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답안 #763352

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
763352 2023-06-22T08:33:36 Z vjudge1 Power Plant (JOI20_power) C++17
100 / 100
 131 ms 27272 KB 
#include<bits/stdc++.h>
using namespace std;

#define taskname "template"
#define ll long long
#define ld double
#define fi first
#define se second
#define vi vector<int>
#define pii pair<int,int> 
#define vii vector<pii>
#define vvi vector<vi>
#define pb push_back
#define eb emplace_back

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

const int MN=2e5+5;

int n;
int a,b;
string s;
vi son[MN];
pii dp[MN];
int ans;

void dfs(int u,int par){
    int cnt=0,max1=0;
    for(int v:son[u]){
        if(v==par) continue;
        dfs(v,u);
        dp[u].fi+=dp[v].fi;
        max1=max(max1,dp[v].fi);
    }
    ans=max({ans,max1+(s[u]=='1'),dp[u].fi-(s[u]=='1')});
    dp[u].fi = max(dp[u].fi - (s[u] == '1'), (s[u] - '0'));
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    /*
    freopen(taskname".inp","r",stdin);
    freopen(taskname".out","w",stdout);
    */
    cin>>n;
    for(int i=1;i<n;++i){
        cin>>a>>b;
        son[a].eb(b); son[b].eb(a);
    }
    
    cin>>s;
    s='#'+s;
    dfs(1,0);
    
    // for(int i=1;i<=n;++i){
    //     cout<<"Case "<<i<<": "<<dp[i].fi<<'\n';
    // }
    cout<<ans<<'\n';
}

Compilation message

power.cpp: In function 'void dfs(int, int)':
power.cpp:28:9: warning: unused variable 'cnt' [-Wunused-variable]
   28 |     int cnt=0,max1=0;
      |         ^~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 5028 KB Output is correct
4 Correct 2 ms 5024 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 5028 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4928 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 5028 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 5028 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 5024 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 3 ms 5004 KB Output is correct
21 Correct 2 ms 5028 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 5028 KB Output is correct
4 Correct 2 ms 5024 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 5028 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4928 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 5028 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 5028 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 5024 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 3 ms 5004 KB Output is correct
21 Correct 2 ms 5028 KB Output is correct
22 Correct 3 ms 5048 KB Output is correct
23 Correct 3 ms 5040 KB Output is correct
24 Correct 3 ms 5068 KB Output is correct
25 Correct 3 ms 5076 KB Output is correct
26 Correct 4 ms 5040 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 3 ms 5004 KB Output is correct
29 Correct 3 ms 5152 KB Output is correct
30 Correct 3 ms 5204 KB Output is correct
31 Correct 3 ms 5036 KB Output is correct
32 Correct 3 ms 5088 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 3 ms 5120 KB Output is correct
35 Correct 4 ms 5040 KB Output is correct
36 Correct 3 ms 5076 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 3 ms 5044 KB Output is correct
39 Correct 3 ms 5076 KB Output is correct
40 Correct 3 ms 5168 KB Output is correct
41 Correct 3 ms 5076 KB Output is correct
42 Correct 3 ms 5040 KB Output is correct
43 Correct 3 ms 5052 KB Output is correct
44 Correct 3 ms 5076 KB Output is correct
45 Correct 3 ms 5076 KB Output is correct
46 Correct 3 ms 5040 KB Output is correct
47 Correct 3 ms 5076 KB Output is correct
48 Correct 3 ms 5204 KB Output is correct
49 Correct 3 ms 5164 KB Output is correct
50 Correct 3 ms 5168 KB Output is correct
51 Correct 3 ms 5164 KB Output is correct
52 Correct 4 ms 5172 KB Output is correct
53 Correct 3 ms 5076 KB Output is correct
54 Correct 3 ms 5044 KB Output is correct
55 Correct 3 ms 5076 KB Output is correct
56 Correct 3 ms 5076 KB Output is correct
57 Correct 3 ms 5176 KB Output is correct
58 Correct 3 ms 5040 KB Output is correct
59 Correct 3 ms 5076 KB Output is correct
60 Correct 3 ms 5204 KB Output is correct
61 Correct 3 ms 5076 KB Output is correct
62 Correct 3 ms 5204 KB Output is correct
63 Correct 3 ms 5076 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 2 ms 4948 KB Output is correct
3 Correct 3 ms 5028 KB Output is correct
4 Correct 2 ms 5024 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 2 ms 5028 KB Output is correct
9 Correct 3 ms 4948 KB Output is correct
10 Correct 2 ms 4928 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 5028 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 5028 KB Output is correct
15 Correct 2 ms 4948 KB Output is correct
16 Correct 2 ms 4948 KB Output is correct
17 Correct 2 ms 5024 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 2 ms 4948 KB Output is correct
20 Correct 3 ms 5004 KB Output is correct
21 Correct 2 ms 5028 KB Output is correct
22 Correct 3 ms 5048 KB Output is correct
23 Correct 3 ms 5040 KB Output is correct
24 Correct 3 ms 5068 KB Output is correct
25 Correct 3 ms 5076 KB Output is correct
26 Correct 4 ms 5040 KB Output is correct
27 Correct 3 ms 5076 KB Output is correct
28 Correct 3 ms 5004 KB Output is correct
29 Correct 3 ms 5152 KB Output is correct
30 Correct 3 ms 5204 KB Output is correct
31 Correct 3 ms 5036 KB Output is correct
32 Correct 3 ms 5088 KB Output is correct
33 Correct 3 ms 5076 KB Output is correct
34 Correct 3 ms 5120 KB Output is correct
35 Correct 4 ms 5040 KB Output is correct
36 Correct 3 ms 5076 KB Output is correct
37 Correct 3 ms 5076 KB Output is correct
38 Correct 3 ms 5044 KB Output is correct
39 Correct 3 ms 5076 KB Output is correct
40 Correct 3 ms 5168 KB Output is correct
41 Correct 3 ms 5076 KB Output is correct
42 Correct 3 ms 5040 KB Output is correct
43 Correct 3 ms 5052 KB Output is correct
44 Correct 3 ms 5076 KB Output is correct
45 Correct 3 ms 5076 KB Output is correct
46 Correct 3 ms 5040 KB Output is correct
47 Correct 3 ms 5076 KB Output is correct
48 Correct 3 ms 5204 KB Output is correct
49 Correct 3 ms 5164 KB Output is correct
50 Correct 3 ms 5168 KB Output is correct
51 Correct 3 ms 5164 KB Output is correct
52 Correct 4 ms 5172 KB Output is correct
53 Correct 3 ms 5076 KB Output is correct
54 Correct 3 ms 5044 KB Output is correct
55 Correct 3 ms 5076 KB Output is correct
56 Correct 3 ms 5076 KB Output is correct
57 Correct 3 ms 5176 KB Output is correct
58 Correct 3 ms 5040 KB Output is correct
59 Correct 3 ms 5076 KB Output is correct
60 Correct 3 ms 5204 KB Output is correct
61 Correct 3 ms 5076 KB Output is correct
62 Correct 3 ms 5204 KB Output is correct
63 Correct 3 ms 5076 KB Output is correct
64 Correct 104 ms 13620 KB Output is correct
65 Correct 105 ms 13600 KB Output is correct
66 Correct 76 ms 13644 KB Output is correct
67 Correct 76 ms 13600 KB Output is correct
68 Correct 75 ms 13656 KB Output is correct
69 Correct 89 ms 13584 KB Output is correct
70 Correct 108 ms 13608 KB Output is correct
71 Correct 81 ms 13636 KB Output is correct
72 Correct 84 ms 13612 KB Output is correct
73 Correct 107 ms 26180 KB Output is correct
74 Correct 131 ms 26304 KB Output is correct
75 Correct 77 ms 13516 KB Output is correct
76 Correct 70 ms 13460 KB Output is correct
77 Correct 92 ms 13452 KB Output is correct
78 Correct 72 ms 13492 KB Output is correct
79 Correct 76 ms 13672 KB Output is correct
80 Correct 73 ms 13504 KB Output is correct
81 Correct 63 ms 13932 KB Output is correct
82 Correct 100 ms 13728 KB Output is correct
83 Correct 100 ms 18680 KB Output is correct
84 Correct 87 ms 20824 KB Output is correct
85 Correct 85 ms 20560 KB Output is correct
86 Correct 86 ms 14968 KB Output is correct
87 Correct 93 ms 14376 KB Output is correct
88 Correct 83 ms 14892 KB Output is correct
89 Correct 72 ms 14848 KB Output is correct
90 Correct 111 ms 14684 KB Output is correct
91 Correct 74 ms 14872 KB Output is correct
92 Correct 84 ms 15200 KB Output is correct
93 Correct 93 ms 17704 KB Output is correct
94 Correct 82 ms 19432 KB Output is correct
95 Correct 85 ms 18048 KB Output is correct
96 Correct 75 ms 16188 KB Output is correct
97 Correct 79 ms 14744 KB Output is correct
98 Correct 86 ms 14188 KB Output is correct
99 Correct 75 ms 13944 KB Output is correct
100 Correct 69 ms 17200 KB Output is correct
101 Correct 69 ms 15148 KB Output is correct
102 Correct 96 ms 14468 KB Output is correct
103 Correct 69 ms 14168 KB Output is correct
104 Correct 52 ms 14524 KB Output is correct
105 Correct 88 ms 23024 KB Output is correct
106 Correct 57 ms 14404 KB Output is correct
107 Correct 59 ms 14452 KB Output is correct
108 Correct 91 ms 26968 KB Output is correct
109 Correct 52 ms 14540 KB Output is correct
110 Correct 85 ms 27272 KB Output is correct
111 Correct 85 ms 13604 KB Output is correct