답안 #243749

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
243749 2020-07-01T18:29:11 Z SamAnd I want to be the very best too! (NOI17_pokemonmaster) C++17
0 / 100
273 ms 33392 KB
#include <bits/stdc++.h>
using namespace std;
#define m_p make_pair
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define fi first
#define se second
typedef long long ll;
mt19937 rnd(chrono::steady_clock::now().time_since_epoch().count());
mt19937 rnf(2106);
const int N = 50004;
const int xx[4] = {0, 1, 0, -1};
const int yy[4] = {1, 0, -1, 0};

int n, m, q;
int** a;

int p0[N];

int fi(int x)
{
    if (x == p0[x])
        return x;
    return p0[x] = fi(p0[x]);
}

void kpc(int x, int y)
{
    x = fi(x);
    y = fi(y);
    p0[x] = y;
}

int uu(int x, int y)
{
    return (x - 1) * m + y;
}

vector<int> g[N];

const int k = 18;
int p[N][k];

int tin[N], tout[N], ti;

void dfs0(int x, int p0)
{
    tin[x] = ++ti;
    p[x][0] = p0;
    for (int i = 1; i < k; ++i)
        p[x][i] = p[p[x][i - 1]][i - 1];
    for (int i = 0; i < g[x].size(); ++i)
    {
        int h = g[x][i];
        dfs0(h, x);
    }
    tout[x] = ti;
}

bool isp(int x, int y)
{
    return (tin[x] <= tin[y] && tout[y] <= tout[x]);
}

int go(int x, int y)
{
    for (int i = k - 1; i >= 0; --i)
    {
        int xx = p[x][i];
        int ux = (xx - 1) / m + 1;
        int uy = xx - (ux - 1) * m;
        if (a[ux][uy] <= y)
            x = xx;
    }
    return x;
}

int yyz;
int yyr[N * k * 5];
struct ban
{
    int x, y;
    ban *l, *r;
    int q;
    ban(){}
    ban(int x)
    {
        this->x = x;
        y = yyr[yyz++];
        l = r = 0;
        q = 1;
    }
};
typedef ban* pban;

namespace treap
{
    int getq(pban t)
    {
        if (t == 0)
            return 0;
        return t->q;
    }

    void ubd(pban t)
    {
        if (t == 0)
            return;
        t->q = getq(t->l) + 1 + getq(t->r);
    }

    void mer(pban l, pban r, pban& t)
    {
        if (l == 0)
        {
            t = r;
            return;
        }
        if (r == 0)
        {
            t = l;
            return;
        }
        if (l->y > r->y)
        {
            mer(l->r, r, l->r);
            t = l;
        }
        else
        {
            mer(l, r->l, r->l);
            t = r;
        }
        ubd(t);
    }

    void spl(pban t, int x, pban& l, pban& r)
    {
        if (t == 0)
        {
            l = r = 0;
            return;
        }
        if (x < t->x)
        {
            spl(t->l, x, l, t->l);
            r = t;
        }
        else
        {
            spl(t->r, x, t->r, r);
            l = t;
        }
        ubd(l);
        ubd(r);
    }

    void ave(pban& t, int x)
    {
        pban l, r;
        spl(t, x, l, r);
        pban m = new ban(x);
        mer(l, m, t);
        mer(t, r, t);
    }

    void han(pban& t, int x)
    {
        pban l, m, r;
        spl(t, x, m, r);
        spl(m, x - 1, l, m);
        mer(l, r, t);
    }

    int ph(pban t, int x)
    {
        pban l, r;
        spl(t, x, l, r);
        int ans = getq(l);
        mer(l, r, t);
        return ans;
    }
};

pban t[N * 4];

void ubd(int tl, int tr, int x, int y, bool z, int pos)
{
    if (!z)
        treap::han(t[pos], y);
    else
        treap::ave(t[pos], y);
    if (tl == tr)
        return;
    int m = (tl + tr) / 2;
    if (x <= m)
        ubd(tl, m, x, y, z, pos * 2);
    else
        ubd(m + 1, tr, x, y, z, pos * 2 + 1);
}

int qry(int tl, int tr, int l, int r, int x, int pos)
{
    if (l > r)
        return 0;
    if (tl == l && tr == r)
    {
        return treap::ph(t[pos], x);
    }
    int m = (tl + tr) / 2;
    return (qry(tl, m, l, min(m, r), x, pos * 2) +
            qry(m + 1, tr, max(m + 1, l), r, x, pos * 2 + 1));
}

set<int> s[N];

void ave(int i, int x)
{
    s[i].insert(x);
    auto it = s[i].find(x);
    --it;
    int hl = *it;
    ++it;
    ++it;
    if (it != s[i].end())
    {
        ubd(1, n * m, *it, hl, false, 1);
        ubd(1, n * m, *it, x, true, 1);
    }
    ubd(1, n * m, x, hl, true, 1);
}

void han(int i, int x)
{
    auto it = s[i].find(x);
    --it;
    int hl = *it;
    ++it;
    ++it;
    if (it != s[i].end())
    {
        ubd(1, n * m, *it, x, false, 1);
        ubd(1, n * m, *it, hl, true, 1);
    }
    ubd(1, n * m, x, hl, false, 1);
    s[i].erase(x);
}

// for subtask 4
int t1[N * 4];

void ubd1(int tl, int tr, int x, int y, int pos)
{
    if (tl == tr)
    {
        t1[pos] = y;
        return;
    }
    int m = (tl + tr) / 2;
    if (x <= m)
        ubd1(tl, m, x, y, pos * 2);
    else
        ubd1(m + 1, tr, x, y, pos * 2 + 1);
    t1[pos] = t1[pos * 2] + t1[pos * 2 + 1];
}

int qry1(int tl, int tr, int l, int r, int pos)
{
    if (l > r)
        return 0;
    if (tl == l && tr == r)
        return t1[pos];
    int m = (tl + tr) / 2;
    return (qry1(tl, m, l, min(m, r), pos * 2) +
            qry1(m + 1, tr, m + 1, r, pos * 2 + 1));
}
//

int b[N];

void solv()
{
    scanf("%d%d%d", &n, &m, &q);
    a = new int*[n + 5];
    for (int i = 0; i < n + 5; ++i)
    {
        a[i] = new int[m + 5];
    }
    for (int i = 1; i <= n; ++i)
    {
        for (int j = 1; j <= m; ++j)
        {
            scanf("%d", &a[i][j]);
        }
    }

    vector<pair<int, pair<int, int> > > v;
    for (int i = 1; i <= n; ++i)
    {
        for (int j = 1; j <= m; ++j)
        {
            v.push_back(m_p(a[i][j], m_p(i, j)));
        }
    }
    sort(all(v));

    for (int i = 1; i <= n * m; ++i)
        p0[i] = i;
    for (int i = 0; i < n * m; ++i)
    {
        int x = v[i].se.fi;
        int y = v[i].se.se;
        for (int i = 0; i < 4; ++i)
        {
            int hx = x + xx[i];
            int hy = y + yy[i];
            if (!(hx >= 1 && hx <= n && hy >= 1 && hy <= m))
                continue;
            if (a[hx][hy] > a[x][y])
                continue;
            if (fi(uu(x, y)) != fi(uu(hx, hy)))
            {
                g[uu(x, y)].push_back(fi(uu(hx, hy)));
                kpc(uu(hx, hy), uu(x, y));
            }
        }
    }
    dfs0(uu(v.back().se.fi, v.back().se.se), uu(v.back().se.fi, v.back().se.se));

    for (int i = 1; i < N; ++i)
    {
        s[i].insert(-i);
    }

    for (int x = 1; x <= n * m; ++x)
    {
        scanf("%d", &b[x]);
        //ave(b[x], tin[x]);
        ubd1(1, n * m, tin[x], b[x] - 1, 1);
    }

    while (q--)
    {
        int ty;
        scanf("%d", &ty);
        if (ty == 1)
        {
            int x, y, p;
            scanf("%d%d%d", &y, &x, &p);
            x = uu(x, y);
            //han(b[x], tin[x]);
            b[x] = p;
            //ave(b[x], tin[x]);
            ubd1(1, n * m, tin[x], p - 1, 1);
        }
        else
        {
            int x, y, l;
            scanf("%d%d%d", &y, &x, &l);
            if (a[x][y] > l)
            {
                printf("0\n");
                continue;
            }
            x = uu(x, y);
            x = go(x, l);
            //printf("%d\n", qry(1, n * m, tin[x], tout[x], tin[x] - 1, 1));
            int qq = qry1(1, n * m, tin[x], tout[x], 1);
            if (qq == 0 || qq == tout[x] - tin[x] + 1)
                printf("%d\n", 1);
            else
                printf("%d\n", 2);
        }
    }
}

int main()
{
    #ifdef SOMETHING
    freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);
    #endif // SOMETHING
    //ios_base::sync_with_stdio(false), cin.tie(0);
    for (int i = 0; i < N * k * 5; ++i)
    {
        yyr[i] = i;
    }
    for (int i = N * k * 5 - 1; i >= 0; --i)
    {
        swap(yyr[i], yyr[rnd() % (i + 1)]);
    }
    solv();
    return 0;
}

//while ((double)clock() / CLOCKS_PER_SEC <= 0.9){}

Compilation message

pokemonmaster.cpp: In function 'void dfs0(int, int)':
pokemonmaster.cpp:52:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < g[x].size(); ++i)
                     ~~^~~~~~~~~~~~~
pokemonmaster.cpp: In function 'void solv()':
pokemonmaster.cpp:283:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d", &n, &m, &q);
     ~~~~~^~~~~~~~~~~~~~~~~~~~~~
pokemonmaster.cpp:293:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d", &a[i][j]);
             ~~~~~^~~~~~~~~~~~~~~~
pokemonmaster.cpp:337:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &b[x]);
         ~~~~~^~~~~~~~~~~~~
pokemonmaster.cpp:345:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d", &ty);
         ~~~~~^~~~~~~~~~~
pokemonmaster.cpp:349:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d%d%d", &y, &x, &p);
             ~~~~~^~~~~~~~~~~~~~~~~~~~~~
pokemonmaster.cpp:359:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d%d%d", &y, &x, &l);
             ~~~~~^~~~~~~~~~~~~~~~~~~~~~
# 결과 실행 시간 메모리 Grader output
1 Incorrect 161 ms 33392 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 176 ms 32880 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 273 ms 32880 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 161 ms 33392 KB Output isn't correct
2 Halted 0 ms 0 KB -
# 결과 실행 시간 메모리 Grader output
1 Incorrect 161 ms 33392 KB Output isn't correct
2 Halted 0 ms 0 KB -