oj.uz

Submission #1037883

# Submission time Handle Problem Language Result Execution time Memory
1037883 2024-07-29T09:40:05 Z phong Power Plant (JOI20_power) C++17
100 / 100
 68 ms 30800 KB 
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,fma")
//#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>

#define ll long long
#define int long long
const int nmax = 2e5 + 5, N = 1e5;
const ll oo = 1e18;
const int lg = 19, M = 2, mod = 1e6;
#define pii pair<ll, ll>
#define fi first
#define se second
#define debug(a, n) for(int i = 1; i <= n; ++i) cout << a[i] << ' '; cout << "\n";
#define endl "\n"
#define task "code"
using namespace std;

int n;
vector<int> adj[nmax];
int a[nmax], dp[nmax], ans = 0;

void dfs(int u, int p){
    bool ok = 0, ok2 = 0;
    for(auto v : adj[u]){
        if(v == p) continue;
        dfs(v, u);
        dp[u] += dp[v];
        ans = max(ans, dp[v] + a[u]);
    }
    dp[u] -= a[u];
    dp[u] = max(dp[u], a[u]);
    ans = max(ans, dp[u]);
}
main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
////    freopen(task".inp", "r", stdin);
//    freopen(task".out", "w", stdout);
    cin >> n;
    for(int i = 1; i < n; ++i){
        int u, v;
        cin >> u >> v;
        adj[u].push_back(v);
        adj[v].push_back(u);
    }
    for(int i = 1; i <= n; ++i){
        char x;
        cin >> x;
        a[i] = (x == '1');
    }
    dfs(1, -1);
//    debug(a, n);
    cout << ans;
}
/*
4 3
0 1 1
1 1 0
0 0 0
0 0 0
5
2 2
1 3
3 2
4 3
1 3


*/

Compilation message

power.cpp: In function 'void dfs(long long int, long long int)':
power.cpp:24:10: warning: unused variable 'ok' [-Wunused-variable]
   24 |     bool ok = 0, ok2 = 0;
      |          ^~
power.cpp:24:18: warning: unused variable 'ok2' [-Wunused-variable]
   24 |     bool ok = 0, ok2 = 0;
      |                  ^~~
power.cpp: At global scope:
power.cpp:35:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   35 | main(){
      | ^~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8028 KB Output is correct
2 Correct 1 ms 8028 KB Output is correct
3 Correct 2 ms 8040 KB Output is correct
4 Correct 1 ms 8028 KB Output is correct
5 Correct 1 ms 8024 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8024 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8028 KB Output is correct
10 Correct 2 ms 8100 KB Output is correct
11 Correct 2 ms 8028 KB Output is correct
12 Correct 1 ms 8028 KB Output is correct
13 Correct 2 ms 8028 KB Output is correct
14 Correct 1 ms 8104 KB Output is correct
15 Correct 1 ms 8028 KB Output is correct
16 Correct 1 ms 8028 KB Output is correct
17 Correct 1 ms 8028 KB Output is correct
18 Correct 1 ms 8028 KB Output is correct
19 Correct 2 ms 8028 KB Output is correct
20 Correct 2 ms 8028 KB Output is correct
21 Correct 1 ms 8028 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8028 KB Output is correct
2 Correct 1 ms 8028 KB Output is correct
3 Correct 2 ms 8040 KB Output is correct
4 Correct 1 ms 8028 KB Output is correct
5 Correct 1 ms 8024 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8024 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8028 KB Output is correct
10 Correct 2 ms 8100 KB Output is correct
11 Correct 2 ms 8028 KB Output is correct
12 Correct 1 ms 8028 KB Output is correct
13 Correct 2 ms 8028 KB Output is correct
14 Correct 1 ms 8104 KB Output is correct
15 Correct 1 ms 8028 KB Output is correct
16 Correct 1 ms 8028 KB Output is correct
17 Correct 1 ms 8028 KB Output is correct
18 Correct 1 ms 8028 KB Output is correct
19 Correct 2 ms 8028 KB Output is correct
20 Correct 2 ms 8028 KB Output is correct
21 Correct 1 ms 8028 KB Output is correct
22 Correct 2 ms 8028 KB Output is correct
23 Correct 3 ms 8028 KB Output is correct
24 Correct 2 ms 8028 KB Output is correct
25 Correct 2 ms 8028 KB Output is correct
26 Correct 2 ms 8028 KB Output is correct
27 Correct 2 ms 8028 KB Output is correct
28 Correct 2 ms 8028 KB Output is correct
29 Correct 2 ms 8284 KB Output is correct
30 Correct 2 ms 8284 KB Output is correct
31 Correct 2 ms 8024 KB Output is correct
32 Correct 2 ms 8028 KB Output is correct
33 Correct 2 ms 8028 KB Output is correct
34 Correct 2 ms 8028 KB Output is correct
35 Correct 2 ms 8116 KB Output is correct
36 Correct 2 ms 8028 KB Output is correct
37 Correct 2 ms 8108 KB Output is correct
38 Correct 2 ms 8024 KB Output is correct
39 Correct 2 ms 8396 KB Output is correct
40 Correct 2 ms 8024 KB Output is correct
41 Correct 2 ms 8024 KB Output is correct
42 Correct 2 ms 8024 KB Output is correct
43 Correct 2 ms 8028 KB Output is correct
44 Correct 2 ms 8028 KB Output is correct
45 Correct 2 ms 8028 KB Output is correct
46 Correct 2 ms 8028 KB Output is correct
47 Correct 2 ms 8028 KB Output is correct
48 Correct 2 ms 8284 KB Output is correct
49 Correct 2 ms 8284 KB Output is correct
50 Correct 2 ms 8112 KB Output is correct
51 Correct 2 ms 8196 KB Output is correct
52 Correct 2 ms 8028 KB Output is correct
53 Correct 2 ms 8028 KB Output is correct
54 Correct 2 ms 8028 KB Output is correct
55 Correct 2 ms 8028 KB Output is correct
56 Correct 2 ms 8028 KB Output is correct
57 Correct 2 ms 8284 KB Output is correct
58 Correct 2 ms 8028 KB Output is correct
59 Correct 2 ms 8028 KB Output is correct
60 Correct 2 ms 8028 KB Output is correct
61 Correct 2 ms 8028 KB Output is correct
62 Correct 2 ms 8284 KB Output is correct
63 Correct 2 ms 8024 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8028 KB Output is correct
2 Correct 1 ms 8028 KB Output is correct
3 Correct 2 ms 8040 KB Output is correct
4 Correct 1 ms 8028 KB Output is correct
5 Correct 1 ms 8024 KB Output is correct
6 Correct 2 ms 8028 KB Output is correct
7 Correct 2 ms 8024 KB Output is correct
8 Correct 2 ms 8028 KB Output is correct
9 Correct 2 ms 8028 KB Output is correct
10 Correct 2 ms 8100 KB Output is correct
11 Correct 2 ms 8028 KB Output is correct
12 Correct 1 ms 8028 KB Output is correct
13 Correct 2 ms 8028 KB Output is correct
14 Correct 1 ms 8104 KB Output is correct
15 Correct 1 ms 8028 KB Output is correct
16 Correct 1 ms 8028 KB Output is correct
17 Correct 1 ms 8028 KB Output is correct
18 Correct 1 ms 8028 KB Output is correct
19 Correct 2 ms 8028 KB Output is correct
20 Correct 2 ms 8028 KB Output is correct
21 Correct 1 ms 8028 KB Output is correct
22 Correct 2 ms 8028 KB Output is correct
23 Correct 3 ms 8028 KB Output is correct
24 Correct 2 ms 8028 KB Output is correct
25 Correct 2 ms 8028 KB Output is correct
26 Correct 2 ms 8028 KB Output is correct
27 Correct 2 ms 8028 KB Output is correct
28 Correct 2 ms 8028 KB Output is correct
29 Correct 2 ms 8284 KB Output is correct
30 Correct 2 ms 8284 KB Output is correct
31 Correct 2 ms 8024 KB Output is correct
32 Correct 2 ms 8028 KB Output is correct
33 Correct 2 ms 8028 KB Output is correct
34 Correct 2 ms 8028 KB Output is correct
35 Correct 2 ms 8116 KB Output is correct
36 Correct 2 ms 8028 KB Output is correct
37 Correct 2 ms 8108 KB Output is correct
38 Correct 2 ms 8024 KB Output is correct
39 Correct 2 ms 8396 KB Output is correct
40 Correct 2 ms 8024 KB Output is correct
41 Correct 2 ms 8024 KB Output is correct
42 Correct 2 ms 8024 KB Output is correct
43 Correct 2 ms 8028 KB Output is correct
44 Correct 2 ms 8028 KB Output is correct
45 Correct 2 ms 8028 KB Output is correct
46 Correct 2 ms 8028 KB Output is correct
47 Correct 2 ms 8028 KB Output is correct
48 Correct 2 ms 8284 KB Output is correct
49 Correct 2 ms 8284 KB Output is correct
50 Correct 2 ms 8112 KB Output is correct
51 Correct 2 ms 8196 KB Output is correct
52 Correct 2 ms 8028 KB Output is correct
53 Correct 2 ms 8028 KB Output is correct
54 Correct 2 ms 8028 KB Output is correct
55 Correct 2 ms 8028 KB Output is correct
56 Correct 2 ms 8028 KB Output is correct
57 Correct 2 ms 8284 KB Output is correct
58 Correct 2 ms 8028 KB Output is correct
59 Correct 2 ms 8028 KB Output is correct
60 Correct 2 ms 8028 KB Output is correct
61 Correct 2 ms 8028 KB Output is correct
62 Correct 2 ms 8284 KB Output is correct
63 Correct 2 ms 8024 KB Output is correct
64 Correct 59 ms 18260 KB Output is correct
65 Correct 58 ms 18256 KB Output is correct
66 Correct 54 ms 18256 KB Output is correct
67 Correct 60 ms 18260 KB Output is correct
68 Correct 52 ms 18256 KB Output is correct
69 Correct 53 ms 18268 KB Output is correct
70 Correct 60 ms 18260 KB Output is correct
71 Correct 53 ms 18332 KB Output is correct
72 Correct 51 ms 18256 KB Output is correct
73 Correct 61 ms 29864 KB Output is correct
74 Correct 63 ms 29776 KB Output is correct
75 Correct 54 ms 19540 KB Output is correct
76 Correct 54 ms 19424 KB Output is correct
77 Correct 56 ms 18260 KB Output is correct
78 Correct 56 ms 18260 KB Output is correct
79 Correct 61 ms 18372 KB Output is correct
80 Correct 53 ms 18256 KB Output is correct
81 Correct 47 ms 18308 KB Output is correct
82 Correct 55 ms 18124 KB Output is correct
83 Correct 55 ms 23376 KB Output is correct
84 Correct 68 ms 25632 KB Output is correct
85 Correct 60 ms 25012 KB Output is correct
86 Correct 53 ms 19672 KB Output is correct
87 Correct 54 ms 19040 KB Output is correct
88 Correct 55 ms 19176 KB Output is correct
89 Correct 53 ms 19036 KB Output is correct
90 Correct 59 ms 19028 KB Output is correct
91 Correct 54 ms 19204 KB Output is correct
92 Correct 52 ms 19540 KB Output is correct
93 Correct 51 ms 21452 KB Output is correct
94 Correct 52 ms 23236 KB Output is correct
95 Correct 50 ms 21952 KB Output is correct
96 Correct 55 ms 20304 KB Output is correct
97 Correct 52 ms 18772 KB Output is correct
98 Correct 49 ms 18256 KB Output is correct
99 Correct 51 ms 18260 KB Output is correct
100 Correct 54 ms 21192 KB Output is correct
101 Correct 53 ms 19216 KB Output is correct
102 Correct 48 ms 18568 KB Output is correct
103 Correct 51 ms 18416 KB Output is correct
104 Correct 37 ms 18892 KB Output is correct
105 Correct 59 ms 26716 KB Output is correct
106 Correct 36 ms 18624 KB Output is correct
107 Correct 41 ms 18624 KB Output is correct
108 Correct 61 ms 30544 KB Output is correct
109 Correct 37 ms 18880 KB Output is correct
110 Correct 60 ms 30800 KB Output is correct
111 Correct 48 ms 18260 KB Output is correct