oj.uz

Submission #287861

# Submission time Handle Problem Language Result Execution time Memory
287861 2020-09-01T04:58:37 Z 최은수(#5768) Election Campaign (JOI15_election_campaign) C++17
100 / 100
 536 ms 57336 KB 
#include<iostream>
#include<vector>
#include<algorithm>
#define ep emplace
#define eb emplace_back
#define fi first
#define se second
#define all(x) (x).begin(),(x).end()
using namespace std;
typedef long long ll;
typedef pair<int,int>pi;
typedef pair<ll,ll>pl;
const int inf=1e9+7;
const ll INF=1e18;
const int mx=100010;
vector<int>adj[mx];
int spa[mx][17];
int dep[mx];
inline int kpa(int x,int k)
{
    for(;k>0;k^=k&-k)
        x=spa[x][__builtin_ctz(k)];
    return x;
}
inline int lca(int x,int y)
{
    if(dep[x]>dep[y])
        x=kpa(x,dep[x]-dep[y]);
    else
        y=kpa(y,dep[y]-dep[x]);
    if(x==y)
        return x;
    for(int i=17;i-->0;)
        if(spa[x][i]!=spa[y][i])
            x=spa[x][i],y=spa[y][i];
    return spa[x][0];
}
void sdfs(int x,int p)
{
    dep[x]=dep[p]+1;
    spa[x][0]=p;
    for(int i=0;i<16;i++)
        spa[x][i+1]=spa[spa[x][i]][i];
    for(int&t:adj[x])
        if(t!=p)
            sdfs(t,x);
    return;
}
ll spd[mx][17];
inline ll pq(int x,int y)
{
    ll ret=0;
    for(int k=dep[x]-dep[y];k>0;k^=k&-k)
        ret+=spd[x][__builtin_ctz(k)],x=spa[x][__builtin_ctz(k)];
    return ret;
}
ll dp[mx],dp2[mx];
vector<pi>upd[mx];
vector<pair<pi,int> >quer[mx];
void dfs(int x,int p)
{
    dp[x]=0;
    for(int&t:adj[x])
        if(t!=p)
            dfs(t,x),dp[x]+=dp2[t];
    for(pi&t:upd[x])
        spd[t.fi][t.se+1]=spd[t.fi][t.se]+spd[spa[t.fi][t.se]][t.se];
    dp2[x]=dp[x];
    for(auto&t:quer[x])
        dp2[x]=max(dp2[x],dp[x]-pq(t.fi.fi,x)-pq(t.fi.se,x)+t.se);
    spd[x][0]=dp2[x]-dp[x];
    return;
}
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int n,m;
    cin>>n;
    for(int i=1;i<n;i++)
    {
        int u,v;
        cin>>u>>v;
        adj[u].eb(v);
        adj[v].eb(u);
    }
    sdfs(1,0);
    cin>>m;
    for(int i=0;i<m;i++)
    {
        int u,v,w;
        cin>>u>>v>>w;
        quer[lca(u,v)].eb(pi(u,v),w);
    }
    for(int i=0;i<16;i++)
        for(int x=0;x++<n;)
            if(spa[x][i+1]!=0)
                upd[spa[x][i+1]].eb(x,i);
    dfs(1,0);
    cout<<dp2[1]<<endl;
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 6 ms 7424 KB Output is correct
3 Correct 5 ms 7424 KB Output is correct
4 Correct 6 ms 7680 KB Output is correct
5 Correct 153 ms 36988 KB Output is correct
6 Correct 139 ms 52740 KB Output is correct
7 Correct 351 ms 55820 KB Output is correct
8 Correct 112 ms 34704 KB Output is correct
9 Correct 369 ms 54392 KB Output is correct
10 Correct 99 ms 34472 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 6 ms 7936 KB Output is correct
4 Correct 245 ms 54836 KB Output is correct
5 Correct 227 ms 54776 KB Output is correct
6 Correct 206 ms 54776 KB Output is correct
7 Correct 224 ms 54908 KB Output is correct
8 Correct 220 ms 54876 KB Output is correct
9 Correct 202 ms 54776 KB Output is correct
10 Correct 231 ms 54848 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7424 KB Output is correct
2 Correct 5 ms 7424 KB Output is correct
3 Correct 6 ms 7936 KB Output is correct
4 Correct 245 ms 54836 KB Output is correct
5 Correct 227 ms 54776 KB Output is correct
6 Correct 206 ms 54776 KB Output is correct
7 Correct 224 ms 54908 KB Output is correct
8 Correct 220 ms 54876 KB Output is correct
9 Correct 202 ms 54776 KB Output is correct
10 Correct 231 ms 54848 KB Output is correct
11 Correct 15 ms 8320 KB Output is correct
12 Correct 226 ms 54904 KB Output is correct
13 Correct 221 ms 54904 KB Output is correct
14 Correct 206 ms 54776 KB Output is correct
15 Correct 223 ms 54776 KB Output is correct
16 Correct 205 ms 54776 KB Output is correct
17 Correct 229 ms 54776 KB Output is correct
18 Correct 215 ms 54760 KB Output is correct
19 Correct 210 ms 54780 KB Output is correct
20 Correct 248 ms 54880 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 216 ms 38832 KB Output is correct
2 Correct 211 ms 54776 KB Output is correct
3 Correct 510 ms 57336 KB Output is correct
4 Correct 131 ms 36656 KB Output is correct
5 Correct 450 ms 56956 KB Output is correct
6 Correct 135 ms 36752 KB Output is correct
7 Correct 495 ms 56756 KB Output is correct
8 Correct 221 ms 39392 KB Output is correct
9 Correct 202 ms 54776 KB Output is correct
10 Correct 494 ms 55852 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 6 ms 7424 KB Output is correct
3 Correct 5 ms 7424 KB Output is correct
4 Correct 6 ms 7680 KB Output is correct
5 Correct 153 ms 36988 KB Output is correct
6 Correct 139 ms 52740 KB Output is correct
7 Correct 351 ms 55820 KB Output is correct
8 Correct 112 ms 34704 KB Output is correct
9 Correct 369 ms 54392 KB Output is correct
10 Correct 99 ms 34472 KB Output is correct
11 Correct 6 ms 7680 KB Output is correct
12 Correct 7 ms 7936 KB Output is correct
13 Correct 7 ms 7808 KB Output is correct
14 Correct 6 ms 7680 KB Output is correct
15 Correct 6 ms 7680 KB Output is correct
16 Correct 7 ms 7808 KB Output is correct
17 Correct 6 ms 7680 KB Output is correct
18 Correct 7 ms 7808 KB Output is correct
19 Correct 6 ms 7680 KB Output is correct
20 Correct 6 ms 7936 KB Output is correct

Subtask #6
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7424 KB Output is correct
2 Correct 6 ms 7424 KB Output is correct
3 Correct 5 ms 7424 KB Output is correct
4 Correct 6 ms 7680 KB Output is correct
5 Correct 153 ms 36988 KB Output is correct
6 Correct 139 ms 52740 KB Output is correct
7 Correct 351 ms 55820 KB Output is correct
8 Correct 112 ms 34704 KB Output is correct
9 Correct 369 ms 54392 KB Output is correct
10 Correct 99 ms 34472 KB Output is correct
11 Correct 6 ms 7424 KB Output is correct
12 Correct 5 ms 7424 KB Output is correct
13 Correct 6 ms 7936 KB Output is correct
14 Correct 245 ms 54836 KB Output is correct
15 Correct 227 ms 54776 KB Output is correct
16 Correct 206 ms 54776 KB Output is correct
17 Correct 224 ms 54908 KB Output is correct
18 Correct 220 ms 54876 KB Output is correct
19 Correct 202 ms 54776 KB Output is correct
20 Correct 231 ms 54848 KB Output is correct
21 Correct 15 ms 8320 KB Output is correct
22 Correct 226 ms 54904 KB Output is correct
23 Correct 221 ms 54904 KB Output is correct
24 Correct 206 ms 54776 KB Output is correct
25 Correct 223 ms 54776 KB Output is correct
26 Correct 205 ms 54776 KB Output is correct
27 Correct 229 ms 54776 KB Output is correct
28 Correct 215 ms 54760 KB Output is correct
29 Correct 210 ms 54780 KB Output is correct
30 Correct 248 ms 54880 KB Output is correct
31 Correct 216 ms 38832 KB Output is correct
32 Correct 211 ms 54776 KB Output is correct
33 Correct 510 ms 57336 KB Output is correct
34 Correct 131 ms 36656 KB Output is correct
35 Correct 450 ms 56956 KB Output is correct
36 Correct 135 ms 36752 KB Output is correct
37 Correct 495 ms 56756 KB Output is correct
38 Correct 221 ms 39392 KB Output is correct
39 Correct 202 ms 54776 KB Output is correct
40 Correct 494 ms 55852 KB Output is correct
41 Correct 6 ms 7680 KB Output is correct
42 Correct 7 ms 7936 KB Output is correct
43 Correct 7 ms 7808 KB Output is correct
44 Correct 6 ms 7680 KB Output is correct
45 Correct 6 ms 7680 KB Output is correct
46 Correct 7 ms 7808 KB Output is correct
47 Correct 6 ms 7680 KB Output is correct
48 Correct 7 ms 7808 KB Output is correct
49 Correct 6 ms 7680 KB Output is correct
50 Correct 6 ms 7936 KB Output is correct
51 Correct 237 ms 39160 KB Output is correct
52 Correct 225 ms 54776 KB Output is correct
53 Correct 536 ms 55884 KB Output is correct
54 Correct 137 ms 36016 KB Output is correct
55 Correct 210 ms 38832 KB Output is correct
56 Correct 219 ms 54776 KB Output is correct
57 Correct 455 ms 56384 KB Output is correct
58 Correct 132 ms 36908 KB Output is correct
59 Correct 222 ms 39000 KB Output is correct
60 Correct 235 ms 54820 KB Output is correct
61 Correct 453 ms 56568 KB Output is correct
62 Correct 133 ms 36560 KB Output is correct
63 Correct 215 ms 38888 KB Output is correct
64 Correct 234 ms 54904 KB Output is correct
65 Correct 504 ms 56324 KB Output is correct
66 Correct 143 ms 36480 KB Output is correct
67 Correct 217 ms 38888 KB Output is correct
68 Correct 234 ms 54772 KB Output is correct
69 Correct 453 ms 55416 KB Output is correct
70 Correct 141 ms 36452 KB Output is correct