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답안 #293186

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
293186 2020-09-07T17:50:25 Z CaroLinda Power Plant (JOI20_power) C++14
100 / 100
 216 ms 27148 KB 
#include <bits/stdc++.h>

#define pb push_back
#define ll long long
#define pii pair<int,int>
#define mk make_pair
#define all(x) x.begin(),x.end()
#define ff first
#define ss second
#define debug printf
#define lp(i,a,b) for(int i = a ; i < b ; i++ )
#define sz(x) (int)(x.size())

const int MAXN = 2e5+10 ;

using namespace std ;

int N ;
int dp[MAXN][2] ;
vector<int> adj[MAXN] ;
bool isPower[MAXN] ;
char str[MAXN] ;

void dfs(int x, int dad)
{

    int mx[2] = {0,0} ;
    int soma1 = 0 ;

    for(auto e : adj[x] )
    {
        if(e == dad) continue ;

        dfs(e,x) ;

        lp(i,0,2) mx[i] = max(mx[i] , dp[e][i]) ;
        soma1 += dp[e][1] ;
    }

    if(!isPower[x])
    {
        dp[x][0] = max( soma1, mx[0] ) ;
        dp[x][1] = soma1 ;
    }
    else
    {
        dp[x][0] = max( mx[1] + 1 , soma1 - 1 ) ;
        dp[x][0] = max( dp[x][0] , mx[0] ) ;

        dp[x][1] = max( 1 , soma1 - 1 ) ;
    }

}

int main()
{
    scanf("%d", &N) ;
    for(int i = 1 , u ,v ; i < N ; i++ )
    {
        scanf("%d%d", &u, &v ) ;

        adj[u].pb(v) ;
        adj[v].pb(u) ;
    }

    scanf("%s", str ) ;
    lp(i,0,N) isPower[i+1] = ( str[i] == '1' ) ;

    dfs(1,-1) ;
    printf("%d\n" , dp[1][0]) ;

}

/*
6
2 1
2 3
2 4
2 5
2 6
111111

6
2 1
2 3
2 4
2 5
2 6
011111

5
1 2
2 3
3 4
4 5
11100

6
2 1
2 3
2 4
2 5
2 6
010101

16
14 10
14 13
14 16
13 11
11 12
13 15
13 5
16 3
16 8
16 1
12 4
4 7
10 2
7 6
16 9
1111111111111111

10
1 4
2 4
3 4
4 5
5 7
7 6
7 8
7 9
7 10
1111111111
*/

Compilation message

power.cpp: In function 'int main()':
power.cpp:57:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   57 |     scanf("%d", &N) ;
      |     ~~~~~^~~~~~~~~~
power.cpp:60:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   60 |         scanf("%d%d", &u, &v ) ;
      |         ~~~~~^~~~~~~~~~~~~~~~~
power.cpp:66:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   66 |     scanf("%s", str ) ;
      |     ~~~~~^~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4992 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 4 ms 5024 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 3 ms 4992 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 3 ms 4992 KB Output is correct
8 Correct 3 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 3 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 3 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 3 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 3 ms 4992 KB Output is correct
17 Correct 3 ms 5024 KB Output is correct
18 Correct 3 ms 4992 KB Output is correct
19 Correct 4 ms 5120 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 3 ms 4992 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4992 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 4 ms 5024 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 3 ms 4992 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 3 ms 4992 KB Output is correct
8 Correct 3 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 3 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 3 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 3 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 3 ms 4992 KB Output is correct
17 Correct 3 ms 5024 KB Output is correct
18 Correct 3 ms 4992 KB Output is correct
19 Correct 4 ms 5120 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 3 ms 4992 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct
23 Correct 4 ms 5120 KB Output is correct
24 Correct 4 ms 5120 KB Output is correct
25 Correct 4 ms 5120 KB Output is correct
26 Correct 4 ms 5120 KB Output is correct
27 Correct 4 ms 5120 KB Output is correct
28 Correct 4 ms 5120 KB Output is correct
29 Correct 5 ms 5248 KB Output is correct
30 Correct 4 ms 5248 KB Output is correct
31 Correct 5 ms 5120 KB Output is correct
32 Correct 4 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 5 ms 5120 KB Output is correct
35 Correct 4 ms 5120 KB Output is correct
36 Correct 5 ms 5120 KB Output is correct
37 Correct 4 ms 5120 KB Output is correct
38 Correct 5 ms 5120 KB Output is correct
39 Correct 5 ms 5248 KB Output is correct
40 Correct 4 ms 5120 KB Output is correct
41 Correct 5 ms 5120 KB Output is correct
42 Correct 4 ms 5120 KB Output is correct
43 Correct 4 ms 5120 KB Output is correct
44 Correct 4 ms 5120 KB Output is correct
45 Correct 4 ms 5120 KB Output is correct
46 Correct 4 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 4 ms 5248 KB Output is correct
49 Correct 4 ms 5248 KB Output is correct
50 Correct 4 ms 5120 KB Output is correct
51 Correct 4 ms 5120 KB Output is correct
52 Correct 4 ms 5120 KB Output is correct
53 Correct 4 ms 5120 KB Output is correct
54 Correct 4 ms 5120 KB Output is correct
55 Correct 4 ms 5120 KB Output is correct
56 Correct 4 ms 5120 KB Output is correct
57 Correct 5 ms 5248 KB Output is correct
58 Correct 4 ms 5120 KB Output is correct
59 Correct 4 ms 5120 KB Output is correct
60 Correct 4 ms 5248 KB Output is correct
61 Correct 4 ms 5120 KB Output is correct
62 Correct 4 ms 5248 KB Output is correct
63 Correct 4 ms 5120 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 4992 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 4 ms 5024 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 3 ms 4992 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 3 ms 4992 KB Output is correct
8 Correct 3 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 3 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 3 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 3 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 3 ms 4992 KB Output is correct
17 Correct 3 ms 5024 KB Output is correct
18 Correct 3 ms 4992 KB Output is correct
19 Correct 4 ms 5120 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 3 ms 4992 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct
23 Correct 4 ms 5120 KB Output is correct
24 Correct 4 ms 5120 KB Output is correct
25 Correct 4 ms 5120 KB Output is correct
26 Correct 4 ms 5120 KB Output is correct
27 Correct 4 ms 5120 KB Output is correct
28 Correct 4 ms 5120 KB Output is correct
29 Correct 5 ms 5248 KB Output is correct
30 Correct 4 ms 5248 KB Output is correct
31 Correct 5 ms 5120 KB Output is correct
32 Correct 4 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 5 ms 5120 KB Output is correct
35 Correct 4 ms 5120 KB Output is correct
36 Correct 5 ms 5120 KB Output is correct
37 Correct 4 ms 5120 KB Output is correct
38 Correct 5 ms 5120 KB Output is correct
39 Correct 5 ms 5248 KB Output is correct
40 Correct 4 ms 5120 KB Output is correct
41 Correct 5 ms 5120 KB Output is correct
42 Correct 4 ms 5120 KB Output is correct
43 Correct 4 ms 5120 KB Output is correct
44 Correct 4 ms 5120 KB Output is correct
45 Correct 4 ms 5120 KB Output is correct
46 Correct 4 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 4 ms 5248 KB Output is correct
49 Correct 4 ms 5248 KB Output is correct
50 Correct 4 ms 5120 KB Output is correct
51 Correct 4 ms 5120 KB Output is correct
52 Correct 4 ms 5120 KB Output is correct
53 Correct 4 ms 5120 KB Output is correct
54 Correct 4 ms 5120 KB Output is correct
55 Correct 4 ms 5120 KB Output is correct
56 Correct 4 ms 5120 KB Output is correct
57 Correct 5 ms 5248 KB Output is correct
58 Correct 4 ms 5120 KB Output is correct
59 Correct 4 ms 5120 KB Output is correct
60 Correct 4 ms 5248 KB Output is correct
61 Correct 4 ms 5120 KB Output is correct
62 Correct 4 ms 5248 KB Output is correct
63 Correct 4 ms 5120 KB Output is correct
64 Correct 188 ms 13432 KB Output is correct
65 Correct 178 ms 13560 KB Output is correct
66 Correct 172 ms 13304 KB Output is correct
67 Correct 177 ms 13456 KB Output is correct
68 Correct 173 ms 13432 KB Output is correct
69 Correct 175 ms 13436 KB Output is correct
70 Correct 171 ms 13380 KB Output is correct
71 Correct 169 ms 13432 KB Output is correct
72 Correct 170 ms 13432 KB Output is correct
73 Correct 185 ms 25976 KB Output is correct
74 Correct 190 ms 25976 KB Output is correct
75 Correct 176 ms 13176 KB Output is correct
76 Correct 168 ms 13176 KB Output is correct
77 Correct 189 ms 13176 KB Output is correct
78 Correct 193 ms 13160 KB Output is correct
79 Correct 179 ms 13180 KB Output is correct
80 Correct 207 ms 13176 KB Output is correct
81 Correct 154 ms 13680 KB Output is correct
82 Correct 173 ms 13428 KB Output is correct
83 Correct 188 ms 18424 KB Output is correct
84 Correct 194 ms 20600 KB Output is correct
85 Correct 193 ms 20472 KB Output is correct
86 Correct 194 ms 14712 KB Output is correct
87 Correct 181 ms 14072 KB Output is correct
88 Correct 174 ms 14712 KB Output is correct
89 Correct 184 ms 14584 KB Output is correct
90 Correct 178 ms 14456 KB Output is correct
91 Correct 165 ms 14612 KB Output is correct
92 Correct 165 ms 14956 KB Output is correct
93 Correct 176 ms 17396 KB Output is correct
94 Correct 158 ms 19128 KB Output is correct
95 Correct 156 ms 17780 KB Output is correct
96 Correct 169 ms 15920 KB Output is correct
97 Correct 171 ms 14456 KB Output is correct
98 Correct 174 ms 13944 KB Output is correct
99 Correct 172 ms 13816 KB Output is correct
100 Correct 168 ms 16868 KB Output is correct
101 Correct 168 ms 14840 KB Output is correct
102 Correct 166 ms 14152 KB Output is correct
103 Correct 175 ms 13944 KB Output is correct
104 Correct 107 ms 14060 KB Output is correct
105 Correct 195 ms 22776 KB Output is correct
106 Correct 111 ms 14056 KB Output is correct
107 Correct 120 ms 14000 KB Output is correct
108 Correct 216 ms 26744 KB Output is correct
109 Correct 103 ms 14096 KB Output is correct
110 Correct 191 ms 27148 KB Output is correct
111 Correct 164 ms 13180 KB Output is correct