Submission #1050090

#	Time	Username	Problem	Language	Result	Execution time	Memory
1050090		vjudge1	Dango Maker (JOI18_dango_maker)	C++17	0 / 100	12 ms	4580 KiB

dango_maker

#include <bits/stdc++.h>

#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,lzcnt,mmx,abm,avx,avx2,fma")
#pragma GCC optimize("Ofast,unroll-loops,no-stack-protector,fast-math,inline")

using namespace std;

#define speed ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0)
#define vc vector
#define mp make_pair
#define pb push_back
#define fi first
#define se second
#define ll long long
#define all(x) x.begin(),x.end()
#define sz(x) (int)x.size()
#define int ll

const int N = 3005;
const int M = 3005;
const int mod = 1e9 + 7;
const int block = 500;

int n, m;
char a[N][N];
bool used[N][N];
int tp[N][N];

void solve() {
	cin >> n >> m;
    for ( int i = 1; i <= n; i++ ) {
        for ( int j = 1; j <= m; j++ ) {
            cin >> a[i][j];
        }
    }
    int k = n * m, res = 0;
    for ( int i = 0; i < (1<<k); i++ ) {
        for ( int i = 1; i <= n; i++ ) {
            for ( int j = 1; j <= m; j++ ) {
                used[i][j] = 0;
                tp[i][j] = 0;
            }
        }
        vc <int> save;
        for ( int p = 0; p < k; p++ ) {
            if ( ( i >> p ) & 1 ) {
                save.pb(p);
            }
        }
        if ( sz(save) > k / 3 ) {
            continue;
        }
        for ( auto p : save ) {
            for ( int j = 0; j < ( 1 << k ); j++ ) {
                int x = p / n + 1, y = ( p % m + 1 );
                if ( ( j >> p ) & 1 ) {
                    tp[x][y] = 2;
                }
                else {
                    tp[x][y] = 1;
                }
            }
        }
        bool ok = 1;
        for ( int x = 1; x <= n; x++ ) {
            for ( int y = 1; y <= m; y++ ) {
                if ( tp[x][y] == 1 ) {
                    string s = "";
                    s += a[x][y]; s += a[x][y+1]; s += a[x][y+2];
                    if ( y + 2 > m || used[x][y] || used[x][y+1] || used[x][y+2] || s != "RGW" ) ok = 0;
                    else {
                        used[x][y] = 1;
                        used[x][y+1] = 1;
                        used[x][y+2] = 1;
                    }
                }
                else if ( tp[x][y] == 2 ) {
                    string s = "";
                    s += a[x][y]; s += a[x+1][y]; s += a[x+2][y];
                    if ( x + 2 > n || used[x][y] || used[x+1][y] || used[x+2][y] || s != "RGW" ) ok = 0;
                    else {
                        used[x][y] = 1;
                        used[x+1][y] = 1;
                        used[x+2][y] = 1;
                    }
                }
            }
        }
        if ( ok ) res = max(res,sz(save));
    }
    cout << res;
}

signed main() {
	speed;
	int tt;
	//cin >> tt;
    tt = 1;
	while ( tt-- ) {
		solve();
		cout << '\n';
	}
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 20
• Subtask 3: 0 / 67