oj.uz

Submission #763090

# Submission time Handle Problem Language Result Execution time Memory
763090 2023-06-22T03:24:32 Z trucmai Power Plant (JOI20_power) C++17
100 / 100
 128 ms 45540 KB 
//#i_love_aisukiuwu#9998

#include <bits/stdc++.h>
using namespace std;

void open(){
  if(fopen("i.inp","r")){
    freopen("i.inp","r",stdin);
    freopen("o.out","w",stdout);
  }
}

#define ll long long
#define all(a) (a).begin(), (a).end()
#define vi vector<ll>
#define pi pair<ll,ll>
#define pii pair<ll,pair<ll,ll>>
#define fi first
#define se second
#define gcd __gcd
#define mset(a,v) memset(a, v, sizeof(a))
#define endl '\n'
#define spc " "

const int MN1 = 1e6 + 5,MN2 = 1e4 + 5,LOG = 27;
const ll MOD = 1e9 + 7,INF = 1e9;
ll n,dp[MN1],res = -INF;
bool power[MN1]; 
vector<ll>adj[MN1];
//dp[u] la max profit tai subtree u
//dp[u] = max(power[u],sum_{v = G[u]} dp[v] - power[u]) 

void dfs(ll u,ll pre){
	ll sum = 0,mx = 0;
	dp[u] = 1;
	for(ll v : adj[u]){
		if(v == pre) continue;
		dfs(v,u);
		sum += dp[v];
		mx = max(mx,dp[v]);
	}
	dp[u] = max((ll)power[u],sum - power[u]);
	res = max({res,sum - power[u],mx + power[u]});
}

void solve(){
	cin>>n;
	for(ll i = 1;i < n;++i){
		ll u,v;cin>>u>>v;
		adj[u].push_back(v);
		adj[v].push_back(u);
	}
	for(ll i = 1;i <= n;++i){
		char c; cin>>c; 
		power[i] = (c == '1');
	}
	dfs(1,1);
	cout<<res;
}

signed main(){
  cin.tie(0) -> sync_with_stdio(0);
  open();
  ll t = 1; //cin>>t;
  while(t--) solve(); 
  cerr << "\n" << "Time elapsed: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
}

Compilation message

power.cpp: In function 'void open()':
power.cpp:8:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    8 |     freopen("i.inp","r",stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~
power.cpp:9:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |     freopen("o.out","w",stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23712 KB Output is correct
2 Correct 12 ms 23700 KB Output is correct
3 Correct 12 ms 23764 KB Output is correct
4 Correct 11 ms 23812 KB Output is correct
5 Correct 11 ms 23764 KB Output is correct
6 Correct 12 ms 23764 KB Output is correct
7 Correct 11 ms 23756 KB Output is correct
8 Correct 11 ms 23816 KB Output is correct
9 Correct 11 ms 23764 KB Output is correct
10 Correct 11 ms 23764 KB Output is correct
11 Correct 13 ms 23784 KB Output is correct
12 Correct 11 ms 23764 KB Output is correct
13 Correct 10 ms 23764 KB Output is correct
14 Correct 11 ms 23764 KB Output is correct
15 Correct 11 ms 23764 KB Output is correct
16 Correct 12 ms 23808 KB Output is correct
17 Correct 11 ms 23752 KB Output is correct
18 Correct 12 ms 23756 KB Output is correct
19 Correct 11 ms 23764 KB Output is correct
20 Correct 12 ms 23724 KB Output is correct
21 Correct 11 ms 23752 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23712 KB Output is correct
2 Correct 12 ms 23700 KB Output is correct
3 Correct 12 ms 23764 KB Output is correct
4 Correct 11 ms 23812 KB Output is correct
5 Correct 11 ms 23764 KB Output is correct
6 Correct 12 ms 23764 KB Output is correct
7 Correct 11 ms 23756 KB Output is correct
8 Correct 11 ms 23816 KB Output is correct
9 Correct 11 ms 23764 KB Output is correct
10 Correct 11 ms 23764 KB Output is correct
11 Correct 13 ms 23784 KB Output is correct
12 Correct 11 ms 23764 KB Output is correct
13 Correct 10 ms 23764 KB Output is correct
14 Correct 11 ms 23764 KB Output is correct
15 Correct 11 ms 23764 KB Output is correct
16 Correct 12 ms 23808 KB Output is correct
17 Correct 11 ms 23752 KB Output is correct
18 Correct 12 ms 23756 KB Output is correct
19 Correct 11 ms 23764 KB Output is correct
20 Correct 12 ms 23724 KB Output is correct
21 Correct 11 ms 23752 KB Output is correct
22 Correct 11 ms 23868 KB Output is correct
23 Correct 11 ms 23844 KB Output is correct
24 Correct 11 ms 23892 KB Output is correct
25 Correct 12 ms 23828 KB Output is correct
26 Correct 11 ms 23832 KB Output is correct
27 Correct 12 ms 23788 KB Output is correct
28 Correct 12 ms 23892 KB Output is correct
29 Correct 12 ms 24020 KB Output is correct
30 Correct 12 ms 23892 KB Output is correct
31 Correct 14 ms 23892 KB Output is correct
32 Correct 11 ms 23892 KB Output is correct
33 Correct 12 ms 23888 KB Output is correct
34 Correct 12 ms 23792 KB Output is correct
35 Correct 12 ms 23892 KB Output is correct
36 Correct 12 ms 23892 KB Output is correct
37 Correct 11 ms 23892 KB Output is correct
38 Correct 12 ms 23860 KB Output is correct
39 Correct 11 ms 23892 KB Output is correct
40 Correct 12 ms 23892 KB Output is correct
41 Correct 12 ms 23860 KB Output is correct
42 Correct 13 ms 23860 KB Output is correct
43 Correct 12 ms 23892 KB Output is correct
44 Correct 12 ms 23892 KB Output is correct
45 Correct 12 ms 23892 KB Output is correct
46 Correct 12 ms 23892 KB Output is correct
47 Correct 13 ms 23892 KB Output is correct
48 Correct 11 ms 23864 KB Output is correct
49 Correct 13 ms 23988 KB Output is correct
50 Correct 12 ms 23824 KB Output is correct
51 Correct 14 ms 23892 KB Output is correct
52 Correct 13 ms 23888 KB Output is correct
53 Correct 12 ms 23892 KB Output is correct
54 Correct 13 ms 23892 KB Output is correct
55 Correct 12 ms 23892 KB Output is correct
56 Correct 12 ms 23892 KB Output is correct
57 Correct 12 ms 24020 KB Output is correct
58 Correct 12 ms 23872 KB Output is correct
59 Correct 11 ms 23892 KB Output is correct
60 Correct 13 ms 23892 KB Output is correct
61 Correct 12 ms 23892 KB Output is correct
62 Correct 12 ms 23892 KB Output is correct
63 Correct 12 ms 23808 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 23712 KB Output is correct
2 Correct 12 ms 23700 KB Output is correct
3 Correct 12 ms 23764 KB Output is correct
4 Correct 11 ms 23812 KB Output is correct
5 Correct 11 ms 23764 KB Output is correct
6 Correct 12 ms 23764 KB Output is correct
7 Correct 11 ms 23756 KB Output is correct
8 Correct 11 ms 23816 KB Output is correct
9 Correct 11 ms 23764 KB Output is correct
10 Correct 11 ms 23764 KB Output is correct
11 Correct 13 ms 23784 KB Output is correct
12 Correct 11 ms 23764 KB Output is correct
13 Correct 10 ms 23764 KB Output is correct
14 Correct 11 ms 23764 KB Output is correct
15 Correct 11 ms 23764 KB Output is correct
16 Correct 12 ms 23808 KB Output is correct
17 Correct 11 ms 23752 KB Output is correct
18 Correct 12 ms 23756 KB Output is correct
19 Correct 11 ms 23764 KB Output is correct
20 Correct 12 ms 23724 KB Output is correct
21 Correct 11 ms 23752 KB Output is correct
22 Correct 11 ms 23868 KB Output is correct
23 Correct 11 ms 23844 KB Output is correct
24 Correct 11 ms 23892 KB Output is correct
25 Correct 12 ms 23828 KB Output is correct
26 Correct 11 ms 23832 KB Output is correct
27 Correct 12 ms 23788 KB Output is correct
28 Correct 12 ms 23892 KB Output is correct
29 Correct 12 ms 24020 KB Output is correct
30 Correct 12 ms 23892 KB Output is correct
31 Correct 14 ms 23892 KB Output is correct
32 Correct 11 ms 23892 KB Output is correct
33 Correct 12 ms 23888 KB Output is correct
34 Correct 12 ms 23792 KB Output is correct
35 Correct 12 ms 23892 KB Output is correct
36 Correct 12 ms 23892 KB Output is correct
37 Correct 11 ms 23892 KB Output is correct
38 Correct 12 ms 23860 KB Output is correct
39 Correct 11 ms 23892 KB Output is correct
40 Correct 12 ms 23892 KB Output is correct
41 Correct 12 ms 23860 KB Output is correct
42 Correct 13 ms 23860 KB Output is correct
43 Correct 12 ms 23892 KB Output is correct
44 Correct 12 ms 23892 KB Output is correct
45 Correct 12 ms 23892 KB Output is correct
46 Correct 12 ms 23892 KB Output is correct
47 Correct 13 ms 23892 KB Output is correct
48 Correct 11 ms 23864 KB Output is correct
49 Correct 13 ms 23988 KB Output is correct
50 Correct 12 ms 23824 KB Output is correct
51 Correct 14 ms 23892 KB Output is correct
52 Correct 13 ms 23888 KB Output is correct
53 Correct 12 ms 23892 KB Output is correct
54 Correct 13 ms 23892 KB Output is correct
55 Correct 12 ms 23892 KB Output is correct
56 Correct 12 ms 23892 KB Output is correct
57 Correct 12 ms 24020 KB Output is correct
58 Correct 12 ms 23872 KB Output is correct
59 Correct 11 ms 23892 KB Output is correct
60 Correct 13 ms 23892 KB Output is correct
61 Correct 12 ms 23892 KB Output is correct
62 Correct 12 ms 23892 KB Output is correct
63 Correct 12 ms 23808 KB Output is correct
64 Correct 82 ms 32788 KB Output is correct
65 Correct 93 ms 32844 KB Output is correct
66 Correct 86 ms 32856 KB Output is correct
67 Correct 81 ms 32816 KB Output is correct
68 Correct 99 ms 32940 KB Output is correct
69 Correct 84 ms 32892 KB Output is correct
70 Correct 85 ms 32788 KB Output is correct
71 Correct 86 ms 32844 KB Output is correct
72 Correct 82 ms 32912 KB Output is correct
73 Correct 102 ms 44500 KB Output is correct
74 Correct 103 ms 44492 KB Output is correct
75 Correct 95 ms 34164 KB Output is correct
76 Correct 85 ms 34148 KB Output is correct
77 Correct 89 ms 32824 KB Output is correct
78 Correct 84 ms 32816 KB Output is correct
79 Correct 85 ms 32868 KB Output is correct
80 Correct 83 ms 32804 KB Output is correct
81 Correct 74 ms 32932 KB Output is correct
82 Correct 78 ms 32760 KB Output is correct
83 Correct 91 ms 37920 KB Output is correct
84 Correct 117 ms 40016 KB Output is correct
85 Correct 103 ms 39748 KB Output is correct
86 Correct 89 ms 34252 KB Output is correct
87 Correct 83 ms 33676 KB Output is correct
88 Correct 107 ms 33680 KB Output is correct
89 Correct 104 ms 33844 KB Output is correct
90 Correct 81 ms 33600 KB Output is correct
91 Correct 85 ms 33740 KB Output is correct
92 Correct 87 ms 34124 KB Output is correct
93 Correct 83 ms 36296 KB Output is correct
94 Correct 103 ms 38172 KB Output is correct
95 Correct 93 ms 36608 KB Output is correct
96 Correct 112 ms 34848 KB Output is correct
97 Correct 85 ms 33416 KB Output is correct
98 Correct 82 ms 32996 KB Output is correct
99 Correct 86 ms 32972 KB Output is correct
100 Correct 97 ms 35828 KB Output is correct
101 Correct 82 ms 33756 KB Output is correct
102 Correct 82 ms 33108 KB Output is correct
103 Correct 97 ms 33108 KB Output is correct
104 Correct 62 ms 33336 KB Output is correct
105 Correct 121 ms 41368 KB Output is correct
106 Correct 61 ms 33344 KB Output is correct
107 Correct 61 ms 33340 KB Output is correct
108 Correct 128 ms 45280 KB Output is correct
109 Correct 61 ms 33372 KB Output is correct
110 Correct 105 ms 45540 KB Output is correct
111 Correct 101 ms 32932 KB Output is correct