oj.uz

Submission #992543

# Submission time Handle Problem Language Result Execution time Memory
992543 2024-06-04T16:16:15 Z Abito Paths (RMI21_paths) C++17
36 / 100
 600 ms 852 KB 
#include <bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define ppb pop_back
#define ep insert
#define endl '\n'
#define elif else if
#define pow pwr
#define sqrt sqrtt
#define int long long
#define y1 YONE
typedef unsigned long long ull;
using namespace std;
const int N=2005;
int n,k,dis[N],tin[N],sz[N],par[N],t,lazy[4*N+5],v[N],tree[N];
vector<pair<int,int>> adj[N];
pair<int,int> seg[4*N+5];
bool vis[N];
void dfs(int x,int p){
    par[x]=p;
    sz[x]=1;
    t++;
    tin[x]=t;
    tree[t]=x;
    for (auto u:adj[x]){
        if (p==u.F) continue;
        v[u.F]=u.S;
        dis[u.F]=dis[x]+u.S;
        dfs(u.F,x);
        sz[x]+=sz[u.F];
    }return;
}
void build(int x,int l,int r){
    lazy[x]=0;
    if (l==r){
        seg[x]={dis[tree[l]],tree[l]};
        return;
    }int mid=(l+r)/2;
    build(x*2,l,mid);
    build(x*2+1,mid+1,r);
    seg[x]=max(seg[x*2],seg[x*2+1]);
    return;
}
void push(int x){
    seg[x*2].F+=lazy[x];
    seg[x*2+1].F+=lazy[x];
    lazy[x*2]+=lazy[x];
    lazy[x*2+1]+=lazy[x];
    lazy[x]=0;
    return;
}
void edit(int x,int l,int r,int lx,int rx,int val){
    if (l>rx || r<lx) return;
    if (l>=lx && r<=rx){
        seg[x].F+=val;
        lazy[x]+=val;
        return;
    }int mid=(l+r)/2;
    push(x);
    edit(x*2,l,mid,lx,rx,val);
    edit(x*2+1,mid+1,r,lx,rx,val);
    seg[x]=max(seg[x*2],seg[x*2+1]);
    return;
}
int32_t main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
    cin>>n>>k;
    for (int i=1;i<n;i++){
        int x,y,w;
        cin>>x>>y>>w;
        adj[x].pb({y,w});
        adj[y].pb({x,w});
    }
    for (int i=1;i<=n;i++){
        t=0;dis[i]=0;v[i]=0;par[i]=0;
        memset(vis,0,sizeof(vis));
        dfs(i,0);
        build(1,1,n);
        int ans=0;
        for (int kk=1;kk<=k;kk++){
            int x=seg[1].S;
            //cout<<x<<' ';
            while (!vis[x] && x){
                ans+=v[x];
                edit(1,1,n,tin[x],tin[x]+sz[x]-1,-v[x]);
                v[x]=0;
                vis[x]=1;
                x=par[x];
            }
        }cout<<ans<<endl;

    }
    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct

Subtask #2
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 3 ms 348 KB Output is correct
4 Correct 4 ms 568 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 5 ms 348 KB Output is correct
7 Correct 4 ms 348 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 3 ms 348 KB Output is correct
4 Correct 4 ms 568 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 5 ms 348 KB Output is correct
7 Correct 4 ms 348 KB Output is correct
8 Correct 87 ms 680 KB Output is correct
9 Correct 134 ms 604 KB Output is correct
10 Correct 136 ms 680 KB Output is correct
11 Correct 42 ms 604 KB Output is correct
12 Correct 88 ms 704 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 3 ms 348 KB Output is correct
4 Correct 4 ms 568 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 5 ms 348 KB Output is correct
7 Correct 4 ms 348 KB Output is correct
8 Correct 87 ms 680 KB Output is correct
9 Correct 134 ms 604 KB Output is correct
10 Correct 136 ms 680 KB Output is correct
11 Correct 42 ms 604 KB Output is correct
12 Correct 88 ms 704 KB Output is correct
13 Execution timed out 601 ms 852 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Runtime error 0 ms 604 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #6
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 3 ms 348 KB Output is correct
4 Correct 4 ms 568 KB Output is correct
5 Correct 2 ms 348 KB Output is correct
6 Correct 5 ms 348 KB Output is correct
7 Correct 4 ms 348 KB Output is correct
8 Correct 87 ms 680 KB Output is correct
9 Correct 134 ms 604 KB Output is correct
10 Correct 136 ms 680 KB Output is correct
11 Correct 42 ms 604 KB Output is correct
12 Correct 88 ms 704 KB Output is correct
13 Execution timed out 601 ms 852 KB Time limit exceeded
14 Halted 0 ms 0 KB -