답안 #1036344

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1036344	2024-07-27T09:39:18 Z	underwaterkillerwhale	Power Plant (JOI20_power)	C++17	100 / 100	81 ms	28568 KB

power

#include <bits/stdc++.h>
#define se              second
#define fs              first
#define mp              make_pair
#define pb              push_back
#define ll              long long
#define ii              pair<ll,ll>
#define ld              long double
#define SZ(v)           (int)v.size()
#define ALL(v)          v.begin(), v.end()
#define bit(msk, i)     ((msk >> i) & 1)
#define iter(id, v)     for(auto id : v)
#define rep(i,m,n)      for(int i=(m); i<=(n); i++)
#define reb(i,m,n)      for(int i=(m); i>=(n); i--)
using namespace std;

mt19937_64 rd(chrono :: steady_clock :: now().time_since_epoch().count());
ll Rand(ll l, ll r) { return uniform_int_distribution<ll> (l, r)(rd); }

const int N = 2e5 + 7;
const int Mod = 1e9 + 7;
const int szBL = 240;
const ll  INF = 1e18;
const int BASE = 137;

int n;
vector<int> ke[N];
int dp[N][3];
int a[N];

void dfs (int u, int p ) {
    iter (&v, ke[u]) {
        if (v == p) continue;
        dfs(v, u);
    }
    dp[u][0] = 0;
    {
        int sum = 0;
        iter (&v, ke[u]) {
            if (v == p) continue;
            sum += dp[v][1];
        }
        dp[u][1] = max(a[u], sum - a[u]);
    }
    int sum = 0;
    iter (&v, ke[u]) {
        if (v == p) continue;
        sum += dp[v][1];
        dp[u][2] = max(dp[u][2], max(dp[v][1] + a[u], dp[v][2] - a[u]));
    }
    dp[u][2] = max(dp[u][2], sum - a[u]);
}

void solution (){
    cin >> n;
    rep (i, 1, n - 1) {
        int u, v;
        cin >> u >> v;
        ke[u].push_back(v);
        ke[v].push_back(u);\
    }
    string s;
    cin >> s;
    rep (i, 1, n) {
        a[i] = s[i - 1] - '0';
    }
    dfs(1, 0);
    int res = 0;
    rep (i, 1, n)
    rep (j, 0, 2) res = max(res, dp[i][j]);
    cout << res<<"\n";
}

#define file(name) freopen(name".inp", "r", stdin); \
freopen(name".out", "w", stdout);
/*
*/
int main () {
//    file("c");
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    ll num_Test = 1;
//    cin >> num_Test;
    while(num_Test--)
        solution();
}
/*
no bug challenge +2

*/

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 KB	Output is correct
2	Correct	2 ms	5164 KB	Output is correct
3	Correct	2 ms	4984 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	2 ms	4956 KB	Output is correct
6	Correct	2 ms	5164 KB	Output is correct
7	Correct	2 ms	5168 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	5164 KB	Output is correct
11	Correct	3 ms	4956 KB	Output is correct
12	Correct	2 ms	4956 KB	Output is correct
13	Correct	2 ms	4956 KB	Output is correct
14	Correct	2 ms	4956 KB	Output is correct
15	Correct	2 ms	4956 KB	Output is correct
16	Correct	2 ms	4956 KB	Output is correct
17	Correct	2 ms	4956 KB	Output is correct
18	Correct	2 ms	5164 KB	Output is correct
19	Correct	2 ms	4956 KB	Output is correct
20	Correct	2 ms	5172 KB	Output is correct
21	Correct	2 ms	4952 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 KB	Output is correct
2	Correct	2 ms	5164 KB	Output is correct
3	Correct	2 ms	4984 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	2 ms	4956 KB	Output is correct
6	Correct	2 ms	5164 KB	Output is correct
7	Correct	2 ms	5168 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	5164 KB	Output is correct
11	Correct	3 ms	4956 KB	Output is correct
12	Correct	2 ms	4956 KB	Output is correct
13	Correct	2 ms	4956 KB	Output is correct
14	Correct	2 ms	4956 KB	Output is correct
15	Correct	2 ms	4956 KB	Output is correct
16	Correct	2 ms	4956 KB	Output is correct
17	Correct	2 ms	4956 KB	Output is correct
18	Correct	2 ms	5164 KB	Output is correct
19	Correct	2 ms	4956 KB	Output is correct
20	Correct	2 ms	5172 KB	Output is correct
21	Correct	2 ms	4952 KB	Output is correct
22	Correct	3 ms	5208 KB	Output is correct
23	Correct	3 ms	5212 KB	Output is correct
24	Correct	2 ms	5212 KB	Output is correct
25	Correct	2 ms	5212 KB	Output is correct
26	Correct	2 ms	5212 KB	Output is correct
27	Correct	2 ms	5176 KB	Output is correct
28	Correct	3 ms	5224 KB	Output is correct
29	Correct	2 ms	5212 KB	Output is correct
30	Correct	3 ms	5212 KB	Output is correct
31	Correct	2 ms	5212 KB	Output is correct
32	Correct	2 ms	5212 KB	Output is correct
33	Correct	2 ms	5212 KB	Output is correct
34	Correct	2 ms	5240 KB	Output is correct
35	Correct	2 ms	5212 KB	Output is correct
36	Correct	2 ms	5212 KB	Output is correct
37	Correct	3 ms	5212 KB	Output is correct
38	Correct	2 ms	5212 KB	Output is correct
39	Correct	2 ms	5212 KB	Output is correct
40	Correct	3 ms	5212 KB	Output is correct
41	Correct	2 ms	5288 KB	Output is correct
42	Correct	2 ms	5212 KB	Output is correct
43	Correct	3 ms	5212 KB	Output is correct
44	Correct	3 ms	5208 KB	Output is correct
45	Correct	3 ms	5212 KB	Output is correct
46	Correct	2 ms	5212 KB	Output is correct
47	Correct	2 ms	5212 KB	Output is correct
48	Correct	2 ms	5212 KB	Output is correct
49	Correct	3 ms	5212 KB	Output is correct
50	Correct	2 ms	5212 KB	Output is correct
51	Correct	3 ms	5064 KB	Output is correct
52	Correct	2 ms	5212 KB	Output is correct
53	Correct	2 ms	5212 KB	Output is correct
54	Correct	3 ms	5212 KB	Output is correct
55	Correct	3 ms	5212 KB	Output is correct
56	Correct	2 ms	5212 KB	Output is correct
57	Correct	3 ms	5248 KB	Output is correct
58	Correct	3 ms	5208 KB	Output is correct
59	Correct	2 ms	5212 KB	Output is correct
60	Correct	3 ms	5212 KB	Output is correct
61	Correct	2 ms	5212 KB	Output is correct
62	Correct	2 ms	5248 KB	Output is correct
63	Correct	2 ms	5212 KB	Output is correct

Subtask #3
53.0 / 53.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	4956 KB	Output is correct
2	Correct	2 ms	5164 KB	Output is correct
3	Correct	2 ms	4984 KB	Output is correct
4	Correct	2 ms	4956 KB	Output is correct
5	Correct	2 ms	4956 KB	Output is correct
6	Correct	2 ms	5164 KB	Output is correct
7	Correct	2 ms	5168 KB	Output is correct
8	Correct	2 ms	4956 KB	Output is correct
9	Correct	2 ms	4956 KB	Output is correct
10	Correct	2 ms	5164 KB	Output is correct
11	Correct	3 ms	4956 KB	Output is correct
12	Correct	2 ms	4956 KB	Output is correct
13	Correct	2 ms	4956 KB	Output is correct
14	Correct	2 ms	4956 KB	Output is correct
15	Correct	2 ms	4956 KB	Output is correct
16	Correct	2 ms	4956 KB	Output is correct
17	Correct	2 ms	4956 KB	Output is correct
18	Correct	2 ms	5164 KB	Output is correct
19	Correct	2 ms	4956 KB	Output is correct
20	Correct	2 ms	5172 KB	Output is correct
21	Correct	2 ms	4952 KB	Output is correct
22	Correct	3 ms	5208 KB	Output is correct
23	Correct	3 ms	5212 KB	Output is correct
24	Correct	2 ms	5212 KB	Output is correct
25	Correct	2 ms	5212 KB	Output is correct
26	Correct	2 ms	5212 KB	Output is correct
27	Correct	2 ms	5176 KB	Output is correct
28	Correct	3 ms	5224 KB	Output is correct
29	Correct	2 ms	5212 KB	Output is correct
30	Correct	3 ms	5212 KB	Output is correct
31	Correct	2 ms	5212 KB	Output is correct
32	Correct	2 ms	5212 KB	Output is correct
33	Correct	2 ms	5212 KB	Output is correct
34	Correct	2 ms	5240 KB	Output is correct
35	Correct	2 ms	5212 KB	Output is correct
36	Correct	2 ms	5212 KB	Output is correct
37	Correct	3 ms	5212 KB	Output is correct
38	Correct	2 ms	5212 KB	Output is correct
39	Correct	2 ms	5212 KB	Output is correct
40	Correct	3 ms	5212 KB	Output is correct
41	Correct	2 ms	5288 KB	Output is correct
42	Correct	2 ms	5212 KB	Output is correct
43	Correct	3 ms	5212 KB	Output is correct
44	Correct	3 ms	5208 KB	Output is correct
45	Correct	3 ms	5212 KB	Output is correct
46	Correct	2 ms	5212 KB	Output is correct
47	Correct	2 ms	5212 KB	Output is correct
48	Correct	2 ms	5212 KB	Output is correct
49	Correct	3 ms	5212 KB	Output is correct
50	Correct	2 ms	5212 KB	Output is correct
51	Correct	3 ms	5064 KB	Output is correct
52	Correct	2 ms	5212 KB	Output is correct
53	Correct	2 ms	5212 KB	Output is correct
54	Correct	3 ms	5212 KB	Output is correct
55	Correct	3 ms	5212 KB	Output is correct
56	Correct	2 ms	5212 KB	Output is correct
57	Correct	3 ms	5248 KB	Output is correct
58	Correct	3 ms	5208 KB	Output is correct
59	Correct	2 ms	5212 KB	Output is correct
60	Correct	3 ms	5212 KB	Output is correct
61	Correct	2 ms	5212 KB	Output is correct
62	Correct	2 ms	5248 KB	Output is correct
63	Correct	2 ms	5212 KB	Output is correct
64	Correct	65 ms	17596 KB	Output is correct
65	Correct	58 ms	17520 KB	Output is correct
66	Correct	57 ms	17544 KB	Output is correct
67	Correct	60 ms	17560 KB	Output is correct
68	Correct	59 ms	17536 KB	Output is correct
69	Correct	56 ms	17556 KB	Output is correct
70	Correct	67 ms	17572 KB	Output is correct
71	Correct	64 ms	17564 KB	Output is correct
72	Correct	63 ms	17536 KB	Output is correct
73	Correct	66 ms	27540 KB	Output is correct
74	Correct	67 ms	27540 KB	Output is correct
75	Correct	54 ms	17556 KB	Output is correct
76	Correct	58 ms	17564 KB	Output is correct
77	Correct	56 ms	17552 KB	Output is correct
78	Correct	57 ms	17556 KB	Output is correct
79	Correct	78 ms	17552 KB	Output is correct
80	Correct	68 ms	17500 KB	Output is correct
81	Correct	48 ms	17868 KB	Output is correct
82	Correct	54 ms	17748 KB	Output is correct
83	Correct	77 ms	21652 KB	Output is correct
84	Correct	69 ms	23460 KB	Output is correct
85	Correct	81 ms	23080 KB	Output is correct
86	Correct	77 ms	18580 KB	Output is correct
87	Correct	60 ms	18064 KB	Output is correct
88	Correct	58 ms	18636 KB	Output is correct
89	Correct	64 ms	18592 KB	Output is correct
90	Correct	60 ms	18412 KB	Output is correct
91	Correct	58 ms	18804 KB	Output is correct
92	Correct	57 ms	18880 KB	Output is correct
93	Correct	79 ms	20764 KB	Output is correct
94	Correct	54 ms	22220 KB	Output is correct
95	Correct	71 ms	21232 KB	Output is correct
96	Correct	71 ms	19676 KB	Output is correct
97	Correct	78 ms	18408 KB	Output is correct
98	Correct	54 ms	18116 KB	Output is correct
99	Correct	54 ms	17804 KB	Output is correct
100	Correct	60 ms	20600 KB	Output is correct
101	Correct	53 ms	18964 KB	Output is correct
102	Correct	58 ms	18276 KB	Output is correct
103	Correct	56 ms	18100 KB	Output is correct
104	Correct	40 ms	18320 KB	Output is correct
105	Correct	66 ms	24976 KB	Output is correct
106	Correct	38 ms	18384 KB	Output is correct
107	Correct	39 ms	18380 KB	Output is correct
108	Correct	62 ms	28308 KB	Output is correct
109	Correct	41 ms	18368 KB	Output is correct
110	Correct	71 ms	28568 KB	Output is correct
111	Correct	50 ms	17572 KB	Output is correct

답안 #1036344

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 41.0 / 41.0

Subtask #3 53.0 / 53.0

Subtask #1
6.0 / 6.0

Subtask #2
41.0 / 41.0

Subtask #3
53.0 / 53.0