Submission #709710

#	Time	Username	Problem	Language	Result	Execution time	Memory
709710		Baytoro	Dango Maker (JOI18_dango_maker)	C++17	13 / 100	2055 ms	304 KiB

dango_maker

#include <bits/stdc++.h>
using namespace std;
#define ios ios::sync_with_stdio(false); cin.tie(NULL);cout.tie(NULL);
#define pb push_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define fr first
#define sc second
#define endl '\n'
#define ll long long
#define int long long
void fopn(string name){
	freopen((name+".in").c_str(),"r",stdin);
	freopen((name+".out").c_str(),"w",stdout);
}
const int INF=2e9,mod=1e9+7,N=2e5+10;
char c[15][15];
int used[15][15];
void solve(){
	int n,m;
	cin>>n>>m;
	int M=1;
	for(int i=0;i<n;i++){
		for(int j=0;j<m;j++){
			cin>>c[i][j];
			M*=3;
		}
	}
	int res=0;
	for(int mask=0;mask<M;mask++){
		int x=mask;
		int ans=0,ok=1;
		for(int i=n-1;i>=0 && ok;i--){
			for(int j=m-1;j>=0 && ok;j--){
				used[i][j]=0;
				if(x%3 && c[i][j]!='R') ok=0;
				else if(x%3){
					if(x%3==1){
						if(j+2>=m || c[i][j+1]!='G' || c[i][j+2]!='W') ok=0;
						else
							used[i][j]++,used[i][j+1]++,used[i][j+2]++;
					}
					else{
						if(i+2>=n || c[i+1][j]!='G' || c[i+2][j]!='W') ok=0;
						else
							used[i][j]++,used[i+1][j]++,used[i+2][j]++;
					}
				}
				x/=3;
			}
		}
		if(ok){
			for(int i=0;i<n;i++)
				for(int j=0;j<m;j++){
					if(used[i][j]>1) ok=0;
					if(used[i][j] && c[i][j]=='R') ans++;
				}
			if(ok){
				res=max(res,ans);
			}
		}
	}
	cout<<res;
}
main(){
	//fopn("cbarn");
	//ios;
	int T=1;
	//cin>>T;
	for(int i=1;i<=T;i++){
		//cout<<"Case #"<<i<<": ";
		solve();
		//cout<<endl;
	}
}

Compilation message (stderr)

dango_maker.cpp:65:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   65 | main(){
      | ^~~~
dango_maker.cpp: In function 'void fopn(std::string)':
dango_maker.cpp:13:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |  freopen((name+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
dango_maker.cpp:14:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 |  freopen((name+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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