Submission #892849

#	Time	Username	Problem	Language	Result	Execution time	Memory
892849		Nurislam	Dango Maker (JOI18_dango_maker)	C++14	13 / 100	2051 ms	151960 KiB

dango_maker

#include <bits/stdc++.h>
using namespace std;/*
<<<<It's never too late for a new beginning in your life>>>>
Today is hard
  tomorrow will worse
  but the day after tomorrow will be the sunshine..
 
HARD WORK BEATS TALENT WHEN TALENT DOESN'T WORK HARD............
Never give up  */
///*                                                    __                    __                        __                    */
///*        ======     _      /| /|  __   _            /   |  |   /|  |   @  |    |  |  | /   /| |\  | /   |  |  @ | /        */
///* \-       ||  |_| |_     / |/ | |  | |_  |-        |   |--|  /-|  |   |  \ \  |==|  |-   /=| | \ | |   |--|  | |-         */
///*          ||  | | |_    /     | |__|  _| |_        \__ |  | /  |  |__ |  __|  |  |  | \ /  | |  \| \__ |  |  | | \        */
///*                                                                                                                          */
#define ff first
#define ss second
#define pb push_back
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define int long long
typedef vector<int> vi;
typedef pair<int,int> pii;
typedef vector<pair<int,int> > vii;
const long long N = 4e3+50, inf = 1e18, mod = 1e9+7;
int n, m, ans;
int a[N][N];
map<vector<vi>, bool> mp;
void rec(vector<vi> &us, int cnt){
	if(mp[us])return;
	mp[us]=1;
	ans = max(ans, cnt);
	for(int i = 0; i < n; i++){
		for(int j = 0; j < m - 2; j++){
			if(a[i][j] == 1 && a[i][j+1] == 2 && a[i][j+2] == 3 && (!us[i][j] && !us[i][j+1] && !us[i][j+2])){
				us[i][j] = 1;us[i][j+1] = 1;us[i][j+2] = 1;
				if(!mp[us])rec(us, cnt+1);
				us[i][j] = 0;us[i][j+1] = 0;us[i][j+2] = 0;
			}
		}
	}
	for(int i = 0; i < n - 2; i++){
		for(int j = 0; j < m; j++){
			if(a[i][j] == 1 && a[i+1][j] == 2 && a[i+2][j] == 3 && (!us[i][j] && !us[i+1][j] && !us[i+2][j])){
				us[i][j] = 1;us[i+1][j] = 1;us[i+2][j] = 1;
				if(!mp[us])rec(us, cnt+1);
				us[i][j] = 0;us[i+1][j] = 0;us[i+2][j] = 0;
			}
		}
	}
}
void solve(){
	cin >> n >> m;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < m; j++){
			char x;
			cin >> x;
			if(x=='R')a[i][j] = 1;
			else if(x=='G')a[i][j] = 2;
			else a[i][j] = 3;
		}
	}
	vector<vector<int>> us(n, vector<int> (m));
	rec(us, 0);
	cout << ans << '\n';
}
main(){
	ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
	int t = 1;
	//~ cin >> t;
	while(t--){
		solve();
	}
}

Compilation message (stderr)

dango_maker.cpp:66:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   66 | main(){
      | ^~~~

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