Submission #948755

#	Time	Username	Problem	Language	Result	Execution time	Memory
948755		phoenix0423	Dango Maker (JOI18_dango_maker)	C++17	13 / 100	1 ms	2648 KiB

dango_maker

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
#define fastio ios::sync_with_stdio(false), cin.tie(0)
#define pb push_back
#define eb emplace_back
#define f first
#define s second
#define int long long
#define lowbit(x) x&-x
const int maxn = 3000 + 5;
map<char, int> mp = {{'R', 0}, {'G', 1}, {'W', 2}};
int a[maxn][maxn], taken[maxn][maxn];
int n, m;

signed main(void){
	fastio;
	cin>>n>>m;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < m; j++){
			char c;
			cin>>c;
			a[i][j] = mp[c];
		}
	}
	int ans = 0;
	for(int i = 0; i < n; i++){
		for(int j = 0; j < m; j++){
			if(j < m - 2){
				if(a[i][j] == 0 && a[i][j + 1] == 1 && a[i][j + 2] == 2){
					if(taken[i][j + 1] + taken[i][j + 2] < 2){
						ans += 1 - taken[i][j + 1] - taken[i][j + 2];
						if(taken[i][j + 1]) taken[i][j + 1] = taken[i + 1][j + 1] = 0;
						if(taken[i][j + 2]) taken[i][j + 2] = 0;
						taken[i][j] = 1;
					}
				}
			}
			if(!taken[i][j] && i < n - 2){
				if(a[i][j] == 0 && a[i + 1][j] == 1 && a[i + 2][j] == 2){
					taken[i][j] = taken[i + 1][j] = taken[i + 2][j] = 1;
					ans++;
				}
			}
		}
	}
	cout<<ans<<"\n";
}

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