Submission #1284336

#	Time	Username	Problem	Language	Result	Execution time	Memory
1284336		WH8	Dango Maker (JOI18_dango_maker)	C++20	0 / 100	2 ms	576 KiB

dango_maker

#include <bits/stdc++.h>
using namespace std;
#define int long long 
#define pll pair<int, int>
#define mp make_pair
#define pb push_back
#define f first
#define s second
#define endl '\n'
#define ld long double
vector<tuple<int,int,int>> hd={{-1,1,1},{0,2,0},{1,1,1},{1,-1,1},{0,-2,0},{-1,-1,1}},
						vd={{-2,0,1},{-1,1,0},{1,1,0},{2,0,1},{1,-1,0},{-1,-1,0}};
signed main(){
	int h,w;cin>>h>>w;
	vector<vector<int>> m(h+2, vector<int>(w+2, 1));
	for(int i=1;i<=h;i++){
		for(int j=1;j<=w;j++){
			char c;cin>>c;
			if(c=='R')m[i][j]=0;
			else if(c=='G')m[i][j]=1;
			else m[i][j]=2;
		}
	}
	auto dfs=[&](auto && dfs, vector<vector<bool>> st) -> int{
		int cand=0;
		for(int i=1;i<=h;i++){
			for(int j=1;j<=w;j++){
				if(!st[i][j] or m[i][j]!=1)continue;
				if((st[i][j-1] and st[i][j+1]) and((m[i][j-1]==0 and m[i][j+1]==2) or (m[i][j+1]==0 and m[i][j-1]==2))){
					vector<vector<bool>> nw(st.begin(),st.end());
					nw[i][j-1]=0,nw[i][j]=0,nw[i][j+1]=0;
					cand=max(cand, dfs(dfs,nw)+1);
					//~ printf("%lld %lld, hori\n",i,j);
				}
				if((st[i-1][j] and st[i+1][j]) and ((m[i-1][j]==0 and m[i+1][j]==2) or (m[i+1][j]==0 and m[i-1][j]==2))){
					vector<vector<bool>> nw(st.begin(),st.end());
					nw[i-1][j]=0,nw[i][j]=0,nw[i+1][j]=0;
					cand=max(cand, dfs(dfs, nw)+1);
					//~ printf("%lld %lld, vert\n",i,j);
				}
			}
		}
		return cand;
	};
	vector<vector<bool>> temp(h+2, vector<bool>(w+2, 1));
	cout<<dfs(dfs, temp);
}

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