oj.uz

Submission #496712

# Submission time Handle Problem Language Result Execution time Memory
496712 2021-12-22T02:31:29 Z maomao90 Power Plant (JOI20_power) C++17
100 / 100
 194 ms 29508 KB 
// She will give birth to a son, and you are to give him the name Jesus,
// because he will save his people from their sins.
// Matthew 1:21
#include <bits/stdc++.h> 
using namespace std;

template <class T>
inline bool mnto(T& a, T b) {return a > b ? a = b, 1 : 0;}
template <class T>
inline bool mxto(T& a, T b) {return a < b ? a = b, 1: 0;}
#define REP(i, s, e) for (int i = s; i < e; i++)
#define RREP(i, s, e) for (int i = s; i >= e; i--)
typedef long long ll;
typedef long double ld;
#define MP make_pair
#define FI first
#define SE second
typedef pair<int, int> ii;
typedef pair<ll, ll> pll;
#define MT make_tuple
typedef tuple<int, int, int> iii;
#define ALL(_a) _a.begin(), _a.end()
#define pb push_back
typedef vector<int> vi;
typedef vector<ll> vll;
typedef vector<ii> vii;

#ifdef DEBUG
#define debug(args...) printf(args)
#else
#define debug(args...)
#endif

#define INF 1000000005
#define LINF 1000000000000000005
#define MOD 1000000007
#define MAXN 200005

int n;
vi adj[MAXN];
char s[MAXN];

int memo[MAXN][2];
int dfs(int u, bool take, int p) {
	if (memo[u][take] != -1) {
		return memo[u][take];
	}
	int res = s[u] == '1';
	int cur = 0;
	for (int v : adj[u]) {
		if (v == p) continue;
		cur += dfs(v, 1, u);
	}
	cur -= s[u] == '1';
	mxto(res, cur);
	if (s[u] == '1' && !take) {
		for (int v : adj[u]) {
			if (v == p) continue;
			mxto(res, 1 + dfs(v, 1, u));
		}
	}
	if (!take) {
		for (int v : adj[u]) {
			if (v == p) continue;
			mxto(res, dfs(v, 0, u));
		}
	}
	return memo[u][take] = res;
}

int main() {
	int _t = 1;
   	//scanf("%d", &_t);
	while (_t--) {
		scanf("%d", &n);
		REP (i, 1, n) {
			int a, b; scanf("%d%d", &a, &b);
			adj[a].pb(b);
			adj[b].pb(a);
		}
		scanf(" %s", s + 1);
		memset(memo, -1, sizeof memo);
		printf("%d\n", dfs(1, 0, -1));
	}
	return 0;
}

Compilation message

power.cpp: In function 'int main()':
power.cpp:76:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   76 |   scanf("%d", &n);
      |   ~~~~~^~~~~~~~~~
power.cpp:78:19: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   78 |    int a, b; scanf("%d%d", &a, &b);
      |              ~~~~~^~~~~~~~~~~~~~~~
power.cpp:82:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   82 |   scanf(" %s", s + 1);
      |   ~~~~~^~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6568 KB Output is correct
2 Correct 3 ms 6476 KB Output is correct
3 Correct 3 ms 6476 KB Output is correct
4 Correct 3 ms 6476 KB Output is correct
5 Correct 3 ms 6476 KB Output is correct
6 Correct 3 ms 6476 KB Output is correct
7 Correct 3 ms 6476 KB Output is correct
8 Correct 3 ms 6476 KB Output is correct
9 Correct 3 ms 6476 KB Output is correct
10 Correct 3 ms 6476 KB Output is correct
11 Correct 3 ms 6476 KB Output is correct
12 Correct 3 ms 6476 KB Output is correct
13 Correct 3 ms 6476 KB Output is correct
14 Correct 4 ms 6476 KB Output is correct
15 Correct 3 ms 6476 KB Output is correct
16 Correct 3 ms 6476 KB Output is correct
17 Correct 3 ms 6476 KB Output is correct
18 Correct 3 ms 6540 KB Output is correct
19 Correct 3 ms 6476 KB Output is correct
20 Correct 3 ms 6476 KB Output is correct
21 Correct 3 ms 6476 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6568 KB Output is correct
2 Correct 3 ms 6476 KB Output is correct
3 Correct 3 ms 6476 KB Output is correct
4 Correct 3 ms 6476 KB Output is correct
5 Correct 3 ms 6476 KB Output is correct
6 Correct 3 ms 6476 KB Output is correct
7 Correct 3 ms 6476 KB Output is correct
8 Correct 3 ms 6476 KB Output is correct
9 Correct 3 ms 6476 KB Output is correct
10 Correct 3 ms 6476 KB Output is correct
11 Correct 3 ms 6476 KB Output is correct
12 Correct 3 ms 6476 KB Output is correct
13 Correct 3 ms 6476 KB Output is correct
14 Correct 4 ms 6476 KB Output is correct
15 Correct 3 ms 6476 KB Output is correct
16 Correct 3 ms 6476 KB Output is correct
17 Correct 3 ms 6476 KB Output is correct
18 Correct 3 ms 6540 KB Output is correct
19 Correct 3 ms 6476 KB Output is correct
20 Correct 3 ms 6476 KB Output is correct
21 Correct 3 ms 6476 KB Output is correct
22 Correct 4 ms 6604 KB Output is correct
23 Correct 4 ms 6604 KB Output is correct
24 Correct 4 ms 6604 KB Output is correct
25 Correct 4 ms 6604 KB Output is correct
26 Correct 4 ms 6604 KB Output is correct
27 Correct 5 ms 6604 KB Output is correct
28 Correct 4 ms 6604 KB Output is correct
29 Correct 4 ms 6732 KB Output is correct
30 Correct 4 ms 6732 KB Output is correct
31 Correct 4 ms 6604 KB Output is correct
32 Correct 4 ms 6604 KB Output is correct
33 Correct 4 ms 6604 KB Output is correct
34 Correct 5 ms 6604 KB Output is correct
35 Correct 4 ms 6604 KB Output is correct
36 Correct 4 ms 6604 KB Output is correct
37 Correct 4 ms 6604 KB Output is correct
38 Correct 4 ms 6604 KB Output is correct
39 Correct 4 ms 6604 KB Output is correct
40 Correct 4 ms 6604 KB Output is correct
41 Correct 4 ms 6604 KB Output is correct
42 Correct 4 ms 6604 KB Output is correct
43 Correct 4 ms 6540 KB Output is correct
44 Correct 4 ms 6580 KB Output is correct
45 Correct 4 ms 6604 KB Output is correct
46 Correct 4 ms 6612 KB Output is correct
47 Correct 4 ms 6612 KB Output is correct
48 Correct 4 ms 6612 KB Output is correct
49 Correct 4 ms 6612 KB Output is correct
50 Correct 4 ms 6612 KB Output is correct
51 Correct 4 ms 6612 KB Output is correct
52 Correct 4 ms 6604 KB Output is correct
53 Correct 4 ms 6556 KB Output is correct
54 Correct 4 ms 6616 KB Output is correct
55 Correct 4 ms 6604 KB Output is correct
56 Correct 4 ms 6604 KB Output is correct
57 Correct 5 ms 6732 KB Output is correct
58 Correct 6 ms 6604 KB Output is correct
59 Correct 4 ms 6604 KB Output is correct
60 Correct 4 ms 6604 KB Output is correct
61 Correct 3 ms 6604 KB Output is correct
62 Correct 4 ms 6732 KB Output is correct
63 Correct 4 ms 6604 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 6568 KB Output is correct
2 Correct 3 ms 6476 KB Output is correct
3 Correct 3 ms 6476 KB Output is correct
4 Correct 3 ms 6476 KB Output is correct
5 Correct 3 ms 6476 KB Output is correct
6 Correct 3 ms 6476 KB Output is correct
7 Correct 3 ms 6476 KB Output is correct
8 Correct 3 ms 6476 KB Output is correct
9 Correct 3 ms 6476 KB Output is correct
10 Correct 3 ms 6476 KB Output is correct
11 Correct 3 ms 6476 KB Output is correct
12 Correct 3 ms 6476 KB Output is correct
13 Correct 3 ms 6476 KB Output is correct
14 Correct 4 ms 6476 KB Output is correct
15 Correct 3 ms 6476 KB Output is correct
16 Correct 3 ms 6476 KB Output is correct
17 Correct 3 ms 6476 KB Output is correct
18 Correct 3 ms 6540 KB Output is correct
19 Correct 3 ms 6476 KB Output is correct
20 Correct 3 ms 6476 KB Output is correct
21 Correct 3 ms 6476 KB Output is correct
22 Correct 4 ms 6604 KB Output is correct
23 Correct 4 ms 6604 KB Output is correct
24 Correct 4 ms 6604 KB Output is correct
25 Correct 4 ms 6604 KB Output is correct
26 Correct 4 ms 6604 KB Output is correct
27 Correct 5 ms 6604 KB Output is correct
28 Correct 4 ms 6604 KB Output is correct
29 Correct 4 ms 6732 KB Output is correct
30 Correct 4 ms 6732 KB Output is correct
31 Correct 4 ms 6604 KB Output is correct
32 Correct 4 ms 6604 KB Output is correct
33 Correct 4 ms 6604 KB Output is correct
34 Correct 5 ms 6604 KB Output is correct
35 Correct 4 ms 6604 KB Output is correct
36 Correct 4 ms 6604 KB Output is correct
37 Correct 4 ms 6604 KB Output is correct
38 Correct 4 ms 6604 KB Output is correct
39 Correct 4 ms 6604 KB Output is correct
40 Correct 4 ms 6604 KB Output is correct
41 Correct 4 ms 6604 KB Output is correct
42 Correct 4 ms 6604 KB Output is correct
43 Correct 4 ms 6540 KB Output is correct
44 Correct 4 ms 6580 KB Output is correct
45 Correct 4 ms 6604 KB Output is correct
46 Correct 4 ms 6612 KB Output is correct
47 Correct 4 ms 6612 KB Output is correct
48 Correct 4 ms 6612 KB Output is correct
49 Correct 4 ms 6612 KB Output is correct
50 Correct 4 ms 6612 KB Output is correct
51 Correct 4 ms 6612 KB Output is correct
52 Correct 4 ms 6604 KB Output is correct
53 Correct 4 ms 6556 KB Output is correct
54 Correct 4 ms 6616 KB Output is correct
55 Correct 4 ms 6604 KB Output is correct
56 Correct 4 ms 6604 KB Output is correct
57 Correct 5 ms 6732 KB Output is correct
58 Correct 6 ms 6604 KB Output is correct
59 Correct 4 ms 6604 KB Output is correct
60 Correct 4 ms 6604 KB Output is correct
61 Correct 3 ms 6604 KB Output is correct
62 Correct 4 ms 6732 KB Output is correct
63 Correct 4 ms 6604 KB Output is correct
64 Correct 148 ms 13116 KB Output is correct
65 Correct 157 ms 13088 KB Output is correct
66 Correct 160 ms 13308 KB Output is correct
67 Correct 161 ms 13112 KB Output is correct
68 Correct 144 ms 13064 KB Output is correct
69 Correct 149 ms 13108 KB Output is correct
70 Correct 163 ms 13140 KB Output is correct
71 Correct 144 ms 13076 KB Output is correct
72 Correct 153 ms 13124 KB Output is correct
73 Correct 194 ms 28264 KB Output is correct
74 Correct 194 ms 28204 KB Output is correct
75 Correct 189 ms 12892 KB Output is correct
76 Correct 163 ms 12996 KB Output is correct
77 Correct 168 ms 12988 KB Output is correct
78 Correct 153 ms 12980 KB Output is correct
79 Correct 171 ms 12884 KB Output is correct
80 Correct 157 ms 12996 KB Output is correct
81 Correct 128 ms 13456 KB Output is correct
82 Correct 132 ms 13156 KB Output is correct
83 Correct 168 ms 19248 KB Output is correct
84 Correct 170 ms 21808 KB Output is correct
85 Correct 183 ms 21444 KB Output is correct
86 Correct 148 ms 14696 KB Output is correct
87 Correct 153 ms 13924 KB Output is correct
88 Correct 143 ms 14460 KB Output is correct
89 Correct 161 ms 14600 KB Output is correct
90 Correct 156 ms 14228 KB Output is correct
91 Correct 141 ms 14436 KB Output is correct
92 Correct 141 ms 14788 KB Output is correct
93 Correct 155 ms 18064 KB Output is correct
94 Correct 134 ms 19900 KB Output is correct
95 Correct 148 ms 18296 KB Output is correct
96 Correct 140 ms 16068 KB Output is correct
97 Correct 145 ms 14404 KB Output is correct
98 Correct 142 ms 13640 KB Output is correct
99 Correct 144 ms 13356 KB Output is correct
100 Correct 145 ms 17168 KB Output is correct
101 Correct 159 ms 14772 KB Output is correct
102 Correct 145 ms 13868 KB Output is correct
103 Correct 145 ms 13676 KB Output is correct
104 Correct 81 ms 13752 KB Output is correct
105 Correct 185 ms 24440 KB Output is correct
106 Correct 88 ms 13784 KB Output is correct
107 Correct 83 ms 13736 KB Output is correct
108 Correct 179 ms 29068 KB Output is correct
109 Correct 81 ms 13712 KB Output is correct
110 Correct 177 ms 29508 KB Output is correct
111 Correct 135 ms 12960 KB Output is correct