oj.uz

Submission #502243

# Submission time Handle Problem Language Result Execution time Memory
502243 2022-01-05T15:18:38 Z amunduzbaev Power Plant (JOI20_power) C++14
100 / 100
 214 ms 30124 KB 
#include "bits/stdc++.h"
using namespace std;

#define ar array
//~ #define int long long

const int N = 2e5 + 5;
vector<int> edges[N];
int a[N], dp[N], res, up[N];

void dfs(int u, int p = -1){
	for(auto x : edges[u]){
		if(x == p) continue;
		dfs(x, u);
		dp[u] += dp[x];
	}
	
	dp[u] = max(dp[u] - a[u], a[u]);
}

void redfs(int u, int p = -1){
	for(auto x : edges[u]){
		if(x == p) continue;
		up[x] += up[u];
		up[u] += dp[x];
	} up[u] = max(up[u] - a[u], a[u]);
	res = max(up[u], res);
	
	up[u] = 0;
	reverse(edges[u].begin(), edges[u].end());
	for(auto x : edges[u]){
		if(x == p) continue;
		up[x] += up[u];
		up[u] += dp[x];
		up[x] = max(up[x] - a[u], a[u]);
		redfs(x, u);
	}
}

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

	int n; cin>>n;
	for(int i=1;i<n;i++){
		int a, b; cin>>a>>b;
		edges[a].push_back(b);
		edges[b].push_back(a);
	} for(int i=1;i<=n;i++){
		char c; cin>>c;
		a[i] = c - '0';
	} 
	
	for(int i=1;i<=n;i++){
		for(auto x : edges[i]){
			if(a[x] && a[i]) res = 2;
		}
	}
	dfs(1);
	redfs(1);
	cout<<res<<"\n";
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4940 KB Output is correct
2 Correct 2 ms 4940 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 2 ms 4940 KB Output is correct
6 Correct 2 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 4 ms 4940 KB Output is correct
9 Correct 2 ms 4940 KB Output is correct
10 Correct 3 ms 4940 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 3 ms 4940 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 4 ms 4940 KB Output is correct
15 Correct 2 ms 4940 KB Output is correct
16 Correct 4 ms 4940 KB Output is correct
17 Correct 4 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 2 ms 4940 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4940 KB Output is correct
2 Correct 2 ms 4940 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 2 ms 4940 KB Output is correct
6 Correct 2 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 4 ms 4940 KB Output is correct
9 Correct 2 ms 4940 KB Output is correct
10 Correct 3 ms 4940 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 3 ms 4940 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 4 ms 4940 KB Output is correct
15 Correct 2 ms 4940 KB Output is correct
16 Correct 4 ms 4940 KB Output is correct
17 Correct 4 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 2 ms 4940 KB Output is correct
22 Correct 3 ms 5068 KB Output is correct
23 Correct 3 ms 5068 KB Output is correct
24 Correct 4 ms 5068 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 3 ms 5068 KB Output is correct
27 Correct 3 ms 5068 KB Output is correct
28 Correct 4 ms 5068 KB Output is correct
29 Correct 3 ms 5196 KB Output is correct
30 Correct 4 ms 5196 KB Output is correct
31 Correct 4 ms 5068 KB Output is correct
32 Correct 4 ms 5068 KB Output is correct
33 Correct 4 ms 5068 KB Output is correct
34 Correct 3 ms 5068 KB Output is correct
35 Correct 3 ms 5068 KB Output is correct
36 Correct 3 ms 5068 KB Output is correct
37 Correct 3 ms 5068 KB Output is correct
38 Correct 4 ms 5068 KB Output is correct
39 Correct 3 ms 5068 KB Output is correct
40 Correct 3 ms 5068 KB Output is correct
41 Correct 3 ms 5068 KB Output is correct
42 Correct 4 ms 5068 KB Output is correct
43 Correct 4 ms 5068 KB Output is correct
44 Correct 4 ms 5068 KB Output is correct
45 Correct 3 ms 5068 KB Output is correct
46 Correct 6 ms 5068 KB Output is correct
47 Correct 3 ms 5068 KB Output is correct
48 Correct 4 ms 5120 KB Output is correct
49 Correct 4 ms 5068 KB Output is correct
50 Correct 5 ms 5068 KB Output is correct
51 Correct 3 ms 5024 KB Output is correct
52 Correct 3 ms 5068 KB Output is correct
53 Correct 4 ms 5068 KB Output is correct
54 Correct 4 ms 5068 KB Output is correct
55 Correct 3 ms 5068 KB Output is correct
56 Correct 3 ms 5068 KB Output is correct
57 Correct 3 ms 5196 KB Output is correct
58 Correct 4 ms 5068 KB Output is correct
59 Correct 4 ms 5116 KB Output is correct
60 Correct 3 ms 5068 KB Output is correct
61 Correct 3 ms 5068 KB Output is correct
62 Correct 3 ms 5196 KB Output is correct
63 Correct 4 ms 5068 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4940 KB Output is correct
2 Correct 2 ms 4940 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 3 ms 4940 KB Output is correct
5 Correct 2 ms 4940 KB Output is correct
6 Correct 2 ms 4940 KB Output is correct
7 Correct 3 ms 4940 KB Output is correct
8 Correct 4 ms 4940 KB Output is correct
9 Correct 2 ms 4940 KB Output is correct
10 Correct 3 ms 4940 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 3 ms 4940 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 4 ms 4940 KB Output is correct
15 Correct 2 ms 4940 KB Output is correct
16 Correct 4 ms 4940 KB Output is correct
17 Correct 4 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 2 ms 4940 KB Output is correct
22 Correct 3 ms 5068 KB Output is correct
23 Correct 3 ms 5068 KB Output is correct
24 Correct 4 ms 5068 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 3 ms 5068 KB Output is correct
27 Correct 3 ms 5068 KB Output is correct
28 Correct 4 ms 5068 KB Output is correct
29 Correct 3 ms 5196 KB Output is correct
30 Correct 4 ms 5196 KB Output is correct
31 Correct 4 ms 5068 KB Output is correct
32 Correct 4 ms 5068 KB Output is correct
33 Correct 4 ms 5068 KB Output is correct
34 Correct 3 ms 5068 KB Output is correct
35 Correct 3 ms 5068 KB Output is correct
36 Correct 3 ms 5068 KB Output is correct
37 Correct 3 ms 5068 KB Output is correct
38 Correct 4 ms 5068 KB Output is correct
39 Correct 3 ms 5068 KB Output is correct
40 Correct 3 ms 5068 KB Output is correct
41 Correct 3 ms 5068 KB Output is correct
42 Correct 4 ms 5068 KB Output is correct
43 Correct 4 ms 5068 KB Output is correct
44 Correct 4 ms 5068 KB Output is correct
45 Correct 3 ms 5068 KB Output is correct
46 Correct 6 ms 5068 KB Output is correct
47 Correct 3 ms 5068 KB Output is correct
48 Correct 4 ms 5120 KB Output is correct
49 Correct 4 ms 5068 KB Output is correct
50 Correct 5 ms 5068 KB Output is correct
51 Correct 3 ms 5024 KB Output is correct
52 Correct 3 ms 5068 KB Output is correct
53 Correct 4 ms 5068 KB Output is correct
54 Correct 4 ms 5068 KB Output is correct
55 Correct 3 ms 5068 KB Output is correct
56 Correct 3 ms 5068 KB Output is correct
57 Correct 3 ms 5196 KB Output is correct
58 Correct 4 ms 5068 KB Output is correct
59 Correct 4 ms 5116 KB Output is correct
60 Correct 3 ms 5068 KB Output is correct
61 Correct 3 ms 5068 KB Output is correct
62 Correct 3 ms 5196 KB Output is correct
63 Correct 4 ms 5068 KB Output is correct
64 Correct 170 ms 16380 KB Output is correct
65 Correct 168 ms 16424 KB Output is correct
66 Correct 207 ms 16356 KB Output is correct
67 Correct 163 ms 16548 KB Output is correct
68 Correct 160 ms 16340 KB Output is correct
69 Correct 162 ms 16348 KB Output is correct
70 Correct 138 ms 16324 KB Output is correct
71 Correct 184 ms 16424 KB Output is correct
72 Correct 209 ms 16356 KB Output is correct
73 Correct 214 ms 29020 KB Output is correct
74 Correct 192 ms 28952 KB Output is correct
75 Correct 148 ms 16320 KB Output is correct
76 Correct 151 ms 16232 KB Output is correct
77 Correct 164 ms 16320 KB Output is correct
78 Correct 161 ms 16364 KB Output is correct
79 Correct 151 ms 16280 KB Output is correct
80 Correct 146 ms 16316 KB Output is correct
81 Correct 135 ms 16580 KB Output is correct
82 Correct 133 ms 16440 KB Output is correct
83 Correct 170 ms 21496 KB Output is correct
84 Correct 171 ms 23664 KB Output is correct
85 Correct 167 ms 23240 KB Output is correct
86 Correct 147 ms 17696 KB Output is correct
87 Correct 147 ms 17220 KB Output is correct
88 Correct 133 ms 17568 KB Output is correct
89 Correct 132 ms 17564 KB Output is correct
90 Correct 138 ms 17476 KB Output is correct
91 Correct 153 ms 17632 KB Output is correct
92 Correct 154 ms 17908 KB Output is correct
93 Correct 132 ms 20388 KB Output is correct
94 Correct 151 ms 21944 KB Output is correct
95 Correct 130 ms 20804 KB Output is correct
96 Correct 129 ms 18920 KB Output is correct
97 Correct 143 ms 17796 KB Output is correct
98 Correct 126 ms 16964 KB Output is correct
99 Correct 126 ms 16708 KB Output is correct
100 Correct 138 ms 20024 KB Output is correct
101 Correct 129 ms 17932 KB Output is correct
102 Correct 130 ms 17092 KB Output is correct
103 Correct 135 ms 16940 KB Output is correct
104 Correct 87 ms 17188 KB Output is correct
105 Correct 168 ms 25796 KB Output is correct
106 Correct 76 ms 16984 KB Output is correct
107 Correct 77 ms 17044 KB Output is correct
108 Correct 155 ms 29796 KB Output is correct
109 Correct 84 ms 17132 KB Output is correct
110 Correct 165 ms 30124 KB Output is correct
111 Correct 112 ms 16292 KB Output is correct