Submission #969453

#	Time	Username	Problem	Language	Result	Execution time	Memory
969453		batsukh2006	Dango Maker (JOI18_dango_maker)	C++17	100 / 100	788 ms	18884 KiB

dango_maker

#include<iostream>
#include<stdio.h>
#include<math.h>
#include<map>
#include<string>
#include<algorithm>
#include<vector>
#include<string.h>
#include<utility>
#include<set>
#include<cmath>
#include<queue>
#include<deque>
#include<functional>
#include<stack>
#include<limits.h>
#include<iomanip>
#include<unordered_map> 
#include<numeric>
#include<tuple>
using namespace std;
 
#define MOD 1000000007
#define int long long
#define endl '\n'
void solve(){
	int n,m; cin>>n>>m;
	vector<vector<char> > a(n+1,vector<char>(m+1));
	for(int i=1; i<=n; i++){
		for(int j=1; j<=m; j++){
			cin>>a[i][j];
		}
	}
	int ans=0;
	for(int z=2; z<=n+m; z++){
		int j=min(m,z-1),i=z-j;
		vector<vector<int> > dp(n+1,vector<int>(3));
		while(j>=1&&i<=n){
			dp[i][0]=max({dp[i-1][0],dp[i-1][1],dp[i-1][2]});
			if(a[i][j]=='G'){
				if(j>1&&j<m){
					if(a[i][j-1]=='R'&&a[i][j+1]=='W'){
						dp[i][1]=max(dp[i-1][0],dp[i-1][1])+1;
					}
				}
				if(i>1&&i<n){
					if(a[i-1][j]=='R'&&a[i+1][j]=='W'){
						dp[i][2]=max(dp[i-1][0],dp[i-1][2])+1;
					}
				}
			}
			i++,j--;
		}
		ans+=max({dp[i-1][0],dp[i-1][1],dp[i-1][2]});
	}
	cout<<ans;
}
signed main(){
    // freopen("248.in", "r", stdin);
    // freopen("248.out", "w", stdout);
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    int t=1;
//    cin>>t;	
    while(t--){
        solve();
        cout<<endl;
    }
    return 0;
}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

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