oj.uz

Submission #293677

# Submission time Handle Problem Language Result Execution time Memory
293677 2020-09-08T09:38:16 Z AlexLuchianov Power Plant (JOI20_power) C++14
100 / 100
 245 ms 23416 KB 
#include <iostream>
#include <vector>
#include <cassert>
#include <cmath>
#include <algorithm>

using ll = long long;
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
#define MAX(a, b) (((a) < (b)) ? (b) : (a))

int const nmax = 200000;
std::vector<int> g[1 + nmax];
char active[1 + nmax];
int dp[1 + nmax];

void dfs(int node, int parent) {
  for(int h = 0; h < g[node].size(); h++) {
    int to = g[node][h];
    if(to == parent)
      g[node].erase(g[node].begin() + h);
  }

  dp[node] = -(active[node] - '0');

  for(int h = 0; h < g[node].size(); h++) {
    int to = g[node][h];
    dfs(to, node);
    dp[node] += dp[to];
  }
  dp[node] = std::max(dp[node], active[node] - '0');
}

int solve(int node) {
  int result = dp[node];
  for(int h = 0; h < g[node].size(); h++) {
    int to = g[node][h];
    result = std::max(result, solve(to));
    result = std::max(result, dp[to] + active[node] - '0');
  }
  return result;
}

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

  int n;
  std::cin >> n;
  for(int i = 1; i < n; i++) {
    int a, b;
    std::cin >> a >> b;
    g[a].push_back(b);
    g[b].push_back(a);
  }
  std::cin >> (active + 1);
  dfs(1, 0);
  std::cout << solve(1);

  return 0;
}

Compilation message

power.cpp: In function 'void dfs(int, int)':
power.cpp:17:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |   for(int h = 0; h < g[node].size(); h++) {
      |                  ~~^~~~~~~~~~~~~~~~
power.cpp:25:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   25 |   for(int h = 0; h < g[node].size(); h++) {
      |                  ~~^~~~~~~~~~~~~~~~
power.cpp: In function 'int solve(int)':
power.cpp:35:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |   for(int h = 0; h < g[node].size(); h++) {
      |                  ~~^~~~~~~~~~~~~~~~

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 5120 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 3 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 4 ms 5120 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 3 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 3 ms 4992 KB Output is correct
20 Correct 4 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 5120 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 3 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 4 ms 5120 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 3 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 3 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct
23 Correct 4 ms 5120 KB Output is correct
24 Correct 4 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 4 ms 5120 KB Output is correct
28 Correct 5 ms 5120 KB Output is correct
29 Correct 4 ms 5248 KB Output is correct
30 Correct 4 ms 5120 KB Output is correct
31 Correct 6 ms 5120 KB Output is correct
32 Correct 4 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 4 ms 5248 KB Output is correct
35 Correct 4 ms 5120 KB Output is correct
36 Correct 4 ms 5120 KB Output is correct
37 Correct 4 ms 5120 KB Output is correct
38 Correct 4 ms 5120 KB Output is correct
39 Correct 4 ms 5120 KB Output is correct
40 Correct 4 ms 5120 KB Output is correct
41 Correct 5 ms 5120 KB Output is correct
42 Correct 4 ms 5120 KB Output is correct
43 Correct 4 ms 5120 KB Output is correct
44 Correct 5 ms 5120 KB Output is correct
45 Correct 5 ms 5120 KB Output is correct
46 Correct 5 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 4 ms 5120 KB Output is correct
49 Correct 4 ms 5120 KB Output is correct
50 Correct 4 ms 5120 KB Output is correct
51 Correct 4 ms 5120 KB Output is correct
52 Correct 4 ms 5120 KB Output is correct
53 Correct 4 ms 5120 KB Output is correct
54 Correct 4 ms 5120 KB Output is correct
55 Correct 4 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 4 ms 5120 KB Output is correct
59 Correct 4 ms 5120 KB Output is correct
60 Correct 4 ms 5120 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 5120 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 5120 KB Output is correct
9 Correct 3 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 4 ms 5120 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 3 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 3 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct
23 Correct 4 ms 5120 KB Output is correct
24 Correct 4 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 4 ms 5120 KB Output is correct
28 Correct 5 ms 5120 KB Output is correct
29 Correct 4 ms 5248 KB Output is correct
30 Correct 4 ms 5120 KB Output is correct
31 Correct 6 ms 5120 KB Output is correct
32 Correct 4 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 4 ms 5248 KB Output is correct
35 Correct 4 ms 5120 KB Output is correct
36 Correct 4 ms 5120 KB Output is correct
37 Correct 4 ms 5120 KB Output is correct
38 Correct 4 ms 5120 KB Output is correct
39 Correct 4 ms 5120 KB Output is correct
40 Correct 4 ms 5120 KB Output is correct
41 Correct 5 ms 5120 KB Output is correct
42 Correct 4 ms 5120 KB Output is correct
43 Correct 4 ms 5120 KB Output is correct
44 Correct 5 ms 5120 KB Output is correct
45 Correct 5 ms 5120 KB Output is correct
46 Correct 5 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 4 ms 5120 KB Output is correct
49 Correct 4 ms 5120 KB Output is correct
50 Correct 4 ms 5120 KB Output is correct
51 Correct 4 ms 5120 KB Output is correct
52 Correct 4 ms 5120 KB Output is correct
53 Correct 4 ms 5120 KB Output is correct
54 Correct 4 ms 5120 KB Output is correct
55 Correct 4 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 4 ms 5120 KB Output is correct
59 Correct 4 ms 5120 KB Output is correct
60 Correct 4 ms 5120 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 199 ms 12408 KB Output is correct
65 Correct 199 ms 12408 KB Output is correct
66 Correct 194 ms 12408 KB Output is correct
67 Correct 219 ms 12408 KB Output is correct
68 Correct 192 ms 12392 KB Output is correct
69 Correct 202 ms 12472 KB Output is correct
70 Correct 199 ms 12536 KB Output is correct
71 Correct 193 ms 12408 KB Output is correct
72 Correct 201 ms 12408 KB Output is correct
73 Correct 234 ms 22524 KB Output is correct
74 Correct 226 ms 22392 KB Output is correct
75 Correct 185 ms 12248 KB Output is correct
76 Correct 192 ms 12408 KB Output is correct
77 Correct 202 ms 12280 KB Output is correct
78 Correct 201 ms 12280 KB Output is correct
79 Correct 207 ms 12408 KB Output is correct
80 Correct 196 ms 12280 KB Output is correct
81 Correct 159 ms 12660 KB Output is correct
82 Correct 182 ms 12532 KB Output is correct
83 Correct 223 ms 16504 KB Output is correct
84 Correct 238 ms 18168 KB Output is correct
85 Correct 245 ms 17912 KB Output is correct
86 Correct 201 ms 13508 KB Output is correct
87 Correct 219 ms 12920 KB Output is correct
88 Correct 194 ms 13432 KB Output is correct
89 Correct 186 ms 13432 KB Output is correct
90 Correct 182 ms 13304 KB Output is correct
91 Correct 204 ms 13564 KB Output is correct
92 Correct 174 ms 13756 KB Output is correct
93 Correct 196 ms 15680 KB Output is correct
94 Correct 174 ms 17008 KB Output is correct
95 Correct 183 ms 15988 KB Output is correct
96 Correct 175 ms 14456 KB Output is correct
97 Correct 167 ms 13304 KB Output is correct
98 Correct 168 ms 12924 KB Output is correct
99 Correct 196 ms 12664 KB Output is correct
100 Correct 187 ms 15224 KB Output is correct
101 Correct 196 ms 13776 KB Output is correct
102 Correct 172 ms 13048 KB Output is correct
103 Correct 186 ms 12920 KB Output is correct
104 Correct 106 ms 13036 KB Output is correct
105 Correct 225 ms 19832 KB Output is correct
106 Correct 104 ms 13036 KB Output is correct
107 Correct 104 ms 13084 KB Output is correct
108 Correct 229 ms 22996 KB Output is correct
109 Correct 101 ms 13032 KB Output is correct
110 Correct 228 ms 23416 KB Output is correct
111 Correct 174 ms 12280 KB Output is correct