oj.uz

답안 #398142

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
398142 2021-05-03T19:50:07 Z bonopo 공장들 (JOI14_factories) C++14
100 / 100
 5663 ms 231436 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
#define pb push_back
#define el "\n"
#define f first
#define s second

#pragma GCC optimize("O3")
#pragma GCC target("sse4")

typedef long long ll;
const ll MM=5e5+5, MOD=1e9+7, LOG=20, INF=1e18;
int dep[MM], sz[MM], nxt[MM], in[MM], ot[MM], head[2*MM], ct=1, chn; ll dst[MM], spc[MM];
pair<int,int> st[LOG][4*MM];
bool blk[MM];

struct E {int nxt; pair<int,int> v; } e[2*MM];
void add(int u, int v, int w){
    e[chn].v={v,w}; e[chn].nxt=head[u]; head[u]=chn++; }
int lg2(int x) {
    return 32-__builtin_clz(x)-1; }
void df1(int u, int pa) {
    dep[u]=dep[pa]+1; st[0][ct]={dep[u], u}; in[u]=ct++;
    for(int i=head[u]; i!=-1; i=e[i].nxt) {
        int v=e[i].v.f, w=e[i].v.s; if(v==pa) continue;
        dst[v]=dst[u]+w; df1(v, u); sz[u]+=sz[v];
        st[0][ct++]={dep[u], u}; }
    ot[u]=ct; }
inline int qry(int l, int r) {
    int lg=lg2(r-l+1);
    int x=min(st[lg][l], st[lg][r-(1<<lg)+1]).s; return x; }
inline int lca(int u, int v) {
    if(in[u]>in[v]) swap(u, v);
    return qry(in[u], in[v]); }
void gsz(int u, int pa) {
    sz[u]=1;
    for(int i=head[u]; i!=-1; i=e[i].nxt) {
        int v=e[i].v.f; if(blk[v]||v==pa) continue;
        gsz(v, u); sz[u]+=sz[v]; } }
int ctr(int u, int pa, int nd) {
    for(int i=head[u]; i!=-1; i=e[i].nxt) {
        int v=e[i].v.f; if(blk[v]||v==pa) continue;
        if(sz[v]*2>nd) return ctr(v, u, nd); }
    return u; }
inline ll dist(int u, int v) {
    return dst[u]+dst[v]-2LL*dst[lca(u, v)]; }
void slv(int u, int pa) {
    gsz(u, -1); u=ctr(u, -1, sz[u]); blk[u]=1; nxt[u]=pa;
    for(int i=head[u]; i!=-1; i=e[i].nxt) {
        int v=e[i].v.f; if(!blk[v]) slv(v, u); } }
void Init(int N, int A[], int B[], int D[]) {
    memset(head, -1, sizeof(head));
    for(int i=0; i<N; ++i) spc[i]=INF;
    for(int i=0; i<N-1; ++i) {
        add(A[i], B[i], D[i]); add(B[i], A[i], D[i]); }
    df1(0, 0); slv(0, -1);
    for(int i=1; i<LOG; ++i)
        for(int j=1; j+(1<<i)-1<=ct; ++j)
            st[i][j]=min(st[i-1][j], st[i-1][j+(1<<(i-1))]); }
long long Query(int S, int X[], int T, int Y[]) {
    vector<int> vs;
    for(int i=0, c; i<S; ++i) {
        c=X[i];
        while(c!=-1)
            spc[c]=min(spc[c], dist(X[i], c)), vs.pb(c), c=nxt[c]; }
    long long ans=INF;
    for(int i=0, c; i<T; ++i) {
        c=Y[i];
        while(c!=-1)
            ans=min(ans, dist(Y[i], c)+spc[c]), c=nxt[c]; }
    for(int &x:vs) assert(x!=-1), spc[x]=INF;
    return ans;
}

Subtask #1
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 16440 KB Output is correct
2 Correct 513 ms 25496 KB Output is correct
3 Correct 682 ms 25332 KB Output is correct
4 Correct 683 ms 25804 KB Output is correct
5 Correct 782 ms 25864 KB Output is correct
6 Correct 342 ms 25348 KB Output is correct
7 Correct 675 ms 25500 KB Output is correct
8 Correct 687 ms 25472 KB Output is correct
9 Correct 713 ms 25984 KB Output is correct
10 Correct 362 ms 25292 KB Output is correct
11 Correct 687 ms 25236 KB Output is correct

Subtask #2
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 16204 KB Output is correct
2 Correct 2339 ms 195368 KB Output is correct
3 Correct 2937 ms 198316 KB Output is correct
4 Correct 847 ms 195276 KB Output is correct
5 Correct 3913 ms 229204 KB Output is correct
6 Correct 3096 ms 199508 KB Output is correct
7 Correct 2036 ms 57096 KB Output is correct
8 Correct 533 ms 57300 KB Output is correct
9 Correct 2315 ms 61780 KB Output is correct
10 Correct 2081 ms 58304 KB Output is correct

Subtask #3
67.0 / 67.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 16440 KB Output is correct
2 Correct 513 ms 25496 KB Output is correct
3 Correct 682 ms 25332 KB Output is correct
4 Correct 683 ms 25804 KB Output is correct
5 Correct 782 ms 25864 KB Output is correct
6 Correct 342 ms 25348 KB Output is correct
7 Correct 675 ms 25500 KB Output is correct
8 Correct 687 ms 25472 KB Output is correct
9 Correct 713 ms 25984 KB Output is correct
10 Correct 362 ms 25292 KB Output is correct
11 Correct 687 ms 25236 KB Output is correct
12 Correct 12 ms 16204 KB Output is correct
13 Correct 2339 ms 195368 KB Output is correct
14 Correct 2937 ms 198316 KB Output is correct
15 Correct 847 ms 195276 KB Output is correct
16 Correct 3913 ms 229204 KB Output is correct
17 Correct 3096 ms 199508 KB Output is correct
18 Correct 2036 ms 57096 KB Output is correct
19 Correct 533 ms 57300 KB Output is correct
20 Correct 2315 ms 61780 KB Output is correct
21 Correct 2081 ms 58304 KB Output is correct
22 Correct 3203 ms 200820 KB Output is correct
23 Correct 3412 ms 205344 KB Output is correct
24 Correct 4445 ms 207304 KB Output is correct
25 Correct 4514 ms 208556 KB Output is correct
26 Correct 4474 ms 200292 KB Output is correct
27 Correct 5663 ms 231436 KB Output is correct
28 Correct 1125 ms 201780 KB Output is correct
29 Correct 4395 ms 202520 KB Output is correct
30 Correct 4468 ms 201860 KB Output is correct
31 Correct 4428 ms 202508 KB Output is correct
32 Correct 2350 ms 81532 KB Output is correct
33 Correct 510 ms 72116 KB Output is correct
34 Correct 1502 ms 68588 KB Output is correct
35 Correct 1485 ms 68616 KB Output is correct
36 Correct 1901 ms 69416 KB Output is correct
37 Correct 1924 ms 69388 KB Output is correct