oj.uz

Submission #518426

# Submission time Handle Problem Language Result Execution time Memory
518426 2022-01-23T19:09:35 Z Vladth11 Power Plant (JOI20_power) C++14
100 / 100
 175 ms 32328 KB 
#include <bits/stdc++.h>
#define debug(x) cerr << #x << " " << x << "\n"
#define debugs(x) cerr << #x << " " << x << " "

using namespace std;
typedef long long ll;
typedef pair <ll, ll> pii;
typedef pair <long double, pii> muchie;

const ll NMAX = 200001;
const ll VMAX = 21;
const ll INF = (1LL << 60);
const ll MOD = 1000000007;
const ll BLOCK = 318;
const ll base = 31;
const ll nr_of_bits = 60;

vector <int> v[NMAX];
string s;
int dp[NMAX][2];

void DFS(int node, int p){
    if(s[node - 1] == '1'){
        dp[node][1] = 1;
    }
    int maxim = -2e9, maxim1 = -2e9, maxim2 = 0, sum = 0;
    for(auto x : v[node]){
        if(x == p)
            continue;
        DFS(x, node);
        maxim = max(maxim, dp[x][2]);
        maxim1 = max(maxim1, dp[x][1]);
        sum += dp[x][1];
    }
    dp[node][2] = maxim;
    dp[node][2] = max(dp[node][2], maxim1 + (s[node - 1] == '1')); /// il iau pe cel mai de sus
    dp[node][1] = max(dp[node][1], sum - (s[node - 1] == '1'));
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    int n, i;
    cin >> n;
    for(i = 1; i < n; i++){
        int x, y;
        cin >> x >> y;
        v[x].push_back(y);
        v[y].push_back(x);
    }
    cin >> s;
    DFS(1, 0);
    cout << max(dp[1][1], dp[1][2]);
    return 0;
}

Compilation message

power.cpp: In function 'void DFS(int, int)':
power.cpp:26:38: warning: unused variable 'maxim2' [-Wunused-variable]
   26 |     int maxim = -2e9, maxim1 = -2e9, maxim2 = 0, sum = 0;
      |                                      ^~~~~~
power.cpp:35:15: warning: array subscript 2 is above array bounds of 'int [2]' [-Warray-bounds]
   35 |     dp[node][2] = maxim;
      |     ~~~~~~~~~~^
power.cpp:36:15: warning: array subscript 2 is above array bounds of 'int [2]' [-Warray-bounds]
   36 |     dp[node][2] = max(dp[node][2], maxim1 + (s[node - 1] == '1')); /// il iau pe cel mai de sus
      |     ~~~~~~~~~~^
power.cpp:31:35: warning: array subscript 2 is above array bounds of 'int [2]' [-Warray-bounds]
   31 |         maxim = max(maxim, dp[x][2]);
      |                            ~~~~~~~^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 2 ms 4940 KB Output is correct
5 Correct 3 ms 5020 KB Output is correct
6 Correct 3 ms 5020 KB Output is correct
7 Correct 3 ms 5020 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 3 ms 4940 KB Output is correct
10 Correct 3 ms 5020 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 3 ms 5068 KB Output is correct
13 Correct 3 ms 5068 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 5016 KB Output is correct
16 Correct 2 ms 4940 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 2 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 4 ms 4940 KB Output is correct
21 Correct 3 ms 5020 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 2 ms 4940 KB Output is correct
5 Correct 3 ms 5020 KB Output is correct
6 Correct 3 ms 5020 KB Output is correct
7 Correct 3 ms 5020 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 3 ms 4940 KB Output is correct
10 Correct 3 ms 5020 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 3 ms 5068 KB Output is correct
13 Correct 3 ms 5068 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 5016 KB Output is correct
16 Correct 2 ms 4940 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 2 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 4 ms 4940 KB Output is correct
21 Correct 3 ms 5020 KB Output is correct
22 Correct 3 ms 5068 KB Output is correct
23 Correct 3 ms 5060 KB Output is correct
24 Correct 3 ms 5068 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 3 ms 5068 KB Output is correct
27 Correct 3 ms 5024 KB Output is correct
28 Correct 3 ms 5108 KB Output is correct
29 Correct 3 ms 5160 KB Output is correct
30 Correct 3 ms 5144 KB Output is correct
31 Correct 4 ms 5068 KB Output is correct
32 Correct 4 ms 5068 KB Output is correct
33 Correct 3 ms 5088 KB Output is correct
34 Correct 3 ms 5068 KB Output is correct
35 Correct 3 ms 5036 KB Output is correct
36 Correct 4 ms 5068 KB Output is correct
37 Correct 4 ms 5128 KB Output is correct
38 Correct 4 ms 5040 KB Output is correct
39 Correct 4 ms 5068 KB Output is correct
40 Correct 4 ms 5068 KB Output is correct
41 Correct 4 ms 5164 KB Output is correct
42 Correct 3 ms 5068 KB Output is correct
43 Correct 3 ms 5036 KB Output is correct
44 Correct 3 ms 5068 KB Output is correct
45 Correct 3 ms 5068 KB Output is correct
46 Correct 3 ms 5068 KB Output is correct
47 Correct 4 ms 5036 KB Output is correct
48 Correct 3 ms 5176 KB Output is correct
49 Correct 3 ms 5160 KB Output is correct
50 Correct 4 ms 5164 KB Output is correct
51 Correct 3 ms 5204 KB Output is correct
52 Correct 3 ms 5036 KB Output is correct
53 Correct 3 ms 5048 KB Output is correct
54 Correct 3 ms 5068 KB Output is correct
55 Correct 3 ms 5040 KB Output is correct
56 Correct 3 ms 5068 KB Output is correct
57 Correct 3 ms 5196 KB Output is correct
58 Correct 3 ms 5068 KB Output is correct
59 Correct 3 ms 5032 KB Output is correct
60 Correct 3 ms 5156 KB Output is correct
61 Correct 4 ms 5076 KB Output is correct
62 Correct 3 ms 5196 KB Output is correct
63 Correct 3 ms 5028 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4940 KB Output is correct
2 Correct 3 ms 4940 KB Output is correct
3 Correct 2 ms 4940 KB Output is correct
4 Correct 2 ms 4940 KB Output is correct
5 Correct 3 ms 5020 KB Output is correct
6 Correct 3 ms 5020 KB Output is correct
7 Correct 3 ms 5020 KB Output is correct
8 Correct 3 ms 4940 KB Output is correct
9 Correct 3 ms 4940 KB Output is correct
10 Correct 3 ms 5020 KB Output is correct
11 Correct 3 ms 4940 KB Output is correct
12 Correct 3 ms 5068 KB Output is correct
13 Correct 3 ms 5068 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 5016 KB Output is correct
16 Correct 2 ms 4940 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 2 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 4 ms 4940 KB Output is correct
21 Correct 3 ms 5020 KB Output is correct
22 Correct 3 ms 5068 KB Output is correct
23 Correct 3 ms 5060 KB Output is correct
24 Correct 3 ms 5068 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 3 ms 5068 KB Output is correct
27 Correct 3 ms 5024 KB Output is correct
28 Correct 3 ms 5108 KB Output is correct
29 Correct 3 ms 5160 KB Output is correct
30 Correct 3 ms 5144 KB Output is correct
31 Correct 4 ms 5068 KB Output is correct
32 Correct 4 ms 5068 KB Output is correct
33 Correct 3 ms 5088 KB Output is correct
34 Correct 3 ms 5068 KB Output is correct
35 Correct 3 ms 5036 KB Output is correct
36 Correct 4 ms 5068 KB Output is correct
37 Correct 4 ms 5128 KB Output is correct
38 Correct 4 ms 5040 KB Output is correct
39 Correct 4 ms 5068 KB Output is correct
40 Correct 4 ms 5068 KB Output is correct
41 Correct 4 ms 5164 KB Output is correct
42 Correct 3 ms 5068 KB Output is correct
43 Correct 3 ms 5036 KB Output is correct
44 Correct 3 ms 5068 KB Output is correct
45 Correct 3 ms 5068 KB Output is correct
46 Correct 3 ms 5068 KB Output is correct
47 Correct 4 ms 5036 KB Output is correct
48 Correct 3 ms 5176 KB Output is correct
49 Correct 3 ms 5160 KB Output is correct
50 Correct 4 ms 5164 KB Output is correct
51 Correct 3 ms 5204 KB Output is correct
52 Correct 3 ms 5036 KB Output is correct
53 Correct 3 ms 5048 KB Output is correct
54 Correct 3 ms 5068 KB Output is correct
55 Correct 3 ms 5040 KB Output is correct
56 Correct 3 ms 5068 KB Output is correct
57 Correct 3 ms 5196 KB Output is correct
58 Correct 3 ms 5068 KB Output is correct
59 Correct 3 ms 5032 KB Output is correct
60 Correct 3 ms 5156 KB Output is correct
61 Correct 4 ms 5076 KB Output is correct
62 Correct 3 ms 5196 KB Output is correct
63 Correct 3 ms 5028 KB Output is correct
64 Correct 126 ms 15960 KB Output is correct
65 Correct 126 ms 16000 KB Output is correct
66 Correct 123 ms 15948 KB Output is correct
67 Correct 132 ms 15916 KB Output is correct
68 Correct 114 ms 15864 KB Output is correct
69 Correct 113 ms 15980 KB Output is correct
70 Correct 109 ms 15892 KB Output is correct
71 Correct 111 ms 15868 KB Output is correct
72 Correct 110 ms 15996 KB Output is correct
73 Correct 146 ms 31132 KB Output is correct
74 Correct 137 ms 31040 KB Output is correct
75 Correct 107 ms 15756 KB Output is correct
76 Correct 130 ms 15844 KB Output is correct
77 Correct 120 ms 15920 KB Output is correct
78 Correct 122 ms 15848 KB Output is correct
79 Correct 119 ms 15768 KB Output is correct
80 Correct 110 ms 15872 KB Output is correct
81 Correct 90 ms 16296 KB Output is correct
82 Correct 125 ms 15968 KB Output is correct
83 Correct 118 ms 22016 KB Output is correct
84 Correct 126 ms 24664 KB Output is correct
85 Correct 126 ms 24228 KB Output is correct
86 Correct 124 ms 17536 KB Output is correct
87 Correct 115 ms 16796 KB Output is correct
88 Correct 117 ms 17332 KB Output is correct
89 Correct 108 ms 17248 KB Output is correct
90 Correct 151 ms 17024 KB Output is correct
91 Correct 114 ms 17340 KB Output is correct
92 Correct 118 ms 17872 KB Output is correct
93 Correct 109 ms 20684 KB Output is correct
94 Correct 99 ms 22784 KB Output is correct
95 Correct 100 ms 21092 KB Output is correct
96 Correct 124 ms 19008 KB Output is correct
97 Correct 104 ms 17116 KB Output is correct
98 Correct 122 ms 16524 KB Output is correct
99 Correct 104 ms 16256 KB Output is correct
100 Correct 109 ms 20060 KB Output is correct
101 Correct 110 ms 17724 KB Output is correct
102 Correct 100 ms 16808 KB Output is correct
103 Correct 109 ms 16488 KB Output is correct
104 Correct 62 ms 16824 KB Output is correct
105 Correct 127 ms 27268 KB Output is correct
106 Correct 95 ms 16696 KB Output is correct
107 Correct 66 ms 16692 KB Output is correct
108 Correct 175 ms 32016 KB Output is correct
109 Correct 65 ms 16772 KB Output is correct
110 Correct 130 ms 32328 KB Output is correct
111 Correct 98 ms 15760 KB Output is correct