Submission #465982

#	Time	Username	Problem	Language	Result	Execution time	Memory
465982		Tsovak	Game (eJOI20_game)	C++17	0 / 100	1 ms	204 KiB

game

// -------------------- Includes -------------------- //
#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <stdio.h>
#include <cstdlib>
#include <stdlib.h>
#include <array>
#include <string>
#include <cstring>
#include <algorithm>
#include <cmath>
#include <math.h>
#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 <tuple>
#include <utility>
#include <cassert>
#include <assert.h>
#include <climits>
#include <limits.h>
#include <ctime>
#include <time.h>
#include <random>
#include <chrono>
#include <fstream>
using namespace std;

// -------------------- Typedefs -------------------- //

typedef long long ll;
typedef unsigned long long ull;
typedef double db;
typedef long double ld;

// -------------------- Defines -------------------- //

#define pr pair
#define mpr make_pair
#define ff first
#define ss second

#define mset multiset
#define mmap multimap
#define uset unordered_set
#define umap unordered_map
#define umset unordered_multiset
#define ummap unordered_multimap
#define pqueue priority_queue

#define sz(x) (int((x).size()))
#define len(x) (int((x).length()))
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define clr(x) (x).clear()

#define pf push_front
#define pb push_back
#define popf pop_front
#define popb pop_back
#define ft front
#define bk back

#define lb lower_bound
#define ub upper_bound
#define bs binary_search

// -------------------- Constants -------------------- //

const int MAX = int(1e9 + 5);
const ll MAXL = ll(1e18 + 5);
const ll MOD = ll(1e9 + 7);
const ll MOD2 = ll(998244353);

// -------------------- Functions -------------------- //

void fastio()
{
	ios_base::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	return;
}

void precision(int x)
{
	cout.setf(ios::fixed | ios::showpoint);
	cout.precision(x);
	return;
}

ll gcd(ll a, ll b)
{
	if (a > b) {
		swap(a, b);
	}
	if (a == 0) {
		return b;
	}
	if (a == b) {
		return a;
	}
	return gcd(b % a, a);
}

ll lcm(ll a, ll b)
{
	return a / gcd(a, b) * b;
}

bool is_prime(ll a)
{
	int i;
	for (i = 2; i * i <= a; i++) {
		if (a % ll(i) == 0) {
			return false;
		}
	}
	return true;
}

bool is_square(ll a)
{
	ll b = ll(sqrt(a));
	return (b * b == a);
}

bool is_cube(ll a)
{
	ll b = ll(cbrt(a));
	return (b * b * b == a);
}

int digit_sum(ll a)
{
	int sum = 0;
	while (a) {
		sum += int(a % 10);
		a /= 10;
	}
	return sum;
}

ll binpow(ll a, int b)
{
	ll ans = 1;
	while (b) {
		if ((b & 1) == 1) {
			ans *= a;
		}
		b >>= 1;
		a *= a;
	}
	return ans;
}

ll binpow_by_mod(ll a, ll b, ll mod)
{
	ll ans = 1;
	while (b) {
		if ((b & 1) == 1) {
			ans *= a;
			ans %= mod;
		}
		b >>= 1;
		a *= a;
		a %= mod;
	}
	return ans;
}

ll factorial(int a)
{
	int i;
	ll ans = 1;
	for (i = 2; i <= a; i++) {
		ans *= ll(i);
	}
	return ans;
}

ll factorial_by_mod(int a, ll mod)
{
	int i;
	ll ans = 1;
	for (i = 2; i <= a; i++) {
		ans *= ll(i);
		ans %= mod;
	}
	return ans;
}

// -------------------- Solution -------------------- //

const int N = 25, M = 25;
vector<pr<int, int>> g[N][M];
int color[N][M];
int n, m;

int a[405];

void dfs(int x, int y, int k)
{
	int i, j;
	int xx, yy;
	color[x][y] = k;
	for (i = 0; i < sz(g[x][y]); i++) {
		xx = g[x][y][i].ff;
		yy = g[x][y][i].ss;
		if (color[xx][yy]) {
			continue;
		}
		dfs(xx, yy, k);
	}
	return;
}

void input_()
{
	int i, j;
	string s;
	cin >> n >> m;
	for (i = 0; i <= n; i++) {
		cin >> s;
		if (i > 0 && i < n) {
			for (j = 0; j < m; j++) {
				if (s[j] == '0') {
					g[i][j + 1].pb(mpr(i + 1, j + 1));
					g[i + 1][j + 1].pb(mpr(i, j + 1));
				}
			}
		}
	}
	for (i = 1; i <= n; i++) {
		cin >> s;
		for (j = 1; j < m; j++) {
			if (s[j] == '0') {
				g[i][j].pb(mpr(i, j + 1));
				g[i][j + 1].pb(mpr(i, j));
			}
		}
	}
	return;
}

void solve()
{
	int i, j;
	int k = 1;
	input_();
	for (i = 1; i <= n; i++) {
		for (j = 1; j <= m; j++) {
			if (!color[i][j] && sz(g[i][j])) {
				dfs(i, j, k);
				k++;
			}
		}
	}
	k--;
	for (i = 1; i <= n; i++) {
		for (j = 1; j <= m; j++) {
			a[color[i][j]]++;
		}
	}
	/*for (i = 1; i <= n; i++) {
		for (j = 1; j <= m; j++) {
			cout << '.' << i << ' ' << j << endl;
			for (auto x : g[i][j]) {
				cout << x.ff << ' ' << x.ss << endl;
			}
		}
	}*/
	if (k == 1) {
		cout << a[1] << endl;
	}
	else {

	}
	return;
}

void precalc()
{
	return;
}

int main()
{
	fastio();

	precalc();

	int tests = 1, tc;
	//cin >> tests;
	for (tc = 1; tc <= tests; tc++) {
		solve();
	}

	//cout << db(clock()) / CLOCKS_PER_SEC << endl;

	return 0;
}

/*
	# # # #   # # # #   # # # #   #       #    #       #     #
	   #      #         #     #    #     #    # #      #   #
	   #      # # # #   #     #     #   #    #   #     # #
	   #            #   #     #      # #    # # # #    #   #
	   #      # # # #   # # # #       #    #       #   #     #
*/

Compilation message (stderr)

game.cpp: In function 'void dfs(int, int, int)':
game.cpp:216:9: warning: unused variable 'j' [-Wunused-variable]
  216 |  int i, j;
      |         ^

• Subtask 1: 0 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 20