oj.uz

Submission #1024376

# Submission time Handle Problem Language Result Execution time Memory
1024376 2024-07-16T02:53:04 Z KienTran Power Plant (JOI20_power) C++14
100 / 100
 73 ms 33872 KB 
#include <bits/stdc++.h>

using namespace std;

const int O = 2e5 + 5;
const int N = (1 << 10) + 5;
const int mod = 1e9 + 7; //998244353;
const int inf = 1e9;
int pr[] = {167772161, 469762049, 754974721, 1045430273, 1051721729, 1053818881};

int n, f[2][2][O];
vector <int> g[O];
bool a[O];

void dfs(int u, int par = 0){
    int dif0 = 0, dif1 = 0;
    for (int v : g[u]){
        if (v != par){
            dfs(v, u);
            f[0][0][u] += f[0][0][v];
            f[1][1][u] += max({f[1][1][v], f[0][0][v], f[1][0][v]});
            f[0][1][u] += f[0][0][v];
            dif0 = max(dif0, f[0][1][v] - f[0][0][v]);
            dif1 = max(dif1, max(f[1][0][v], f[1][1][v]) - f[0][0][v]);
        }
    }
    f[1][0][u] += a[u];
    f[1][1][u] -= a[u];
    f[0][1][u] = f[0][1][u] + max(max((int)a[u], dif0), a[u] + dif1);
}

main(){
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    cin >> n;
    for (int i = 1; i < n; ++ i){
        int u, v; cin >> u >> v;
        g[u].push_back(v);
        g[v].push_back(u);
    }

    for (int i = 1; i <= n; ++ i){
        char x; cin >> x;
        a[i] = (x == '1');
    }

    dfs(1);

    int res = 0;
    for (int i = 0; i < 2; ++ i){
        for (int j = 0; j < 2; ++ j){
            //if (!(i == 1 && j == 0)){
                //for (int z = 1; z <= n; ++ z) cout << i << " " << j << " " << z << " = " << f[i][j][z] << endl;
            //}
            res = max(res, f[i][j][1]);
        }
    }

    cout << res;
}
/**
5
1 2
2 3
3 4
4 5
2
1 1
2 1
**/

Compilation message

power.cpp:32:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   32 | main(){
      | ^~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6620 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6624 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6620 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6624 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 1 ms 6628 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 2 ms 6748 KB Output is correct
30 Correct 2 ms 6748 KB Output is correct
31 Correct 2 ms 6492 KB Output is correct
32 Correct 2 ms 6492 KB Output is correct
33 Correct 1 ms 6492 KB Output is correct
34 Correct 1 ms 6700 KB Output is correct
35 Correct 1 ms 6492 KB Output is correct
36 Correct 1 ms 6672 KB Output is correct
37 Correct 2 ms 6488 KB Output is correct
38 Correct 1 ms 6488 KB Output is correct
39 Correct 1 ms 6748 KB Output is correct
40 Correct 1 ms 6748 KB Output is correct
41 Correct 2 ms 6748 KB Output is correct
42 Correct 1 ms 6700 KB Output is correct
43 Correct 1 ms 6744 KB Output is correct
44 Correct 1 ms 6680 KB Output is correct
45 Correct 1 ms 6748 KB Output is correct
46 Correct 2 ms 6744 KB Output is correct
47 Correct 1 ms 6748 KB Output is correct
48 Correct 1 ms 6576 KB Output is correct
49 Correct 2 ms 6748 KB Output is correct
50 Correct 2 ms 6748 KB Output is correct
51 Correct 2 ms 6744 KB Output is correct
52 Correct 2 ms 6492 KB Output is correct
53 Correct 1 ms 6748 KB Output is correct
54 Correct 1 ms 6748 KB Output is correct
55 Correct 1 ms 6668 KB Output is correct
56 Correct 1 ms 6492 KB Output is correct
57 Correct 2 ms 6748 KB Output is correct
58 Correct 2 ms 6488 KB Output is correct
59 Correct 2 ms 6492 KB Output is correct
60 Correct 1 ms 6748 KB Output is correct
61 Correct 2 ms 6632 KB Output is correct
62 Correct 2 ms 6748 KB Output is correct
63 Correct 1 ms 6492 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6488 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 1 ms 6492 KB Output is correct
9 Correct 1 ms 6492 KB Output is correct
10 Correct 1 ms 6620 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6492 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 1 ms 6492 KB Output is correct
15 Correct 1 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6624 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6492 KB Output is correct
22 Correct 2 ms 6492 KB Output is correct
23 Correct 1 ms 6628 KB Output is correct
24 Correct 2 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 1 ms 6492 KB Output is correct
29 Correct 2 ms 6748 KB Output is correct
30 Correct 2 ms 6748 KB Output is correct
31 Correct 2 ms 6492 KB Output is correct
32 Correct 2 ms 6492 KB Output is correct
33 Correct 1 ms 6492 KB Output is correct
34 Correct 1 ms 6700 KB Output is correct
35 Correct 1 ms 6492 KB Output is correct
36 Correct 1 ms 6672 KB Output is correct
37 Correct 2 ms 6488 KB Output is correct
38 Correct 1 ms 6488 KB Output is correct
39 Correct 1 ms 6748 KB Output is correct
40 Correct 1 ms 6748 KB Output is correct
41 Correct 2 ms 6748 KB Output is correct
42 Correct 1 ms 6700 KB Output is correct
43 Correct 1 ms 6744 KB Output is correct
44 Correct 1 ms 6680 KB Output is correct
45 Correct 1 ms 6748 KB Output is correct
46 Correct 2 ms 6744 KB Output is correct
47 Correct 1 ms 6748 KB Output is correct
48 Correct 1 ms 6576 KB Output is correct
49 Correct 2 ms 6748 KB Output is correct
50 Correct 2 ms 6748 KB Output is correct
51 Correct 2 ms 6744 KB Output is correct
52 Correct 2 ms 6492 KB Output is correct
53 Correct 1 ms 6748 KB Output is correct
54 Correct 1 ms 6748 KB Output is correct
55 Correct 1 ms 6668 KB Output is correct
56 Correct 1 ms 6492 KB Output is correct
57 Correct 2 ms 6748 KB Output is correct
58 Correct 2 ms 6488 KB Output is correct
59 Correct 2 ms 6492 KB Output is correct
60 Correct 1 ms 6748 KB Output is correct
61 Correct 2 ms 6632 KB Output is correct
62 Correct 2 ms 6748 KB Output is correct
63 Correct 1 ms 6492 KB Output is correct
64 Correct 57 ms 17492 KB Output is correct
65 Correct 65 ms 17384 KB Output is correct
66 Correct 62 ms 17380 KB Output is correct
67 Correct 57 ms 17492 KB Output is correct
68 Correct 51 ms 17372 KB Output is correct
69 Correct 72 ms 17488 KB Output is correct
70 Correct 54 ms 17400 KB Output is correct
71 Correct 51 ms 17500 KB Output is correct
72 Correct 53 ms 17644 KB Output is correct
73 Correct 62 ms 32592 KB Output is correct
74 Correct 62 ms 32592 KB Output is correct
75 Correct 54 ms 17408 KB Output is correct
76 Correct 53 ms 17236 KB Output is correct
77 Correct 57 ms 17236 KB Output is correct
78 Correct 51 ms 17232 KB Output is correct
79 Correct 59 ms 17236 KB Output is correct
80 Correct 54 ms 17236 KB Output is correct
81 Correct 50 ms 17612 KB Output is correct
82 Correct 49 ms 17436 KB Output is correct
83 Correct 57 ms 23632 KB Output is correct
84 Correct 63 ms 26196 KB Output is correct
85 Correct 64 ms 25632 KB Output is correct
86 Correct 53 ms 19028 KB Output is correct
87 Correct 58 ms 18256 KB Output is correct
88 Correct 56 ms 18768 KB Output is correct
89 Correct 53 ms 18768 KB Output is correct
90 Correct 56 ms 18516 KB Output is correct
91 Correct 53 ms 18856 KB Output is correct
92 Correct 56 ms 19284 KB Output is correct
93 Correct 53 ms 22220 KB Output is correct
94 Correct 57 ms 24264 KB Output is correct
95 Correct 53 ms 22732 KB Output is correct
96 Correct 62 ms 20560 KB Output is correct
97 Correct 51 ms 18536 KB Output is correct
98 Correct 58 ms 18004 KB Output is correct
99 Correct 49 ms 17660 KB Output is correct
100 Correct 56 ms 21720 KB Output is correct
101 Correct 53 ms 19060 KB Output is correct
102 Correct 49 ms 18260 KB Output is correct
103 Correct 52 ms 17996 KB Output is correct
104 Correct 38 ms 18164 KB Output is correct
105 Correct 73 ms 28752 KB Output is correct
106 Correct 41 ms 18116 KB Output is correct
107 Correct 37 ms 17924 KB Output is correct
108 Correct 61 ms 33364 KB Output is correct
109 Correct 45 ms 18184 KB Output is correct
110 Correct 62 ms 33872 KB Output is correct
111 Correct 48 ms 17228 KB Output is correct