oj.uz

답안 #310502

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
310502 2020-10-07T07:31:37 Z georgerapeanu Power Plant (JOI20_power) C++11
100 / 100
 450 ms 29668 KB 
#include <cstdio>
#include <vector>
#include <algorithm>
#include <iostream>

using namespace std;

int n;
vector<int> graph[200005];
string s;

int dp[200005];
int sum[200005];

void predfs(int nod,int tata){
    for(auto it:graph[nod]){
        if(it == tata){
            continue;
        }
        predfs(it,nod);
        sum[nod] += dp[it];
    }

    if(s[nod] == '1'){
        dp[nod] = max(1,sum[nod] - 1);
    }
    else{
        dp[nod] = sum[nod];
    }
}

int ans = 0;

void dfs(int nod,int tata){
    ans = max(ans,dp[nod]);

    for(auto it:graph[nod]){
        ans = max(ans,dp[it] + (s[nod] == '1'));
    }

    for(auto it:graph[nod]){
        if(it == tata){
            continue;
        }

        sum[nod] -= dp[it];
        if(s[nod] == '1'){
            dp[nod] = max(1,sum[nod] - 1);
        }
        else{
            dp[nod] = sum[nod];
        }
        sum[it] += dp[nod];
        if(s[it] == '1'){
            dp[it] = max(1,sum[it] - 1);
        }
        else{
            dp[it] = sum[it];
        }

        dfs(it,nod);

        sum[it] -= dp[nod];
        if(s[it] == '1'){
            dp[it] = max(1,sum[it] - 1);
        }
        else{
            dp[it] = sum[it];
        }

        sum[nod] += dp[it];
        if(s[nod] == '1'){
            dp[nod] = max(1,sum[nod] - 1);
        }
        else{
            dp[nod] = sum[nod];
        }
    }
}

int main(){

    cin >> n;

    for(int i = 1;i < n;i++){
        int x,y;
        cin >> x >> y;
        graph[x].push_back(y);
        graph[y].push_back(x);
    }

    cin >> s;

    s = " " + s;

    predfs(1,0);
    dfs(1,0);

    cout << ans << "\n";

    return 0;
}

Subtask #1
6.0 / 6.0

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

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 6 ms 5120 KB Output is correct
23 Correct 6 ms 5120 KB Output is correct
24 Correct 6 ms 5120 KB Output is correct
25 Correct 6 ms 5152 KB Output is correct
26 Correct 6 ms 5120 KB Output is correct
27 Correct 6 ms 5120 KB Output is correct
28 Correct 6 ms 5120 KB Output is correct
29 Correct 6 ms 5248 KB Output is correct
30 Correct 6 ms 5248 KB Output is correct
31 Correct 7 ms 5120 KB Output is correct
32 Correct 6 ms 5120 KB Output is correct
33 Correct 6 ms 5120 KB Output is correct
34 Correct 7 ms 5120 KB Output is correct
35 Correct 6 ms 5120 KB Output is correct
36 Correct 6 ms 5120 KB Output is correct
37 Correct 6 ms 5120 KB Output is correct
38 Correct 6 ms 5120 KB Output is correct
39 Correct 6 ms 5120 KB Output is correct
40 Correct 6 ms 5120 KB Output is correct
41 Correct 6 ms 5120 KB Output is correct
42 Correct 6 ms 5120 KB Output is correct
43 Correct 6 ms 5120 KB Output is correct
44 Correct 6 ms 5120 KB Output is correct
45 Correct 6 ms 5120 KB Output is correct
46 Correct 6 ms 5120 KB Output is correct
47 Correct 7 ms 5120 KB Output is correct
48 Correct 6 ms 5248 KB Output is correct
49 Correct 7 ms 5248 KB Output is correct
50 Correct 6 ms 5120 KB Output is correct
51 Correct 7 ms 5248 KB Output is correct
52 Correct 6 ms 5120 KB Output is correct
53 Correct 6 ms 5120 KB Output is correct
54 Correct 6 ms 5120 KB Output is correct
55 Correct 6 ms 5120 KB Output is correct
56 Correct 6 ms 5120 KB Output is correct
57 Correct 6 ms 5248 KB Output is correct
58 Correct 6 ms 5120 KB Output is correct
59 Correct 6 ms 5120 KB Output is correct
60 Correct 6 ms 5248 KB Output is correct
61 Correct 6 ms 5120 KB Output is correct
62 Correct 6 ms 5248 KB Output is correct
63 Correct 6 ms 5120 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4992 KB Output is correct
2 Correct 4 ms 4992 KB Output is correct
3 Correct 4 ms 4992 KB Output is correct
4 Correct 4 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 4 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 4 ms 4992 KB Output is correct
9 Correct 4 ms 4992 KB Output is correct
10 Correct 4 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 4 ms 4992 KB Output is correct
13 Correct 4 ms 4992 KB Output is correct
14 Correct 4 ms 4992 KB Output is correct
15 Correct 4 ms 4992 KB Output is correct
16 Correct 4 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 4 ms 4992 KB Output is correct
22 Correct 6 ms 5120 KB Output is correct
23 Correct 6 ms 5120 KB Output is correct
24 Correct 6 ms 5120 KB Output is correct
25 Correct 6 ms 5152 KB Output is correct
26 Correct 6 ms 5120 KB Output is correct
27 Correct 6 ms 5120 KB Output is correct
28 Correct 6 ms 5120 KB Output is correct
29 Correct 6 ms 5248 KB Output is correct
30 Correct 6 ms 5248 KB Output is correct
31 Correct 7 ms 5120 KB Output is correct
32 Correct 6 ms 5120 KB Output is correct
33 Correct 6 ms 5120 KB Output is correct
34 Correct 7 ms 5120 KB Output is correct
35 Correct 6 ms 5120 KB Output is correct
36 Correct 6 ms 5120 KB Output is correct
37 Correct 6 ms 5120 KB Output is correct
38 Correct 6 ms 5120 KB Output is correct
39 Correct 6 ms 5120 KB Output is correct
40 Correct 6 ms 5120 KB Output is correct
41 Correct 6 ms 5120 KB Output is correct
42 Correct 6 ms 5120 KB Output is correct
43 Correct 6 ms 5120 KB Output is correct
44 Correct 6 ms 5120 KB Output is correct
45 Correct 6 ms 5120 KB Output is correct
46 Correct 6 ms 5120 KB Output is correct
47 Correct 7 ms 5120 KB Output is correct
48 Correct 6 ms 5248 KB Output is correct
49 Correct 7 ms 5248 KB Output is correct
50 Correct 6 ms 5120 KB Output is correct
51 Correct 7 ms 5248 KB Output is correct
52 Correct 6 ms 5120 KB Output is correct
53 Correct 6 ms 5120 KB Output is correct
54 Correct 6 ms 5120 KB Output is correct
55 Correct 6 ms 5120 KB Output is correct
56 Correct 6 ms 5120 KB Output is correct
57 Correct 6 ms 5248 KB Output is correct
58 Correct 6 ms 5120 KB Output is correct
59 Correct 6 ms 5120 KB Output is correct
60 Correct 6 ms 5248 KB Output is correct
61 Correct 6 ms 5120 KB Output is correct
62 Correct 6 ms 5248 KB Output is correct
63 Correct 6 ms 5120 KB Output is correct
64 Correct 420 ms 15940 KB Output is correct
65 Correct 416 ms 15940 KB Output is correct
66 Correct 417 ms 15936 KB Output is correct
67 Correct 416 ms 15940 KB Output is correct
68 Correct 424 ms 15936 KB Output is correct
69 Correct 415 ms 15940 KB Output is correct
70 Correct 421 ms 15940 KB Output is correct
71 Correct 419 ms 15936 KB Output is correct
72 Correct 410 ms 15940 KB Output is correct
73 Correct 446 ms 28612 KB Output is correct
74 Correct 450 ms 28484 KB Output is correct
75 Correct 417 ms 15812 KB Output is correct
76 Correct 408 ms 15812 KB Output is correct
77 Correct 423 ms 15812 KB Output is correct
78 Correct 428 ms 15940 KB Output is correct
79 Correct 421 ms 15812 KB Output is correct
80 Correct 420 ms 15812 KB Output is correct
81 Correct 379 ms 16368 KB Output is correct
82 Correct 402 ms 16048 KB Output is correct
83 Correct 428 ms 21020 KB Output is correct
84 Correct 431 ms 23236 KB Output is correct
85 Correct 436 ms 22912 KB Output is correct
86 Correct 414 ms 17348 KB Output is correct
87 Correct 419 ms 16836 KB Output is correct
88 Correct 398 ms 17220 KB Output is correct
89 Correct 400 ms 17348 KB Output is correct
90 Correct 410 ms 16964 KB Output is correct
91 Correct 411 ms 17348 KB Output is correct
92 Correct 412 ms 17604 KB Output is correct
93 Correct 397 ms 19904 KB Output is correct
94 Correct 385 ms 21740 KB Output is correct
95 Correct 393 ms 20416 KB Output is correct
96 Correct 400 ms 18628 KB Output is correct
97 Correct 394 ms 17092 KB Output is correct
98 Correct 408 ms 16580 KB Output is correct
99 Correct 417 ms 16452 KB Output is correct
100 Correct 400 ms 19516 KB Output is correct
101 Correct 411 ms 17476 KB Output is correct
102 Correct 404 ms 16708 KB Output is correct
103 Correct 414 ms 16580 KB Output is correct
104 Correct 322 ms 16876 KB Output is correct
105 Correct 441 ms 25540 KB Output is correct
106 Correct 314 ms 16748 KB Output is correct
107 Correct 311 ms 16876 KB Output is correct
108 Correct 442 ms 29668 KB Output is correct
109 Correct 323 ms 16876 KB Output is correct
110 Correct 447 ms 29636 KB Output is correct
111 Correct 393 ms 15940 KB Output is correct