Submission #116098

#	Time	Username	Problem	Language	Result	Execution time	Memory
116098		faustaadp	Dango Maker (JOI18_dango_maker)	C++17	13 / 100	2 ms	384 KiB

dango_maker

#include<bits/stdc++.h>
typedef long long ll;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
using namespace std;
ll n,m,i,j,has;
char a[3030][3030];
int p[9000010];
int x[9000010];
int y[9000010];
int X[9000010];
int Y[9000010];
ll car(ll aa)
{
	if(p[aa]==aa)
		return aa;
	else
		return p[aa]=car(p[aa]);
}
void gab(ll aa,ll bb)
{
	p[car(aa)]=car(bb);
}
int main()
{
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	cin>>n>>m;
	for(i=1;i<=n;i++)
		for(j=1;j<=m;j++)
		{
			p[(i-1)*m+j]=(i-1)*m+j;
			cin>>a[i][j];
		}
	for(i=1;i<=n;i++)
		for(j=1;j<=m;j++)
		{
			if(j+2<=m&&a[i][j]=='R'&&a[i][j+1]=='G'&&a[i][j+2]=='W')
			{
				has++;
				x[(i-1)*m+j]++;
				gab((i-1)*m+j,(i-1)*m+j+1);
				gab((i-1)*m+j,(i-1)*m+j+2);
			}
			if(i+2<=n&&a[i][j]=='R'&&a[i+1][j]=='G'&&a[i+2][j]=='W')
			{
				has++;
				y[(i-1)*m+j]++;
				gab((i-1)*m+j,i*m+j);
				gab((i+1)*m+j,i*m+j);
			}				
		}
	for(i=1;i<=n*m;i++)
	{
		X[car(i)]+=x[i];
		Y[car(i)]+=y[i];
	}
	for(i=1;i<=n*m;i++)
		has-=min(X[i],Y[i]);
	cout<<has<<"\n";
}

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