Submission #969014

#	Time	Username	Problem	Language	Result	Execution time	Memory
969014		Mher777	Cop and Robber (BOI14_coprobber)	C++17	16 / 100	37 ms	2864 KiB

coprobber

#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <iomanip>
#include <array>
#include <string>
#include <algorithm>
#include <cmath>
#include <set>
#include <map>
#include <unordered_set>
#include <unordered_map>
#include <vector>
#include <stack>
#include <queue>
#include <deque>
#include <bitset>
#include <list>
#include <iterator>
#include <numeric>
#include <complex>
#include <utility>
#include <random>
#include <cassert>
#include <fstream>
#include "coprobber.h"
using namespace std;
mt19937 rnd(7069);

/* -------------------- Typedefs -------------------- */

typedef int itn;
typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef float fl;
typedef long double ld;

/* -------------------- Usings -------------------- */

using vi = vector<int>;
using vll = vector<ll>;
using mii = map<int, int>;
using mll = map<ll, ll>;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

/* -------------------- Defines -------------------- */

#define ff first
#define ss second
#define pub push_back
#define pob pop_back
#define puf push_front
#define pof pop_front
#define mpr make_pair
#define yes cout<<"Yes\n"
#define no cout<<"No\n"
#define all(x) (x).begin(), (x).end()
#define USACO freopen("feast.in", "r", stdin); freopen("feast.out", "w", stdout);

/* -------------------- Constants -------------------- */

const int dx[8] = { -1, 0, 1, 0, -1, -1, 1, 1 };
const int dy[8] = { 0, -1, 0, 1, -1, 1, -1, 1 };
const int MAX = int(1e9 + 5);
const ll MAXL = ll(1e18) + 5ll;
const ll MOD = ll(1000000007);
const ll MOD2 = ll(998244353);

const int N = 505;
vi g[N];
int dist[N][N];
int n, cur;

void bfs(int s) {
    queue<int> q;
    vi used(n);
    used[s] = 1;
    q.push(s);
    while (!q.empty()) {
        int u = q.front();
        q.pop();
        for (auto to : g[u]) {
            if (!used[to]) {
                dist[s][to] = dist[s][u] + 1;
                used[to] = 1;
                q.push(to);
            }
        }
    }
}

int start(int N, bool A[MAX_N][MAX_N]) {
    n = N;
    cur = 0;
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            if (!A[i][j]) continue;
            g[i].pub(j);
        }
    }
    for (int i = 0; i < n; ++i) bfs(i);
    return 0;
}

int nextMove(int R) {
    int r = R;
    int d = dist[cur][r];
    for (auto to : g[cur]) {
        if (dist[to][r] == d - 1) {
            cur = to;
            return to;
        }
    }
}

Compilation message (stderr)

coprobber.cpp: In function 'int nextMove(int)':
coprobber.cpp:115:1: warning: control reaches end of non-void function [-Wreturn-type]
  115 | }
      | ^

• Subtask 1: 16 / 16
• Subtask 2: 0 / 14
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40