oj.uz

답안 #331881

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
331881 2020-11-30T15:45:53 Z phathnv Power Plant (JOI20_power) C++11
100 / 100
 214 ms 30508 KB 
#include <bits/stdc++.h>

#define mp make_pair
#define X first
#define Y second

using namespace std;

typedef long long ll;
typedef pair <int, int> ii;

const int N = 2e5 + 1;

int n;
vector <int> adj[N];
string s;
int a[N], dp[N][2];

void readInput(){
    cin >> n;
    for(int i = 1; i < n; i++){
        int u, v;
        cin >> u >> v;
        adj[u].push_back(v);
        adj[v].push_back(u);
    }
    cin >> s;
}

void dfs(int u, int p){
    dp[u][0] = -a[u];
    dp[u][1] = a[u];
    int maxVal = 0;
    for(int v : adj[u]){
        if (v == p)
            continue;
        dfs(v, u);
        dp[u][0] += max(a[v], dp[v][0]);
        maxVal = max(maxVal, dp[v][0]);
        maxVal = max(maxVal, a[v]);
    }
    dp[u][1] += maxVal;
    dp[u][0] = max(dp[u][0], dp[u][1] - 2 * a[u]);
}

void solve(){
    for(int i = 1; i <= n; i++)
        a[i] = s[i - 1] - '0';
    dfs(1, -1);
    int res = 0;
    for(int i = 1; i <= n; i++){
        //cerr << i << ' ' << dp[i][0] << ' ' << dp[i][1] << endl;
        res = max(res, dp[i][0]);
        res = max(res, dp[i][1]);
    }
    cout << res;
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    readInput();
    solve();
    return 0;
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 4 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 5 ms 5100 KB Output is correct
10 Correct 5 ms 5100 KB Output is correct
11 Correct 4 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 4 ms 5100 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 5100 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 4 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 5 ms 5100 KB Output is correct
10 Correct 5 ms 5100 KB Output is correct
11 Correct 4 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 4 ms 5100 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 5100 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 5 ms 5100 KB Output is correct
24 Correct 5 ms 5100 KB Output is correct
25 Correct 5 ms 5100 KB Output is correct
26 Correct 5 ms 5100 KB Output is correct
27 Correct 5 ms 5100 KB Output is correct
28 Correct 5 ms 5100 KB Output is correct
29 Correct 5 ms 5228 KB Output is correct
30 Correct 5 ms 5228 KB Output is correct
31 Correct 5 ms 5100 KB Output is correct
32 Correct 5 ms 5100 KB Output is correct
33 Correct 5 ms 5100 KB Output is correct
34 Correct 5 ms 5100 KB Output is correct
35 Correct 4 ms 5100 KB Output is correct
36 Correct 5 ms 5100 KB Output is correct
37 Correct 5 ms 5100 KB Output is correct
38 Correct 5 ms 5100 KB Output is correct
39 Correct 5 ms 5228 KB Output is correct
40 Correct 5 ms 5228 KB Output is correct
41 Correct 4 ms 5228 KB Output is correct
42 Correct 5 ms 5228 KB Output is correct
43 Correct 6 ms 5100 KB Output is correct
44 Correct 5 ms 5228 KB Output is correct
45 Correct 4 ms 5228 KB Output is correct
46 Correct 5 ms 5228 KB Output is correct
47 Correct 5 ms 5228 KB Output is correct
48 Correct 6 ms 5228 KB Output is correct
49 Correct 5 ms 5228 KB Output is correct
50 Correct 5 ms 5228 KB Output is correct
51 Correct 5 ms 5228 KB Output is correct
52 Correct 5 ms 5100 KB Output is correct
53 Correct 4 ms 5228 KB Output is correct
54 Correct 5 ms 5228 KB Output is correct
55 Correct 5 ms 5228 KB Output is correct
56 Correct 6 ms 5100 KB Output is correct
57 Correct 5 ms 5228 KB Output is correct
58 Correct 5 ms 5248 KB Output is correct
59 Correct 5 ms 5100 KB Output is correct
60 Correct 5 ms 5228 KB Output is correct
61 Correct 5 ms 5100 KB Output is correct
62 Correct 5 ms 5228 KB Output is correct
63 Correct 5 ms 5100 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 4 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 4 ms 5120 KB Output is correct
6 Correct 4 ms 5100 KB Output is correct
7 Correct 4 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 5 ms 5100 KB Output is correct
10 Correct 5 ms 5100 KB Output is correct
11 Correct 4 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5100 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 4 ms 5100 KB Output is correct
19 Correct 4 ms 5100 KB Output is correct
20 Correct 4 ms 5100 KB Output is correct
21 Correct 4 ms 5100 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 5 ms 5100 KB Output is correct
24 Correct 5 ms 5100 KB Output is correct
25 Correct 5 ms 5100 KB Output is correct
26 Correct 5 ms 5100 KB Output is correct
27 Correct 5 ms 5100 KB Output is correct
28 Correct 5 ms 5100 KB Output is correct
29 Correct 5 ms 5228 KB Output is correct
30 Correct 5 ms 5228 KB Output is correct
31 Correct 5 ms 5100 KB Output is correct
32 Correct 5 ms 5100 KB Output is correct
33 Correct 5 ms 5100 KB Output is correct
34 Correct 5 ms 5100 KB Output is correct
35 Correct 4 ms 5100 KB Output is correct
36 Correct 5 ms 5100 KB Output is correct
37 Correct 5 ms 5100 KB Output is correct
38 Correct 5 ms 5100 KB Output is correct
39 Correct 5 ms 5228 KB Output is correct
40 Correct 5 ms 5228 KB Output is correct
41 Correct 4 ms 5228 KB Output is correct
42 Correct 5 ms 5228 KB Output is correct
43 Correct 6 ms 5100 KB Output is correct
44 Correct 5 ms 5228 KB Output is correct
45 Correct 4 ms 5228 KB Output is correct
46 Correct 5 ms 5228 KB Output is correct
47 Correct 5 ms 5228 KB Output is correct
48 Correct 6 ms 5228 KB Output is correct
49 Correct 5 ms 5228 KB Output is correct
50 Correct 5 ms 5228 KB Output is correct
51 Correct 5 ms 5228 KB Output is correct
52 Correct 5 ms 5100 KB Output is correct
53 Correct 4 ms 5228 KB Output is correct
54 Correct 5 ms 5228 KB Output is correct
55 Correct 5 ms 5228 KB Output is correct
56 Correct 6 ms 5100 KB Output is correct
57 Correct 5 ms 5228 KB Output is correct
58 Correct 5 ms 5248 KB Output is correct
59 Correct 5 ms 5100 KB Output is correct
60 Correct 5 ms 5228 KB Output is correct
61 Correct 5 ms 5100 KB Output is correct
62 Correct 5 ms 5228 KB Output is correct
63 Correct 5 ms 5100 KB Output is correct
64 Correct 173 ms 16816 KB Output is correct
65 Correct 180 ms 16940 KB Output is correct
66 Correct 172 ms 16792 KB Output is correct
67 Correct 181 ms 16812 KB Output is correct
68 Correct 190 ms 16792 KB Output is correct
69 Correct 181 ms 16808 KB Output is correct
70 Correct 179 ms 16828 KB Output is correct
71 Correct 205 ms 16824 KB Output is correct
72 Correct 180 ms 16808 KB Output is correct
73 Correct 200 ms 29404 KB Output is correct
74 Correct 213 ms 29356 KB Output is correct
75 Correct 189 ms 16808 KB Output is correct
76 Correct 169 ms 16688 KB Output is correct
77 Correct 176 ms 16808 KB Output is correct
78 Correct 193 ms 16680 KB Output is correct
79 Correct 183 ms 16816 KB Output is correct
80 Correct 182 ms 16680 KB Output is correct
81 Correct 138 ms 17124 KB Output is correct
82 Correct 172 ms 16940 KB Output is correct
83 Correct 192 ms 21936 KB Output is correct
84 Correct 188 ms 24116 KB Output is correct
85 Correct 192 ms 23992 KB Output is correct
86 Correct 182 ms 18092 KB Output is correct
87 Correct 179 ms 17648 KB Output is correct
88 Correct 169 ms 18024 KB Output is correct
89 Correct 175 ms 18104 KB Output is correct
90 Correct 170 ms 17804 KB Output is correct
91 Correct 164 ms 18064 KB Output is correct
92 Correct 200 ms 18584 KB Output is correct
93 Correct 166 ms 20904 KB Output is correct
94 Correct 159 ms 22500 KB Output is correct
95 Correct 152 ms 21092 KB Output is correct
96 Correct 179 ms 19480 KB Output is correct
97 Correct 171 ms 17796 KB Output is correct
98 Correct 162 ms 17372 KB Output is correct
99 Correct 172 ms 17192 KB Output is correct
100 Correct 156 ms 20376 KB Output is correct
101 Correct 170 ms 18344 KB Output is correct
102 Correct 166 ms 17532 KB Output is correct
103 Correct 171 ms 17356 KB Output is correct
104 Correct 105 ms 17760 KB Output is correct
105 Correct 199 ms 26156 KB Output is correct
106 Correct 100 ms 17504 KB Output is correct
107 Correct 112 ms 17504 KB Output is correct
108 Correct 214 ms 30252 KB Output is correct
109 Correct 108 ms 17632 KB Output is correct
110 Correct 201 ms 30508 KB Output is correct
111 Correct 172 ms 16824 KB Output is correct