oj.uz

Submission #1095377

# Submission time Handle Problem Language Result Execution time Memory
1095377 2024-10-02T02:46:03 Z ro9669 Power Plant (JOI20_power) C++17
100 / 100
 79 ms 28876 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
#define all(v) v.begin() , v.end()
#define sz(v) int(v.size())
#define unq(v) sort(all(v)); v.resize(unique(all(v)) - v.begin());
using namespace std;

typedef long long ll;
typedef pair<int , int> ii;
typedef pair<long long , int> lli;

const int maxN = int(2e5)+7;
const int inf = int(1e9)+7;

int n;
vector<int> g[maxN];
string s;
int dp[maxN] , ans = -inf;

void dfs(int u , int par){
    dp[u] = (s[u] - '0');
    int preSum = 0;
    for (int v : g[u]){
        if (v != par){
            dfs(v , u);
            preSum += max(dp[v] , 0);
            ans = max(ans , dp[v] + (s[u] - '0'));
        }
    }
    ans = max(ans , preSum - (s[u] - '0'));
    ans = max(ans , s[u] - '0');
    for (int v : g[u]){
        if (v != par){
            dp[u] = max(dp[u], preSum - max(dp[v] , 0) + dp[v] - (s[u] - '0'));
        }
    }
}

void solve(){
    cin >> n;
    //assert(n <= 2000);
    for (int i = 1 ; i < n ; i++){
        int u , v;
        cin >> u >> v;
        g[u].push_back(v);
        g[v].push_back(u);
    }
    cin >> s; s = '#' + s;
    for (int i = 1 ; i <= n ; i++){
        dfs(i , 0);
        break;
    }
    cout << ans << "\n";
}

#define name "A"

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    if (fopen(name".INP" , "r")){
        freopen(name".INP" , "r" , stdin);
        freopen(name".OUT" , "w" , stdout);
    }
    int t = 1; //cin >> t;
    while (t--) solve();
    return 0;
}

Compilation message

power.cpp: In function 'int main()':
power.cpp:62:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |         freopen(name".INP" , "r" , stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
power.cpp:63:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |         freopen(name".OUT" , "w" , stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 2 ms 4952 KB Output is correct
3 Correct 2 ms 4956 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 4956 KB Output is correct
7 Correct 2 ms 4952 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 5156 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 3 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 4952 KB Output is correct
19 Correct 2 ms 4952 KB Output is correct
20 Correct 2 ms 4956 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 2 ms 4952 KB Output is correct
3 Correct 2 ms 4956 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 4956 KB Output is correct
7 Correct 2 ms 4952 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 5156 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 3 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 4952 KB Output is correct
19 Correct 2 ms 4952 KB Output is correct
20 Correct 2 ms 4956 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct
22 Correct 2 ms 5208 KB Output is correct
23 Correct 3 ms 5172 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 3 ms 5208 KB Output is correct
28 Correct 3 ms 5016 KB Output is correct
29 Correct 3 ms 5244 KB Output is correct
30 Correct 3 ms 5212 KB Output is correct
31 Correct 2 ms 5212 KB Output is correct
32 Correct 3 ms 5212 KB Output is correct
33 Correct 4 ms 5164 KB Output is correct
34 Correct 2 ms 5212 KB Output is correct
35 Correct 3 ms 5156 KB Output is correct
36 Correct 2 ms 5256 KB Output is correct
37 Correct 2 ms 5172 KB Output is correct
38 Correct 3 ms 5212 KB Output is correct
39 Correct 2 ms 5168 KB Output is correct
40 Correct 2 ms 5276 KB Output is correct
41 Correct 3 ms 5212 KB Output is correct
42 Correct 4 ms 5468 KB Output is correct
43 Correct 2 ms 5212 KB Output is correct
44 Correct 2 ms 5212 KB Output is correct
45 Correct 2 ms 5212 KB Output is correct
46 Correct 2 ms 5212 KB Output is correct
47 Correct 4 ms 5212 KB Output is correct
48 Correct 2 ms 5212 KB Output is correct
49 Correct 2 ms 5212 KB Output is correct
50 Correct 4 ms 5212 KB Output is correct
51 Correct 4 ms 5212 KB Output is correct
52 Correct 3 ms 5212 KB Output is correct
53 Correct 3 ms 5212 KB Output is correct
54 Correct 2 ms 5212 KB Output is correct
55 Correct 2 ms 5216 KB Output is correct
56 Correct 3 ms 5212 KB Output is correct
57 Correct 2 ms 5212 KB Output is correct
58 Correct 3 ms 5212 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 5240 KB Output is correct
63 Correct 3 ms 5212 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 2 ms 4952 KB Output is correct
3 Correct 2 ms 4956 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 4956 KB Output is correct
7 Correct 2 ms 4952 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 5156 KB Output is correct
10 Correct 2 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 3 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 4952 KB Output is correct
19 Correct 2 ms 4952 KB Output is correct
20 Correct 2 ms 4956 KB Output is correct
21 Correct 2 ms 4956 KB Output is correct
22 Correct 2 ms 5208 KB Output is correct
23 Correct 3 ms 5172 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 3 ms 5208 KB Output is correct
28 Correct 3 ms 5016 KB Output is correct
29 Correct 3 ms 5244 KB Output is correct
30 Correct 3 ms 5212 KB Output is correct
31 Correct 2 ms 5212 KB Output is correct
32 Correct 3 ms 5212 KB Output is correct
33 Correct 4 ms 5164 KB Output is correct
34 Correct 2 ms 5212 KB Output is correct
35 Correct 3 ms 5156 KB Output is correct
36 Correct 2 ms 5256 KB Output is correct
37 Correct 2 ms 5172 KB Output is correct
38 Correct 3 ms 5212 KB Output is correct
39 Correct 2 ms 5168 KB Output is correct
40 Correct 2 ms 5276 KB Output is correct
41 Correct 3 ms 5212 KB Output is correct
42 Correct 4 ms 5468 KB Output is correct
43 Correct 2 ms 5212 KB Output is correct
44 Correct 2 ms 5212 KB Output is correct
45 Correct 2 ms 5212 KB Output is correct
46 Correct 2 ms 5212 KB Output is correct
47 Correct 4 ms 5212 KB Output is correct
48 Correct 2 ms 5212 KB Output is correct
49 Correct 2 ms 5212 KB Output is correct
50 Correct 4 ms 5212 KB Output is correct
51 Correct 4 ms 5212 KB Output is correct
52 Correct 3 ms 5212 KB Output is correct
53 Correct 3 ms 5212 KB Output is correct
54 Correct 2 ms 5212 KB Output is correct
55 Correct 2 ms 5216 KB Output is correct
56 Correct 3 ms 5212 KB Output is correct
57 Correct 2 ms 5212 KB Output is correct
58 Correct 3 ms 5212 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 5240 KB Output is correct
63 Correct 3 ms 5212 KB Output is correct
64 Correct 58 ms 15316 KB Output is correct
65 Correct 58 ms 15312 KB Output is correct
66 Correct 57 ms 15292 KB Output is correct
67 Correct 58 ms 15304 KB Output is correct
68 Correct 58 ms 15292 KB Output is correct
69 Correct 57 ms 15308 KB Output is correct
70 Correct 58 ms 15328 KB Output is correct
71 Correct 58 ms 15328 KB Output is correct
72 Correct 58 ms 15332 KB Output is correct
73 Correct 68 ms 27768 KB Output is correct
74 Correct 79 ms 28116 KB Output is correct
75 Correct 57 ms 15048 KB Output is correct
76 Correct 56 ms 15036 KB Output is correct
77 Correct 60 ms 15060 KB Output is correct
78 Correct 56 ms 15052 KB Output is correct
79 Correct 57 ms 15056 KB Output is correct
80 Correct 58 ms 15052 KB Output is correct
81 Correct 50 ms 15632 KB Output is correct
82 Correct 55 ms 15240 KB Output is correct
83 Correct 63 ms 20436 KB Output is correct
84 Correct 66 ms 22360 KB Output is correct
85 Correct 64 ms 22240 KB Output is correct
86 Correct 62 ms 16588 KB Output is correct
87 Correct 62 ms 16012 KB Output is correct
88 Correct 60 ms 16392 KB Output is correct
89 Correct 67 ms 16348 KB Output is correct
90 Correct 59 ms 16172 KB Output is correct
91 Correct 63 ms 16556 KB Output is correct
92 Correct 64 ms 16892 KB Output is correct
93 Correct 57 ms 19064 KB Output is correct
94 Correct 57 ms 20940 KB Output is correct
95 Correct 54 ms 19684 KB Output is correct
96 Correct 60 ms 17716 KB Output is correct
97 Correct 57 ms 16168 KB Output is correct
98 Correct 54 ms 15872 KB Output is correct
99 Correct 54 ms 15560 KB Output is correct
100 Correct 58 ms 18764 KB Output is correct
101 Correct 56 ms 16800 KB Output is correct
102 Correct 53 ms 15888 KB Output is correct
103 Correct 54 ms 15852 KB Output is correct
104 Correct 38 ms 16208 KB Output is correct
105 Correct 65 ms 24748 KB Output is correct
106 Correct 38 ms 16080 KB Output is correct
107 Correct 39 ms 16000 KB Output is correct
108 Correct 69 ms 28624 KB Output is correct
109 Correct 39 ms 16072 KB Output is correct
110 Correct 66 ms 28876 KB Output is correct
111 Correct 52 ms 15072 KB Output is correct