oj.uz

Submission #561919

# Submission time Handle Problem Language Result Execution time Memory
561919 2022-05-13T18:43:39 Z 4fecta Power Plant (JOI20_power) C++17
100 / 100
 214 ms 30852 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define int ll
#define ld long double
#define pii pair<int, int>
#define f first
#define s second
#define boost() cin.tie(0), cin.sync_with_stdio(0)

const int MN = 200005;

int n, u, v, p[MN], dp[MN], ans;
char c;
vector<int> a[MN];

void dfs(int cur, int par) {
    int sum = 0;
    for (int nxt : a[cur]) {
        if (nxt == par) continue;
        dfs(nxt, cur);
        sum += dp[nxt];
    }
    if (p[cur]) dp[cur] = max(1ll, sum - 1);
    else dp[cur] = sum;
}

void dfs(int cur, int par, int psum) {
    int sum = 0;
    for (int nxt : a[cur]) {
        if (nxt == par) sum += psum;
        else sum += dp[nxt];
    }
    if (p[cur] && a[cur].size() == 1) ans = max(ans, sum + 1);
    else if (p[cur]) ans = max({ans, 1ll, sum - 1});
    else ans = max(ans, sum);
    for (int nxt : a[cur]) {
        if (nxt == par) continue;
        if (!p[cur]) dfs(nxt, cur, sum - dp[nxt]);
        else dfs(nxt, cur, max(1ll, sum - dp[nxt] - 1));
    }
}

int32_t main() {
    boost();

    cin >> n;
    for (int i = 1; i < n; i++) {
        cin >> u >> v;
        a[u].push_back(v);
        a[v].push_back(u);
    }
    for (int i = 1; i <= n; i++) cin >> c, p[i] = c - '0';
    dfs(1, 0);
    dfs(1, 0, 0);
    printf("%lld\n", ans);

    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 5024 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4912 KB Output is correct
8 Correct 3 ms 5032 KB Output is correct
9 Correct 3 ms 5032 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 4 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 5028 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 5024 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4912 KB Output is correct
8 Correct 3 ms 5032 KB Output is correct
9 Correct 3 ms 5032 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 4 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 5028 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 4 ms 5076 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 5 ms 5040 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 4 ms 5204 KB Output is correct
30 Correct 4 ms 5168 KB Output is correct
31 Correct 4 ms 5128 KB Output is correct
32 Correct 5 ms 5292 KB Output is correct
33 Correct 4 ms 5076 KB Output is correct
34 Correct 4 ms 5040 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 4 ms 5076 KB Output is correct
37 Correct 3 ms 5036 KB Output is correct
38 Correct 4 ms 5040 KB Output is correct
39 Correct 4 ms 5204 KB Output is correct
40 Correct 4 ms 5092 KB Output is correct
41 Correct 4 ms 5204 KB Output is correct
42 Correct 4 ms 5076 KB Output is correct
43 Correct 4 ms 5076 KB Output is correct
44 Correct 4 ms 5164 KB Output is correct
45 Correct 4 ms 5076 KB Output is correct
46 Correct 5 ms 5164 KB Output is correct
47 Correct 5 ms 5164 KB Output is correct
48 Correct 4 ms 5204 KB Output is correct
49 Correct 4 ms 5204 KB Output is correct
50 Correct 4 ms 5076 KB Output is correct
51 Correct 3 ms 5164 KB Output is correct
52 Correct 3 ms 5076 KB Output is correct
53 Correct 3 ms 5168 KB Output is correct
54 Correct 4 ms 5076 KB Output is correct
55 Correct 4 ms 5076 KB Output is correct
56 Correct 3 ms 5076 KB Output is correct
57 Correct 4 ms 5204 KB Output is correct
58 Correct 3 ms 5076 KB Output is correct
59 Correct 5 ms 5172 KB Output is correct
60 Correct 4 ms 5204 KB Output is correct
61 Correct 4 ms 5076 KB Output is correct
62 Correct 4 ms 5168 KB Output is correct
63 Correct 5 ms 5124 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 2 ms 5024 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4912 KB Output is correct
8 Correct 3 ms 5032 KB Output is correct
9 Correct 3 ms 5032 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 4 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 5028 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 4 ms 5076 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 5 ms 5040 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 4 ms 5204 KB Output is correct
30 Correct 4 ms 5168 KB Output is correct
31 Correct 4 ms 5128 KB Output is correct
32 Correct 5 ms 5292 KB Output is correct
33 Correct 4 ms 5076 KB Output is correct
34 Correct 4 ms 5040 KB Output is correct
35 Correct 3 ms 5076 KB Output is correct
36 Correct 4 ms 5076 KB Output is correct
37 Correct 3 ms 5036 KB Output is correct
38 Correct 4 ms 5040 KB Output is correct
39 Correct 4 ms 5204 KB Output is correct
40 Correct 4 ms 5092 KB Output is correct
41 Correct 4 ms 5204 KB Output is correct
42 Correct 4 ms 5076 KB Output is correct
43 Correct 4 ms 5076 KB Output is correct
44 Correct 4 ms 5164 KB Output is correct
45 Correct 4 ms 5076 KB Output is correct
46 Correct 5 ms 5164 KB Output is correct
47 Correct 5 ms 5164 KB Output is correct
48 Correct 4 ms 5204 KB Output is correct
49 Correct 4 ms 5204 KB Output is correct
50 Correct 4 ms 5076 KB Output is correct
51 Correct 3 ms 5164 KB Output is correct
52 Correct 3 ms 5076 KB Output is correct
53 Correct 3 ms 5168 KB Output is correct
54 Correct 4 ms 5076 KB Output is correct
55 Correct 4 ms 5076 KB Output is correct
56 Correct 3 ms 5076 KB Output is correct
57 Correct 4 ms 5204 KB Output is correct
58 Correct 3 ms 5076 KB Output is correct
59 Correct 5 ms 5172 KB Output is correct
60 Correct 4 ms 5204 KB Output is correct
61 Correct 4 ms 5076 KB Output is correct
62 Correct 4 ms 5168 KB Output is correct
63 Correct 5 ms 5124 KB Output is correct
64 Correct 158 ms 18124 KB Output is correct
65 Correct 177 ms 18112 KB Output is correct
66 Correct 165 ms 18336 KB Output is correct
67 Correct 180 ms 18208 KB Output is correct
68 Correct 170 ms 18152 KB Output is correct
69 Correct 158 ms 18212 KB Output is correct
70 Correct 167 ms 18084 KB Output is correct
71 Correct 168 ms 18124 KB Output is correct
72 Correct 152 ms 18176 KB Output is correct
73 Correct 193 ms 29892 KB Output is correct
74 Correct 201 ms 29780 KB Output is correct
75 Correct 148 ms 19408 KB Output is correct
76 Correct 168 ms 19428 KB Output is correct
77 Correct 200 ms 18180 KB Output is correct
78 Correct 184 ms 18112 KB Output is correct
79 Correct 181 ms 18292 KB Output is correct
80 Correct 206 ms 18192 KB Output is correct
81 Correct 132 ms 18080 KB Output is correct
82 Correct 178 ms 18128 KB Output is correct
83 Correct 197 ms 23392 KB Output is correct
84 Correct 214 ms 25432 KB Output is correct
85 Correct 196 ms 25112 KB Output is correct
86 Correct 186 ms 19460 KB Output is correct
87 Correct 192 ms 18968 KB Output is correct
88 Correct 169 ms 19076 KB Output is correct
89 Correct 180 ms 19112 KB Output is correct
90 Correct 173 ms 18892 KB Output is correct
91 Correct 187 ms 19000 KB Output is correct
92 Correct 172 ms 19404 KB Output is correct
93 Correct 196 ms 21560 KB Output is correct
94 Correct 197 ms 23176 KB Output is correct
95 Correct 184 ms 22092 KB Output is correct
96 Correct 185 ms 20260 KB Output is correct
97 Correct 180 ms 18712 KB Output is correct
98 Correct 180 ms 18312 KB Output is correct
99 Correct 179 ms 18296 KB Output is correct
100 Correct 176 ms 21240 KB Output is correct
101 Correct 195 ms 19032 KB Output is correct
102 Correct 169 ms 18428 KB Output is correct
103 Correct 153 ms 18572 KB Output is correct
104 Correct 93 ms 18748 KB Output is correct
105 Correct 193 ms 26656 KB Output is correct
106 Correct 82 ms 18584 KB Output is correct
107 Correct 86 ms 18640 KB Output is correct
108 Correct 210 ms 30524 KB Output is correct
109 Correct 78 ms 18788 KB Output is correct
110 Correct 189 ms 30852 KB Output is correct
111 Correct 168 ms 18160 KB Output is correct