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Submission #329282

# Submission time Handle Problem Language Result Execution time Memory
329282 2020-11-20T06:46:54 Z terencehill Power Plant (JOI20_power) C++14
100 / 100
 202 ms 31660 KB 
#include <iostream>
#include <vector>
#include <string>

using namespace std;

int n, ans = 0;
string s;
vector<vector<int>> adj;
vector<int> dp;

void bfs(int node, int parent) {
	int mx = 0, sum = 0, val = s[node] - '0';
	for(int i : adj[node]) {
		if(i == parent) continue;
		bfs(i, node);
		
		mx = max(mx, dp[i]);
		sum += dp[i];
	}
	
	ans = max(ans, mx + val);
	ans = max(ans, sum - val);
	
	dp[node] = max(dp[node], mx - val);
	dp[node] = max(dp[node], sum - val);
	dp[node] = max(dp[node], val);
	
	ans = max(ans, dp[node]);
} 

void solve() {
	cin >> n;
	
	dp.resize(n, 0); adj.resize(n);
	for(int i = 0; i < n - 1; i++) {
		int a, b;
		cin >> a >> b;
		a--; b--;
		
		adj[a].push_back(b);
		adj[b].push_back(a);
	}
	
	cin >> s;
	
	bfs(0, -1);
	
	cout << ans << endl;
}

int main() {
	ios_base::sync_with_stdio(false);
	solve();
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 492 KB Output is correct
23 Correct 1 ms 492 KB Output is correct
24 Correct 1 ms 492 KB Output is correct
25 Correct 1 ms 492 KB Output is correct
26 Correct 2 ms 492 KB Output is correct
27 Correct 2 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 1 ms 620 KB Output is correct
30 Correct 1 ms 620 KB Output is correct
31 Correct 1 ms 492 KB Output is correct
32 Correct 1 ms 492 KB Output is correct
33 Correct 2 ms 492 KB Output is correct
34 Correct 1 ms 512 KB Output is correct
35 Correct 1 ms 504 KB Output is correct
36 Correct 1 ms 492 KB Output is correct
37 Correct 1 ms 492 KB Output is correct
38 Correct 1 ms 492 KB Output is correct
39 Correct 1 ms 492 KB Output is correct
40 Correct 1 ms 492 KB Output is correct
41 Correct 1 ms 492 KB Output is correct
42 Correct 1 ms 492 KB Output is correct
43 Correct 1 ms 492 KB Output is correct
44 Correct 1 ms 492 KB Output is correct
45 Correct 1 ms 492 KB Output is correct
46 Correct 1 ms 492 KB Output is correct
47 Correct 1 ms 492 KB Output is correct
48 Correct 1 ms 620 KB Output is correct
49 Correct 1 ms 620 KB Output is correct
50 Correct 1 ms 492 KB Output is correct
51 Correct 1 ms 492 KB Output is correct
52 Correct 1 ms 492 KB Output is correct
53 Correct 1 ms 492 KB Output is correct
54 Correct 1 ms 492 KB Output is correct
55 Correct 1 ms 492 KB Output is correct
56 Correct 1 ms 492 KB Output is correct
57 Correct 1 ms 620 KB Output is correct
58 Correct 1 ms 492 KB Output is correct
59 Correct 1 ms 492 KB Output is correct
60 Correct 1 ms 620 KB Output is correct
61 Correct 1 ms 492 KB Output is correct
62 Correct 1 ms 620 KB Output is correct
63 Correct 1 ms 492 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 1 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 1 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 492 KB Output is correct
23 Correct 1 ms 492 KB Output is correct
24 Correct 1 ms 492 KB Output is correct
25 Correct 1 ms 492 KB Output is correct
26 Correct 2 ms 492 KB Output is correct
27 Correct 2 ms 492 KB Output is correct
28 Correct 1 ms 492 KB Output is correct
29 Correct 1 ms 620 KB Output is correct
30 Correct 1 ms 620 KB Output is correct
31 Correct 1 ms 492 KB Output is correct
32 Correct 1 ms 492 KB Output is correct
33 Correct 2 ms 492 KB Output is correct
34 Correct 1 ms 512 KB Output is correct
35 Correct 1 ms 504 KB Output is correct
36 Correct 1 ms 492 KB Output is correct
37 Correct 1 ms 492 KB Output is correct
38 Correct 1 ms 492 KB Output is correct
39 Correct 1 ms 492 KB Output is correct
40 Correct 1 ms 492 KB Output is correct
41 Correct 1 ms 492 KB Output is correct
42 Correct 1 ms 492 KB Output is correct
43 Correct 1 ms 492 KB Output is correct
44 Correct 1 ms 492 KB Output is correct
45 Correct 1 ms 492 KB Output is correct
46 Correct 1 ms 492 KB Output is correct
47 Correct 1 ms 492 KB Output is correct
48 Correct 1 ms 620 KB Output is correct
49 Correct 1 ms 620 KB Output is correct
50 Correct 1 ms 492 KB Output is correct
51 Correct 1 ms 492 KB Output is correct
52 Correct 1 ms 492 KB Output is correct
53 Correct 1 ms 492 KB Output is correct
54 Correct 1 ms 492 KB Output is correct
55 Correct 1 ms 492 KB Output is correct
56 Correct 1 ms 492 KB Output is correct
57 Correct 1 ms 620 KB Output is correct
58 Correct 1 ms 492 KB Output is correct
59 Correct 1 ms 492 KB Output is correct
60 Correct 1 ms 620 KB Output is correct
61 Correct 1 ms 492 KB Output is correct
62 Correct 1 ms 620 KB Output is correct
63 Correct 1 ms 492 KB Output is correct
64 Correct 175 ms 15316 KB Output is correct
65 Correct 174 ms 15440 KB Output is correct
66 Correct 173 ms 15448 KB Output is correct
67 Correct 175 ms 15440 KB Output is correct
68 Correct 174 ms 15428 KB Output is correct
69 Correct 174 ms 15308 KB Output is correct
70 Correct 174 ms 15320 KB Output is correct
71 Correct 176 ms 15332 KB Output is correct
72 Correct 180 ms 15308 KB Output is correct
73 Correct 195 ms 30380 KB Output is correct
74 Correct 200 ms 30380 KB Output is correct
75 Correct 170 ms 15308 KB Output is correct
76 Correct 170 ms 15316 KB Output is correct
77 Correct 186 ms 15284 KB Output is correct
78 Correct 175 ms 15308 KB Output is correct
79 Correct 180 ms 15316 KB Output is correct
80 Correct 181 ms 15308 KB Output is correct
81 Correct 155 ms 15588 KB Output is correct
82 Correct 157 ms 15464 KB Output is correct
83 Correct 202 ms 21424 KB Output is correct
84 Correct 185 ms 23992 KB Output is correct
85 Correct 186 ms 23608 KB Output is correct
86 Correct 175 ms 16940 KB Output is correct
87 Correct 175 ms 16168 KB Output is correct
88 Correct 160 ms 16616 KB Output is correct
89 Correct 167 ms 16568 KB Output is correct
90 Correct 163 ms 16652 KB Output is correct
91 Correct 161 ms 16656 KB Output is correct
92 Correct 166 ms 17048 KB Output is correct
93 Correct 149 ms 20092 KB Output is correct
94 Correct 160 ms 22116 KB Output is correct
95 Correct 152 ms 20452 KB Output is correct
96 Correct 155 ms 18328 KB Output is correct
97 Correct 163 ms 16516 KB Output is correct
98 Correct 154 ms 15848 KB Output is correct
99 Correct 171 ms 15820 KB Output is correct
100 Correct 163 ms 19352 KB Output is correct
101 Correct 163 ms 17064 KB Output is correct
102 Correct 154 ms 16124 KB Output is correct
103 Correct 167 ms 15840 KB Output is correct
104 Correct 119 ms 16356 KB Output is correct
105 Correct 188 ms 26540 KB Output is correct
106 Correct 113 ms 15968 KB Output is correct
107 Correct 122 ms 16096 KB Output is correct
108 Correct 201 ms 31296 KB Output is correct
109 Correct 116 ms 16188 KB Output is correct
110 Correct 200 ms 31660 KB Output is correct
111 Correct 167 ms 15316 KB Output is correct