oj.uz

Submission #763281

# Submission time Handle Problem Language Result Execution time Memory
763281 2023-06-22T07:37:20 Z vjudge1 Power Plant (JOI20_power) C++14
47 / 100
 87 ms 24956 KB 
//#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC target("bmi,bmi2,lzcnt,popcnt")
//#pragma GCC target("avx2,popcnt,lzcnt,abm,bmi,bmi2,fma,tune=native")
//#pragma expected_value
//#pragma isolated_call
//#pragma disjoint

#include<bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>

//using namespace __gnu_pbds;
using namespace std;

//#define int long long
//#define double long double
#define Fi first
#define Se second
#define Rep(i,a,b) for (int i=a;i<=b;++i)
#define Repu(i,b,a) for (int i=b;i>=a;--i)
#define pb push_back
#define ms(a,i) memset(a,i,sizeof(a))
#define sz size()
#define mp make_pair
#define endl '\n'
#define sef setprecision(12)<<fixed
#define cer cout<<"cak"<<endl;

typedef pair<int,int> ii;
typedef vector<int> vi;
typedef vector<double> va;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<va> vva;

//const double EPS=1e-9;
const double PI=acos(-1);
//const int oo=1e18;
const int MN=2e5+5;
const int mod=1e9+7;

using cd=complex<double>;

//typedef tree<int,null_type,less<int>,rb_tree_tag, tree_order_statistics_node_update> index_set;

int n;
vi adj[MN];

char s[MN];

int siz[MN];

void dfs(int u,int pre) {
	int sum = 0;
	for(int v:adj[u]) {
		if(v==pre) continue;
		dfs(v,u);
		sum += siz[v];
	}

	if(s[u]=='1') {
		sum--;
		siz[u] = max(1,sum);
	}
	else {
		siz[u] = sum;
	}
}

void solve(int u) {
	for(int v:adj[u]) {
		dfs(v,u);
		siz[u] = max(siz[u], siz[v]);
	}
	siz[u]++;
}

void process(int u) {
	for(int v:adj[u]) {
		dfs(v,u);
		siz[u] += siz[v];
	}
}

int dp[MN];

void DFS(int u,int pre) {
	int sum = 0;
	int mx=0;
	for(int v:adj[u]) {
		if(v==pre) continue;
		dfs(v,u);
		sum += siz[v];
		mx=max(mx,siz[v]);
	}

	if(s[u]=='1') {
		sum--;
		mx++;
		siz[u] = max(1,sum);
	}
	else {
		siz[u] = sum;
	}

	siz[u] = max(mx,siz[u]);
}

signed main() {
	//freopen(".inp","r",stdin); freopen(".out","w",stdout);

	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	cin>>n;
	Rep(i,1,n-1) {
		int u,v; cin>>u>>v;
		adj[u].pb(v); adj[v].pb(u);
	}

	Rep(i,1,n) cin>>s[i];

	int ans=0;

	if(n<=2000) {
		Rep(i,1,n) {
			if(s[i]=='1') {
				Rep(i,1,n) siz[i] = 0;
				solve(i);
				ans=max(ans,siz[i]);
			}
			else {
				Rep(i,1,n) siz[i] = 0;
				process(i);
				ans=max(ans,siz[i]);
			}
		}

		cout<<ans;

		return 0;
	}

	DFS(1,1);
	cout<<siz[1];
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4996 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 2 ms 4948 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4996 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 2 ms 4948 KB Output is correct
22 Correct 36 ms 5096 KB Output is correct
23 Correct 36 ms 5076 KB Output is correct
24 Correct 36 ms 5076 KB Output is correct
25 Correct 35 ms 5076 KB Output is correct
26 Correct 34 ms 5116 KB Output is correct
27 Correct 34 ms 5076 KB Output is correct
28 Correct 34 ms 5076 KB Output is correct
29 Correct 57 ms 5252 KB Output is correct
30 Correct 55 ms 5244 KB Output is correct
31 Correct 31 ms 5076 KB Output is correct
32 Correct 32 ms 5076 KB Output is correct
33 Correct 38 ms 5076 KB Output is correct
34 Correct 37 ms 5112 KB Output is correct
35 Correct 36 ms 5076 KB Output is correct
36 Correct 36 ms 5076 KB Output is correct
37 Correct 37 ms 5112 KB Output is correct
38 Correct 32 ms 5116 KB Output is correct
39 Correct 45 ms 5184 KB Output is correct
40 Correct 42 ms 5076 KB Output is correct
41 Correct 39 ms 5076 KB Output is correct
42 Correct 37 ms 5148 KB Output is correct
43 Correct 37 ms 5140 KB Output is correct
44 Correct 37 ms 5076 KB Output is correct
45 Correct 36 ms 5076 KB Output is correct
46 Correct 37 ms 5124 KB Output is correct
47 Correct 38 ms 5120 KB Output is correct
48 Correct 38 ms 5076 KB Output is correct
49 Correct 38 ms 5076 KB Output is correct
50 Correct 38 ms 5144 KB Output is correct
51 Correct 38 ms 5076 KB Output is correct
52 Correct 36 ms 5076 KB Output is correct
53 Correct 33 ms 5076 KB Output is correct
54 Correct 38 ms 5076 KB Output is correct
55 Correct 38 ms 5132 KB Output is correct
56 Correct 21 ms 5076 KB Output is correct
57 Correct 50 ms 5240 KB Output is correct
58 Correct 21 ms 5104 KB Output is correct
59 Correct 25 ms 5100 KB Output is correct
60 Correct 50 ms 5244 KB Output is correct
61 Correct 21 ms 5120 KB Output is correct
62 Correct 57 ms 5204 KB Output is correct
63 Correct 29 ms 5076 KB Output is correct

Subtask #3
0.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 2 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4996 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 2 ms 4948 KB Output is correct
22 Correct 36 ms 5096 KB Output is correct
23 Correct 36 ms 5076 KB Output is correct
24 Correct 36 ms 5076 KB Output is correct
25 Correct 35 ms 5076 KB Output is correct
26 Correct 34 ms 5116 KB Output is correct
27 Correct 34 ms 5076 KB Output is correct
28 Correct 34 ms 5076 KB Output is correct
29 Correct 57 ms 5252 KB Output is correct
30 Correct 55 ms 5244 KB Output is correct
31 Correct 31 ms 5076 KB Output is correct
32 Correct 32 ms 5076 KB Output is correct
33 Correct 38 ms 5076 KB Output is correct
34 Correct 37 ms 5112 KB Output is correct
35 Correct 36 ms 5076 KB Output is correct
36 Correct 36 ms 5076 KB Output is correct
37 Correct 37 ms 5112 KB Output is correct
38 Correct 32 ms 5116 KB Output is correct
39 Correct 45 ms 5184 KB Output is correct
40 Correct 42 ms 5076 KB Output is correct
41 Correct 39 ms 5076 KB Output is correct
42 Correct 37 ms 5148 KB Output is correct
43 Correct 37 ms 5140 KB Output is correct
44 Correct 37 ms 5076 KB Output is correct
45 Correct 36 ms 5076 KB Output is correct
46 Correct 37 ms 5124 KB Output is correct
47 Correct 38 ms 5120 KB Output is correct
48 Correct 38 ms 5076 KB Output is correct
49 Correct 38 ms 5076 KB Output is correct
50 Correct 38 ms 5144 KB Output is correct
51 Correct 38 ms 5076 KB Output is correct
52 Correct 36 ms 5076 KB Output is correct
53 Correct 33 ms 5076 KB Output is correct
54 Correct 38 ms 5076 KB Output is correct
55 Correct 38 ms 5132 KB Output is correct
56 Correct 21 ms 5076 KB Output is correct
57 Correct 50 ms 5240 KB Output is correct
58 Correct 21 ms 5104 KB Output is correct
59 Correct 25 ms 5100 KB Output is correct
60 Correct 50 ms 5244 KB Output is correct
61 Correct 21 ms 5120 KB Output is correct
62 Correct 57 ms 5204 KB Output is correct
63 Correct 29 ms 5076 KB Output is correct
64 Correct 63 ms 12356 KB Output is correct
65 Correct 63 ms 12360 KB Output is correct
66 Correct 63 ms 12348 KB Output is correct
67 Correct 66 ms 12312 KB Output is correct
68 Correct 62 ms 12284 KB Output is correct
69 Correct 61 ms 12364 KB Output is correct
70 Correct 63 ms 12320 KB Output is correct
71 Correct 83 ms 12328 KB Output is correct
72 Correct 72 ms 12264 KB Output is correct
73 Correct 77 ms 24956 KB Output is correct
74 Correct 87 ms 24920 KB Output is correct
75 Correct 63 ms 12196 KB Output is correct
76 Correct 60 ms 12244 KB Output is correct
77 Incorrect 62 ms 12160 KB Output isn't correct
78 Halted 0 ms 0 KB -