oj.uz

Submission #306610

# Submission time Handle Problem Language Result Execution time Memory
306610 2020-09-26T02:47:46 Z laoriu Election Campaign (JOI15_election_campaign) C++14
100 / 100
 354 ms 36088 KB 
#define X first
#define Y second
#define pb push_back
#include<bits/stdc++.h>
using namespace std;

typedef pair < int, int > ii;
typedef pair < ii , int > iii;
using ll = long long;
using ld = long double;

const ll MAX=100003,inf=1e18;
vector < int > pr[MAX];
int par[18][MAX];
int F[18][MAX];
int h[MAX];
int dp[MAX];
int sum[MAX];
void DFS(int v,int trc){
    for(int u:pr[v]) if(u!=trc){
        par[0][u]=v;
        h[u]=h[v]+1;
        DFS(u,v);
    }
}
int jump(int v,int d){
    for(int i= 17;i>=0;i--)if(d&(1<<i))
        v=par[i][v];
    return v;
}
int cnt(int i,int v){
    if(F[i][v]!=-1) return F[i][v];
    else return F[i][v]=cnt(i-1,v)+cnt(i-1,par[i-1][v]);
}
int getup(int v,int d){
    int ans=0;
    for(int i=17;i>=0;i--)if(d&(1<<i)){
        ans+=cnt(i,v);
        v=par[i][v];
    }
    return ans;
}
int lca(int u,int v){
    v=jump(v,h[v]-h[u]);
    if(u==v) return u;
    for(int i=17;i>=0;i--)if(par[i][u]!=par[i][v]) {
        u=par[i][u];v=par[i][v];
    }
    return par[0][u];
}
struct path{
    int x,y,c;
    path(){}
    path(int u1,int u2,int u3){
        x=u1;y=u2;c=u3;
    }
};
vector < path > ad[MAX];
void GO(int v,int trc){
    for(int u:pr[v]) if (u!=trc){
        GO(u,v);
        sum[v]+=dp[u];
    }
    for(int u:pr[v]) if (u!=trc){
        F[0][u]=sum[v]-dp[u];
    }
    dp[v]=sum[v];
    for(path e:ad[v]){
        if(e.x!=v){
            dp[v]=max(dp[v],e.c+getup(e.x,h[e.x]-h[v])+getup(e.y,h[e.y]-h[v])+sum[e.x]+sum[e.y]-sum[v]);
        }

        else dp[v]=max(dp[v],e.c+getup(e.y,h[e.y]-h[v])+sum[e.y]);
    }

}
int main()
{
    ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    //freopen("election.inp","r",stdin);freopen("election.out","w",stdout);
    int n,Q,x,y,c;
    cin>>n;
    memset(F,-1,sizeof F);
    for(int i=1;i<n;i++){
        cin>>x>>y;
        pr[x].pb(y);
        pr[y].pb(x);
    }
    DFS(1,0);
    for(int i=1;i<=17;i++)
        for(int u=1;u<=n;u++)
            par[i][u]=par[i-1][par[i-1][u]];
    cin>>Q;
    while(Q--){
        cin>>x>>y>>c;
        if(h[x]>h[y]) swap(x,y);
        //cout<<x<<' '<<y<<' '<<lca(x,y)<<'\n';
        ad[lca(x,y)].pb(path(x,y,c));
    }
    GO(1,0);
    cout<<dp[1];

}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 8 ms 12160 KB Output is correct
4 Correct 9 ms 12288 KB Output is correct
5 Correct 91 ms 24696 KB Output is correct
6 Correct 54 ms 32376 KB Output is correct
7 Correct 84 ms 29688 KB Output is correct
8 Correct 62 ms 24696 KB Output is correct
9 Correct 85 ms 28172 KB Output is correct
10 Correct 66 ms 24824 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 9 ms 12416 KB Output is correct
4 Correct 135 ms 35704 KB Output is correct
5 Correct 137 ms 35772 KB Output is correct
6 Correct 117 ms 35704 KB Output is correct
7 Correct 135 ms 35832 KB Output is correct
8 Correct 137 ms 35832 KB Output is correct
9 Correct 124 ms 35704 KB Output is correct
10 Correct 138 ms 35736 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 9 ms 12416 KB Output is correct
4 Correct 135 ms 35704 KB Output is correct
5 Correct 137 ms 35772 KB Output is correct
6 Correct 117 ms 35704 KB Output is correct
7 Correct 135 ms 35832 KB Output is correct
8 Correct 137 ms 35832 KB Output is correct
9 Correct 124 ms 35704 KB Output is correct
10 Correct 138 ms 35736 KB Output is correct
11 Correct 18 ms 13184 KB Output is correct
12 Correct 142 ms 36040 KB Output is correct
13 Correct 135 ms 35960 KB Output is correct
14 Correct 132 ms 35960 KB Output is correct
15 Correct 148 ms 35960 KB Output is correct
16 Correct 130 ms 36004 KB Output is correct
17 Correct 146 ms 35960 KB Output is correct
18 Correct 135 ms 35960 KB Output is correct
19 Correct 123 ms 36088 KB Output is correct
20 Correct 134 ms 35964 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 186 ms 27568 KB Output is correct
2 Correct 122 ms 35832 KB Output is correct
3 Correct 338 ms 32632 KB Output is correct
4 Correct 115 ms 27568 KB Output is correct
5 Correct 273 ms 32120 KB Output is correct
6 Correct 116 ms 27632 KB Output is correct
7 Correct 333 ms 31924 KB Output is correct
8 Correct 178 ms 28024 KB Output is correct
9 Correct 119 ms 35728 KB Output is correct
10 Correct 339 ms 30896 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 8 ms 12160 KB Output is correct
4 Correct 9 ms 12288 KB Output is correct
5 Correct 91 ms 24696 KB Output is correct
6 Correct 54 ms 32376 KB Output is correct
7 Correct 84 ms 29688 KB Output is correct
8 Correct 62 ms 24696 KB Output is correct
9 Correct 85 ms 28172 KB Output is correct
10 Correct 66 ms 24824 KB Output is correct
11 Correct 11 ms 12288 KB Output is correct
12 Correct 9 ms 12416 KB Output is correct
13 Correct 9 ms 12416 KB Output is correct
14 Correct 9 ms 12288 KB Output is correct
15 Correct 9 ms 12288 KB Output is correct
16 Correct 9 ms 12288 KB Output is correct
17 Correct 10 ms 12448 KB Output is correct
18 Correct 9 ms 12416 KB Output is correct
19 Correct 9 ms 12288 KB Output is correct
20 Correct 9 ms 12416 KB Output is correct

Subtask #6
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 12160 KB Output is correct
2 Correct 8 ms 12160 KB Output is correct
3 Correct 8 ms 12160 KB Output is correct
4 Correct 9 ms 12288 KB Output is correct
5 Correct 91 ms 24696 KB Output is correct
6 Correct 54 ms 32376 KB Output is correct
7 Correct 84 ms 29688 KB Output is correct
8 Correct 62 ms 24696 KB Output is correct
9 Correct 85 ms 28172 KB Output is correct
10 Correct 66 ms 24824 KB Output is correct
11 Correct 9 ms 12160 KB Output is correct
12 Correct 8 ms 12160 KB Output is correct
13 Correct 9 ms 12416 KB Output is correct
14 Correct 135 ms 35704 KB Output is correct
15 Correct 137 ms 35772 KB Output is correct
16 Correct 117 ms 35704 KB Output is correct
17 Correct 135 ms 35832 KB Output is correct
18 Correct 137 ms 35832 KB Output is correct
19 Correct 124 ms 35704 KB Output is correct
20 Correct 138 ms 35736 KB Output is correct
21 Correct 18 ms 13184 KB Output is correct
22 Correct 142 ms 36040 KB Output is correct
23 Correct 135 ms 35960 KB Output is correct
24 Correct 132 ms 35960 KB Output is correct
25 Correct 148 ms 35960 KB Output is correct
26 Correct 130 ms 36004 KB Output is correct
27 Correct 146 ms 35960 KB Output is correct
28 Correct 135 ms 35960 KB Output is correct
29 Correct 123 ms 36088 KB Output is correct
30 Correct 134 ms 35964 KB Output is correct
31 Correct 186 ms 27568 KB Output is correct
32 Correct 122 ms 35832 KB Output is correct
33 Correct 338 ms 32632 KB Output is correct
34 Correct 115 ms 27568 KB Output is correct
35 Correct 273 ms 32120 KB Output is correct
36 Correct 116 ms 27632 KB Output is correct
37 Correct 333 ms 31924 KB Output is correct
38 Correct 178 ms 28024 KB Output is correct
39 Correct 119 ms 35728 KB Output is correct
40 Correct 339 ms 30896 KB Output is correct
41 Correct 11 ms 12288 KB Output is correct
42 Correct 9 ms 12416 KB Output is correct
43 Correct 9 ms 12416 KB Output is correct
44 Correct 9 ms 12288 KB Output is correct
45 Correct 9 ms 12288 KB Output is correct
46 Correct 9 ms 12288 KB Output is correct
47 Correct 10 ms 12448 KB Output is correct
48 Correct 9 ms 12416 KB Output is correct
49 Correct 9 ms 12288 KB Output is correct
50 Correct 9 ms 12416 KB Output is correct
51 Correct 181 ms 28280 KB Output is correct
52 Correct 143 ms 35960 KB Output is correct
53 Correct 354 ms 31336 KB Output is correct
54 Correct 113 ms 27828 KB Output is correct
55 Correct 190 ms 27984 KB Output is correct
56 Correct 140 ms 36020 KB Output is correct
57 Correct 269 ms 32120 KB Output is correct
58 Correct 122 ms 27856 KB Output is correct
59 Correct 175 ms 28024 KB Output is correct
60 Correct 136 ms 35996 KB Output is correct
61 Correct 273 ms 32176 KB Output is correct
62 Correct 117 ms 27600 KB Output is correct
63 Correct 187 ms 27768 KB Output is correct
64 Correct 142 ms 36088 KB Output is correct
65 Correct 343 ms 31920 KB Output is correct
66 Correct 115 ms 27960 KB Output is correct
67 Correct 190 ms 27884 KB Output is correct
68 Correct 138 ms 35960 KB Output is correct
69 Correct 261 ms 30840 KB Output is correct
70 Correct 123 ms 27996 KB Output is correct