oj.uz

Submission #763276

# Submission time Handle Problem Language Result Execution time Memory
763276 2023-06-22T07:33:40 Z nhphan0505 Power Plant (JOI20_power) C++17
100 / 100
 129 ms 30080 KB 
#include<bits/stdc++.h>

using namespace std;
typedef long long int ll;
typedef pair<ll, ll> pii;
#define fi first
#define se second
#define gcd __gcd
#define endl '\n'
const int N=200050,M=1000000007;
const ll INF=0x3f3f3f3f3f3f3f3f;

ll n, u, v, cnt[N], dp[N], ans;
bool plant[N], visited[N];
char c;
vector<vector<ll>> adj;

void dfs(ll u){
	visited[u]=1;
	ll mx=0, ct=0, pos=0;
	for(auto v:adj[u]){
		if(!visited[v]){ 
			dfs(v);
			cnt[u]+=cnt[v];
			mx=max(mx, cnt[v]);
			if(cnt[v]) ++ct, pos=v;
		}
	}
	if(plant[u]) dp[u]=mx+1;
	if(ct>1) dp[u]=max(dp[u], cnt[u]-plant[u]);
	else dp[u]=max(dp[u], dp[pos]);
	cnt[u]=max(cnt[u]-plant[u], 1LL*plant[u]);
	// cout<<u<<" "<<dp[u]<<" "<<cnt[u]<<endl;
	ans=max(ans, dp[u]);
}

signed main(){
	ios_base::sync_with_stdio(NULL); 
	cin.tie(nullptr); cout.tie(nullptr);
	cin>>n;
	adj.assign(n+1, {});
	for(ll i=1; i<n; ++i){
		cin>>u>>v;
		adj[u].emplace_back(v);
		adj[v].emplace_back(u);
	}
	for(ll i=1; i<=n; ++i){
		cin>>c;
		plant[i]=c-'0';
		// if(plant[i]) cout<<i<<" ";
	}
	// cout<<endl;
	dfs(1);
	cout<<ans;
    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 324 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 288 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 324 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 0 ms 328 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 1 ms 340 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 324 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 288 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 324 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 0 ms 328 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 432 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 2 ms 468 KB Output is correct
29 Correct 1 ms 600 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 472 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1 ms 468 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 468 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 1 ms 468 KB Output is correct
40 Correct 1 ms 460 KB Output is correct
41 Correct 1 ms 468 KB Output is correct
42 Correct 1 ms 464 KB Output is correct
43 Correct 1 ms 468 KB Output is correct
44 Correct 2 ms 488 KB Output is correct
45 Correct 1 ms 464 KB Output is correct
46 Correct 1 ms 436 KB Output is correct
47 Correct 1 ms 468 KB Output is correct
48 Correct 1 ms 468 KB Output is correct
49 Correct 1 ms 468 KB Output is correct
50 Correct 1 ms 468 KB Output is correct
51 Correct 1 ms 468 KB Output is correct
52 Correct 1 ms 468 KB Output is correct
53 Correct 1 ms 468 KB Output is correct
54 Correct 1 ms 468 KB Output is correct
55 Correct 1 ms 464 KB Output is correct
56 Correct 1 ms 436 KB Output is correct
57 Correct 1 ms 596 KB Output is correct
58 Correct 1 ms 468 KB Output is correct
59 Correct 1 ms 468 KB Output is correct
60 Correct 1 ms 468 KB Output is correct
61 Correct 1 ms 468 KB Output is correct
62 Correct 2 ms 596 KB Output is correct
63 Correct 1 ms 468 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 292 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 324 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 0 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 332 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 288 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 0 ms 324 KB Output is correct
15 Correct 1 ms 328 KB Output is correct
16 Correct 0 ms 328 KB Output is correct
17 Correct 0 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 468 KB Output is correct
26 Correct 1 ms 432 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 2 ms 468 KB Output is correct
29 Correct 1 ms 600 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 472 KB Output is correct
33 Correct 1 ms 468 KB Output is correct
34 Correct 1 ms 468 KB Output is correct
35 Correct 1 ms 468 KB Output is correct
36 Correct 1 ms 468 KB Output is correct
37 Correct 1 ms 468 KB Output is correct
38 Correct 1 ms 468 KB Output is correct
39 Correct 1 ms 468 KB Output is correct
40 Correct 1 ms 460 KB Output is correct
41 Correct 1 ms 468 KB Output is correct
42 Correct 1 ms 464 KB Output is correct
43 Correct 1 ms 468 KB Output is correct
44 Correct 2 ms 488 KB Output is correct
45 Correct 1 ms 464 KB Output is correct
46 Correct 1 ms 436 KB Output is correct
47 Correct 1 ms 468 KB Output is correct
48 Correct 1 ms 468 KB Output is correct
49 Correct 1 ms 468 KB Output is correct
50 Correct 1 ms 468 KB Output is correct
51 Correct 1 ms 468 KB Output is correct
52 Correct 1 ms 468 KB Output is correct
53 Correct 1 ms 468 KB Output is correct
54 Correct 1 ms 468 KB Output is correct
55 Correct 1 ms 464 KB Output is correct
56 Correct 1 ms 436 KB Output is correct
57 Correct 1 ms 596 KB Output is correct
58 Correct 1 ms 468 KB Output is correct
59 Correct 1 ms 468 KB Output is correct
60 Correct 1 ms 468 KB Output is correct
61 Correct 1 ms 468 KB Output is correct
62 Correct 2 ms 596 KB Output is correct
63 Correct 1 ms 468 KB Output is correct
64 Correct 85 ms 17356 KB Output is correct
65 Correct 115 ms 17380 KB Output is correct
66 Correct 89 ms 17336 KB Output is correct
67 Correct 90 ms 17380 KB Output is correct
68 Correct 82 ms 17344 KB Output is correct
69 Correct 97 ms 17336 KB Output is correct
70 Correct 90 ms 17332 KB Output is correct
71 Correct 110 ms 17356 KB Output is correct
72 Correct 91 ms 17316 KB Output is correct
73 Correct 115 ms 29040 KB Output is correct
74 Correct 104 ms 28884 KB Output is correct
75 Correct 121 ms 18532 KB Output is correct
76 Correct 93 ms 18636 KB Output is correct
77 Correct 115 ms 17376 KB Output is correct
78 Correct 121 ms 17304 KB Output is correct
79 Correct 87 ms 17312 KB Output is correct
80 Correct 102 ms 17356 KB Output is correct
81 Correct 94 ms 17372 KB Output is correct
82 Correct 80 ms 17280 KB Output is correct
83 Correct 110 ms 22520 KB Output is correct
84 Correct 98 ms 24532 KB Output is correct
85 Correct 102 ms 24268 KB Output is correct
86 Correct 129 ms 18752 KB Output is correct
87 Correct 85 ms 18108 KB Output is correct
88 Correct 104 ms 18272 KB Output is correct
89 Correct 93 ms 18252 KB Output is correct
90 Correct 83 ms 18068 KB Output is correct
91 Correct 103 ms 18248 KB Output is correct
92 Correct 94 ms 18636 KB Output is correct
93 Correct 106 ms 20804 KB Output is correct
94 Correct 84 ms 22528 KB Output is correct
95 Correct 76 ms 21176 KB Output is correct
96 Correct 91 ms 19536 KB Output is correct
97 Correct 76 ms 18040 KB Output is correct
98 Correct 76 ms 17484 KB Output is correct
99 Correct 82 ms 17448 KB Output is correct
100 Correct 80 ms 20380 KB Output is correct
101 Correct 109 ms 18360 KB Output is correct
102 Correct 110 ms 17612 KB Output is correct
103 Correct 80 ms 17616 KB Output is correct
104 Correct 53 ms 17808 KB Output is correct
105 Correct 119 ms 25852 KB Output is correct
106 Correct 62 ms 17848 KB Output is correct
107 Correct 50 ms 17792 KB Output is correct
108 Correct 90 ms 29736 KB Output is correct
109 Correct 64 ms 17848 KB Output is correct
110 Correct 101 ms 30080 KB Output is correct
111 Correct 90 ms 17328 KB Output is correct