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Submission #962637

# Submission time Handle Problem Language Result Execution time Memory
962637 2024-04-14T05:05:20 Z Whisper Stranded Far From Home (BOI22_island) C++17
100 / 100
 93 ms 21420 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 2 ms 8536 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 8612 KB Output is correct
6 Correct 2 ms 8792 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 3 ms 8796 KB Output is correct
9 Correct 2 ms 8796 KB Output is correct
10 Correct 3 ms 8708 KB Output is correct
11 Correct 2 ms 8676 KB Output is correct
12 Correct 2 ms 8704 KB Output is correct
13 Correct 2 ms 8672 KB Output is correct
14 Correct 2 ms 8672 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 8540 KB Output is correct
2 Correct 1 ms 6612 KB Output is correct
3 Correct 76 ms 20268 KB Output is correct
4 Correct 69 ms 18784 KB Output is correct
5 Correct 70 ms 20040 KB Output is correct
6 Correct 72 ms 20676 KB Output is correct
7 Correct 75 ms 20676 KB Output is correct
8 Correct 80 ms 19856 KB Output is correct
9 Correct 82 ms 20160 KB Output is correct
10 Correct 55 ms 20028 KB Output is correct
11 Correct 63 ms 20672 KB Output is correct
12 Correct 59 ms 20416 KB Output is correct
13 Correct 55 ms 19640 KB Output is correct
14 Correct 62 ms 19764 KB Output is correct
15 Correct 70 ms 20796 KB Output is correct
16 Correct 54 ms 19612 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 74 ms 20288 KB Output is correct
3 Correct 80 ms 20400 KB Output is correct
4 Correct 64 ms 20160 KB Output is correct
5 Correct 55 ms 19168 KB Output is correct
6 Correct 93 ms 19548 KB Output is correct
7 Correct 75 ms 20692 KB Output is correct
8 Correct 77 ms 19712 KB Output is correct
9 Correct 60 ms 20400 KB Output is correct
10 Correct 61 ms 19652 KB Output is correct
11 Correct 59 ms 19056 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 87 ms 21260 KB Output is correct
3 Correct 71 ms 21420 KB Output is correct
4 Correct 75 ms 21076 KB Output is correct
5 Correct 69 ms 21048 KB Output is correct
6 Correct 68 ms 20932 KB Output is correct
7 Correct 66 ms 21308 KB Output is correct
8 Correct 55 ms 19848 KB Output is correct
9 Correct 64 ms 18628 KB Output is correct
10 Correct 70 ms 18992 KB Output is correct
11 Correct 64 ms 19516 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 2 ms 8536 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 8612 KB Output is correct
6 Correct 2 ms 8792 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 3 ms 8796 KB Output is correct
9 Correct 2 ms 8796 KB Output is correct
10 Correct 3 ms 8708 KB Output is correct
11 Correct 2 ms 8676 KB Output is correct
12 Correct 2 ms 8704 KB Output is correct
13 Correct 2 ms 8672 KB Output is correct
14 Correct 2 ms 8672 KB Output is correct
15 Correct 1 ms 8540 KB Output is correct
16 Correct 1 ms 6612 KB Output is correct
17 Correct 76 ms 20268 KB Output is correct
18 Correct 69 ms 18784 KB Output is correct
19 Correct 70 ms 20040 KB Output is correct
20 Correct 72 ms 20676 KB Output is correct
21 Correct 75 ms 20676 KB Output is correct
22 Correct 80 ms 19856 KB Output is correct
23 Correct 82 ms 20160 KB Output is correct
24 Correct 55 ms 20028 KB Output is correct
25 Correct 63 ms 20672 KB Output is correct
26 Correct 59 ms 20416 KB Output is correct
27 Correct 55 ms 19640 KB Output is correct
28 Correct 62 ms 19764 KB Output is correct
29 Correct 70 ms 20796 KB Output is correct
30 Correct 54 ms 19612 KB Output is correct
31 Correct 1 ms 6492 KB Output is correct
32 Correct 74 ms 20288 KB Output is correct
33 Correct 80 ms 20400 KB Output is correct
34 Correct 64 ms 20160 KB Output is correct
35 Correct 55 ms 19168 KB Output is correct
36 Correct 93 ms 19548 KB Output is correct
37 Correct 75 ms 20692 KB Output is correct
38 Correct 77 ms 19712 KB Output is correct
39 Correct 60 ms 20400 KB Output is correct
40 Correct 61 ms 19652 KB Output is correct
41 Correct 59 ms 19056 KB Output is correct
42 Correct 1 ms 6492 KB Output is correct
43 Correct 87 ms 21260 KB Output is correct
44 Correct 71 ms 21420 KB Output is correct
45 Correct 75 ms 21076 KB Output is correct
46 Correct 69 ms 21048 KB Output is correct
47 Correct 68 ms 20932 KB Output is correct
48 Correct 66 ms 21308 KB Output is correct
49 Correct 55 ms 19848 KB Output is correct
50 Correct 64 ms 18628 KB Output is correct
51 Correct 70 ms 18992 KB Output is correct
52 Correct 64 ms 19516 KB Output is correct
53 Correct 1 ms 8540 KB Output is correct
54 Correct 1 ms 8540 KB Output is correct
55 Correct 1 ms 6488 KB Output is correct
56 Correct 2 ms 8796 KB Output is correct
57 Correct 2 ms 8796 KB Output is correct
58 Correct 2 ms 8796 KB Output is correct
59 Correct 2 ms 8796 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 8796 KB Output is correct
63 Correct 2 ms 8796 KB Output is correct
64 Correct 2 ms 8792 KB Output is correct
65 Correct 2 ms 8796 KB Output is correct
66 Correct 2 ms 8796 KB Output is correct
67 Correct 71 ms 20768 KB Output is correct
68 Correct 61 ms 20148 KB Output is correct
69 Correct 68 ms 20396 KB Output is correct
70 Correct 89 ms 20672 KB Output is correct
71 Correct 82 ms 20464 KB Output is correct
72 Correct 73 ms 19908 KB Output is correct
73 Correct 67 ms 19396 KB Output is correct
74 Correct 58 ms 20416 KB Output is correct
75 Correct 78 ms 20916 KB Output is correct
76 Correct 76 ms 20848 KB Output is correct
77 Correct 68 ms 19956 KB Output is correct
78 Correct 62 ms 19776 KB Output is correct
79 Correct 91 ms 21392 KB Output is correct
80 Correct 59 ms 19364 KB Output is correct
81 Correct 74 ms 21088 KB Output is correct
82 Correct 83 ms 20940 KB Output is correct
83 Correct 68 ms 19912 KB Output is correct
84 Correct 56 ms 19080 KB Output is correct
85 Correct 88 ms 17276 KB Output is correct
86 Correct 67 ms 18440 KB Output is correct
87 Correct 87 ms 17860 KB Output is correct
88 Correct 68 ms 17088 KB Output is correct
89 Correct 59 ms 18912 KB Output is correct
90 Correct 71 ms 18112 KB Output is correct
91 Correct 75 ms 17448 KB Output is correct
92 Correct 79 ms 18368 KB Output is correct
93 Correct 83 ms 18116 KB Output is correct
94 Correct 78 ms 18116 KB Output is correct
95 Correct 65 ms 19384 KB Output is correct
96 Correct 59 ms 17560 KB Output is correct
97 Correct 58 ms 17856 KB Output is correct
98 Correct 59 ms 18624 KB Output is correct
99 Correct 58 ms 17084 KB Output is correct
100 Correct 41 ms 18124 KB Output is correct
101 Correct 82 ms 18628 KB Output is correct
102 Correct 75 ms 17596 KB Output is correct
103 Correct 84 ms 18240 KB Output is correct
104 Correct 80 ms 18376 KB Output is correct