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답안 #613992

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
613992 2022-07-30T15:52:15 Z MohamedAliSaidane Power Plant (JOI20_power) C++14
100 / 100
 295 ms 41800 KB 
#include<bits/stdc++.h>

    using namespace std;

    typedef long long ll;

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

    typedef vector<int> vi;
    typedef vector<ll> vll;
    typedef vector<pii> vpi;
    typedef vector<pll> vpl;

    #define pb push_back
    #define popb pop_back
    #define all(x) (x).begin(), (x).end()


    #define ff first
    #define ss second

    const int nax = 2e5 + 4;
    int n;
    string str;
    int C[nax];
    vi adj[nax];
    int dp[nax][2][2];
    int hw[nax], par[nax];

    void dfs(int x, int p)
    {
        par[x] = p;
        hw[x] = C[x];
        for(auto e: adj[x])
        {
            if(e != p)
            {
                dfs(e,x );
                hw[x] += hw[e];
            }
        }
    }
    int f(int x, int ext, int b)
    {
        if(dp[x][ext][b] != -1)
            return dp[x][ext][b];
        if(b && ext)
            return dp[x][ext][b] = 1;
        if(ext)
        {
            int rep = 0;
            for(auto e: adj[x])
            {
                if(e != par[x] && hw[e] > 0 )
                {
                    int p = C[e] ? f(e, 1, 1): 0;
                    int q = f(e, 1, 0);
                    rep += max(p, q);
                }
            }
            return dp[x][ext][b] = max(0, rep - C[x]);
        }
        else
        {
            if(b)
            {
                int u=  0;
                for(auto e: adj[x])
                {
                    if(e != par[x] && hw[e] > 0)
                    {
                        int p = C[e] ? f(e, 1, 1): 0;
                        int q = f(e, 1, 0);
                        u = max(u, max(p, q));
                    }
                }
                return dp[x][ext][b] = u + 1;
            }
            else
            {
                int sum  = 0;
                int maxi = 0;
                for(auto e: adj[x])
                {
                    if(e != par[x] && hw[e] > 0 )
                    {
                        int p = C[e] ? f(e, 1, 1): 0;
                        int q=  f(e, 1, 0);
                        int pp = C[e] ? f(e, 0, 1): 0 ;
                        int qp = f(e, 0, 0);
                        maxi = max(maxi, max(pp, qp));
                        sum += max(p, q);
                    }
                }
                return dp[x][ext][b] = max(maxi, sum - C[x]);
            }
        }

    }
    int32_t main()
    {
        ios::sync_with_stdio(false);
        cin.tie(0); cout.tie(0);
        memset(dp, -1,sizeof(dp));
        cin >> n;
        for(int i = 1; i < n;i ++)
        {
            int a, b;
            cin >> a >> b;
            adj[a].pb(b);
            adj[b].pb(a);
        }
        cin >> str;
        for(int i = 1; i <= n ;i ++)
            C[i] = (str[i - 1] == '1');

        dfs(1, 0);
        int p = C[1] ? f(1, 0, 1): 0 ;
        int q = f(1, 0, 0);
        cout << max(p, q);

    }

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 8148 KB Output is correct
2 Correct 4 ms 8068 KB Output is correct
3 Correct 5 ms 8276 KB Output is correct
4 Correct 5 ms 8160 KB Output is correct
5 Correct 4 ms 8124 KB Output is correct
6 Correct 5 ms 8168 KB Output is correct
7 Correct 4 ms 8164 KB Output is correct
8 Correct 5 ms 8148 KB Output is correct
9 Correct 5 ms 8148 KB Output is correct
10 Correct 4 ms 8148 KB Output is correct
11 Correct 4 ms 8276 KB Output is correct
12 Correct 4 ms 8148 KB Output is correct
13 Correct 3 ms 8148 KB Output is correct
14 Correct 4 ms 8148 KB Output is correct
15 Correct 4 ms 8164 KB Output is correct
16 Correct 4 ms 8148 KB Output is correct
17 Correct 4 ms 8156 KB Output is correct
18 Correct 4 ms 8148 KB Output is correct
19 Correct 4 ms 8148 KB Output is correct
20 Correct 5 ms 8164 KB Output is correct
21 Correct 4 ms 8148 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 8148 KB Output is correct
2 Correct 4 ms 8068 KB Output is correct
3 Correct 5 ms 8276 KB Output is correct
4 Correct 5 ms 8160 KB Output is correct
5 Correct 4 ms 8124 KB Output is correct
6 Correct 5 ms 8168 KB Output is correct
7 Correct 4 ms 8164 KB Output is correct
8 Correct 5 ms 8148 KB Output is correct
9 Correct 5 ms 8148 KB Output is correct
10 Correct 4 ms 8148 KB Output is correct
11 Correct 4 ms 8276 KB Output is correct
12 Correct 4 ms 8148 KB Output is correct
13 Correct 3 ms 8148 KB Output is correct
14 Correct 4 ms 8148 KB Output is correct
15 Correct 4 ms 8164 KB Output is correct
16 Correct 4 ms 8148 KB Output is correct
17 Correct 4 ms 8156 KB Output is correct
18 Correct 4 ms 8148 KB Output is correct
19 Correct 4 ms 8148 KB Output is correct
20 Correct 5 ms 8164 KB Output is correct
21 Correct 4 ms 8148 KB Output is correct
22 Correct 5 ms 8220 KB Output is correct
23 Correct 5 ms 8276 KB Output is correct
24 Correct 4 ms 8276 KB Output is correct
25 Correct 5 ms 8180 KB Output is correct
26 Correct 6 ms 8404 KB Output is correct
27 Correct 5 ms 8276 KB Output is correct
28 Correct 5 ms 8276 KB Output is correct
29 Correct 5 ms 8420 KB Output is correct
30 Correct 5 ms 8312 KB Output is correct
31 Correct 5 ms 8224 KB Output is correct
32 Correct 5 ms 8276 KB Output is correct
33 Correct 6 ms 8276 KB Output is correct
34 Correct 5 ms 8276 KB Output is correct
35 Correct 5 ms 8148 KB Output is correct
36 Correct 7 ms 8192 KB Output is correct
37 Correct 5 ms 8276 KB Output is correct
38 Correct 5 ms 8276 KB Output is correct
39 Correct 5 ms 8296 KB Output is correct
40 Correct 5 ms 8304 KB Output is correct
41 Correct 5 ms 8276 KB Output is correct
42 Correct 5 ms 8276 KB Output is correct
43 Correct 6 ms 8404 KB Output is correct
44 Correct 5 ms 8228 KB Output is correct
45 Correct 5 ms 8276 KB Output is correct
46 Correct 4 ms 8300 KB Output is correct
47 Correct 5 ms 8276 KB Output is correct
48 Correct 5 ms 8300 KB Output is correct
49 Correct 5 ms 8356 KB Output is correct
50 Correct 5 ms 8304 KB Output is correct
51 Correct 5 ms 8404 KB Output is correct
52 Correct 5 ms 8172 KB Output is correct
53 Correct 5 ms 8276 KB Output is correct
54 Correct 5 ms 8220 KB Output is correct
55 Correct 5 ms 8300 KB Output is correct
56 Correct 5 ms 8276 KB Output is correct
57 Correct 5 ms 8404 KB Output is correct
58 Correct 6 ms 8276 KB Output is correct
59 Correct 5 ms 8176 KB Output is correct
60 Correct 5 ms 8276 KB Output is correct
61 Correct 5 ms 8276 KB Output is correct
62 Correct 5 ms 8404 KB Output is correct
63 Correct 5 ms 8276 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 8148 KB Output is correct
2 Correct 4 ms 8068 KB Output is correct
3 Correct 5 ms 8276 KB Output is correct
4 Correct 5 ms 8160 KB Output is correct
5 Correct 4 ms 8124 KB Output is correct
6 Correct 5 ms 8168 KB Output is correct
7 Correct 4 ms 8164 KB Output is correct
8 Correct 5 ms 8148 KB Output is correct
9 Correct 5 ms 8148 KB Output is correct
10 Correct 4 ms 8148 KB Output is correct
11 Correct 4 ms 8276 KB Output is correct
12 Correct 4 ms 8148 KB Output is correct
13 Correct 3 ms 8148 KB Output is correct
14 Correct 4 ms 8148 KB Output is correct
15 Correct 4 ms 8164 KB Output is correct
16 Correct 4 ms 8148 KB Output is correct
17 Correct 4 ms 8156 KB Output is correct
18 Correct 4 ms 8148 KB Output is correct
19 Correct 4 ms 8148 KB Output is correct
20 Correct 5 ms 8164 KB Output is correct
21 Correct 4 ms 8148 KB Output is correct
22 Correct 5 ms 8220 KB Output is correct
23 Correct 5 ms 8276 KB Output is correct
24 Correct 4 ms 8276 KB Output is correct
25 Correct 5 ms 8180 KB Output is correct
26 Correct 6 ms 8404 KB Output is correct
27 Correct 5 ms 8276 KB Output is correct
28 Correct 5 ms 8276 KB Output is correct
29 Correct 5 ms 8420 KB Output is correct
30 Correct 5 ms 8312 KB Output is correct
31 Correct 5 ms 8224 KB Output is correct
32 Correct 5 ms 8276 KB Output is correct
33 Correct 6 ms 8276 KB Output is correct
34 Correct 5 ms 8276 KB Output is correct
35 Correct 5 ms 8148 KB Output is correct
36 Correct 7 ms 8192 KB Output is correct
37 Correct 5 ms 8276 KB Output is correct
38 Correct 5 ms 8276 KB Output is correct
39 Correct 5 ms 8296 KB Output is correct
40 Correct 5 ms 8304 KB Output is correct
41 Correct 5 ms 8276 KB Output is correct
42 Correct 5 ms 8276 KB Output is correct
43 Correct 6 ms 8404 KB Output is correct
44 Correct 5 ms 8228 KB Output is correct
45 Correct 5 ms 8276 KB Output is correct
46 Correct 4 ms 8300 KB Output is correct
47 Correct 5 ms 8276 KB Output is correct
48 Correct 5 ms 8300 KB Output is correct
49 Correct 5 ms 8356 KB Output is correct
50 Correct 5 ms 8304 KB Output is correct
51 Correct 5 ms 8404 KB Output is correct
52 Correct 5 ms 8172 KB Output is correct
53 Correct 5 ms 8276 KB Output is correct
54 Correct 5 ms 8220 KB Output is correct
55 Correct 5 ms 8300 KB Output is correct
56 Correct 5 ms 8276 KB Output is correct
57 Correct 5 ms 8404 KB Output is correct
58 Correct 6 ms 8276 KB Output is correct
59 Correct 5 ms 8176 KB Output is correct
60 Correct 5 ms 8276 KB Output is correct
61 Correct 5 ms 8276 KB Output is correct
62 Correct 5 ms 8404 KB Output is correct
63 Correct 5 ms 8276 KB Output is correct
64 Correct 216 ms 19948 KB Output is correct
65 Correct 181 ms 19852 KB Output is correct
66 Correct 205 ms 19916 KB Output is correct
67 Correct 175 ms 19924 KB Output is correct
68 Correct 178 ms 19868 KB Output is correct
69 Correct 154 ms 19880 KB Output is correct
70 Correct 151 ms 19868 KB Output is correct
71 Correct 139 ms 19888 KB Output is correct
72 Correct 121 ms 19852 KB Output is correct
73 Correct 237 ms 40040 KB Output is correct
74 Correct 243 ms 40052 KB Output is correct
75 Correct 188 ms 19804 KB Output is correct
76 Correct 207 ms 19760 KB Output is correct
77 Correct 196 ms 19772 KB Output is correct
78 Correct 199 ms 19896 KB Output is correct
79 Correct 205 ms 19800 KB Output is correct
80 Correct 173 ms 19720 KB Output is correct
81 Correct 165 ms 20212 KB Output is correct
82 Correct 156 ms 20000 KB Output is correct
83 Correct 233 ms 28088 KB Output is correct
84 Correct 237 ms 31504 KB Output is correct
85 Correct 222 ms 30924 KB Output is correct
86 Correct 199 ms 21960 KB Output is correct
87 Correct 175 ms 21044 KB Output is correct
88 Correct 204 ms 21448 KB Output is correct
89 Correct 223 ms 21468 KB Output is correct
90 Correct 232 ms 21120 KB Output is correct
91 Correct 231 ms 21504 KB Output is correct
92 Correct 190 ms 22056 KB Output is correct
93 Correct 206 ms 26032 KB Output is correct
94 Correct 218 ms 28848 KB Output is correct
95 Correct 196 ms 26732 KB Output is correct
96 Correct 207 ms 23808 KB Output is correct
97 Correct 236 ms 21280 KB Output is correct
98 Correct 223 ms 20492 KB Output is correct
99 Correct 248 ms 20300 KB Output is correct
100 Correct 238 ms 25260 KB Output is correct
101 Correct 207 ms 22136 KB Output is correct
102 Correct 204 ms 20828 KB Output is correct
103 Correct 219 ms 20460 KB Output is correct
104 Correct 75 ms 20692 KB Output is correct
105 Correct 209 ms 34944 KB Output is correct
106 Correct 117 ms 20616 KB Output is correct
107 Correct 129 ms 20540 KB Output is correct
108 Correct 295 ms 41464 KB Output is correct
109 Correct 102 ms 20704 KB Output is correct
110 Correct 282 ms 41800 KB Output is correct
111 Correct 208 ms 19748 KB Output is correct