oj.uz

Submission #788831

# Submission time Handle Problem Language Result Execution time Memory
788831 2023-07-20T16:35:22 Z Ozy Stranded Far From Home (BOI22_island) C++17
100 / 100
 195 ms 41332 KB 
#include <iostream>
#include <bits/stdc++.h>
using namespace std;
#define lli long long int
#define debug(a) cout << #a << " = " << a << endl
#define debugsl(a) cout << #a << " = " << a << ", "
#define rep(i,a,b) for(int i = (a); i<=(b); i++)
#define repa(i,a,b) for(int i = (a); i>=(b); i--)
#define pll pair<lli,lli>

#define MAX 200000
//para el vector de orden
#define id second

lli n,m,a,b,total;
lli arr[MAX+2],raiz[MAX+2],uf[MAX+2],sum[MAX+2],res[MAX+2];
vector<lli> aristas[MAX+2],n_arbol[MAX+2];
vector<pll> orden;

lli sube(lli pos) {
    //debugsl(pos);
    //debug(uf[pos]);

    if (uf[pos] == pos) return pos;
    uf[pos] = sube(uf[pos]);
    return uf[pos];
}

void dfs(lli pos) {
    res[pos] = 1;
    for(auto h : n_arbol[pos]) dfs(h);
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> n >> m;
    rep(i,1,n) {
        cin >> arr[i];
        orden.push_back({arr[i],i});
        uf[i] = i;
        sum[i] = arr[i];
        raiz[i] = 1;
        total += arr[i];
    }
    rep(i,1,m) {
        cin >> a >> b;
        aristas[a].push_back(b);
        aristas[b].push_back(a);
    }
    sort(orden.begin(), orden.end());

    //debug("llego");

    for(auto act : orden) {

        //debugsl(act.first);
        //debug(act.id);
        lli soy = sube(act.id);

        for(auto h : aristas[act.id]) {
            if (arr[h] > arr[act.id]) continue;

            //debug("llego");
            //debugsl(h);
            //debug(uf[1]);

            a = sube(h);
            if(a == soy) continue;

            if (sum[a] >= arr[act.id]) {
                n_arbol[soy].push_back(a);
                raiz[a] = 0;
            }
            sum[soy] += sum[a];
            uf[a] = soy;
        }

    }

    //debug("salgo");

    rep(i,1,n) {
        if (!raiz[i]) continue;
        if (sum[i] == total) dfs(i);
    }

    rep(i,1,n) cout << res[i];

    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 4 ms 9704 KB Output is correct
3 Correct 5 ms 9812 KB Output is correct
4 Correct 5 ms 9972 KB Output is correct
5 Correct 5 ms 9940 KB Output is correct
6 Correct 5 ms 9940 KB Output is correct
7 Correct 6 ms 9940 KB Output is correct
8 Correct 6 ms 9864 KB Output is correct
9 Correct 6 ms 9940 KB Output is correct
10 Correct 6 ms 9860 KB Output is correct
11 Correct 5 ms 9932 KB Output is correct
12 Correct 5 ms 9940 KB Output is correct
13 Correct 5 ms 9960 KB Output is correct
14 Correct 5 ms 9940 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 4 ms 9728 KB Output is correct
3 Correct 115 ms 37280 KB Output is correct
4 Correct 92 ms 33272 KB Output is correct
5 Correct 150 ms 34120 KB Output is correct
6 Correct 127 ms 34852 KB Output is correct
7 Correct 130 ms 34992 KB Output is correct
8 Correct 123 ms 36204 KB Output is correct
9 Correct 155 ms 33596 KB Output is correct
10 Correct 84 ms 30624 KB Output is correct
11 Correct 106 ms 35604 KB Output is correct
12 Correct 123 ms 32032 KB Output is correct
13 Correct 85 ms 32044 KB Output is correct
14 Correct 88 ms 32276 KB Output is correct
15 Correct 105 ms 41304 KB Output is correct
16 Correct 78 ms 40320 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 9684 KB Output is correct
2 Correct 173 ms 33768 KB Output is correct
3 Correct 141 ms 33956 KB Output is correct
4 Correct 112 ms 35116 KB Output is correct
5 Correct 97 ms 31544 KB Output is correct
6 Correct 132 ms 34000 KB Output is correct
7 Correct 121 ms 41272 KB Output is correct
8 Correct 126 ms 41276 KB Output is correct
9 Correct 80 ms 40324 KB Output is correct
10 Correct 122 ms 35712 KB Output is correct
11 Correct 118 ms 31868 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 153 ms 35320 KB Output is correct
3 Correct 174 ms 35144 KB Output is correct
4 Correct 155 ms 35420 KB Output is correct
5 Correct 147 ms 35592 KB Output is correct
6 Correct 134 ms 34812 KB Output is correct
7 Correct 122 ms 39336 KB Output is correct
8 Correct 85 ms 36824 KB Output is correct
9 Correct 85 ms 25636 KB Output is correct
10 Correct 119 ms 32580 KB Output is correct
11 Correct 111 ms 31972 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 9684 KB Output is correct
2 Correct 4 ms 9704 KB Output is correct
3 Correct 5 ms 9812 KB Output is correct
4 Correct 5 ms 9972 KB Output is correct
5 Correct 5 ms 9940 KB Output is correct
6 Correct 5 ms 9940 KB Output is correct
7 Correct 6 ms 9940 KB Output is correct
8 Correct 6 ms 9864 KB Output is correct
9 Correct 6 ms 9940 KB Output is correct
10 Correct 6 ms 9860 KB Output is correct
11 Correct 5 ms 9932 KB Output is correct
12 Correct 5 ms 9940 KB Output is correct
13 Correct 5 ms 9960 KB Output is correct
14 Correct 5 ms 9940 KB Output is correct
15 Correct 5 ms 9684 KB Output is correct
16 Correct 4 ms 9728 KB Output is correct
17 Correct 115 ms 37280 KB Output is correct
18 Correct 92 ms 33272 KB Output is correct
19 Correct 150 ms 34120 KB Output is correct
20 Correct 127 ms 34852 KB Output is correct
21 Correct 130 ms 34992 KB Output is correct
22 Correct 123 ms 36204 KB Output is correct
23 Correct 155 ms 33596 KB Output is correct
24 Correct 84 ms 30624 KB Output is correct
25 Correct 106 ms 35604 KB Output is correct
26 Correct 123 ms 32032 KB Output is correct
27 Correct 85 ms 32044 KB Output is correct
28 Correct 88 ms 32276 KB Output is correct
29 Correct 105 ms 41304 KB Output is correct
30 Correct 78 ms 40320 KB Output is correct
31 Correct 6 ms 9684 KB Output is correct
32 Correct 173 ms 33768 KB Output is correct
33 Correct 141 ms 33956 KB Output is correct
34 Correct 112 ms 35116 KB Output is correct
35 Correct 97 ms 31544 KB Output is correct
36 Correct 132 ms 34000 KB Output is correct
37 Correct 121 ms 41272 KB Output is correct
38 Correct 126 ms 41276 KB Output is correct
39 Correct 80 ms 40324 KB Output is correct
40 Correct 122 ms 35712 KB Output is correct
41 Correct 118 ms 31868 KB Output is correct
42 Correct 4 ms 9684 KB Output is correct
43 Correct 153 ms 35320 KB Output is correct
44 Correct 174 ms 35144 KB Output is correct
45 Correct 155 ms 35420 KB Output is correct
46 Correct 147 ms 35592 KB Output is correct
47 Correct 134 ms 34812 KB Output is correct
48 Correct 122 ms 39336 KB Output is correct
49 Correct 85 ms 36824 KB Output is correct
50 Correct 85 ms 25636 KB Output is correct
51 Correct 119 ms 32580 KB Output is correct
52 Correct 111 ms 31972 KB Output is correct
53 Correct 4 ms 9724 KB Output is correct
54 Correct 4 ms 9724 KB Output is correct
55 Correct 4 ms 9728 KB Output is correct
56 Correct 7 ms 10104 KB Output is correct
57 Correct 6 ms 9940 KB Output is correct
58 Correct 5 ms 9864 KB Output is correct
59 Correct 5 ms 9860 KB Output is correct
60 Correct 5 ms 9940 KB Output is correct
61 Correct 5 ms 9940 KB Output is correct
62 Correct 5 ms 9864 KB Output is correct
63 Correct 6 ms 9940 KB Output is correct
64 Correct 5 ms 9976 KB Output is correct
65 Correct 5 ms 9892 KB Output is correct
66 Correct 6 ms 9940 KB Output is correct
67 Correct 110 ms 37264 KB Output is correct
68 Correct 94 ms 33228 KB Output is correct
69 Correct 114 ms 34116 KB Output is correct
70 Correct 116 ms 34920 KB Output is correct
71 Correct 121 ms 34956 KB Output is correct
72 Correct 120 ms 36084 KB Output is correct
73 Correct 120 ms 33596 KB Output is correct
74 Correct 91 ms 30664 KB Output is correct
75 Correct 108 ms 35640 KB Output is correct
76 Correct 107 ms 32064 KB Output is correct
77 Correct 101 ms 32072 KB Output is correct
78 Correct 97 ms 32196 KB Output is correct
79 Correct 110 ms 41312 KB Output is correct
80 Correct 87 ms 40248 KB Output is correct
81 Correct 177 ms 33848 KB Output is correct
82 Correct 149 ms 34052 KB Output is correct
83 Correct 110 ms 35128 KB Output is correct
84 Correct 92 ms 31504 KB Output is correct
85 Correct 148 ms 33972 KB Output is correct
86 Correct 176 ms 41268 KB Output is correct
87 Correct 119 ms 41332 KB Output is correct
88 Correct 114 ms 35692 KB Output is correct
89 Correct 129 ms 31952 KB Output is correct
90 Correct 195 ms 35300 KB Output is correct
91 Correct 149 ms 35132 KB Output is correct
92 Correct 193 ms 35488 KB Output is correct
93 Correct 172 ms 35692 KB Output is correct
94 Correct 156 ms 34876 KB Output is correct
95 Correct 105 ms 39316 KB Output is correct
96 Correct 81 ms 36816 KB Output is correct
97 Correct 90 ms 25724 KB Output is correct
98 Correct 152 ms 32600 KB Output is correct
99 Correct 131 ms 31984 KB Output is correct
100 Correct 35 ms 16332 KB Output is correct
101 Correct 160 ms 35144 KB Output is correct
102 Correct 136 ms 31464 KB Output is correct
103 Correct 156 ms 33264 KB Output is correct
104 Correct 152 ms 35152 KB Output is correct