oj.uz

Submission #543342

# Submission time Handle Problem Language Result Execution time Memory
543342 2022-03-30T10:18:37 Z RaresFelix Power Plant (JOI20_power) C++17
100 / 100
 155 ms 30788 KB 
#include <bits/stdc++.h>
#define MN 200071

using namespace std;
int n;
vector<int> L[MN];
bitset<MN> On;
using ii = pair<int, int>;
ii dp(int u, int p) {
	int r1 = 0, r2 = 0, r3;
	vector<ii> F;
	for(auto it : L[u])
		if(it != p) F.push_back(dp(it, u));
	//ceva de sus
	if(On[u - 1]) {
		r1 = -1; // il sparg
		for(auto [a, b] : F) r1 += a;
		r1 = max(r1, 1);
	} else
		for(auto [a, b] : F) r1 += a;
	//nimic de sus
	if(On[u - 1]) {
		int sa = 0, bb = 0, ba = 0;
		for(auto [a, b] : F) {
			bb = max(bb, b);
			ba = max(ba, a);
			sa += a;
		}
		r2 = max(bb, max(sa - 1, ba + 1));
		r2 = max(r2, 1);
	} else {
		int sa = 0, bb = 0;
		for(auto [a, b] : F) {
			bb = max(bb, b);
			sa += a;
		}
		r2 = max(bb, sa);
	}

	return {r1, r2};
}

int main() {
	cin.tie(0)->sync_with_stdio(0);
	cin >> n;
	for(int i = 1, u, v; i < n; ++i) {
		cin >> u >> v;
		L[u].push_back(v);
		L[v].push_back(u);
	}
	string a;
	cin >> a;
	for(int i = 0; i < a.size(); ++i)
		On[i] = (a[i] == '1');
	auto [b, c] = dp(1, 0);
	cout << max(b, c) << "\n";
    return 0;
}

Compilation message

power.cpp: In function 'ii dp(int, int)':
power.cpp:10:22: warning: unused variable 'r3' [-Wunused-variable]
   10 |  int r1 = 0, r2 = 0, r3;
      |                      ^~
power.cpp: In function 'int main()':
power.cpp:53:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |  for(int i = 0; i < a.size(); ++i)
      |                 ~~^~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 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 3 ms 5028 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5076 KB Output is correct
9 Correct 3 ms 5036 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4924 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5032 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 5028 KB Output is correct
20 Correct 3 ms 5028 KB Output is correct
21 Correct 3 ms 5028 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 3 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 3 ms 5028 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5076 KB Output is correct
9 Correct 3 ms 5036 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4924 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5032 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 5028 KB Output is correct
20 Correct 3 ms 5028 KB Output is correct
21 Correct 3 ms 5028 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 3 ms 5076 KB Output is correct
24 Correct 3 ms 5076 KB Output is correct
25 Correct 5 ms 5076 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 4 ms 5040 KB Output is correct
28 Correct 4 ms 5036 KB Output is correct
29 Correct 4 ms 5204 KB Output is correct
30 Correct 4 ms 5204 KB Output is correct
31 Correct 4 ms 5040 KB Output is correct
32 Correct 3 ms 5076 KB Output is correct
33 Correct 4 ms 5032 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 4 ms 5076 KB Output is correct
36 Correct 4 ms 5112 KB Output is correct
37 Correct 4 ms 5076 KB Output is correct
38 Correct 4 ms 5040 KB Output is correct
39 Correct 4 ms 5136 KB Output is correct
40 Correct 5 ms 5076 KB Output is correct
41 Correct 4 ms 5164 KB Output is correct
42 Correct 3 ms 5076 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5040 KB Output is correct
45 Correct 4 ms 5044 KB Output is correct
46 Correct 4 ms 5076 KB Output is correct
47 Correct 3 ms 5040 KB Output is correct
48 Correct 4 ms 5220 KB Output is correct
49 Correct 5 ms 5204 KB Output is correct
50 Correct 4 ms 5080 KB Output is correct
51 Correct 4 ms 5036 KB Output is correct
52 Correct 3 ms 5036 KB Output is correct
53 Correct 3 ms 5040 KB Output is correct
54 Correct 3 ms 5076 KB Output is correct
55 Correct 4 ms 5032 KB Output is correct
56 Correct 3 ms 5076 KB Output is correct
57 Correct 3 ms 5216 KB Output is correct
58 Correct 4 ms 5076 KB Output is correct
59 Correct 4 ms 5076 KB Output is correct
60 Correct 4 ms 5076 KB Output is correct
61 Correct 3 ms 5076 KB Output is correct
62 Correct 4 ms 5204 KB Output is correct
63 Correct 4 ms 5076 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 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 3 ms 5028 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 3 ms 5076 KB Output is correct
9 Correct 3 ms 5036 KB Output is correct
10 Correct 3 ms 4948 KB Output is correct
11 Correct 3 ms 4924 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5032 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 5028 KB Output is correct
20 Correct 3 ms 5028 KB Output is correct
21 Correct 3 ms 5028 KB Output is correct
22 Correct 3 ms 5076 KB Output is correct
23 Correct 3 ms 5076 KB Output is correct
24 Correct 3 ms 5076 KB Output is correct
25 Correct 5 ms 5076 KB Output is correct
26 Correct 4 ms 5076 KB Output is correct
27 Correct 4 ms 5040 KB Output is correct
28 Correct 4 ms 5036 KB Output is correct
29 Correct 4 ms 5204 KB Output is correct
30 Correct 4 ms 5204 KB Output is correct
31 Correct 4 ms 5040 KB Output is correct
32 Correct 3 ms 5076 KB Output is correct
33 Correct 4 ms 5032 KB Output is correct
34 Correct 3 ms 5076 KB Output is correct
35 Correct 4 ms 5076 KB Output is correct
36 Correct 4 ms 5112 KB Output is correct
37 Correct 4 ms 5076 KB Output is correct
38 Correct 4 ms 5040 KB Output is correct
39 Correct 4 ms 5136 KB Output is correct
40 Correct 5 ms 5076 KB Output is correct
41 Correct 4 ms 5164 KB Output is correct
42 Correct 3 ms 5076 KB Output is correct
43 Correct 3 ms 5076 KB Output is correct
44 Correct 3 ms 5040 KB Output is correct
45 Correct 4 ms 5044 KB Output is correct
46 Correct 4 ms 5076 KB Output is correct
47 Correct 3 ms 5040 KB Output is correct
48 Correct 4 ms 5220 KB Output is correct
49 Correct 5 ms 5204 KB Output is correct
50 Correct 4 ms 5080 KB Output is correct
51 Correct 4 ms 5036 KB Output is correct
52 Correct 3 ms 5036 KB Output is correct
53 Correct 3 ms 5040 KB Output is correct
54 Correct 3 ms 5076 KB Output is correct
55 Correct 4 ms 5032 KB Output is correct
56 Correct 3 ms 5076 KB Output is correct
57 Correct 3 ms 5216 KB Output is correct
58 Correct 4 ms 5076 KB Output is correct
59 Correct 4 ms 5076 KB Output is correct
60 Correct 4 ms 5076 KB Output is correct
61 Correct 3 ms 5076 KB Output is correct
62 Correct 4 ms 5204 KB Output is correct
63 Correct 4 ms 5076 KB Output is correct
64 Correct 121 ms 14456 KB Output is correct
65 Correct 116 ms 14448 KB Output is correct
66 Correct 127 ms 14512 KB Output is correct
67 Correct 119 ms 14472 KB Output is correct
68 Correct 120 ms 14480 KB Output is correct
69 Correct 122 ms 14460 KB Output is correct
70 Correct 121 ms 14472 KB Output is correct
71 Correct 119 ms 14416 KB Output is correct
72 Correct 120 ms 14484 KB Output is correct
73 Correct 141 ms 29728 KB Output is correct
74 Correct 136 ms 29492 KB Output is correct
75 Correct 115 ms 14388 KB Output is correct
76 Correct 116 ms 14376 KB Output is correct
77 Correct 121 ms 14440 KB Output is correct
78 Correct 118 ms 14432 KB Output is correct
79 Correct 122 ms 14440 KB Output is correct
80 Correct 113 ms 14456 KB Output is correct
81 Correct 97 ms 16180 KB Output is correct
82 Correct 111 ms 15052 KB Output is correct
83 Correct 121 ms 20952 KB Output is correct
84 Correct 131 ms 23708 KB Output is correct
85 Correct 131 ms 23316 KB Output is correct
86 Correct 121 ms 16116 KB Output is correct
87 Correct 119 ms 15272 KB Output is correct
88 Correct 111 ms 15728 KB Output is correct
89 Correct 107 ms 15756 KB Output is correct
90 Correct 107 ms 15464 KB Output is correct
91 Correct 110 ms 15852 KB Output is correct
92 Correct 103 ms 16224 KB Output is correct
93 Correct 111 ms 19712 KB Output is correct
94 Correct 111 ms 21656 KB Output is correct
95 Correct 103 ms 20040 KB Output is correct
96 Correct 105 ms 17640 KB Output is correct
97 Correct 97 ms 15532 KB Output is correct
98 Correct 110 ms 14940 KB Output is correct
99 Correct 113 ms 14868 KB Output is correct
100 Correct 109 ms 18924 KB Output is correct
101 Correct 110 ms 16144 KB Output is correct
102 Correct 100 ms 15196 KB Output is correct
103 Correct 108 ms 15012 KB Output is correct
104 Correct 64 ms 18236 KB Output is correct
105 Correct 130 ms 25700 KB Output is correct
106 Correct 68 ms 17928 KB Output is correct
107 Correct 63 ms 18032 KB Output is correct
108 Correct 130 ms 30428 KB Output is correct
109 Correct 64 ms 18232 KB Output is correct
110 Correct 155 ms 30788 KB Output is correct
111 Correct 123 ms 14400 KB Output is correct