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Submission #908486

# Submission time Handle Problem Language Result Execution time Memory
908486 2024-01-16T12:50:14 Z arashMLG Power Plant (JOI20_power) C++17
100 / 100
 222 ms 42556 KB 
#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll>   pll;

const int N = 5e5 + 23;
const ll inf = 1e18;

#define F                  first
#define S                  second
#define pb	               push_back
#define sz(x)              ((int)x.size())
#define kill(x)            cout<<x , exit(0);
#define all(x)             x.begin(),x.end()
#define lc                 (v<<1)
#define rc                 ((v<<1)|1)
#define debug(x)           cerr<< #x << " : " << x << '\n';
#define int               	ll

int n;
int dp[N][2];
vector<int> G[N];
bool is[N];

void dfs(int v,int p=-1) {
	int sum0 = 0,sum1 = 0,mx1=0,mx0=0;
	for(int u : G[v]) if(u != p) {
		dfs(u,v);
		sum0 += dp[u][0];
		sum1 += dp[u][1];
		mx1= max(mx1,dp[u][1]);
		mx0=max(mx0,dp[u][0]);
	}
	
	if(is[v]) {
		dp[v][0] = max({mx0,sum1- 1,1 + mx1});
	} else {
		dp[v][0] = max({mx0,sum1});
	}
	if(is[v]) {
		dp[v][1] = max({1LL,sum1-1});
	} else {
		dp[v][1] = sum1;
	}
	
}

int32_t main() {
	cin>>n;
	for(int i = 1; i< n ; i++) {
		int v,u; cin>>v>>u;
		G[v].pb(u);
		G[u].pb(v);
	}
	for(int i = 1; i <= n ; i++) {
		char c; cin>>c;
		is[i] = (c == '1');
	}
	int ans =0;
	dfs(1);
	cout<<dp[1][0] << '\n';
	return 0;
}

Compilation message

power.cpp: In function 'int32_t main()':
power.cpp:61:6: warning: unused variable 'ans' [-Wunused-variable]
   61 |  int ans =0;
      |      ^~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12632 KB Output is correct
2 Correct 3 ms 12636 KB Output is correct
3 Correct 3 ms 12888 KB Output is correct
4 Correct 4 ms 12752 KB Output is correct
5 Correct 4 ms 12636 KB Output is correct
6 Correct 4 ms 12636 KB Output is correct
7 Correct 3 ms 12888 KB Output is correct
8 Correct 5 ms 13140 KB Output is correct
9 Correct 3 ms 12636 KB Output is correct
10 Correct 3 ms 12636 KB Output is correct
11 Correct 4 ms 12636 KB Output is correct
12 Correct 4 ms 12632 KB Output is correct
13 Correct 3 ms 12632 KB Output is correct
14 Correct 3 ms 12636 KB Output is correct
15 Correct 4 ms 12692 KB Output is correct
16 Correct 3 ms 12636 KB Output is correct
17 Correct 4 ms 12636 KB Output is correct
18 Correct 3 ms 12636 KB Output is correct
19 Correct 4 ms 12632 KB Output is correct
20 Correct 4 ms 12632 KB Output is correct
21 Correct 4 ms 12636 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12632 KB Output is correct
2 Correct 3 ms 12636 KB Output is correct
3 Correct 3 ms 12888 KB Output is correct
4 Correct 4 ms 12752 KB Output is correct
5 Correct 4 ms 12636 KB Output is correct
6 Correct 4 ms 12636 KB Output is correct
7 Correct 3 ms 12888 KB Output is correct
8 Correct 5 ms 13140 KB Output is correct
9 Correct 3 ms 12636 KB Output is correct
10 Correct 3 ms 12636 KB Output is correct
11 Correct 4 ms 12636 KB Output is correct
12 Correct 4 ms 12632 KB Output is correct
13 Correct 3 ms 12632 KB Output is correct
14 Correct 3 ms 12636 KB Output is correct
15 Correct 4 ms 12692 KB Output is correct
16 Correct 3 ms 12636 KB Output is correct
17 Correct 4 ms 12636 KB Output is correct
18 Correct 3 ms 12636 KB Output is correct
19 Correct 4 ms 12632 KB Output is correct
20 Correct 4 ms 12632 KB Output is correct
21 Correct 4 ms 12636 KB Output is correct
22 Correct 4 ms 12636 KB Output is correct
23 Correct 5 ms 12636 KB Output is correct
24 Correct 6 ms 12636 KB Output is correct
25 Correct 4 ms 12636 KB Output is correct
26 Correct 5 ms 12636 KB Output is correct
27 Correct 6 ms 12740 KB Output is correct
28 Correct 4 ms 12636 KB Output is correct
29 Correct 7 ms 13144 KB Output is correct
30 Correct 5 ms 12888 KB Output is correct
31 Correct 4 ms 12636 KB Output is correct
32 Correct 4 ms 12636 KB Output is correct
33 Correct 4 ms 12636 KB Output is correct
34 Correct 5 ms 12892 KB Output is correct
35 Correct 5 ms 12724 KB Output is correct
36 Correct 5 ms 12636 KB Output is correct
37 Correct 4 ms 12636 KB Output is correct
38 Correct 5 ms 12636 KB Output is correct
39 Correct 5 ms 12892 KB Output is correct
40 Correct 4 ms 12892 KB Output is correct
41 Correct 4 ms 12892 KB Output is correct
42 Correct 4 ms 12636 KB Output is correct
43 Correct 6 ms 12632 KB Output is correct
44 Correct 5 ms 12892 KB Output is correct
45 Correct 4 ms 12636 KB Output is correct
46 Correct 5 ms 12704 KB Output is correct
47 Correct 5 ms 12772 KB Output is correct
48 Correct 4 ms 12892 KB Output is correct
49 Correct 4 ms 12892 KB Output is correct
50 Correct 5 ms 12772 KB Output is correct
51 Correct 4 ms 12888 KB Output is correct
52 Correct 4 ms 12636 KB Output is correct
53 Correct 5 ms 12632 KB Output is correct
54 Correct 4 ms 12636 KB Output is correct
55 Correct 4 ms 12724 KB Output is correct
56 Correct 5 ms 12636 KB Output is correct
57 Correct 6 ms 12996 KB Output is correct
58 Correct 4 ms 12636 KB Output is correct
59 Correct 5 ms 12636 KB Output is correct
60 Correct 6 ms 12772 KB Output is correct
61 Correct 4 ms 12636 KB Output is correct
62 Correct 4 ms 12736 KB Output is correct
63 Correct 6 ms 12632 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12632 KB Output is correct
2 Correct 3 ms 12636 KB Output is correct
3 Correct 3 ms 12888 KB Output is correct
4 Correct 4 ms 12752 KB Output is correct
5 Correct 4 ms 12636 KB Output is correct
6 Correct 4 ms 12636 KB Output is correct
7 Correct 3 ms 12888 KB Output is correct
8 Correct 5 ms 13140 KB Output is correct
9 Correct 3 ms 12636 KB Output is correct
10 Correct 3 ms 12636 KB Output is correct
11 Correct 4 ms 12636 KB Output is correct
12 Correct 4 ms 12632 KB Output is correct
13 Correct 3 ms 12632 KB Output is correct
14 Correct 3 ms 12636 KB Output is correct
15 Correct 4 ms 12692 KB Output is correct
16 Correct 3 ms 12636 KB Output is correct
17 Correct 4 ms 12636 KB Output is correct
18 Correct 3 ms 12636 KB Output is correct
19 Correct 4 ms 12632 KB Output is correct
20 Correct 4 ms 12632 KB Output is correct
21 Correct 4 ms 12636 KB Output is correct
22 Correct 4 ms 12636 KB Output is correct
23 Correct 5 ms 12636 KB Output is correct
24 Correct 6 ms 12636 KB Output is correct
25 Correct 4 ms 12636 KB Output is correct
26 Correct 5 ms 12636 KB Output is correct
27 Correct 6 ms 12740 KB Output is correct
28 Correct 4 ms 12636 KB Output is correct
29 Correct 7 ms 13144 KB Output is correct
30 Correct 5 ms 12888 KB Output is correct
31 Correct 4 ms 12636 KB Output is correct
32 Correct 4 ms 12636 KB Output is correct
33 Correct 4 ms 12636 KB Output is correct
34 Correct 5 ms 12892 KB Output is correct
35 Correct 5 ms 12724 KB Output is correct
36 Correct 5 ms 12636 KB Output is correct
37 Correct 4 ms 12636 KB Output is correct
38 Correct 5 ms 12636 KB Output is correct
39 Correct 5 ms 12892 KB Output is correct
40 Correct 4 ms 12892 KB Output is correct
41 Correct 4 ms 12892 KB Output is correct
42 Correct 4 ms 12636 KB Output is correct
43 Correct 6 ms 12632 KB Output is correct
44 Correct 5 ms 12892 KB Output is correct
45 Correct 4 ms 12636 KB Output is correct
46 Correct 5 ms 12704 KB Output is correct
47 Correct 5 ms 12772 KB Output is correct
48 Correct 4 ms 12892 KB Output is correct
49 Correct 4 ms 12892 KB Output is correct
50 Correct 5 ms 12772 KB Output is correct
51 Correct 4 ms 12888 KB Output is correct
52 Correct 4 ms 12636 KB Output is correct
53 Correct 5 ms 12632 KB Output is correct
54 Correct 4 ms 12636 KB Output is correct
55 Correct 4 ms 12724 KB Output is correct
56 Correct 5 ms 12636 KB Output is correct
57 Correct 6 ms 12996 KB Output is correct
58 Correct 4 ms 12636 KB Output is correct
59 Correct 5 ms 12636 KB Output is correct
60 Correct 6 ms 12772 KB Output is correct
61 Correct 4 ms 12636 KB Output is correct
62 Correct 4 ms 12736 KB Output is correct
63 Correct 6 ms 12632 KB Output is correct
64 Correct 187 ms 27540 KB Output is correct
65 Correct 175 ms 26964 KB Output is correct
66 Correct 180 ms 27108 KB Output is correct
67 Correct 172 ms 26960 KB Output is correct
68 Correct 173 ms 26996 KB Output is correct
69 Correct 148 ms 27044 KB Output is correct
70 Correct 145 ms 27048 KB Output is correct
71 Correct 157 ms 27276 KB Output is correct
72 Correct 156 ms 27096 KB Output is correct
73 Correct 216 ms 41272 KB Output is correct
74 Correct 187 ms 41016 KB Output is correct
75 Correct 170 ms 28244 KB Output is correct
76 Correct 201 ms 28240 KB Output is correct
77 Correct 190 ms 26976 KB Output is correct
78 Correct 150 ms 26888 KB Output is correct
79 Correct 216 ms 27024 KB Output is correct
80 Correct 154 ms 27132 KB Output is correct
81 Correct 132 ms 26924 KB Output is correct
82 Correct 173 ms 26968 KB Output is correct
83 Correct 185 ms 33096 KB Output is correct
84 Correct 222 ms 35668 KB Output is correct
85 Correct 193 ms 35320 KB Output is correct
86 Correct 184 ms 28496 KB Output is correct
87 Correct 182 ms 27872 KB Output is correct
88 Correct 189 ms 28292 KB Output is correct
89 Correct 139 ms 27888 KB Output is correct
90 Correct 154 ms 27692 KB Output is correct
91 Correct 164 ms 28232 KB Output is correct
92 Correct 166 ms 28496 KB Output is correct
93 Correct 148 ms 31124 KB Output is correct
94 Correct 162 ms 32968 KB Output is correct
95 Correct 170 ms 31680 KB Output is correct
96 Correct 147 ms 29520 KB Output is correct
97 Correct 167 ms 27724 KB Output is correct
98 Correct 167 ms 27184 KB Output is correct
99 Correct 141 ms 27076 KB Output is correct
100 Correct 159 ms 30588 KB Output is correct
101 Correct 216 ms 28092 KB Output is correct
102 Correct 161 ms 27344 KB Output is correct
103 Correct 170 ms 27388 KB Output is correct
104 Correct 135 ms 28024 KB Output is correct
105 Correct 207 ms 37440 KB Output is correct
106 Correct 121 ms 27492 KB Output is correct
107 Correct 128 ms 27556 KB Output is correct
108 Correct 204 ms 41992 KB Output is correct
109 Correct 130 ms 27476 KB Output is correct
110 Correct 187 ms 42556 KB Output is correct
111 Correct 179 ms 27076 KB Output is correct