Submission #983774

#	Time	Username	Problem	Language	Result	Execution time	Memory
983774		gaga999	Game (APIO22_game)	C++17	2 / 100	2 ms	6900 KiB

game

// #pragma GCC optimize("Ofast,no-stack-protector")
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx,avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
#define lowbit(x) ((x) & -(x))
#define ml(a, b) ((1ll * (a) * (b)) % M)
#define tml(a, b) (a) = ((1ll * (a) * (b)) % M)
#define ad(a, b) ((0ll + (a) + (b)) % M)
#define tad(a, b) (a) = ((0ll + (a) + (b)) % M)
#define mi(a, b) ((0ll + M + (a) - (b)) % M)
#define tmi(a, b) (a) = ((0ll + M + (a) - (b)) % M)
#define tmin(a, b) (a) = min((a), (b))
#define tmax(a, b) (a) = max((a), (b))
#define iter(a) (a).begin(), (a).end()
#define riter(a) (a).rbegin(), (a).rend()
#define inin(a, b) memset((a), (b), sizeof(a))
#define cpy(a, b) memcpy((a), (b), sizeof(a))
#define uni(a) a.resize(unique(iter(a)) - a.begin())
#define size(x) (int)x.size()
#define pb emplace_back
#define mpr make_pair
#define ls(i) ((i) << 1)
#define rs(i) ((i) << 1 | 1)
#define INF 0x3f3f3f3f
#define NIF 0xc0c0c0c0
#define eps 1e-9
#define F first
#define S second
#define AC cin.tie(0)->sync_with_stdio(0)
using namespace std;
typedef long long llt;
typedef unsigned long long ull;
typedef __int128_t lll;
typedef pair<int, int> pii;
typedef pair<double, double> pdd;
typedef pair<llt, llt> pll;
typedef pair<llt, int> pli;
typedef complex<double> cd;
// const int M = 998244353;

// random_device rm;
// mt19937 rg(rm());
// default_random_engine rg(rm());
// uniform_int_distribution<int> rd(INT_MIN, INT_MAX);
// uniform_real_distribution<double> rd(0, M_PI);

void db() { cerr << "\n"; }
template <class T, class... U>
void db(T a, U... b) { cerr << a << " ", db(b...); }

inline char gc()
{
    const static int SZ = 1 << 16;
    static char buf[SZ], *p1, *p2;
    if (p1 == p2 && (p2 = buf + fread(p1 = buf, 1, SZ, stdin), p1 == p2))
        return -1;
    return *p1++;
}
void rd() {}
template <typename T, typename... U>
void rd(T &x, U &...y)
{
    x = 0;
    bool f = 0;
    char c = gc();
    while (!isdigit(c))
        f ^= !(c ^ 45), c = gc();
    while (isdigit(c))
        x = (x << 1) + (x << 3) + (c ^ 48), c = gc();
    f && (x = -x), rd(y...);
}

template <typename T>
void prt(T x)
{
    if (x < 0)
        putchar('-'), x = -x;
    if (x > 9)
        prt(x / 10);
    putchar((x % 10) ^ 48);
}

const int N = 3e4 + 5, B = 500;
typedef bitset<N> bit;
int n, k, mx[N], mn[N];
bool ov = 0;
vector<int> e1[N], e2[N], pl;
bit to[N], fr[N];
void init(int _n, int _k)
{
    n = _n, k = _k;
    inin(mn, INF), inin(mx, -1);
    for (int i = 0; i < k; i++)
        mn[i] = mx[i] = i;
    for (int i = 0; i < n; i++)
        to[i][i] = fr[i][i] = 1;
}

void dfs2(int u)
{
    if (u < k)
        return;
    for (int v : e2[u])
    {
        if (mn[v] <= mn[u])
            continue;
        mn[v] = mn[u];
        dfs2(v);
    }
}

void dfs1(int u)
{
    if (u < k)
        return;
    for (int v : e1[u])
    {
        if (mx[v] >= mx[u])
            continue;
        mx[v] = mx[u];
        dfs1(v);
    }
}

void dfs3(int u)
{
    if (u < k)
        return;
    for (int v : e2[u])
    {
        if (((to[v] ^ to[u]) & to[v]).any())
            continue;
        to[v] |= to[u];
        dfs1(v);
    }
}

void dfs4(int u)
{
    if (u < k)
        return;
    for (int v : e1[u])
    {
        if (((fr[v] ^ fr[u]) & fr[v]).any())
            continue;
        fr[v] |= fr[u];
        dfs1(v);
    }
}

int add_teleporter(int u, int v)
{
    if (max(u, v) < k)
        return u >= v;
    e1[u].pb(v), e2[v].pb(u);
    tmin(mn[u], mn[v]);
    tmax(mx[v], mx[u]);
    fr[v][u] = 1, to[u][v] = 1;
    for (int p : pl)
    {
        if ((to[u] | fr[p]).any())
            to[u][p] = 1, tmin(mn[u], mn[p]);
        if ((fr[v] | to[p]).any())
            fr[v][p] = 1, tmax(mx[v], mx[u]);
    }
    pl.pb(u), pl.pb(v);
    if (size(pl) > B)
    {
        for (int i = 0; i < n; i++)
            dfs1(i), dfs2(i), dfs3(i), dfs4(i);
    }
    if ((u >= k && mx[u] >= mn[u]) || (v >= k && mx[v] >= mn[v]))
        ov = 1;
    return ov;
}

// signed main()
// {
//     int n, k, q;
//     rd(n, q, k);
//     init(n, k);
//     for (int i = 0; i < q; i++)
//     {
//         int x, y;
//         rd(x, y);
//         if (add_teleporter(x, y))
//         {
//             // for (int i = 0; i < n; i++)
//             //     db(mx[i], mn[i]);
//             // db(i, x, y);
//             db(i);
//             exit(0);
//         }
//     }
//     db(q);
// }

• Subtask 1: 2 / 2
• Subtask 2: 0 / 10
• Subtask 3: 0 / 18
• Subtask 4: 0 / 30
• Subtask 5: 0 / 40