Submission #714174

#	Time	Username	Problem	Language	Result	Execution time	Memory
714174		089487	Dango Maker (JOI18_dango_maker)	C++14	0 / 100	1 ms	340 KiB

dango_maker

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx,popcnt,sse4,abm")
#include<bits/stdc++.h>
#define int long long
#define quick ios::sync_with_stdio(0);cin.tie(0);
#define rep(x,a,b) for(int x=a;x<=b;x++)
#define repd(x,a,b) for(int x=a;x>=b;x--)
#define lowbit(x) (x&-x)
#define sz(x) (int)(x.size())
#define F first
#define S second
#define all(x) x.begin(),x.end()
#define mp make_pair
#define eb emplace_back
using namespace std;
typedef pair<int,int> pii;
void debug(){
    cout<<"\n";
}
template <class T,class ... U >
void debug(T a, U ... b){
    cout<<a<<" ",debug(b...);
}
const int N=3e3+7;
const int INF=1e18;
char c[N][N];
int dp[N][3];
signed main(){
	quick

	int n,m;
	cin>>n>>m;
	rep(i,1,n){
		rep(j,1,m) cin>>c[i][j];
	}
	int ans=0;
	rep(l,2,n+m){
		fill(dp[0],dp[N-1]+3,0);
		int ret=0;
		rep(i,1,n){
			rep(x,0,2){
				dp[i][0]=max(dp[i][0],dp[i-1][x]);
			}
			int j=l-i;
			if(j<=0||j>m) continue;
			if(i+1<=n&&i-1>=1&&c[i-1][j]=='R'&&c[i][j]=='G'&&c[i+1][j]=='W'){
				dp[i][1]=max(dp[i-1][0],dp[i-1][2])+1;
			}
			if(j+1<=m&&j-1>=1&&c[i][j-1]=='R'&&c[i][j]=='G'&&c[i][j+1]=='W'){
				dp[i][2]=max(dp[i-1][0],dp[i-1][1])+1;
			}
			ret=max({dp[i][0],dp[i][1],dp[i][2],ret});
		}
		ans+=ret;
	}
	cout<<ans<<"\n";
	return 0;
}

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