Submission #526617

#	Time	Username	Problem	Language	Result	Execution time	Memory
526617		XEMPLI5	Arcade (NOI20_arcade)	C++17	18 / 100	49 ms	23652 KiB

Arcade

#include <bits/stdc++.h>
using namespace std;

#define gc getchar_unlocked
#define fo(i, n) for (int i = 0; i < n; i++)
#define rfo(i, n) for (int i = n - 1; i >= 0; i--)
#define REP(i, a, b) for (int i = a; i < b; i++)
#define RREP(i, a, b) for (int i = a; i >= b; i--)
#define ll long long
#define si(x) scanf("%d", &x)
#define sl(x) scanf("%lld", &x)
#define ss(s) scanf("%s", s)
#define pi(x) printf("%d\n", x)
#define pl(x) printf("%lld\n", x)
#define ps(s) printf("%s\n", s)
#define deb(x) cout << #x << "=" << x << endl
#define deb2(x, y) cout << #x << "=" << x << "," << #y << "=" << y << endl
#define deb3(x, y, z) cout << #x << "=" << x << "," << #y << "=" << y << "," << #z << "=" << z << endl
#define pb push_back
#define mp make_pair
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define clr(x) memset(x, 0, sizeof(x))
#define sortall(x) sort(all(x))
#define tr(it, a) for (auto it = a.begin(); it != a.end(); it++)
#define PI 3.1415926535897932384626

typedef pair<int, int> pii;
typedef pair<ll, ll> pl;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpii;
typedef vector<pl> vpl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;

int mpow(int base, int exp);
void dfs(int u, int par);

const int mod = 1'000'000'007;
const int N = 3e5, M = N;

vi g[N];
int a[N], ans[N];

void solve()
{
    int n, m;
    cin >> n >> m;
    vpii times(m);
    fo(i, m) cin >> times[i].F;
    fo(i, m) cin >> times[i].S;
    set<pii> inditimes;
    fo(i, m) inditimes.insert(times[i]);
    vector<vvi> dp(101, vvi(n + 100, vi(n + 100)));
    vi dx = {-1, -1, -1, 0, 0, 1, 1, 1}, dy = {-1, 0, 1, -1, 1, -1, 0, 1};
    sortall(times);
    bool one = true;
    REP(i, 1, m)
    {
        if (times[i].F - times[i - 1].F < abs(times[i].S - times[i - 1].S))
            one = false;
    }
    int ans = 0;
    REP(t, 1, 101)
    {
        REP(a, 1, n + 1)
        {
            REP(b, 1, n + 1)
            {
                if (a == b)
                    continue;
                fo(i, dx.size())
                {
                    int na = a + dx[i], nb = b + dy[i];
                    dp[t][a][b] = max(dp[t][a][b], dp[t - 1][na][nb]);
                }
                dp[t][a][b] += (inditimes.find({t, a}) != inditimes.end());
                dp[t][a][b] += (inditimes.find({t, b}) != inditimes.end());
                ans = max(ans, dp[t][a][b]);
            }
        }
    }
    if (one)
    {
        cout << 1 << '\n';
    }
    else if (ans == m)
        cout << 2 << '\n';
    else
        cout << 3 << '\n';
    return;
}

int main()
{
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    srand(chrono::high_resolution_clock::now().time_since_epoch().count());

    int t = 1;
    int cs = 0;
    while (t - cs)
    {
        solve();
        cs++;
    }

    return 0;
}

int mpow(int base, int exp)
{
    base %= mod;
    int result = 1;
    while (exp > 0)
    {
        if (exp & 1)
            result = ((ll)result * base) % mod;
        base = ((ll)base * base) % mod;
        exp >>= 1;
    }
    return result;
}

void ipgraph(int n, int m)
{
    int u, v;
    while (m--)
    {
        cin >> u >> v;
        u--, v--;
        g[u].pb(v);
        g[v].pb(u);
    }
}

void dfs(int u, int par)
{
    for (int v : g[u])
    {
        if (v == par)
            continue;
        dfs(v, u);
    }
}

Compilation message (stderr)

Arcade.cpp: In function 'void solve()':
Arcade.cpp:5:36: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define fo(i, n) for (int i = 0; i < n; i++)
......
   74 |                 fo(i, dx.size())
      |                    ~~~~~~~~~~~~     
Arcade.cpp:74:17: note: in expansion of macro 'fo'
   74 |                 fo(i, dx.size())
      |                 ^~

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 0 / 12
• Subtask 4: 0 / 21
• Subtask 5: 0 / 14
• Subtask 6: 0 / 20
• Subtask 7: 0 / 15