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답안 #558849

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
558849 2022-05-08T18:56:07 Z RaresFelix Cats or Dogs (JOI18_catdog) C++17
100 / 100
 639 ms 25952 KB 
#include "catdog.h"
#include <bits/stdc++.h>
#define MN 100071

using namespace std;

int n, Sz[MN];
vector<int> L[MN];

const int kInf = numeric_limits<int>::max() / 4;
struct mat {
    int v[2][2];
    mat() {
        v[0][0] = v[1][1] = 0;
        v[0][1] = v[1][0] = kInf;
    }
    mat(int a, int b, int c, int d) {
        v[0][0] = a, v[0][1] = b, v[1][0] = c, v[1][1] = d;
    }
} I;
void afis(mat a);
namespace AINT {
    mat uni(const mat &a, const mat &b) {
        mat re(kInf, kInf, kInf, kInf);
        for(int i = 0; i < 2; ++i)
            for(int j = 0; j < 2; ++j) 
                for(int k = 0; k < 2; ++k)
                    for(int w = 0; w < 2; ++w)
                        re.v[i][w] = min(re.v[i][w], a.v[i][j] + b.v[k][w] + (j ^ k));
        return re;
    }
    mat V[4 * MN];
    int len;
    void init() {
        //for(int i = 0; i < 4 * MN; ++i) V[i] = r0;
    }
    void update(int p, mat v, int u = 1, int s = 1, int d = len) {
        if(d < p || p < s) return;
        if(s == d) {
            V[u] = v;
        //printf("Starea nodului %d(%d, %d) din AINT:\n", u, s, d);
        afis(V[u]);
        //printf("||||||||||||||\n");
            return;
        }
        update(p, v, u << 1, s, (s + d) >> 1);
        update(p, v, u << 1 | 1, ((s + d) >> 1) + 1, d);
        V[u] = uni(V[u << 1], V[u << 1 | 1]);
        //printf("Starea nodului %d(%d, %d) din AINT:\n", u, s, d);
        afis(V[u]);
        //printf("||||||||||||||\n");
    }
    mat query(int l, int r, int u = 1, int s = 1, int d = len) {
        if(r < s || d < l) return I;
        if(l <= s && d <= r) {
            return V[u];
        }
        int mij = (s + d) >> 1;
        if(r <= mij) return query(l, r, u << 1, s, (s + d) >> 1);
        if(mij < l) return query(l, r, u << 1 | 1, ((s + d) >> 1) + 1, d);
        return uni(query(l, r, u << 1, s, (s + d) >> 1), query(l, r, u << 1 | 1, ((s + d) >> 1) + 1, d));
    }
}
int Par[MN], In[MN], Out[MN], tmr, Nxt[MN];
int CFD[MN][2]; //cost fii secundari

int TipHut[MN];

void recalc_mat(int u) {
    mat re;
    if(TipHut[u] == 0) {
        re.v[0][0] = 0;
        re.v[1][1] = kInf;
    }
    if(TipHut[u] == 1) {
        re.v[0][0] = kInf;
        re.v[1][1] = 0;
    }
    if(TipHut[u] == 2) {
        re.v[0][0] = 0;
        re.v[1][1] = 0;
    }
    re.v[0][1] = kInf;
    re.v[1][0] = kInf;
    re.v[0][0] += CFD[u][0];
    re.v[1][1] += CFD[u][1];
    //printf("    !!! Pt nodul %d am recalc matricea:\n", u);
    afis(re);
    //printf("\n\n");
    AINT::update(In[u], re);
}
void afis(mat a) {
    //printf("%d %d\n%d %d\n", a.v[0][0], a.v[0][1], a.v[1][0], a.v[1][1]);
}

void propag(int u, int factor) {
    while(u) {
        int head = Nxt[u];
        int tail = Out[head];
        int par = Par[head];
        mat rez = AINT::query(In[head], In[tail]);
        //printf("u %d head %d tail %d par %d mat:\n", u, head, tail, par);
        afis(rez);
        //printf("---\n");
        CFD[par][0] += factor * min(min(rez.v[0][0], rez.v[0][1]), 1 + min(rez.v[1][0], rez.v[1][1]));
        CFD[par][1] += factor * min(1 + min(rez.v[0][0], rez.v[0][1]), min(rez.v[1][0], rez.v[1][1]));
        if(factor == 1) recalc_mat(par);
        u = par;
    }
}

void update(int u) {
    //printf("Update la %d cu tip %d\n", u, TipHut[u]);
    propag(u, -1);
    recalc_mat(u);
    propag(u, 1);
}

void dfs_sz(int u, int p) {
    Sz[u] = 1;
    for(auto &it : L[u]) if(it != p) {
        dfs_sz(it, u);
        Sz[u] += Sz[it];
        if(L[u][0] == p || Sz[it] > Sz[L[u][0]]) swap(it, L[u][0]);
    }
}

void dfs_hld(int u, int p) {
    Par[u] = p;
    In[u] = ++tmr;
    if(p) {
        Nxt[u] = (u == L[p][0] ? Nxt[p] : u);
    } else Nxt[u] = u;
    Out[Nxt[u]] = u;
    for(auto it : L[u])
        if(it != p) dfs_hld(it, u);
}

void initialize(int N, std::vector<int> A, std::vector<int> B) {
    n = N;
    for(int i = 0; i <= n; ++i)
        TipHut[i] = 2;
    for(int i = 0; i < int(A.size()); ++i)
        L[A[i]].push_back(B[i]), L[B[i]].push_back(A[i]);
    dfs_sz(1, 0);
    AINT::init();
    dfs_hld(1, 0);
    AINT::len = tmr;
    //printf("Nod %d S %d N %d P %d I %d\n", i, Sz[i], Nxt[i], Par[i], In[i]);
}


int rez() {
    return min(CFD[0][0], CFD[0][1]);
}
int cat(int v) {
    TipHut[v] = 0;
    update(v);
    return rez();
}

int dog(int v) {
    TipHut[v] = 1;
    update(v);
    return rez();
}

int neighbor(int v) {
    TipHut[v] = 2;
    update(v);
    return rez();
}

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 8916 KB Output is correct
2 Correct 5 ms 8924 KB Output is correct
3 Correct 5 ms 8924 KB Output is correct
4 Correct 5 ms 8860 KB Output is correct
5 Correct 5 ms 8932 KB Output is correct
6 Correct 4 ms 8924 KB Output is correct
7 Correct 5 ms 8912 KB Output is correct
8 Correct 5 ms 8928 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 7 ms 8916 KB Output is correct
11 Correct 6 ms 8924 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 6 ms 8900 KB Output is correct
14 Correct 5 ms 8916 KB Output is correct
15 Correct 5 ms 8844 KB Output is correct
16 Correct 6 ms 8916 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 8916 KB Output is correct
2 Correct 5 ms 8924 KB Output is correct
3 Correct 5 ms 8924 KB Output is correct
4 Correct 5 ms 8860 KB Output is correct
5 Correct 5 ms 8932 KB Output is correct
6 Correct 4 ms 8924 KB Output is correct
7 Correct 5 ms 8912 KB Output is correct
8 Correct 5 ms 8928 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 7 ms 8916 KB Output is correct
11 Correct 6 ms 8924 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 6 ms 8900 KB Output is correct
14 Correct 5 ms 8916 KB Output is correct
15 Correct 5 ms 8844 KB Output is correct
16 Correct 6 ms 8916 KB Output is correct
17 Correct 6 ms 8956 KB Output is correct
18 Correct 6 ms 8916 KB Output is correct
19 Correct 6 ms 8916 KB Output is correct
20 Correct 5 ms 8924 KB Output is correct
21 Correct 5 ms 8916 KB Output is correct
22 Correct 5 ms 8932 KB Output is correct
23 Correct 6 ms 8932 KB Output is correct
24 Correct 6 ms 8916 KB Output is correct
25 Correct 8 ms 8932 KB Output is correct
26 Correct 6 ms 8916 KB Output is correct
27 Correct 6 ms 8980 KB Output is correct
28 Correct 6 ms 9044 KB Output is correct
29 Correct 7 ms 9044 KB Output is correct
30 Correct 6 ms 8916 KB Output is correct
31 Correct 5 ms 8916 KB Output is correct
32 Correct 5 ms 8916 KB Output is correct

Subtask #3
62.0 / 62.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 8916 KB Output is correct
2 Correct 5 ms 8924 KB Output is correct
3 Correct 5 ms 8924 KB Output is correct
4 Correct 5 ms 8860 KB Output is correct
5 Correct 5 ms 8932 KB Output is correct
6 Correct 4 ms 8924 KB Output is correct
7 Correct 5 ms 8912 KB Output is correct
8 Correct 5 ms 8928 KB Output is correct
9 Correct 5 ms 8916 KB Output is correct
10 Correct 7 ms 8916 KB Output is correct
11 Correct 6 ms 8924 KB Output is correct
12 Correct 5 ms 8916 KB Output is correct
13 Correct 6 ms 8900 KB Output is correct
14 Correct 5 ms 8916 KB Output is correct
15 Correct 5 ms 8844 KB Output is correct
16 Correct 6 ms 8916 KB Output is correct
17 Correct 6 ms 8956 KB Output is correct
18 Correct 6 ms 8916 KB Output is correct
19 Correct 6 ms 8916 KB Output is correct
20 Correct 5 ms 8924 KB Output is correct
21 Correct 5 ms 8916 KB Output is correct
22 Correct 5 ms 8932 KB Output is correct
23 Correct 6 ms 8932 KB Output is correct
24 Correct 6 ms 8916 KB Output is correct
25 Correct 8 ms 8932 KB Output is correct
26 Correct 6 ms 8916 KB Output is correct
27 Correct 6 ms 8980 KB Output is correct
28 Correct 6 ms 9044 KB Output is correct
29 Correct 7 ms 9044 KB Output is correct
30 Correct 6 ms 8916 KB Output is correct
31 Correct 5 ms 8916 KB Output is correct
32 Correct 5 ms 8916 KB Output is correct
33 Correct 299 ms 14784 KB Output is correct
34 Correct 127 ms 14636 KB Output is correct
35 Correct 293 ms 13644 KB Output is correct
36 Correct 490 ms 18696 KB Output is correct
37 Correct 18 ms 11708 KB Output is correct
38 Correct 567 ms 19628 KB Output is correct
39 Correct 639 ms 19640 KB Output is correct
40 Correct 552 ms 19644 KB Output is correct
41 Correct 519 ms 19644 KB Output is correct
42 Correct 477 ms 19648 KB Output is correct
43 Correct 560 ms 19640 KB Output is correct
44 Correct 502 ms 19772 KB Output is correct
45 Correct 508 ms 19668 KB Output is correct
46 Correct 472 ms 19636 KB Output is correct
47 Correct 517 ms 19632 KB Output is correct
48 Correct 132 ms 16108 KB Output is correct
49 Correct 175 ms 17812 KB Output is correct
50 Correct 56 ms 11072 KB Output is correct
51 Correct 78 ms 12388 KB Output is correct
52 Correct 27 ms 10708 KB Output is correct
53 Correct 211 ms 17948 KB Output is correct
54 Correct 163 ms 13264 KB Output is correct
55 Correct 456 ms 16744 KB Output is correct
56 Correct 256 ms 14068 KB Output is correct
57 Correct 379 ms 17872 KB Output is correct
58 Correct 26 ms 12624 KB Output is correct
59 Correct 57 ms 12220 KB Output is correct
60 Correct 122 ms 16956 KB Output is correct
61 Correct 145 ms 17480 KB Output is correct
62 Correct 79 ms 15464 KB Output is correct
63 Correct 51 ms 15872 KB Output is correct
64 Correct 52 ms 17576 KB Output is correct
65 Correct 59 ms 22344 KB Output is correct
66 Correct 76 ms 12544 KB Output is correct
67 Correct 71 ms 18516 KB Output is correct
68 Correct 147 ms 22636 KB Output is correct
69 Correct 39 ms 10444 KB Output is correct
70 Correct 11 ms 9172 KB Output is correct
71 Correct 64 ms 15572 KB Output is correct
72 Correct 109 ms 20864 KB Output is correct
73 Correct 225 ms 25952 KB Output is correct
74 Correct 302 ms 22380 KB Output is correct
75 Correct 180 ms 25832 KB Output is correct
76 Correct 157 ms 24624 KB Output is correct
77 Correct 289 ms 22764 KB Output is correct