77 ms 22452 KB Output is correct
6 Correct 74 ms 21736 KB Output is correct
7 Correct 97 ms 23020 KB Output is correct
8 Correct 67 ms 20928 KB Output is correct
9 Correct 73 ms 19636 KB Output is correct
10 Correct 65 ms 20416 KB Output is correct
11 Correct 59 ms 20144 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8536 KB Output is correct
2 Correct 4 ms 8540 KB Output is correct
3 Correct 2 ms 6492 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8692 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8796 KB Output is correct
10 Correct 2 ms 8796 KB Output is correct
11 Correct 3 ms 8804 KB Output is correct
12 Correct 3 ms 8796 KB Output is correct
13 Correct 2 ms 8796 KB Output is correct
14 Correct 2 ms 8796 KB Output is correct
15 Correct 1 ms 8536 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 73 ms 22448 KB Output is correct
18 Correct 59 ms 20672 KB Output is correct
19 Correct 81 ms 22192 KB Output is correct
20 Correct 74 ms 22468 KB Output is correct
21 Correct 90 ms 22072 KB Output is correct
22 Correct 75 ms 21936 KB Output is correct
23 Correct 75 ms 22596 KB Output is correct
24 Correct 59 ms 20772 KB Output is correct
25 Correct 71 ms 22712 KB Output is correct
26 Correct 62 ms 20576 KB Output is correct
27 Correct 71 ms 20588 KB Output is correct
28 Correct 59 ms 20924 KB Output is correct
29 Correct 70 ms 21784 KB Output is correct
30 Correct 56 ms 21208 KB Output is correct
31 Correct 1 ms 6488 KB Output is correct
32 Correct 78 ms 22200 KB Output is correct
33 Correct 76 ms 21860 KB Output is correct
34 Correct 63 ms 21696 KB Output is correct
35 Correct 58 ms 20280 KB Output is correct
36 Correct 77 ms 22244 KB Output is correct
37 Correct 70 ms 22592 KB Output is correct
38 Correct 74 ms 21848 KB Output is correct
39 Correct 54 ms 21908 KB Output is correct
40 Correct 61 ms 21440 KB Output is correct
41 Correct 86 ms 21004 KB Output is correct
42 Correct 1 ms 6492 KB Output is correct
43 Correct 81 ms 22148 KB Output is correct
44 Correct 77 ms 22076 KB Output is correct
45 Correct 77 ms 22364 KB Output is correct
46 Correct 77 ms 22452 KB Output is correct
47 Correct 74 ms 21736 KB Output is correct
48 Correct 97 ms 23020 KB Output is correct
49 Correct 67 ms 20928 KB Output is correct
50 Correct 73 ms 19636 KB Output is correct
51 Correct 65 ms 20416 KB Output is correct
52 Correct 59 ms 20144 KB Output is correct
53 Correct 2 ms 8540 KB Output is correct
54 Correct 1 ms 8540 KB Output is correct
55 Correct 1 ms 6492 KB Output is correct
56 Correct 3 ms 8796 KB Output is correct
57 Correct 2 ms 8800 KB Output is correct
58 Correct 2 ms 8836 KB Output is correct
59 Correct 2 ms 8676 KB Output is correct
60 Correct 2 ms 8796 KB Output is correct
61 Correct 2 ms 8796 KB Output is correct
62 Correct 2 ms 8676 KB Output is correct
63 Correct 2 ms 8796 KB Output is correct
64 Correct 2 ms 8796 KB Output is correct
65 Correct 2 ms 8796 KB Output is correct
66 Correct 2 ms 8796 KB Output is correct
67 Correct 72 ms 22728 KB Output is correct
68 Correct 58 ms 20428 KB Output is correct
69 Correct 76 ms 21600 KB Output is correct
70 Correct 83 ms 21448 KB Output is correct
71 Correct 90 ms 21780 KB Output is correct
72 Correct 67 ms 21936 KB Output is correct
73 Correct 75 ms 21600 KB Output is correct
74 Correct 62 ms 21256 KB Output is correct
75 Correct 62 ms 21452 KB Output is correct
76 Correct 62 ms 20088 KB Output is correct
77 Correct 63 ms 20144 KB Output is correct
78 Correct 61 ms 21356 KB Output is correct
79 Correct 75 ms 22204 KB Output is correct
80 Correct 56 ms 20628 KB Output is correct
81 Correct 76 ms 21676 KB Output is correct
82 Correct 81 ms 21912 KB Output is correct
83 Correct 82 ms 22268 KB Output is correct
84 Correct 58 ms 20160 KB Output is correct
85 Correct 90 ms 21332 KB Output is correct
86 Correct 83 ms 22132 KB Output is correct
87 Correct 73 ms 21436 KB Output is correct
88 Correct 90 ms 20836 KB Output is correct
89 Correct 78 ms 20548 KB Output is correct
90 Correct 82 ms 21700 KB Output is correct
91 Correct 76 ms 22508 KB Output is correct
92 Correct 77 ms 22120 KB Output is correct
93 Correct 73 ms 22392 KB Output is correct
94 Correct 78 ms 21300 KB Output is correct
95 Correct 82 ms 23416 KB Output is correct
96 Correct 62 ms 21308 KB Output is correct
97 Correct 62 ms 20428 KB Output is correct
98 Correct 68 ms 20360 KB Output is correct
99 Correct 87 ms 20652 KB Output is correct
100 Correct 48 ms 18704 KB Output is correct
101 Correct 88 ms 20900 KB Output is correct
102 Correct 80 ms 21924 KB Output is correct
103 Correct 85 ms 20664 KB Output is correct
104 Correct 94 ms 22224 KB Output is correct