oj.uz

답안 #355557

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
355557 2021-01-22T17:19:54 Z Lam_lai_cuoc_doi Power Plant (JOI20_power) C++17
100 / 100
 193 ms 27032 KB 
#include <iostream>
#include <cstdio>
#include <vector>
#define task ""
using namespace std;
using ll = long long;
using ld = long double;

const int N = 2e5 + 2;
const int Inf = 1e9 + 7;
vector<int> adj[N];
int n, dp[N][2], root;
bool vis[N];
string s;

void Read()
{
    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;
    s = " " + s;
}

void dfs(int v)
{
    dp[v][0] = dp[v][1] = s[v] - '0';
    int sum(0);
    for (auto i : adj[v])
        if (dp[i][0] == -Inf)
        {
            dfs(i);
            sum += dp[i][1];
            dp[v][0] = max(dp[v][0], dp[i][0]);
            if (s[v] == '1')
                dp[v][0] = max(dp[v][0], dp[i][1] + (s[v] - '0'));
        }
    dp[v][1] = max(dp[v][1], sum - (s[v] - '0'));
    dp[v][0] = max(dp[v][0], sum - (s[v] - '0'));
}

int GetAns(int v)
{
    fill_n(&dp[0][0], N * 2, -Inf);
    root = v;
    dfs(v);
    return dp[v][0];
}

void Solve()
{
    cout << GetAns(1);
}

int32_t main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    if (fopen(task ".INP", "r"))
    {
        freopen(task ".INP", "r", stdin);
        freopen(task ".OUT", "w", stdout);
    }
    Read();
    Solve();
}

Compilation message

power.cpp: In function 'int32_t main()':
power.cpp:67:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   67 |         freopen(task ".INP", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
power.cpp:68:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   68 |         freopen(task ".OUT", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 6784 KB Output is correct
2 Correct 5 ms 6636 KB Output is correct
3 Correct 4 ms 6636 KB Output is correct
4 Correct 5 ms 6636 KB Output is correct
5 Correct 4 ms 6636 KB Output is correct
6 Correct 5 ms 6636 KB Output is correct
7 Correct 5 ms 6636 KB Output is correct
8 Correct 5 ms 6656 KB Output is correct
9 Correct 5 ms 6636 KB Output is correct
10 Correct 4 ms 6636 KB Output is correct
11 Correct 5 ms 6636 KB Output is correct
12 Correct 5 ms 6636 KB Output is correct
13 Correct 5 ms 6636 KB Output is correct
14 Correct 5 ms 6636 KB Output is correct
15 Correct 5 ms 6636 KB Output is correct
16 Correct 5 ms 6636 KB Output is correct
17 Correct 5 ms 6636 KB Output is correct
18 Correct 5 ms 6636 KB Output is correct
19 Correct 5 ms 6636 KB Output is correct
20 Correct 5 ms 6636 KB Output is correct
21 Correct 5 ms 6636 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 6784 KB Output is correct
2 Correct 5 ms 6636 KB Output is correct
3 Correct 4 ms 6636 KB Output is correct
4 Correct 5 ms 6636 KB Output is correct
5 Correct 4 ms 6636 KB Output is correct
6 Correct 5 ms 6636 KB Output is correct
7 Correct 5 ms 6636 KB Output is correct
8 Correct 5 ms 6656 KB Output is correct
9 Correct 5 ms 6636 KB Output is correct
10 Correct 4 ms 6636 KB Output is correct
11 Correct 5 ms 6636 KB Output is correct
12 Correct 5 ms 6636 KB Output is correct
13 Correct 5 ms 6636 KB Output is correct
14 Correct 5 ms 6636 KB Output is correct
15 Correct 5 ms 6636 KB Output is correct
16 Correct 5 ms 6636 KB Output is correct
17 Correct 5 ms 6636 KB Output is correct
18 Correct 5 ms 6636 KB Output is correct
19 Correct 5 ms 6636 KB Output is correct
20 Correct 5 ms 6636 KB Output is correct
21 Correct 5 ms 6636 KB Output is correct
22 Correct 5 ms 6636 KB Output is correct
23 Correct 6 ms 6636 KB Output is correct
24 Correct 5 ms 6636 KB Output is correct
25 Correct 5 ms 6636 KB Output is correct
26 Correct 6 ms 6636 KB Output is correct
27 Correct 5 ms 6636 KB Output is correct
28 Correct 6 ms 6636 KB Output is correct
29 Correct 5 ms 6764 KB Output is correct
30 Correct 7 ms 6764 KB Output is correct
31 Correct 5 ms 6636 KB Output is correct
32 Correct 5 ms 6636 KB Output is correct
33 Correct 5 ms 6636 KB Output is correct
34 Correct 5 ms 6636 KB Output is correct
35 Correct 5 ms 6636 KB Output is correct
36 Correct 6 ms 6636 KB Output is correct
37 Correct 5 ms 6636 KB Output is correct
38 Correct 6 ms 6636 KB Output is correct
39 Correct 5 ms 6764 KB Output is correct
40 Correct 7 ms 6636 KB Output is correct
41 Correct 6 ms 6764 KB Output is correct
42 Correct 6 ms 6636 KB Output is correct
43 Correct 6 ms 6636 KB Output is correct
44 Correct 5 ms 6764 KB Output is correct
45 Correct 7 ms 6636 KB Output is correct
46 Correct 5 ms 6636 KB Output is correct
47 Correct 5 ms 6636 KB Output is correct
48 Correct 5 ms 6764 KB Output is correct
49 Correct 6 ms 6764 KB Output is correct
50 Correct 6 ms 6764 KB Output is correct
51 Correct 5 ms 6636 KB Output is correct
52 Correct 5 ms 6636 KB Output is correct
53 Correct 5 ms 6636 KB Output is correct
54 Correct 5 ms 6636 KB Output is correct
55 Correct 5 ms 6636 KB Output is correct
56 Correct 5 ms 6784 KB Output is correct
57 Correct 6 ms 6764 KB Output is correct
58 Correct 5 ms 6636 KB Output is correct
59 Correct 5 ms 6636 KB Output is correct
60 Correct 6 ms 6764 KB Output is correct
61 Correct 6 ms 6636 KB Output is correct
62 Correct 5 ms 6764 KB Output is correct
63 Correct 5 ms 6656 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 6784 KB Output is correct
2 Correct 5 ms 6636 KB Output is correct
3 Correct 4 ms 6636 KB Output is correct
4 Correct 5 ms 6636 KB Output is correct
5 Correct 4 ms 6636 KB Output is correct
6 Correct 5 ms 6636 KB Output is correct
7 Correct 5 ms 6636 KB Output is correct
8 Correct 5 ms 6656 KB Output is correct
9 Correct 5 ms 6636 KB Output is correct
10 Correct 4 ms 6636 KB Output is correct
11 Correct 5 ms 6636 KB Output is correct
12 Correct 5 ms 6636 KB Output is correct
13 Correct 5 ms 6636 KB Output is correct
14 Correct 5 ms 6636 KB Output is correct
15 Correct 5 ms 6636 KB Output is correct
16 Correct 5 ms 6636 KB Output is correct
17 Correct 5 ms 6636 KB Output is correct
18 Correct 5 ms 6636 KB Output is correct
19 Correct 5 ms 6636 KB Output is correct
20 Correct 5 ms 6636 KB Output is correct
21 Correct 5 ms 6636 KB Output is correct
22 Correct 5 ms 6636 KB Output is correct
23 Correct 6 ms 6636 KB Output is correct
24 Correct 5 ms 6636 KB Output is correct
25 Correct 5 ms 6636 KB Output is correct
26 Correct 6 ms 6636 KB Output is correct
27 Correct 5 ms 6636 KB Output is correct
28 Correct 6 ms 6636 KB Output is correct
29 Correct 5 ms 6764 KB Output is correct
30 Correct 7 ms 6764 KB Output is correct
31 Correct 5 ms 6636 KB Output is correct
32 Correct 5 ms 6636 KB Output is correct
33 Correct 5 ms 6636 KB Output is correct
34 Correct 5 ms 6636 KB Output is correct
35 Correct 5 ms 6636 KB Output is correct
36 Correct 6 ms 6636 KB Output is correct
37 Correct 5 ms 6636 KB Output is correct
38 Correct 6 ms 6636 KB Output is correct
39 Correct 5 ms 6764 KB Output is correct
40 Correct 7 ms 6636 KB Output is correct
41 Correct 6 ms 6764 KB Output is correct
42 Correct 6 ms 6636 KB Output is correct
43 Correct 6 ms 6636 KB Output is correct
44 Correct 5 ms 6764 KB Output is correct
45 Correct 7 ms 6636 KB Output is correct
46 Correct 5 ms 6636 KB Output is correct
47 Correct 5 ms 6636 KB Output is correct
48 Correct 5 ms 6764 KB Output is correct
49 Correct 6 ms 6764 KB Output is correct
50 Correct 6 ms 6764 KB Output is correct
51 Correct 5 ms 6636 KB Output is correct
52 Correct 5 ms 6636 KB Output is correct
53 Correct 5 ms 6636 KB Output is correct
54 Correct 5 ms 6636 KB Output is correct
55 Correct 5 ms 6636 KB Output is correct
56 Correct 5 ms 6784 KB Output is correct
57 Correct 6 ms 6764 KB Output is correct
58 Correct 5 ms 6636 KB Output is correct
59 Correct 5 ms 6636 KB Output is correct
60 Correct 6 ms 6764 KB Output is correct
61 Correct 6 ms 6636 KB Output is correct
62 Correct 5 ms 6764 KB Output is correct
63 Correct 5 ms 6656 KB Output is correct
64 Correct 175 ms 15980 KB Output is correct
65 Correct 161 ms 15976 KB Output is correct
66 Correct 176 ms 16088 KB Output is correct
67 Correct 165 ms 15972 KB Output is correct
68 Correct 173 ms 16216 KB Output is correct
69 Correct 174 ms 15972 KB Output is correct
70 Correct 161 ms 15988 KB Output is correct
71 Correct 170 ms 16120 KB Output is correct
72 Correct 173 ms 16100 KB Output is correct
73 Correct 193 ms 26088 KB Output is correct
74 Correct 189 ms 26088 KB Output is correct
75 Correct 162 ms 15972 KB Output is correct
76 Correct 159 ms 15852 KB Output is correct
77 Correct 159 ms 15972 KB Output is correct
78 Correct 171 ms 15976 KB Output is correct
79 Correct 168 ms 15852 KB Output is correct
80 Correct 168 ms 15976 KB Output is correct
81 Correct 139 ms 16356 KB Output is correct
82 Correct 151 ms 16164 KB Output is correct
83 Correct 172 ms 20076 KB Output is correct
84 Correct 174 ms 21888 KB Output is correct
85 Correct 173 ms 21624 KB Output is correct
86 Correct 167 ms 17128 KB Output is correct
87 Correct 171 ms 16612 KB Output is correct
88 Correct 160 ms 17188 KB Output is correct
89 Correct 156 ms 17140 KB Output is correct
90 Correct 150 ms 16968 KB Output is correct
91 Correct 147 ms 17096 KB Output is correct
92 Correct 162 ms 17492 KB Output is correct
93 Correct 157 ms 19256 KB Output is correct
94 Correct 141 ms 20708 KB Output is correct
95 Correct 144 ms 19616 KB Output is correct
96 Correct 147 ms 18168 KB Output is correct
97 Correct 156 ms 17064 KB Output is correct
98 Correct 155 ms 16536 KB Output is correct
99 Correct 171 ms 16380 KB Output is correct
100 Correct 149 ms 18900 KB Output is correct
101 Correct 154 ms 17376 KB Output is correct
102 Correct 147 ms 16696 KB Output is correct
103 Correct 159 ms 16688 KB Output is correct
104 Correct 92 ms 16864 KB Output is correct
105 Correct 173 ms 23528 KB Output is correct
106 Correct 87 ms 16736 KB Output is correct
107 Correct 89 ms 16736 KB Output is correct
108 Correct 177 ms 26768 KB Output is correct
109 Correct 94 ms 16864 KB Output is correct
110 Correct 180 ms 27032 KB Output is correct
111 Correct 152 ms 16120 KB Output is correct