oj.uz

Submission #306764

# Submission time Handle Problem Language Result Execution time Memory
306764 2020-09-26T08:52:51 Z MrDomino Power Plant (JOI20_power) C++14
100 / 100
 308 ms 29752 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef long double ld;

const int N = (int) 2e5 + 7;
int n;
vector<int> g[N];
int v[N];
int dp[N];
int sum[N];
int sol;

void dfs(int a, int p)
{
    for (auto &b : g[a])
    {
        if (b != p)
        {
            dfs(b, a);
        }
    }
    sum[a] = 0;
    for (auto &b : g[a])
    {
        if (b != p)
        {
            sum[a] += dp[b];
        }
    }
    dp[a] = max(sum[a] - v[a], v[a]);
}

void reroot(int a, int p)
{
    sum[a] -= dp[p];
    dp[a] = max(sum[a] - v[a], v[a]);
    sum[p] += dp[a];
    dp[p] = max(sum[p] - v[p], v[p]);
}

void dfs_solve(int a, int p)
{
    sol = max(sol, dp[a]);
    for (auto &b : g[a])
    {
        if (b != p)
        {
            reroot(a, b);
            dfs_solve(b, a);
            reroot(b, a);
        }
    }
}

int main()
{
    ios::sync_with_stdio(0);
    cin.tie(0);

    cin >> n;
    for (int i = 1; i < n; i++)
    {
        int x, y;
        cin >> x >> y;
        g[x].push_back(y);
        g[y].push_back(x);
    }
    string s;
    cin >> s;
    for (int i = 1; i <= n; i++)
    {
        if (s[i - 1] == '1')
        {
            v[i] = 1;
            sol++;
        }
    }
    sol = min(sol, 2);
    dfs(1, -1);
    dfs_solve(1, -1);
    cout << sol << "\n";
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 5 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 5 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 5 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 5 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 3 ms 4992 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 5 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 5 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 5 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 5 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 3 ms 4992 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 5 ms 5120 KB Output is correct
23 Correct 4 ms 5120 KB Output is correct
24 Correct 5 ms 5120 KB Output is correct
25 Correct 4 ms 5120 KB Output is correct
26 Correct 5 ms 5120 KB Output is correct
27 Correct 5 ms 5120 KB Output is correct
28 Correct 5 ms 5120 KB Output is correct
29 Correct 5 ms 5248 KB Output is correct
30 Correct 5 ms 5248 KB Output is correct
31 Correct 5 ms 5120 KB Output is correct
32 Correct 5 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 5 ms 5120 KB Output is correct
35 Correct 5 ms 5120 KB Output is correct
36 Correct 4 ms 5120 KB Output is correct
37 Correct 5 ms 5120 KB Output is correct
38 Correct 4 ms 5120 KB Output is correct
39 Correct 5 ms 5248 KB Output is correct
40 Correct 4 ms 5120 KB Output is correct
41 Correct 6 ms 5248 KB Output is correct
42 Correct 5 ms 5120 KB Output is correct
43 Correct 5 ms 5120 KB Output is correct
44 Correct 4 ms 5120 KB Output is correct
45 Correct 4 ms 5120 KB Output is correct
46 Correct 4 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 5 ms 5248 KB Output is correct
49 Correct 4 ms 5248 KB Output is correct
50 Correct 5 ms 5120 KB Output is correct
51 Correct 6 ms 5120 KB Output is correct
52 Correct 4 ms 5120 KB Output is correct
53 Correct 5 ms 5120 KB Output is correct
54 Correct 5 ms 5120 KB Output is correct
55 Correct 5 ms 5120 KB Output is correct
56 Correct 4 ms 5120 KB Output is correct
57 Correct 5 ms 5248 KB Output is correct
58 Correct 6 ms 5120 KB Output is correct
59 Correct 5 ms 5096 KB Output is correct
60 Correct 5 ms 5248 KB Output is correct
61 Correct 4 ms 5120 KB Output is correct
62 Correct 5 ms 5248 KB Output is correct
63 Correct 4 ms 5120 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 5 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 5 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 5 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 5 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 3 ms 4992 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 5 ms 5120 KB Output is correct
23 Correct 4 ms 5120 KB Output is correct
24 Correct 5 ms 5120 KB Output is correct
25 Correct 4 ms 5120 KB Output is correct
26 Correct 5 ms 5120 KB Output is correct
27 Correct 5 ms 5120 KB Output is correct
28 Correct 5 ms 5120 KB Output is correct
29 Correct 5 ms 5248 KB Output is correct
30 Correct 5 ms 5248 KB Output is correct
31 Correct 5 ms 5120 KB Output is correct
32 Correct 5 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 5 ms 5120 KB Output is correct
35 Correct 5 ms 5120 KB Output is correct
36 Correct 4 ms 5120 KB Output is correct
37 Correct 5 ms 5120 KB Output is correct
38 Correct 4 ms 5120 KB Output is correct
39 Correct 5 ms 5248 KB Output is correct
40 Correct 4 ms 5120 KB Output is correct
41 Correct 6 ms 5248 KB Output is correct
42 Correct 5 ms 5120 KB Output is correct
43 Correct 5 ms 5120 KB Output is correct
44 Correct 4 ms 5120 KB Output is correct
45 Correct 4 ms 5120 KB Output is correct
46 Correct 4 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 5 ms 5248 KB Output is correct
49 Correct 4 ms 5248 KB Output is correct
50 Correct 5 ms 5120 KB Output is correct
51 Correct 6 ms 5120 KB Output is correct
52 Correct 4 ms 5120 KB Output is correct
53 Correct 5 ms 5120 KB Output is correct
54 Correct 5 ms 5120 KB Output is correct
55 Correct 5 ms 5120 KB Output is correct
56 Correct 4 ms 5120 KB Output is correct
57 Correct 5 ms 5248 KB Output is correct
58 Correct 6 ms 5120 KB Output is correct
59 Correct 5 ms 5096 KB Output is correct
60 Correct 5 ms 5248 KB Output is correct
61 Correct 4 ms 5120 KB Output is correct
62 Correct 5 ms 5248 KB Output is correct
63 Correct 4 ms 5120 KB Output is correct
64 Correct 234 ms 14048 KB Output is correct
65 Correct 229 ms 14136 KB Output is correct
66 Correct 227 ms 14128 KB Output is correct
67 Correct 229 ms 14136 KB Output is correct
68 Correct 226 ms 14116 KB Output is correct
69 Correct 228 ms 14132 KB Output is correct
70 Correct 227 ms 14020 KB Output is correct
71 Correct 232 ms 14048 KB Output is correct
72 Correct 210 ms 13308 KB Output is correct
73 Correct 278 ms 26680 KB Output is correct
74 Correct 276 ms 26584 KB Output is correct
75 Correct 217 ms 14008 KB Output is correct
76 Correct 223 ms 14016 KB Output is correct
77 Correct 235 ms 13948 KB Output is correct
78 Correct 240 ms 14008 KB Output is correct
79 Correct 239 ms 14016 KB Output is correct
80 Correct 239 ms 14008 KB Output is correct
81 Correct 182 ms 14452 KB Output is correct
82 Correct 197 ms 16888 KB Output is correct
83 Correct 242 ms 21948 KB Output is correct
84 Correct 249 ms 24136 KB Output is correct
85 Correct 243 ms 23748 KB Output is correct
86 Correct 223 ms 18104 KB Output is correct
87 Correct 215 ms 17588 KB Output is correct
88 Correct 205 ms 18036 KB Output is correct
89 Correct 208 ms 17992 KB Output is correct
90 Correct 201 ms 17820 KB Output is correct
91 Correct 204 ms 18076 KB Output is correct
92 Correct 226 ms 18472 KB Output is correct
93 Correct 225 ms 20800 KB Output is correct
94 Correct 208 ms 22512 KB Output is correct
95 Correct 203 ms 21308 KB Output is correct
96 Correct 207 ms 19364 KB Output is correct
97 Correct 205 ms 17812 KB Output is correct
98 Correct 205 ms 17512 KB Output is correct
99 Correct 210 ms 17076 KB Output is correct
100 Correct 215 ms 20380 KB Output is correct
101 Correct 229 ms 18280 KB Output is correct
102 Correct 198 ms 17540 KB Output is correct
103 Correct 222 ms 17368 KB Output is correct
104 Correct 129 ms 17000 KB Output is correct
105 Correct 267 ms 25524 KB Output is correct
106 Correct 122 ms 17516 KB Output is correct
107 Correct 117 ms 17508 KB Output is correct
108 Correct 308 ms 29332 KB Output is correct
109 Correct 145 ms 16876 KB Output is correct
110 Correct 277 ms 29752 KB Output is correct
111 Correct 205 ms 16712 KB Output is correct