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Submission #295042

# Submission time Handle Problem Language Result Execution time Memory
295042 2020-09-09T12:48:33 Z Poimidorka Power Plant (JOI20_power) C++14
100 / 100
 210 ms 27704 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <set>
#include <map>
#include <unordered_map>
#include <unordered_set>


using namespace std;


#define x first
#define y second

const int maxn = 2e5 + 1;


int dp[maxn][3];
vector<vector<int>> g;
string s;


void dfs(int v, int p) {
	for (int u : g[v])
		if (u != p)
			dfs(u, v);
	dp[v][0] = 0;
	if (s[v] == '1')
		dp[v][1] = 1;
	int sm = 0;
	for (int u : g[v]) {
		if (u != p) {
			if (s[v] == '1')
				dp[v][2] = max(dp[v][2], dp[u][1] + 1);
			dp[v][2] = max(dp[v][2], dp[u][2] - (s[v] == '1'));
			sm += max(dp[u][1], 0);
		}
	}
	dp[v][1] = max(dp[v][1], sm - (s[v] == '1'));
}

signed main() {
	ios::sync_with_stdio(false);
	cin.tie(0);
	int n;
	cin >> n;
	g.resize(n);
	for (int i = 0; i < n; i++)
		dp[i][0] = dp[i][1] = dp[i][2] = -1e9;
	for (int i = 0; i < n - 1; i++) {
		int u, v;
		cin >> u >> v;
		u--;
		v--;
		g[u].push_back(v);
		g[v].push_back(u);
	}
	cin >> s;
	dfs(0, -1);
	int ans = 0;
	for (int i = 0; i < n; i++) {
		ans = max(ans, dp[i][1]);
		ans = max(ans, dp[i][2]);
	}
	cout << ans;
	return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 404 KB Output is correct
20 Correct 0 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 404 KB Output is correct
20 Correct 0 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 512 KB Output is correct
23 Correct 1 ms 512 KB Output is correct
24 Correct 1 ms 512 KB Output is correct
25 Correct 2 ms 512 KB Output is correct
26 Correct 1 ms 512 KB Output is correct
27 Correct 1 ms 512 KB Output is correct
28 Correct 1 ms 512 KB Output is correct
29 Correct 1 ms 640 KB Output is correct
30 Correct 2 ms 512 KB Output is correct
31 Correct 1 ms 512 KB Output is correct
32 Correct 1 ms 512 KB Output is correct
33 Correct 1 ms 512 KB Output is correct
34 Correct 2 ms 512 KB Output is correct
35 Correct 1 ms 512 KB Output is correct
36 Correct 1 ms 544 KB Output is correct
37 Correct 1 ms 512 KB Output is correct
38 Correct 1 ms 512 KB Output is correct
39 Correct 1 ms 512 KB Output is correct
40 Correct 1 ms 512 KB Output is correct
41 Correct 1 ms 512 KB Output is correct
42 Correct 1 ms 512 KB Output is correct
43 Correct 1 ms 512 KB Output is correct
44 Correct 1 ms 512 KB Output is correct
45 Correct 1 ms 512 KB Output is correct
46 Correct 1 ms 512 KB Output is correct
47 Correct 1 ms 512 KB Output is correct
48 Correct 1 ms 512 KB Output is correct
49 Correct 1 ms 512 KB Output is correct
50 Correct 1 ms 512 KB Output is correct
51 Correct 1 ms 512 KB Output is correct
52 Correct 1 ms 512 KB Output is correct
53 Correct 1 ms 512 KB Output is correct
54 Correct 1 ms 512 KB Output is correct
55 Correct 1 ms 512 KB Output is correct
56 Correct 1 ms 512 KB Output is correct
57 Correct 1 ms 640 KB Output is correct
58 Correct 1 ms 512 KB Output is correct
59 Correct 1 ms 512 KB Output is correct
60 Correct 2 ms 512 KB Output is correct
61 Correct 1 ms 512 KB Output is correct
62 Correct 1 ms 640 KB Output is correct
63 Correct 1 ms 512 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 0 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 384 KB Output is correct
13 Correct 1 ms 384 KB Output is correct
14 Correct 1 ms 384 KB Output is correct
15 Correct 1 ms 384 KB Output is correct
16 Correct 1 ms 384 KB Output is correct
17 Correct 1 ms 384 KB Output is correct
18 Correct 1 ms 384 KB Output is correct
19 Correct 1 ms 404 KB Output is correct
20 Correct 0 ms 384 KB Output is correct
21 Correct 1 ms 384 KB Output is correct
22 Correct 1 ms 512 KB Output is correct
23 Correct 1 ms 512 KB Output is correct
24 Correct 1 ms 512 KB Output is correct
25 Correct 2 ms 512 KB Output is correct
26 Correct 1 ms 512 KB Output is correct
27 Correct 1 ms 512 KB Output is correct
28 Correct 1 ms 512 KB Output is correct
29 Correct 1 ms 640 KB Output is correct
30 Correct 2 ms 512 KB Output is correct
31 Correct 1 ms 512 KB Output is correct
32 Correct 1 ms 512 KB Output is correct
33 Correct 1 ms 512 KB Output is correct
34 Correct 2 ms 512 KB Output is correct
35 Correct 1 ms 512 KB Output is correct
36 Correct 1 ms 544 KB Output is correct
37 Correct 1 ms 512 KB Output is correct
38 Correct 1 ms 512 KB Output is correct
39 Correct 1 ms 512 KB Output is correct
40 Correct 1 ms 512 KB Output is correct
41 Correct 1 ms 512 KB Output is correct
42 Correct 1 ms 512 KB Output is correct
43 Correct 1 ms 512 KB Output is correct
44 Correct 1 ms 512 KB Output is correct
45 Correct 1 ms 512 KB Output is correct
46 Correct 1 ms 512 KB Output is correct
47 Correct 1 ms 512 KB Output is correct
48 Correct 1 ms 512 KB Output is correct
49 Correct 1 ms 512 KB Output is correct
50 Correct 1 ms 512 KB Output is correct
51 Correct 1 ms 512 KB Output is correct
52 Correct 1 ms 512 KB Output is correct
53 Correct 1 ms 512 KB Output is correct
54 Correct 1 ms 512 KB Output is correct
55 Correct 1 ms 512 KB Output is correct
56 Correct 1 ms 512 KB Output is correct
57 Correct 1 ms 640 KB Output is correct
58 Correct 1 ms 512 KB Output is correct
59 Correct 1 ms 512 KB Output is correct
60 Correct 2 ms 512 KB Output is correct
61 Correct 1 ms 512 KB Output is correct
62 Correct 1 ms 640 KB Output is correct
63 Correct 1 ms 512 KB Output is correct
64 Correct 174 ms 16864 KB Output is correct
65 Correct 188 ms 16988 KB Output is correct
66 Correct 175 ms 16976 KB Output is correct
67 Correct 178 ms 16860 KB Output is correct
68 Correct 182 ms 17108 KB Output is correct
69 Correct 175 ms 16856 KB Output is correct
70 Correct 175 ms 16992 KB Output is correct
71 Correct 179 ms 16864 KB Output is correct
72 Correct 173 ms 16856 KB Output is correct
73 Correct 202 ms 26808 KB Output is correct
74 Correct 210 ms 26812 KB Output is correct
75 Correct 174 ms 16860 KB Output is correct
76 Correct 173 ms 16868 KB Output is correct
77 Correct 191 ms 16856 KB Output is correct
78 Correct 182 ms 16860 KB Output is correct
79 Correct 187 ms 16868 KB Output is correct
80 Correct 187 ms 16988 KB Output is correct
81 Correct 145 ms 17140 KB Output is correct
82 Correct 163 ms 17012 KB Output is correct
83 Correct 191 ms 20796 KB Output is correct
84 Correct 193 ms 22600 KB Output is correct
85 Correct 192 ms 22340 KB Output is correct
86 Correct 193 ms 18116 KB Output is correct
87 Correct 182 ms 17460 KB Output is correct
88 Correct 167 ms 17908 KB Output is correct
89 Correct 174 ms 17900 KB Output is correct
90 Correct 166 ms 17692 KB Output is correct
91 Correct 173 ms 17980 KB Output is correct
92 Correct 173 ms 18216 KB Output is correct
93 Correct 155 ms 19976 KB Output is correct
94 Correct 166 ms 21360 KB Output is correct
95 Correct 154 ms 20336 KB Output is correct
96 Correct 167 ms 18980 KB Output is correct
97 Correct 161 ms 17688 KB Output is correct
98 Correct 155 ms 17396 KB Output is correct
99 Correct 165 ms 17240 KB Output is correct
100 Correct 166 ms 19748 KB Output is correct
101 Correct 164 ms 18100 KB Output is correct
102 Correct 157 ms 17544 KB Output is correct
103 Correct 171 ms 17388 KB Output is correct
104 Correct 109 ms 17644 KB Output is correct
105 Correct 202 ms 24248 KB Output is correct
106 Correct 100 ms 17516 KB Output is correct
107 Correct 100 ms 17516 KB Output is correct
108 Correct 197 ms 27580 KB Output is correct
109 Correct 99 ms 17644 KB Output is correct
110 Correct 202 ms 27704 KB Output is correct
111 Correct 165 ms 16868 KB Output is correct