oj.uz

Submission #292586

# Submission time Handle Problem Language Result Execution time Memory
292586 2020-09-07T10:15:17 Z kshitij_sodani Power Plant (JOI20_power) C++14
100 / 100
 236 ms 27424 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long llo;
#define mp make_pair
#define pb push_back
#define a first 
#define b second
//#define endl '\n' 

int n;
vector<int> adj[200001];
int it[200001];
int dp[200001][2];
int ans=0;
void dfs(int no,int par=-1){


	for(auto j:adj[no]){
		if(j!=par){
			dfs(j,no);
		}
	}
	dp[no][1]=0;
	int su=0;
	if(it[no]){
		dp[no][1]=1;
		dp[no][0]=1;
		su-=1;
	}

	for(auto j:adj[no]){
		if(j!=par){
			su+=dp[j][1];
		}
	}
	dp[no][1]=max(dp[no][1],su);
	int ma=0;
	int ma2=0;
	for(auto j:adj[no]){
		if(j!=par){
			ma=max(ma,dp[j][1]);
			ma2=max(ma2,dp[j][0]);
		}
	}
	if(it[no]){
		ma+=1;
	}
	dp[no][0]=max(dp[no][0],ma);
	dp[no][0]=max(dp[no][0],ma2);

	int su2=0;
	if(it[no]){
		su2-=1;
	}
	for(auto j:adj[no]){
		if(j!=par){
			su2+=dp[j][1];
		}
	}
	dp[no][0]=max(dp[no][0],su2);
	ans=max(ans,max(dp[no][0],dp[no][1]));

}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cin>>n;
	for(int i=0;i<n-1;i++){
		int aa,bb;
		cin>>aa>>bb;
		aa--;
		bb--;
		adj[aa].pb(bb);
		adj[bb].pb(aa);
	}

	for(int i=0;i<n;i++){
		char s;
		cin>>s;
		if(s=='0'){
			it[i]=0;
		}
		else{
			it[i]=1;
		}
	}
	dfs(0);
	cout<<ans<<endl;




	return 0;
}

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 4992 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 4992 KB Output is correct
9 Correct 3 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 3 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 5060 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 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 4992 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 4992 KB Output is correct
9 Correct 3 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 3 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 5060 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 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 4 ms 5120 KB Output is correct
27 Correct 5 ms 5120 KB Output is correct
28 Correct 4 ms 5120 KB Output is correct
29 Correct 4 ms 5248 KB Output is correct
30 Correct 4 ms 5248 KB Output is correct
31 Correct 4 ms 5120 KB Output is correct
32 Correct 5 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 5 ms 5120 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 4 ms 5120 KB Output is correct
42 Correct 5 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 4 ms 5120 KB Output is correct
46 Correct 4 ms 5120 KB Output is correct
47 Correct 5 ms 5120 KB Output is correct
48 Correct 4 ms 5248 KB Output is correct
49 Correct 4 ms 5248 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 6 ms 5248 KB Output is correct
58 Correct 4 ms 5120 KB Output is correct
59 Correct 5 ms 5120 KB Output is correct
60 Correct 4 ms 5248 KB Output is correct
61 Correct 5 ms 5120 KB Output is correct
62 Correct 4 ms 5248 KB Output is correct
63 Correct 5 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 4992 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 4992 KB Output is correct
9 Correct 3 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 3 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 5060 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 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 4 ms 5120 KB Output is correct
27 Correct 5 ms 5120 KB Output is correct
28 Correct 4 ms 5120 KB Output is correct
29 Correct 4 ms 5248 KB Output is correct
30 Correct 4 ms 5248 KB Output is correct
31 Correct 4 ms 5120 KB Output is correct
32 Correct 5 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 5 ms 5120 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 4 ms 5120 KB Output is correct
42 Correct 5 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 4 ms 5120 KB Output is correct
46 Correct 4 ms 5120 KB Output is correct
47 Correct 5 ms 5120 KB Output is correct
48 Correct 4 ms 5248 KB Output is correct
49 Correct 4 ms 5248 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 6 ms 5248 KB Output is correct
58 Correct 4 ms 5120 KB Output is correct
59 Correct 5 ms 5120 KB Output is correct
60 Correct 4 ms 5248 KB Output is correct
61 Correct 5 ms 5120 KB Output is correct
62 Correct 4 ms 5248 KB Output is correct
63 Correct 5 ms 5120 KB Output is correct
64 Correct 187 ms 13688 KB Output is correct
65 Correct 187 ms 13816 KB Output is correct
66 Correct 191 ms 13816 KB Output is correct
67 Correct 180 ms 13688 KB Output is correct
68 Correct 180 ms 13816 KB Output is correct
69 Correct 180 ms 13820 KB Output is correct
70 Correct 193 ms 13820 KB Output is correct
71 Correct 186 ms 13816 KB Output is correct
72 Correct 191 ms 13688 KB Output is correct
73 Correct 226 ms 26364 KB Output is correct
74 Correct 228 ms 26364 KB Output is correct
75 Correct 189 ms 13688 KB Output is correct
76 Correct 192 ms 13688 KB Output is correct
77 Correct 205 ms 13688 KB Output is correct
78 Correct 203 ms 13688 KB Output is correct
79 Correct 207 ms 13688 KB Output is correct
80 Correct 203 ms 13688 KB Output is correct
81 Correct 179 ms 14032 KB Output is correct
82 Correct 203 ms 13808 KB Output is correct
83 Correct 214 ms 18880 KB Output is correct
84 Correct 216 ms 20984 KB Output is correct
85 Correct 233 ms 20728 KB Output is correct
86 Correct 219 ms 15096 KB Output is correct
87 Correct 208 ms 14456 KB Output is correct
88 Correct 201 ms 14972 KB Output is correct
89 Correct 200 ms 14968 KB Output is correct
90 Correct 208 ms 14712 KB Output is correct
91 Correct 192 ms 14952 KB Output is correct
92 Correct 197 ms 15352 KB Output is correct
93 Correct 195 ms 17780 KB Output is correct
94 Correct 190 ms 19440 KB Output is correct
95 Correct 192 ms 18080 KB Output is correct
96 Correct 211 ms 16288 KB Output is correct
97 Correct 189 ms 14792 KB Output is correct
98 Correct 182 ms 14328 KB Output is correct
99 Correct 193 ms 14200 KB Output is correct
100 Correct 194 ms 17272 KB Output is correct
101 Correct 196 ms 15280 KB Output is correct
102 Correct 181 ms 14712 KB Output is correct
103 Correct 193 ms 14328 KB Output is correct
104 Correct 117 ms 14392 KB Output is correct
105 Correct 231 ms 23328 KB Output is correct
106 Correct 135 ms 14492 KB Output is correct
107 Correct 132 ms 14388 KB Output is correct
108 Correct 236 ms 27120 KB Output is correct
109 Correct 125 ms 14440 KB Output is correct
110 Correct 226 ms 27424 KB Output is correct
111 Correct 191 ms 13688 KB Output is correct