oj.uz

답안 #536357

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
536357 2022-03-13T03:45:52 Z Monarchuwu Power Plant (JOI20_power) C++17
100 / 100
 177 ms 34808 KB 
#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
typedef long long ll;

const int N = 2e5 + 8;
int n, a[N];
char s[N];
vector<int> g[N];

void upd(int &a, int b) { if (a < b) a = b; }
int dp[N], cnt[N][3], tmp[4];
int ans;
void dfs(int u, int p) {
    for (int v : g[u]) if (v != p) {
        dfs(v, u);

        if (u == 2) {
            int bug = 1;
        }

        fill(tmp, tmp + 4, 0);
        for (int i = 0; i < 3; ++i)
            upd(tmp[i + 1], cnt[u][i] + dp[v]);

        upd(cnt[u][1], tmp[1]);
        upd(cnt[u][2], tmp[2]);
        upd(cnt[u][2], tmp[3]);
    }

    dp[u] = max({ a[u], cnt[u][1] - a[u], cnt[u][2] - a[u] });
    ans = max({ ans, cnt[u][1] + a[u], cnt[u][2] - a[u] });
}

int main() {
    cin.tie(NULL)->sync_with_stdio(false);
    cin >> n;
    for (int i = 1, u, v; i < n; ++i) {
        cin >> u >> v;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    cin >> (s + 1);
    for (int i = 1; i <= n; ++i) a[i] = s[i] ^ 48;

    dfs(1, 0);
    cout << ans << '\n';
}
/**  /\_/\
 *  (= ._.)
 *  / >0  \>1
**/

Compilation message

power.cpp: In function 'void dfs(int, int)':
power.cpp:20:17: warning: unused variable 'bug' [-Wunused-variable]
   20 |             int bug = 1;
      |                 ^~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4952 KB Output is correct
4 Correct 4 ms 5040 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 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5040 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 5044 KB Output is correct
13 Correct 4 ms 5040 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5036 KB Output is correct
17 Correct 3 ms 4948 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

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4952 KB Output is correct
4 Correct 4 ms 5040 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 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5040 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 5044 KB Output is correct
13 Correct 4 ms 5040 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5036 KB Output is correct
17 Correct 3 ms 4948 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 4 ms 5096 KB Output is correct
23 Correct 3 ms 5076 KB Output is correct
24 Correct 3 ms 5076 KB Output is correct
25 Correct 3 ms 5076 KB Output is correct
26 Correct 5 ms 5100 KB Output is correct
27 Correct 4 ms 5180 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 4 ms 5248 KB Output is correct
30 Correct 4 ms 5204 KB Output is correct
31 Correct 3 ms 5096 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 4 ms 5076 KB Output is correct
36 Correct 4 ms 5076 KB Output is correct
37 Correct 4 ms 5076 KB Output is correct
38 Correct 4 ms 5176 KB Output is correct
39 Correct 4 ms 5204 KB Output is correct
40 Correct 4 ms 5204 KB Output is correct
41 Correct 4 ms 5180 KB Output is correct
42 Correct 4 ms 5176 KB Output is correct
43 Correct 4 ms 5100 KB Output is correct
44 Correct 4 ms 5204 KB Output is correct
45 Correct 3 ms 5204 KB Output is correct
46 Correct 5 ms 5076 KB Output is correct
47 Correct 4 ms 5204 KB Output is correct
48 Correct 3 ms 5232 KB Output is correct
49 Correct 4 ms 5204 KB Output is correct
50 Correct 4 ms 5176 KB Output is correct
51 Correct 4 ms 5204 KB Output is correct
52 Correct 3 ms 5076 KB Output is correct
53 Correct 4 ms 5176 KB Output is correct
54 Correct 3 ms 5204 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 5308 KB Output is correct
58 Correct 3 ms 5052 KB Output is correct
59 Correct 4 ms 5076 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 5204 KB Output is correct
63 Correct 4 ms 5180 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 4 ms 4952 KB Output is correct
4 Correct 4 ms 5040 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 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 3 ms 5040 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 3 ms 5044 KB Output is correct
13 Correct 4 ms 5040 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5036 KB Output is correct
17 Correct 3 ms 4948 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 4 ms 5096 KB Output is correct
23 Correct 3 ms 5076 KB Output is correct
24 Correct 3 ms 5076 KB Output is correct
25 Correct 3 ms 5076 KB Output is correct
26 Correct 5 ms 5100 KB Output is correct
27 Correct 4 ms 5180 KB Output is correct
28 Correct 4 ms 5076 KB Output is correct
29 Correct 4 ms 5248 KB Output is correct
30 Correct 4 ms 5204 KB Output is correct
31 Correct 3 ms 5096 KB Output is correct
32 Correct 4 ms 5076 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 4 ms 5076 KB Output is correct
36 Correct 4 ms 5076 KB Output is correct
37 Correct 4 ms 5076 KB Output is correct
38 Correct 4 ms 5176 KB Output is correct
39 Correct 4 ms 5204 KB Output is correct
40 Correct 4 ms 5204 KB Output is correct
41 Correct 4 ms 5180 KB Output is correct
42 Correct 4 ms 5176 KB Output is correct
43 Correct 4 ms 5100 KB Output is correct
44 Correct 4 ms 5204 KB Output is correct
45 Correct 3 ms 5204 KB Output is correct
46 Correct 5 ms 5076 KB Output is correct
47 Correct 4 ms 5204 KB Output is correct
48 Correct 3 ms 5232 KB Output is correct
49 Correct 4 ms 5204 KB Output is correct
50 Correct 4 ms 5176 KB Output is correct
51 Correct 4 ms 5204 KB Output is correct
52 Correct 3 ms 5076 KB Output is correct
53 Correct 4 ms 5176 KB Output is correct
54 Correct 3 ms 5204 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 5308 KB Output is correct
58 Correct 3 ms 5052 KB Output is correct
59 Correct 4 ms 5076 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 5204 KB Output is correct
63 Correct 4 ms 5180 KB Output is correct
64 Correct 150 ms 18220 KB Output is correct
65 Correct 147 ms 18324 KB Output is correct
66 Correct 170 ms 18220 KB Output is correct
67 Correct 146 ms 18216 KB Output is correct
68 Correct 129 ms 18212 KB Output is correct
69 Correct 142 ms 18228 KB Output is correct
70 Correct 163 ms 18252 KB Output is correct
71 Correct 134 ms 18212 KB Output is correct
72 Correct 156 ms 16468 KB Output is correct
73 Correct 176 ms 33256 KB Output is correct
74 Correct 166 ms 33228 KB Output is correct
75 Correct 172 ms 17992 KB Output is correct
76 Correct 136 ms 17988 KB Output is correct
77 Correct 136 ms 18104 KB Output is correct
78 Correct 158 ms 17996 KB Output is correct
79 Correct 141 ms 18032 KB Output is correct
80 Correct 156 ms 17992 KB Output is correct
81 Correct 134 ms 18344 KB Output is correct
82 Correct 133 ms 18248 KB Output is correct
83 Correct 162 ms 24312 KB Output is correct
84 Correct 177 ms 26920 KB Output is correct
85 Correct 155 ms 26408 KB Output is correct
86 Correct 164 ms 19788 KB Output is correct
87 Correct 152 ms 19008 KB Output is correct
88 Correct 152 ms 19532 KB Output is correct
89 Correct 139 ms 19716 KB Output is correct
90 Correct 157 ms 19336 KB Output is correct
91 Correct 162 ms 19552 KB Output is correct
92 Correct 146 ms 20052 KB Output is correct
93 Correct 149 ms 22832 KB Output is correct
94 Correct 116 ms 24888 KB Output is correct
95 Correct 153 ms 23412 KB Output is correct
96 Correct 174 ms 21164 KB Output is correct
97 Correct 141 ms 19460 KB Output is correct
98 Correct 140 ms 18760 KB Output is correct
99 Correct 150 ms 18508 KB Output is correct
100 Correct 144 ms 22472 KB Output is correct
101 Correct 156 ms 19884 KB Output is correct
102 Correct 156 ms 19032 KB Output is correct
103 Correct 141 ms 18764 KB Output is correct
104 Correct 73 ms 16576 KB Output is correct
105 Correct 167 ms 29540 KB Output is correct
106 Correct 74 ms 16448 KB Output is correct
107 Correct 91 ms 16448 KB Output is correct
108 Correct 156 ms 34368 KB Output is correct
109 Correct 103 ms 16576 KB Output is correct
110 Correct 172 ms 34808 KB Output is correct
111 Correct 132 ms 17996 KB Output is correct