oj.uz

Submission #629362

# Submission time Handle Problem Language Result Execution time Memory
629362 2022-08-14T12:20:30 Z urosk Power Plant (JOI20_power) C++14
100 / 100
 142 ms 35260 KB 
#define here cerr<<"===========================================\n"
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll long long
#define llinf 100000000000000000LL // 10^17
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) (ll)(a.size())
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {cerr<<#a<<": ";for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
#define daj_mi_malo_vremena ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);

using namespace std;
using namespace __gnu_pbds;
/*
ll add(ll x,ll y){
    x+=y;
    if(x<0){
        x%=mod;
        x+=mod;
    }else{
        if(x>=mod) x%=mod;
    }
    return x;
}
ll mul(ll a,ll b){
	ll ans = (a*b)%mod;
	if(ans<0) ans+=mod;
	return ans;
}
*/
typedef tree<int,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
typedef tree<int,null_type,less_equal<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_multiset;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
ll rnd(ll l,ll r){
    return uniform_int_distribution<ll>(l,r)(rng);
}
#define maxn 200005
ll n;
vector<ll> g[maxn];
ll c[maxn];
ll dp[maxn][2];
void dfs(ll u,ll p){
    ll mx = 0;
    ll mx1 = 0;
    ll mx0 = 0;
    ll sum = 0;
    for(ll s : g[u]){
        if(s==p) continue;
        dfs(s,u);
        mx = max({mx,dp[s][0],dp[s][1]-1});
        mx1 = max(mx1,dp[s][1]);
        mx0 = max(mx0,dp[s][0]);
        sum+=dp[s][0];
    }
    dp[u][0] = max(sum-c[u],c[u]);
    if(c[u]&&mx!=0) dp[u][1] = mx + c[u];
    else dp[u][1] = mx1;
    //cerr<<"u: " <<u<< " "<< c[u]<< " "<<dp[u][0]<< " "<<dp[u][1]<<endl;
}
int main(){
	daj_mi_malo_vremena
    cin >> n;
    for(ll i = 1;i<=n-1;i++){
        ll x,y; cin >> x >> y;
        g[x].pb(y); g[y].pb(x);
    }
    ll sum = 0;
    {
        string s; cin >> s;
        for(ll i = 1;i<=n;i++) c[i] = s[i-1]-'0';
        for(ll i = 1;i<=n;i++) sum+=c[i];
    }
    if(sum==0){cout<<0<<endl; return 0;}
    dfs(1,1);
    //ceri(c,1,n);
    //for(ll i = 1;i<=n;i++) cerr<<dp[i][0]<< " ";
    //cerr<<endl;
    //for(ll i = 1;i<=n;i++) cerr<<dp[i][1]<< " ";
    //cerr<<endl;
    cout<<max({1LL,dp[1][0],dp[1][1]})<<endl;
	return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 4 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 4 ms 5076 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5028 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 5028 KB Output is correct
18 Correct 3 ms 5024 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5028 KB Output is correct
21 Correct 3 ms 5024 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 4 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 4 ms 5076 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5028 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 5028 KB Output is correct
18 Correct 3 ms 5024 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5028 KB Output is correct
21 Correct 3 ms 5024 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 4 ms 5076 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 5 ms 5076 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 3 ms 5168 KB Output is correct
28 Correct 3 ms 5076 KB Output is correct
29 Correct 3 ms 5204 KB Output is correct
30 Correct 4 ms 5148 KB Output is correct
31 Correct 3 ms 5076 KB Output is correct
32 Correct 3 ms 5076 KB Output is correct
33 Correct 4 ms 5168 KB Output is correct
34 Correct 5 ms 5172 KB Output is correct
35 Correct 4 ms 5168 KB Output is correct
36 Correct 4 ms 5168 KB Output is correct
37 Correct 4 ms 5076 KB Output is correct
38 Correct 4 ms 5076 KB Output is correct
39 Correct 3 ms 5164 KB Output is correct
40 Correct 3 ms 5208 KB Output is correct
41 Correct 4 ms 5204 KB Output is correct
42 Correct 4 ms 5204 KB Output is correct
43 Correct 5 ms 5096 KB Output is correct
44 Correct 4 ms 5204 KB Output is correct
45 Correct 3 ms 5204 KB Output is correct
46 Correct 3 ms 5180 KB Output is correct
47 Correct 3 ms 5076 KB Output is correct
48 Correct 3 ms 5204 KB Output is correct
49 Correct 4 ms 5168 KB Output is correct
50 Correct 3 ms 5204 KB Output is correct
51 Correct 5 ms 5204 KB Output is correct
52 Correct 4 ms 5168 KB Output is correct
53 Correct 3 ms 5204 KB Output is correct
54 Correct 4 ms 5204 KB Output is correct
55 Correct 3 ms 5204 KB Output is correct
56 Correct 3 ms 5192 KB Output is correct
57 Correct 3 ms 5332 KB Output is correct
58 Correct 4 ms 5172 KB Output is correct
59 Correct 4 ms 5076 KB Output is correct
60 Correct 4 ms 5148 KB Output is correct
61 Correct 3 ms 5160 KB Output is correct
62 Correct 4 ms 5292 KB Output is correct
63 Correct 4 ms 5172 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 4 ms 4948 KB Output is correct
7 Correct 2 ms 4948 KB Output is correct
8 Correct 3 ms 4948 KB Output is correct
9 Correct 4 ms 5076 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 3 ms 4948 KB Output is correct
13 Correct 3 ms 4948 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5028 KB Output is correct
16 Correct 3 ms 4948 KB Output is correct
17 Correct 3 ms 5028 KB Output is correct
18 Correct 3 ms 5024 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5028 KB Output is correct
21 Correct 3 ms 5024 KB Output is correct
22 Correct 4 ms 5076 KB Output is correct
23 Correct 4 ms 5076 KB Output is correct
24 Correct 4 ms 5076 KB Output is correct
25 Correct 5 ms 5076 KB Output is correct
26 Correct 3 ms 5076 KB Output is correct
27 Correct 3 ms 5168 KB Output is correct
28 Correct 3 ms 5076 KB Output is correct
29 Correct 3 ms 5204 KB Output is correct
30 Correct 4 ms 5148 KB Output is correct
31 Correct 3 ms 5076 KB Output is correct
32 Correct 3 ms 5076 KB Output is correct
33 Correct 4 ms 5168 KB Output is correct
34 Correct 5 ms 5172 KB Output is correct
35 Correct 4 ms 5168 KB Output is correct
36 Correct 4 ms 5168 KB Output is correct
37 Correct 4 ms 5076 KB Output is correct
38 Correct 4 ms 5076 KB Output is correct
39 Correct 3 ms 5164 KB Output is correct
40 Correct 3 ms 5208 KB Output is correct
41 Correct 4 ms 5204 KB Output is correct
42 Correct 4 ms 5204 KB Output is correct
43 Correct 5 ms 5096 KB Output is correct
44 Correct 4 ms 5204 KB Output is correct
45 Correct 3 ms 5204 KB Output is correct
46 Correct 3 ms 5180 KB Output is correct
47 Correct 3 ms 5076 KB Output is correct
48 Correct 3 ms 5204 KB Output is correct
49 Correct 4 ms 5168 KB Output is correct
50 Correct 3 ms 5204 KB Output is correct
51 Correct 5 ms 5204 KB Output is correct
52 Correct 4 ms 5168 KB Output is correct
53 Correct 3 ms 5204 KB Output is correct
54 Correct 4 ms 5204 KB Output is correct
55 Correct 3 ms 5204 KB Output is correct
56 Correct 3 ms 5192 KB Output is correct
57 Correct 3 ms 5332 KB Output is correct
58 Correct 4 ms 5172 KB Output is correct
59 Correct 4 ms 5076 KB Output is correct
60 Correct 4 ms 5148 KB Output is correct
61 Correct 3 ms 5160 KB Output is correct
62 Correct 4 ms 5292 KB Output is correct
63 Correct 4 ms 5172 KB Output is correct
64 Correct 119 ms 19848 KB Output is correct
65 Correct 129 ms 19992 KB Output is correct
66 Correct 126 ms 19896 KB Output is correct
67 Correct 142 ms 19788 KB Output is correct
68 Correct 124 ms 19880 KB Output is correct
69 Correct 120 ms 19900 KB Output is correct
70 Correct 128 ms 19936 KB Output is correct
71 Correct 126 ms 19796 KB Output is correct
72 Correct 120 ms 19872 KB Output is correct
73 Correct 130 ms 34028 KB Output is correct
74 Correct 138 ms 34084 KB Output is correct
75 Correct 128 ms 21132 KB Output is correct
76 Correct 118 ms 21076 KB Output is correct
77 Correct 120 ms 19812 KB Output is correct
78 Correct 130 ms 19936 KB Output is correct
79 Correct 128 ms 19876 KB Output is correct
80 Correct 131 ms 19808 KB Output is correct
81 Correct 95 ms 20132 KB Output is correct
82 Correct 110 ms 19856 KB Output is correct
83 Correct 132 ms 25952 KB Output is correct
84 Correct 131 ms 28636 KB Output is correct
85 Correct 131 ms 28204 KB Output is correct
86 Correct 120 ms 21484 KB Output is correct
87 Correct 126 ms 20824 KB Output is correct
88 Correct 118 ms 20944 KB Output is correct
89 Correct 113 ms 20920 KB Output is correct
90 Correct 111 ms 20624 KB Output is correct
91 Correct 120 ms 20968 KB Output is correct
92 Correct 117 ms 21324 KB Output is correct
93 Correct 110 ms 23984 KB Output is correct
94 Correct 101 ms 26244 KB Output is correct
95 Correct 101 ms 24544 KB Output is correct
96 Correct 106 ms 22416 KB Output is correct
97 Correct 113 ms 20588 KB Output is correct
98 Correct 114 ms 20132 KB Output is correct
99 Correct 111 ms 19884 KB Output is correct
100 Correct 109 ms 23560 KB Output is correct
101 Correct 113 ms 21060 KB Output is correct
102 Correct 110 ms 20260 KB Output is correct
103 Correct 119 ms 20168 KB Output is correct
104 Correct 68 ms 20760 KB Output is correct
105 Correct 128 ms 30168 KB Output is correct
106 Correct 80 ms 20756 KB Output is correct
107 Correct 73 ms 20640 KB Output is correct
108 Correct 137 ms 34976 KB Output is correct
109 Correct 67 ms 20728 KB Output is correct
110 Correct 129 ms 35260 KB Output is correct
111 Correct 108 ms 19800 KB Output is correct