oj.uz

Submission #884055

# Submission time Handle Problem Language Result Execution time Memory
884055 2023-12-06T15:10:35 Z vjudge1 Cats or Dogs (JOI18_catdog) C++17
38 / 100
 3000 ms 14688 KB 
#include "catdog.h"
#include <bits/stdc++.h>

using namespace std;


template<typename Node>
struct AINT {
    vector<Node> aint;
    int n;
    Node ID;
    void init(int _n, Node id) {
        ID = id;
        n = _n;
        aint.resize(n * 2 + 5, Node());

    }

    void upd(int p, Node x, int node, int cl, int cr) {
        if(p < cl || cr < p) return;
        if(cl == cr) { aint[node] = x; return; }
        int mid = cl + cr >> 1;
        push(node, (mid - cl + 1) * 2);
        upd(p, x, node + 1, cl, mid);
        upd(p, x, node + (mid - cl + 1) * 2, mid + 1, cr);
        aint[node] = aint[node + 1] + aint[node + (mid - cl + 1) * 2];
//        cerr << cl << ' ' << cr << " :: \t" << aint[node].mat[0][0] << ' ' << aint[node].mat[1][1] << '\n'
    }
    Node query(int l, int r, int node, int cl, int cr) {
        if(r < cl || cr < l) return ID;
        if(l <= cl && cr <= r) return aint[node];
        int mid = cl + cr >> 1;
        push(node, (mid - cl + 1) * 2);
        return query(l, r, node + 1, cl, mid) + query(l, r, node + (mid - cl + 1) * 2, mid + 1, cr);
    }

    void upd(int p, Node x) { upd(p, x, 1, 1, n); }
    Node query(int l, int r) { return query(l, r, 1, 1, n); }


    void push(int node, int L) {;}
};

const int nmax = 1e5 + 5;
const int inf = 1e6 + 5;

namespace Tree {
    vector<int> g[nmax];

    int area[nmax];
    int pch[nmax], lastpoz[nmax], p[nmax];
    int pin[nmax], pout[nmax], inp = 1;

    int nodepoz(int node) { return pin[node];}

    namespace Init {
        void preinit(int node, int f) {
            p[node] = f;
            area[node] = 1;
            for(auto x : g[node]) {
                if(x == f) continue;
                preinit(x, node);
                area[node] += area[x];
            }
            return;
        }

        void init(int node, int f) {
            lastpoz[pch[node]] = inp;
            pin[node] = inp++;
            int mx = -1;
            for(auto x : g[node]) {
                if(x == f) continue;
                mx = mx == -1 || area[mx] < area[x]? x : mx;
            }
            if(mx == -1) {pout[node] = inp - 1; return; }
            pch[mx] = pch[node];
            init(mx, node);

            for(auto x : g[node]) {
               if(x == f || x == mx) continue;
               pch[x] = x;
               init(x, node);
            }
        }
    }

    struct Mat {
        int mat[2][2];
        Mat() { for(int i = 0; i < 2; i++) for(int j = 0; j < 2; j++) mat[i][j] = inf; }
        Mat operator +(const Mat& x) const {
            Mat rez;

            for(int L = 0; L < 2; L++) {
                for(int M1 = 0; M1 < 2; M1++) {
                    for(int M2 = 0; M2 < 2; M2++) {
                        for(int R = 0; R < 2; R++) {
                            rez.mat[L][R] = min(rez.mat[L][R], mat[L][M1] + x.mat[M2][R] + (M1 != M2));
                        }
                    }
                }
            }

            return rez;
        }
    };

    AINT<Mat> aint;

    struct SimpleDir {
        int red, blue;
        SimpleDir(int a = 0, int b = 0): red(a), blue(b) {;}
        SimpleDir operator +=(SimpleDir& x) { return *this = SimpleDir(red + min(x.red, x.blue + 1), blue + min(x.blue, x.red + 1)); }
        SimpleDir operator -=(SimpleDir& x) { return *this = SimpleDir(red - min(x.red, x.blue + 1), blue - min(x.blue, x.red + 1)); }
    };

    SimpleDir overson[nmax], mine[nmax];

    int color[nmax];

    Mat red(int node) {
        Mat curr;
        curr.mat[0][0] = overson[node].red;
        return curr;
    }

    Mat blue(int node) {
        Mat curr;
        curr.mat[1][1] = overson[node].blue;
        return curr;
    }

    Mat gol(int node) {
        Mat curr;
        curr.mat[0][0] = overson[node].red;
        curr.mat[1][1] = overson[node].blue;
        return curr;
    }

    void init(int node, int f) {
        aint.upd(nodepoz(node), gol(node));
        for(auto x : g[node])
            if(x != f)
                init(x, node);
        return;
    }

    void init(int n) {
        Mat ok;
        ok.mat[0][0] = 0;
        ok.mat[1][1] = 0;
        aint.init(n, ok);
        init(0, 0);
    }

    int upd(int node) {
        int father = pch[node];
        aint.upd(nodepoz(node), color[node] == 0? gol(node) : color[node] == 1? red(node) : blue(node));

        if(father == 0) { auto R = aint.query(pin[father], lastpoz[father]); return min({R.mat[0][0],R.mat[0][1],R.mat[1][0],R.mat[1][1]});}

        overson[p[father]] -= mine[father];
        auto R = aint.query(pin[father], lastpoz[father]);
        mine[father] = SimpleDir(min(R.mat[0][0], R.mat[0][1]), min(R.mat[1][0], R.mat[1][1]));
        if(color[father] == 1) mine[father].blue = inf;
        if(color[father] == 2) mine[father].red = inf;

        overson[p[father]] += mine[father];

        return upd(p[node]);
    }
}

void initialize(int n, std::vector<int> A, std::vector<int> B) {
    for(int i = 0; i < n - 1; i++) {
        Tree::g[--A[i]].emplace_back(--B[i]);
        Tree::g[B[i]].emplace_back(A[i]);
    }

    Tree::Init::preinit(0, 0);
    Tree::pch[0];
    Tree::Init::init(0, 0);

    Tree::init(n);

    return;
}

int cat(int v) {
    Tree::color[--v] = 1;
  return Tree::upd(v);
}

int dog(int v) {
    Tree::color[--v] = 2;
  return Tree::upd(v);
}

int neighbor(int v) {
    Tree::color[--v] = 0;
  return Tree::upd(v);
}

Compilation message

catdog.cpp: In function 'void initialize(int, std::vector<int>, std::vector<int>)':
catdog.cpp:181:16: warning: statement has no effect [-Wunused-value]
  181 |     Tree::pch[0];
      |     ~~~~~~~~~~~^
catdog.cpp: In instantiation of 'void AINT<Node>::upd(int, Node, int, int, int) [with Node = Tree::Mat]':
catdog.cpp:37:34:   required from 'void AINT<Node>::upd(int, Node) [with Node = Tree::Mat]'
catdog.cpp:141:42:   required from here
catdog.cpp:22:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   22 |         int mid = cl + cr >> 1;
      |                   ~~~^~~~
catdog.cpp: In instantiation of 'Node AINT<Node>::query(int, int, int, int, int) [with Node = Tree::Mat]':
catdog.cpp:38:44:   required from 'Node AINT<Node>::query(int, int) [with Node = Tree::Mat]'
catdog.cpp:160:75:   required from here
catdog.cpp:32:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   32 |         int mid = cl + cr >> 1;
      |                   ~~~^~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6744 KB Output is correct
2 Correct 2 ms 6748 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 1 ms 6880 KB Output is correct
5 Correct 1 ms 6744 KB Output is correct
6 Correct 1 ms 6748 KB Output is correct
7 Correct 1 ms 6748 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 1 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 1 ms 6748 KB Output is correct
12 Correct 2 ms 6748 KB Output is correct
13 Correct 1 ms 6744 KB Output is correct
14 Correct 2 ms 6912 KB Output is correct
15 Correct 1 ms 6748 KB Output is correct
16 Correct 1 ms 6748 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6744 KB Output is correct
2 Correct 2 ms 6748 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 1 ms 6880 KB Output is correct
5 Correct 1 ms 6744 KB Output is correct
6 Correct 1 ms 6748 KB Output is correct
7 Correct 1 ms 6748 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 1 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 1 ms 6748 KB Output is correct
12 Correct 2 ms 6748 KB Output is correct
13 Correct 1 ms 6744 KB Output is correct
14 Correct 2 ms 6912 KB Output is correct
15 Correct 1 ms 6748 KB Output is correct
16 Correct 1 ms 6748 KB Output is correct
17 Correct 5 ms 6748 KB Output is correct
18 Correct 5 ms 6996 KB Output is correct
19 Correct 4 ms 6904 KB Output is correct
20 Correct 2 ms 6748 KB Output is correct
21 Correct 2 ms 6748 KB Output is correct
22 Correct 2 ms 6944 KB Output is correct
23 Correct 6 ms 6748 KB Output is correct
24 Correct 5 ms 6988 KB Output is correct
25 Correct 4 ms 6748 KB Output is correct
26 Correct 4 ms 6748 KB Output is correct
27 Correct 5 ms 6748 KB Output is correct
28 Correct 5 ms 7004 KB Output is correct
29 Correct 4 ms 7000 KB Output is correct
30 Correct 2 ms 6900 KB Output is correct
31 Correct 2 ms 6748 KB Output is correct
32 Correct 2 ms 6748 KB Output is correct

Subtask #3
0 / 62.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6744 KB Output is correct
2 Correct 2 ms 6748 KB Output is correct
3 Correct 1 ms 6748 KB Output is correct
4 Correct 1 ms 6880 KB Output is correct
5 Correct 1 ms 6744 KB Output is correct
6 Correct 1 ms 6748 KB Output is correct
7 Correct 1 ms 6748 KB Output is correct
8 Correct 2 ms 6748 KB Output is correct
9 Correct 1 ms 6748 KB Output is correct
10 Correct 2 ms 6748 KB Output is correct
11 Correct 1 ms 6748 KB Output is correct
12 Correct 2 ms 6748 KB Output is correct
13 Correct 1 ms 6744 KB Output is correct
14 Correct 2 ms 6912 KB Output is correct
15 Correct 1 ms 6748 KB Output is correct
16 Correct 1 ms 6748 KB Output is correct
17 Correct 5 ms 6748 KB Output is correct
18 Correct 5 ms 6996 KB Output is correct
19 Correct 4 ms 6904 KB Output is correct
20 Correct 2 ms 6748 KB Output is correct
21 Correct 2 ms 6748 KB Output is correct
22 Correct 2 ms 6944 KB Output is correct
23 Correct 6 ms 6748 KB Output is correct
24 Correct 5 ms 6988 KB Output is correct
25 Correct 4 ms 6748 KB Output is correct
26 Correct 4 ms 6748 KB Output is correct
27 Correct 5 ms 6748 KB Output is correct
28 Correct 5 ms 7004 KB Output is correct
29 Correct 4 ms 7000 KB Output is correct
30 Correct 2 ms 6900 KB Output is correct
31 Correct 2 ms 6748 KB Output is correct
32 Correct 2 ms 6748 KB Output is correct
33 Correct 2515 ms 11772 KB Output is correct
34 Correct 593 ms 12152 KB Output is correct
35 Correct 1518 ms 10624 KB Output is correct
36 Execution timed out 3074 ms 14688 KB Time limit exceeded
37 Halted 0 ms 0 KB -