oj.uz

Submission #309036

# Submission time Handle Problem Language Result Execution time Memory
309036 2020-10-02T15:33:46 Z nhdtxdy Power Plant (JOI20_power) C++17
100 / 100
 212 ms 29044 KB 
//#pragma GCC optimize("Ofast")
//#pragma GCC optimization("unroll-loops, no-stack-protector")
//#pragma GCC target("avx,avx2,fma")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#define ordered_set tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>
#define Snape int main()
#define lumos ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
#define nox return 0
#define ll long long
#define pb push_back
#define Size(v) (int)v.size()
#define FOR(i, x, y) for(int i = x; i <= y; ++i)
#define trav(a, x) for(auto &a : x)
using namespace std;
using namespace __gnu_pbds;

/*
"After all this time?"
"Always"
*/

const int nax = 2e5+5;
int n, dp[nax];
vector<int> g[nax];
string s;
int ans=0;

void dfs(int v, int p=0) {
	trav(c, g[v]) {
		if (c==p) continue;
		dfs(c, v);
	}
	int val = (s[v]=='1');
	dp[v]=max(dp[v],val);
	int sum=0;
	trav(c, g[v]) {
		if (c==p) continue;
		sum+=dp[c];
	}
	dp[v]=max(dp[v],sum-val);
	ans=max(ans,dp[v]);
	trav(c, g[v]) {
		if (c==p) continue;
		ans=max(ans,dp[c]+val);
	}
}

//void calc(int v, int p=0) {
//	trav(c, g[v]) {
//		if (c==p) continue;
//		calc(c, v);
//	}
//	int val = (s[v]=='1');
//	if (val==0) {
//		int sum=0;
//		trav(c, g[v]) {
//			if (c==p) continue;
//			sum+=dp[c];
//		}
//		ans=max(ans,sum);
//	}
//	else {
//		int sum=0;
//		trav(c, g[v]) {
//			if (c == p) continue;
//			ans=max(ans,dp[c]+1);
//			sum+=dp[c];
//		}
//		ans=max(ans,sum-1);
//	}
//}

int main() {
	lumos;
	cin >> n;
	FOR (i,1,n-1) {
		int a,b; cin>>a>>b;
		g[a].pb(b);
		g[b].pb(a);
	}
	cin >> s; s = ' ' + s;
	dfs(1);
//	calc(1);
	cout<<ans;
	nox;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5120 KB Output is correct
2 Correct 3 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 3 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 3 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 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 3 ms 4992 KB Output is correct
17 Correct 3 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 3 ms 4992 KB Output is correct
21 Correct 5 ms 4992 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5120 KB Output is correct
2 Correct 3 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 3 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 3 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 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 3 ms 4992 KB Output is correct
17 Correct 3 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 3 ms 4992 KB Output is correct
21 Correct 5 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 5248 KB Output is correct
27 Correct 4 ms 5120 KB Output is correct
28 Correct 4 ms 5120 KB Output is correct
29 Correct 5 ms 5248 KB Output is correct
30 Correct 5 ms 5248 KB Output is correct
31 Correct 5 ms 5120 KB Output is correct
32 Correct 4 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 4 ms 5120 KB Output is correct
35 Correct 5 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 5 ms 5120 KB Output is correct
40 Correct 5 ms 5120 KB Output is correct
41 Correct 4 ms 5248 KB Output is correct
42 Correct 5 ms 5120 KB Output is correct
43 Correct 4 ms 5120 KB Output is correct
44 Correct 4 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 4 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 5 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 4 ms 5248 KB Output is correct
58 Correct 4 ms 5120 KB Output is correct
59 Correct 4 ms 5120 KB Output is correct
60 Correct 4 ms 5248 KB Output is correct
61 Correct 4 ms 5120 KB Output is correct
62 Correct 4 ms 5248 KB Output is correct
63 Correct 4 ms 5120 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5120 KB Output is correct
2 Correct 3 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 3 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 3 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 4 ms 5120 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 3 ms 4992 KB Output is correct
17 Correct 3 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 3 ms 4992 KB Output is correct
21 Correct 5 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 5248 KB Output is correct
27 Correct 4 ms 5120 KB Output is correct
28 Correct 4 ms 5120 KB Output is correct
29 Correct 5 ms 5248 KB Output is correct
30 Correct 5 ms 5248 KB Output is correct
31 Correct 5 ms 5120 KB Output is correct
32 Correct 4 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 4 ms 5120 KB Output is correct
35 Correct 5 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 5 ms 5120 KB Output is correct
40 Correct 5 ms 5120 KB Output is correct
41 Correct 4 ms 5248 KB Output is correct
42 Correct 5 ms 5120 KB Output is correct
43 Correct 4 ms 5120 KB Output is correct
44 Correct 4 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 4 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 5 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 4 ms 5248 KB Output is correct
58 Correct 4 ms 5120 KB Output is correct
59 Correct 4 ms 5120 KB Output is correct
60 Correct 4 ms 5248 KB Output is correct
61 Correct 4 ms 5120 KB Output is correct
62 Correct 4 ms 5248 KB Output is correct
63 Correct 4 ms 5120 KB Output is correct
64 Correct 169 ms 15280 KB Output is correct
65 Correct 170 ms 15224 KB Output is correct
66 Correct 170 ms 15200 KB Output is correct
67 Correct 164 ms 15220 KB Output is correct
68 Correct 171 ms 15200 KB Output is correct
69 Correct 165 ms 15216 KB Output is correct
70 Correct 167 ms 15232 KB Output is correct
71 Correct 169 ms 15360 KB Output is correct
72 Correct 165 ms 15216 KB Output is correct
73 Correct 191 ms 27892 KB Output is correct
74 Correct 193 ms 27892 KB Output is correct
75 Correct 168 ms 15220 KB Output is correct
76 Correct 188 ms 15104 KB Output is correct
77 Correct 174 ms 15256 KB Output is correct
78 Correct 183 ms 15092 KB Output is correct
79 Correct 176 ms 15100 KB Output is correct
80 Correct 179 ms 15096 KB Output is correct
81 Correct 139 ms 15600 KB Output is correct
82 Correct 157 ms 15284 KB Output is correct
83 Correct 186 ms 20280 KB Output is correct
84 Correct 190 ms 22532 KB Output is correct
85 Correct 200 ms 22296 KB Output is correct
86 Correct 170 ms 16628 KB Output is correct
87 Correct 174 ms 15984 KB Output is correct
88 Correct 163 ms 16432 KB Output is correct
89 Correct 166 ms 16388 KB Output is correct
90 Correct 166 ms 16308 KB Output is correct
91 Correct 159 ms 16476 KB Output is correct
92 Correct 162 ms 16740 KB Output is correct
93 Correct 164 ms 19152 KB Output is correct
94 Correct 149 ms 20928 KB Output is correct
95 Correct 158 ms 19628 KB Output is correct
96 Correct 168 ms 17760 KB Output is correct
97 Correct 158 ms 16336 KB Output is correct
98 Correct 154 ms 15780 KB Output is correct
99 Correct 166 ms 15600 KB Output is correct
100 Correct 161 ms 18784 KB Output is correct
101 Correct 160 ms 16752 KB Output is correct
102 Correct 158 ms 16064 KB Output is correct
103 Correct 162 ms 15892 KB Output is correct
104 Correct 97 ms 16108 KB Output is correct
105 Correct 196 ms 24676 KB Output is correct
106 Correct 95 ms 15976 KB Output is correct
107 Correct 102 ms 15980 KB Output is correct
108 Correct 199 ms 28656 KB Output is correct
109 Correct 102 ms 16296 KB Output is correct
110 Correct 212 ms 29044 KB Output is correct
111 Correct 156 ms 15108 KB Output is correct