oj.uz

답안 #859791

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
859791 2023-10-10T16:03:16 Z mgl_diamond Power Plant (JOI20_power) C++17
100 / 100
 92 ms 29584 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ii = pair<int, int>;

#define foru(i, l, r) for(int i=(l); i<=(r); ++i)
#define ford(i, l, r) for(int i=(l); i>=(r); --i)
#define fore(x, v) for(auto &x : v)
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)x.size()

void setIO() {
  ios::sync_with_stdio(0);
  cin.tie(0); cout.tie(0);
  if (fopen("input.inp", "r")) {
    freopen("input.inp", "r", stdin);
    freopen("input.out", "w", stdout);
  }
}

const int N = 2e5+5;
int n, m, e[N];
string s;
vector<int> tree[N];

int ans, dp[N];

void dfs(int u, int p) {
  dp[u] = e[u];

  int sum = 0, ma = 0;
  fore(v, tree[u]) if (v != p) {
    dfs(v, u);
    sum += dp[v];
    ma = max(ma, dp[v]);
  }

  dp[u] = max(dp[u], sum - e[u]);
  ans = max(ans, max(sum - e[u], ma + e[u]));
}

int main() {
  setIO();

  cin >> n;
  foru(i, 2, n) {
    int u, v;
    cin >> u >> v;
    tree[u].push_back(v);
    tree[v].push_back(u);
  }
  cin >> s;
  foru(i, 1, n) e[i] = (s[i-1] == '1');

  dfs(1, 0);
  cout << ans;
}

Compilation message

power.cpp: In function 'void setIO()':
power.cpp:16:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |     freopen("input.inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
power.cpp:17:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   17 |     freopen("input.out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 5724 KB Output is correct
2 Correct 1 ms 5724 KB Output is correct
3 Correct 1 ms 5752 KB Output is correct
4 Correct 2 ms 5724 KB Output is correct
5 Correct 1 ms 5724 KB Output is correct
6 Correct 1 ms 5724 KB Output is correct
7 Correct 3 ms 5724 KB Output is correct
8 Correct 2 ms 5720 KB Output is correct
9 Correct 1 ms 5720 KB Output is correct
10 Correct 1 ms 6032 KB Output is correct
11 Correct 1 ms 5720 KB Output is correct
12 Correct 1 ms 5876 KB Output is correct
13 Correct 1 ms 5724 KB Output is correct
14 Correct 1 ms 5976 KB Output is correct
15 Correct 1 ms 5724 KB Output is correct
16 Correct 1 ms 5724 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 1 ms 5724 KB Output is correct
19 Correct 1 ms 5724 KB Output is correct
20 Correct 1 ms 5724 KB Output is correct
21 Correct 1 ms 5724 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 5724 KB Output is correct
2 Correct 1 ms 5724 KB Output is correct
3 Correct 1 ms 5752 KB Output is correct
4 Correct 2 ms 5724 KB Output is correct
5 Correct 1 ms 5724 KB Output is correct
6 Correct 1 ms 5724 KB Output is correct
7 Correct 3 ms 5724 KB Output is correct
8 Correct 2 ms 5720 KB Output is correct
9 Correct 1 ms 5720 KB Output is correct
10 Correct 1 ms 6032 KB Output is correct
11 Correct 1 ms 5720 KB Output is correct
12 Correct 1 ms 5876 KB Output is correct
13 Correct 1 ms 5724 KB Output is correct
14 Correct 1 ms 5976 KB Output is correct
15 Correct 1 ms 5724 KB Output is correct
16 Correct 1 ms 5724 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 1 ms 5724 KB Output is correct
19 Correct 1 ms 5724 KB Output is correct
20 Correct 1 ms 5724 KB Output is correct
21 Correct 1 ms 5724 KB Output is correct
22 Correct 3 ms 5720 KB Output is correct
23 Correct 2 ms 5720 KB Output is correct
24 Correct 2 ms 5720 KB Output is correct
25 Correct 3 ms 5980 KB Output is correct
26 Correct 2 ms 5724 KB Output is correct
27 Correct 2 ms 5812 KB Output is correct
28 Correct 2 ms 5724 KB Output is correct
29 Correct 2 ms 5784 KB Output is correct
30 Correct 2 ms 5724 KB Output is correct
31 Correct 2 ms 5724 KB Output is correct
32 Correct 2 ms 5724 KB Output is correct
33 Correct 2 ms 5720 KB Output is correct
34 Correct 2 ms 5724 KB Output is correct
35 Correct 2 ms 5724 KB Output is correct
36 Correct 2 ms 5724 KB Output is correct
37 Correct 2 ms 5724 KB Output is correct
38 Correct 2 ms 5724 KB Output is correct
39 Correct 2 ms 5780 KB Output is correct
40 Correct 2 ms 5980 KB Output is correct
41 Correct 2 ms 5720 KB Output is correct
42 Correct 2 ms 5780 KB Output is correct
43 Correct 2 ms 5724 KB Output is correct
44 Correct 2 ms 5724 KB Output is correct
45 Correct 2 ms 5724 KB Output is correct
46 Correct 2 ms 5788 KB Output is correct
47 Correct 2 ms 5724 KB Output is correct
48 Correct 2 ms 5824 KB Output is correct
49 Correct 2 ms 5860 KB Output is correct
50 Correct 2 ms 5724 KB Output is correct
51 Correct 2 ms 5724 KB Output is correct
52 Correct 2 ms 5724 KB Output is correct
53 Correct 2 ms 5724 KB Output is correct
54 Correct 2 ms 5724 KB Output is correct
55 Correct 2 ms 5724 KB Output is correct
56 Correct 2 ms 5724 KB Output is correct
57 Correct 3 ms 5984 KB Output is correct
58 Correct 2 ms 5720 KB Output is correct
59 Correct 2 ms 5724 KB Output is correct
60 Correct 2 ms 5724 KB Output is correct
61 Correct 2 ms 5724 KB Output is correct
62 Correct 2 ms 5788 KB Output is correct
63 Correct 2 ms 5724 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 5724 KB Output is correct
2 Correct 1 ms 5724 KB Output is correct
3 Correct 1 ms 5752 KB Output is correct
4 Correct 2 ms 5724 KB Output is correct
5 Correct 1 ms 5724 KB Output is correct
6 Correct 1 ms 5724 KB Output is correct
7 Correct 3 ms 5724 KB Output is correct
8 Correct 2 ms 5720 KB Output is correct
9 Correct 1 ms 5720 KB Output is correct
10 Correct 1 ms 6032 KB Output is correct
11 Correct 1 ms 5720 KB Output is correct
12 Correct 1 ms 5876 KB Output is correct
13 Correct 1 ms 5724 KB Output is correct
14 Correct 1 ms 5976 KB Output is correct
15 Correct 1 ms 5724 KB Output is correct
16 Correct 1 ms 5724 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 1 ms 5724 KB Output is correct
19 Correct 1 ms 5724 KB Output is correct
20 Correct 1 ms 5724 KB Output is correct
21 Correct 1 ms 5724 KB Output is correct
22 Correct 3 ms 5720 KB Output is correct
23 Correct 2 ms 5720 KB Output is correct
24 Correct 2 ms 5720 KB Output is correct
25 Correct 3 ms 5980 KB Output is correct
26 Correct 2 ms 5724 KB Output is correct
27 Correct 2 ms 5812 KB Output is correct
28 Correct 2 ms 5724 KB Output is correct
29 Correct 2 ms 5784 KB Output is correct
30 Correct 2 ms 5724 KB Output is correct
31 Correct 2 ms 5724 KB Output is correct
32 Correct 2 ms 5724 KB Output is correct
33 Correct 2 ms 5720 KB Output is correct
34 Correct 2 ms 5724 KB Output is correct
35 Correct 2 ms 5724 KB Output is correct
36 Correct 2 ms 5724 KB Output is correct
37 Correct 2 ms 5724 KB Output is correct
38 Correct 2 ms 5724 KB Output is correct
39 Correct 2 ms 5780 KB Output is correct
40 Correct 2 ms 5980 KB Output is correct
41 Correct 2 ms 5720 KB Output is correct
42 Correct 2 ms 5780 KB Output is correct
43 Correct 2 ms 5724 KB Output is correct
44 Correct 2 ms 5724 KB Output is correct
45 Correct 2 ms 5724 KB Output is correct
46 Correct 2 ms 5788 KB Output is correct
47 Correct 2 ms 5724 KB Output is correct
48 Correct 2 ms 5824 KB Output is correct
49 Correct 2 ms 5860 KB Output is correct
50 Correct 2 ms 5724 KB Output is correct
51 Correct 2 ms 5724 KB Output is correct
52 Correct 2 ms 5724 KB Output is correct
53 Correct 2 ms 5724 KB Output is correct
54 Correct 2 ms 5724 KB Output is correct
55 Correct 2 ms 5724 KB Output is correct
56 Correct 2 ms 5724 KB Output is correct
57 Correct 3 ms 5984 KB Output is correct
58 Correct 2 ms 5720 KB Output is correct
59 Correct 2 ms 5724 KB Output is correct
60 Correct 2 ms 5724 KB Output is correct
61 Correct 2 ms 5724 KB Output is correct
62 Correct 2 ms 5788 KB Output is correct
63 Correct 2 ms 5724 KB Output is correct
64 Correct 56 ms 15508 KB Output is correct
65 Correct 74 ms 16108 KB Output is correct
66 Correct 61 ms 16060 KB Output is correct
67 Correct 57 ms 16016 KB Output is correct
68 Correct 62 ms 15964 KB Output is correct
69 Correct 71 ms 16016 KB Output is correct
70 Correct 57 ms 15976 KB Output is correct
71 Correct 60 ms 16036 KB Output is correct
72 Correct 56 ms 16012 KB Output is correct
73 Correct 73 ms 28560 KB Output is correct
74 Correct 72 ms 28560 KB Output is correct
75 Correct 57 ms 16012 KB Output is correct
76 Correct 86 ms 15768 KB Output is correct
77 Correct 55 ms 15948 KB Output is correct
78 Correct 65 ms 16016 KB Output is correct
79 Correct 57 ms 15772 KB Output is correct
80 Correct 86 ms 15824 KB Output is correct
81 Correct 53 ms 16368 KB Output is correct
82 Correct 52 ms 16208 KB Output is correct
83 Correct 65 ms 21144 KB Output is correct
84 Correct 67 ms 23316 KB Output is correct
85 Correct 67 ms 22924 KB Output is correct
86 Correct 68 ms 17300 KB Output is correct
87 Correct 59 ms 16768 KB Output is correct
88 Correct 74 ms 17160 KB Output is correct
89 Correct 62 ms 17312 KB Output is correct
90 Correct 71 ms 17200 KB Output is correct
91 Correct 60 ms 17372 KB Output is correct
92 Correct 73 ms 17608 KB Output is correct
93 Correct 64 ms 20068 KB Output is correct
94 Correct 68 ms 21800 KB Output is correct
95 Correct 61 ms 20296 KB Output is correct
96 Correct 77 ms 18684 KB Output is correct
97 Correct 58 ms 16936 KB Output is correct
98 Correct 56 ms 16580 KB Output is correct
99 Correct 57 ms 16232 KB Output is correct
100 Correct 88 ms 19580 KB Output is correct
101 Correct 59 ms 17396 KB Output is correct
102 Correct 57 ms 16724 KB Output is correct
103 Correct 58 ms 16664 KB Output is correct
104 Correct 51 ms 16844 KB Output is correct
105 Correct 80 ms 25492 KB Output is correct
106 Correct 44 ms 16836 KB Output is correct
107 Correct 47 ms 16832 KB Output is correct
108 Correct 92 ms 29260 KB Output is correct
109 Correct 45 ms 16836 KB Output is correct
110 Correct 78 ms 29584 KB Output is correct
111 Correct 54 ms 15780 KB Output is correct