oj.uz

Submission #868752

# Submission time Handle Problem Language Result Execution time Memory
868752 2023-11-01T22:52:14 Z rorro Power Plant (JOI20_power) C++17
100 / 100
 122 ms 42128 KB 
#include <bits/stdc++.h>

#define ll long long
#define lld long double
#define fi first
#define se second
#define mp make_pair
#define ii pair<int, int>
#define vi vector<int>
#define vvi vector<vector<int> >
#define pb push_back
#define eb emplace_back
#define remax(a, b) a = max(a, b);
#define remin(a, b) a = min(a, b);
#define all(x) x.begin(), x.end()
#define fastio() ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define bit(n, x) (n & (1 << x))

using namespace std;
int ans = 0;
const int maxn=2e5+1;
vvi edges(maxn);
vvi dp(maxn, vi(2, 0));
string s;

void dfs(int cur, int par) {
	int sm0=0, sm1=0, mx0=0, mx1=0;
	for (int next : edges[cur]) {
		if (next != par) {
			dfs(next, cur);
			sm0 += max(0, dp[next][0]);
			sm1 += max(0, dp[next][1]);
			remax(mx0, dp[next][0]);
			remax(mx1, dp[next][1]);
		}
	}
	if (s[cur] == '1') { //if there is
		dp[cur][1] = max({1, sm1-1}); 
		dp[cur][0] = max({1, sm1-1, mx0, mx1+1}); 
	} else {
		dp[cur][1] = max({sm1});
		dp[cur][0] = max({sm1, mx0});
	}
	//remax(ans, dp[cur][0]);
}

int main() {
	fastio();
	int n;
	cin >> n;
	for (int i = 1; i < n; ++i) {
		int a, b;
		cin >> a >> b;
		--a;--b;
		edges[a].eb(b);
		edges[b].eb(a);
	}
	cin >> s;
	dfs(0, -1);
	/*for (int i = 0; i < n; ++i) {
		cout << i+1 << ' ' << dp[i][0] << ' ' << dp[i][1] << endl;
	}*/
	cout << dp[0][0] << '\n';
    return 0;
}

/* --3
6
2 3
4 3
1 3
3 5
6 2
110011
*/

/* --3
8
1 2
3 5
6 4
4 5
5 2
7 2
2 8
11111111
*/

/* --5
16
7 10
5 11
9 4
14 12
2 11
14 16
4 2
1 13
11 3
7 1
15 9
2 1
11 6
14 9
8 9
0111111001001110
*/

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 15960 KB Output is correct
2 Correct 10 ms 16080 KB Output is correct
3 Correct 10 ms 15960 KB Output is correct
4 Correct 10 ms 15964 KB Output is correct
5 Correct 10 ms 15960 KB Output is correct
6 Correct 11 ms 15964 KB Output is correct
7 Correct 10 ms 16096 KB Output is correct
8 Correct 10 ms 15964 KB Output is correct
9 Correct 9 ms 15964 KB Output is correct
10 Correct 10 ms 15960 KB Output is correct
11 Correct 10 ms 15964 KB Output is correct
12 Correct 10 ms 16132 KB Output is correct
13 Correct 10 ms 16128 KB Output is correct
14 Correct 10 ms 16012 KB Output is correct
15 Correct 9 ms 15960 KB Output is correct
16 Correct 9 ms 15960 KB Output is correct
17 Correct 11 ms 15964 KB Output is correct
18 Correct 10 ms 16216 KB Output is correct
19 Correct 10 ms 15964 KB Output is correct
20 Correct 10 ms 15872 KB Output is correct
21 Correct 11 ms 15964 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 15960 KB Output is correct
2 Correct 10 ms 16080 KB Output is correct
3 Correct 10 ms 15960 KB Output is correct
4 Correct 10 ms 15964 KB Output is correct
5 Correct 10 ms 15960 KB Output is correct
6 Correct 11 ms 15964 KB Output is correct
7 Correct 10 ms 16096 KB Output is correct
8 Correct 10 ms 15964 KB Output is correct
9 Correct 9 ms 15964 KB Output is correct
10 Correct 10 ms 15960 KB Output is correct
11 Correct 10 ms 15964 KB Output is correct
12 Correct 10 ms 16132 KB Output is correct
13 Correct 10 ms 16128 KB Output is correct
14 Correct 10 ms 16012 KB Output is correct
15 Correct 9 ms 15960 KB Output is correct
16 Correct 9 ms 15960 KB Output is correct
17 Correct 11 ms 15964 KB Output is correct
18 Correct 10 ms 16216 KB Output is correct
19 Correct 10 ms 15964 KB Output is correct
20 Correct 10 ms 15872 KB Output is correct
21 Correct 11 ms 15964 KB Output is correct
22 Correct 11 ms 15972 KB Output is correct
23 Correct 10 ms 16216 KB Output is correct
24 Correct 10 ms 15964 KB Output is correct
25 Correct 10 ms 15964 KB Output is correct
26 Correct 10 ms 15964 KB Output is correct
27 Correct 11 ms 16064 KB Output is correct
28 Correct 10 ms 16220 KB Output is correct
29 Correct 10 ms 16220 KB Output is correct
30 Correct 10 ms 16208 KB Output is correct
31 Correct 11 ms 15964 KB Output is correct
32 Correct 10 ms 15960 KB Output is correct
33 Correct 11 ms 15968 KB Output is correct
34 Correct 10 ms 15960 KB Output is correct
35 Correct 11 ms 16008 KB Output is correct
36 Correct 10 ms 15964 KB Output is correct
37 Correct 10 ms 16220 KB Output is correct
38 Correct 10 ms 15964 KB Output is correct
39 Correct 10 ms 16220 KB Output is correct
40 Correct 11 ms 16256 KB Output is correct
41 Correct 13 ms 16136 KB Output is correct
42 Correct 11 ms 16220 KB Output is correct
43 Correct 10 ms 16216 KB Output is correct
44 Correct 12 ms 16216 KB Output is correct
45 Correct 10 ms 16220 KB Output is correct
46 Correct 10 ms 16220 KB Output is correct
47 Correct 11 ms 16232 KB Output is correct
48 Correct 10 ms 16216 KB Output is correct
49 Correct 10 ms 16216 KB Output is correct
50 Correct 10 ms 16220 KB Output is correct
51 Correct 11 ms 16220 KB Output is correct
52 Correct 11 ms 16272 KB Output is correct
53 Correct 10 ms 16220 KB Output is correct
54 Correct 10 ms 16256 KB Output is correct
55 Correct 10 ms 16160 KB Output is correct
56 Correct 10 ms 16220 KB Output is correct
57 Correct 10 ms 16376 KB Output is correct
58 Correct 10 ms 16216 KB Output is correct
59 Correct 10 ms 16216 KB Output is correct
60 Correct 10 ms 16220 KB Output is correct
61 Correct 11 ms 16132 KB Output is correct
62 Correct 10 ms 16220 KB Output is correct
63 Correct 10 ms 16220 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 15960 KB Output is correct
2 Correct 10 ms 16080 KB Output is correct
3 Correct 10 ms 15960 KB Output is correct
4 Correct 10 ms 15964 KB Output is correct
5 Correct 10 ms 15960 KB Output is correct
6 Correct 11 ms 15964 KB Output is correct
7 Correct 10 ms 16096 KB Output is correct
8 Correct 10 ms 15964 KB Output is correct
9 Correct 9 ms 15964 KB Output is correct
10 Correct 10 ms 15960 KB Output is correct
11 Correct 10 ms 15964 KB Output is correct
12 Correct 10 ms 16132 KB Output is correct
13 Correct 10 ms 16128 KB Output is correct
14 Correct 10 ms 16012 KB Output is correct
15 Correct 9 ms 15960 KB Output is correct
16 Correct 9 ms 15960 KB Output is correct
17 Correct 11 ms 15964 KB Output is correct
18 Correct 10 ms 16216 KB Output is correct
19 Correct 10 ms 15964 KB Output is correct
20 Correct 10 ms 15872 KB Output is correct
21 Correct 11 ms 15964 KB Output is correct
22 Correct 11 ms 15972 KB Output is correct
23 Correct 10 ms 16216 KB Output is correct
24 Correct 10 ms 15964 KB Output is correct
25 Correct 10 ms 15964 KB Output is correct
26 Correct 10 ms 15964 KB Output is correct
27 Correct 11 ms 16064 KB Output is correct
28 Correct 10 ms 16220 KB Output is correct
29 Correct 10 ms 16220 KB Output is correct
30 Correct 10 ms 16208 KB Output is correct
31 Correct 11 ms 15964 KB Output is correct
32 Correct 10 ms 15960 KB Output is correct
33 Correct 11 ms 15968 KB Output is correct
34 Correct 10 ms 15960 KB Output is correct
35 Correct 11 ms 16008 KB Output is correct
36 Correct 10 ms 15964 KB Output is correct
37 Correct 10 ms 16220 KB Output is correct
38 Correct 10 ms 15964 KB Output is correct
39 Correct 10 ms 16220 KB Output is correct
40 Correct 11 ms 16256 KB Output is correct
41 Correct 13 ms 16136 KB Output is correct
42 Correct 11 ms 16220 KB Output is correct
43 Correct 10 ms 16216 KB Output is correct
44 Correct 12 ms 16216 KB Output is correct
45 Correct 10 ms 16220 KB Output is correct
46 Correct 10 ms 16220 KB Output is correct
47 Correct 11 ms 16232 KB Output is correct
48 Correct 10 ms 16216 KB Output is correct
49 Correct 10 ms 16216 KB Output is correct
50 Correct 10 ms 16220 KB Output is correct
51 Correct 11 ms 16220 KB Output is correct
52 Correct 11 ms 16272 KB Output is correct
53 Correct 10 ms 16220 KB Output is correct
54 Correct 10 ms 16256 KB Output is correct
55 Correct 10 ms 16160 KB Output is correct
56 Correct 10 ms 16220 KB Output is correct
57 Correct 10 ms 16376 KB Output is correct
58 Correct 10 ms 16216 KB Output is correct
59 Correct 10 ms 16216 KB Output is correct
60 Correct 10 ms 16220 KB Output is correct
61 Correct 11 ms 16132 KB Output is correct
62 Correct 10 ms 16220 KB Output is correct
63 Correct 10 ms 16220 KB Output is correct
64 Correct 97 ms 25620 KB Output is correct
65 Correct 89 ms 25532 KB Output is correct
66 Correct 95 ms 25644 KB Output is correct
67 Correct 90 ms 25576 KB Output is correct
68 Correct 97 ms 25452 KB Output is correct
69 Correct 86 ms 25476 KB Output is correct
70 Correct 99 ms 25500 KB Output is correct
71 Correct 89 ms 25500 KB Output is correct
72 Correct 86 ms 25488 KB Output is correct
73 Correct 122 ms 40596 KB Output is correct
74 Correct 106 ms 40596 KB Output is correct
75 Correct 88 ms 25384 KB Output is correct
76 Correct 88 ms 25404 KB Output is correct
77 Correct 120 ms 25528 KB Output is correct
78 Correct 91 ms 25396 KB Output is correct
79 Correct 92 ms 25404 KB Output is correct
80 Correct 93 ms 25396 KB Output is correct
81 Correct 80 ms 25672 KB Output is correct
82 Correct 93 ms 25612 KB Output is correct
83 Correct 104 ms 31640 KB Output is correct
84 Correct 99 ms 34140 KB Output is correct
85 Correct 98 ms 33696 KB Output is correct
86 Correct 92 ms 26956 KB Output is correct
87 Correct 90 ms 26252 KB Output is correct
88 Correct 109 ms 26656 KB Output is correct
89 Correct 92 ms 26780 KB Output is correct
90 Correct 96 ms 26612 KB Output is correct
91 Correct 97 ms 26736 KB Output is correct
92 Correct 104 ms 27236 KB Output is correct
93 Correct 91 ms 30044 KB Output is correct
94 Correct 94 ms 32316 KB Output is correct
95 Correct 92 ms 30696 KB Output is correct
96 Correct 97 ms 28412 KB Output is correct
97 Correct 95 ms 26600 KB Output is correct
98 Correct 99 ms 26036 KB Output is correct
99 Correct 96 ms 25828 KB Output is correct
100 Correct 96 ms 29692 KB Output is correct
101 Correct 95 ms 27252 KB Output is correct
102 Correct 92 ms 26208 KB Output is correct
103 Correct 91 ms 26048 KB Output is correct
104 Correct 65 ms 26308 KB Output is correct
105 Correct 108 ms 36756 KB Output is correct
106 Correct 73 ms 26056 KB Output is correct
107 Correct 64 ms 26272 KB Output is correct
108 Correct 102 ms 41496 KB Output is correct
109 Correct 66 ms 26308 KB Output is correct
110 Correct 118 ms 42128 KB Output is correct
111 Correct 94 ms 25408 KB Output is correct