Submission #41590

#	Time	Username	Problem	Language	Result	Execution time	Memory
41590		Turysbek	Dango Maker (JOI18_dango_maker)	C++14	13 / 100	2 ms	756 KiB

dango_maker

// In the name of God

#include <bits/stdc++.h>

using namespace std;

#define	ll long long
#define ull unsigned long long
#define ld long double
#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define sz(a) int(a.size())
#define all(v) v.begin(), v.end()
#define bpc(v) __builtin_popcountll(v)
#define IOS ios_base :: sync_with_stdio(false); cin.tie(NULL);
#define itr iterator                                          	
#define rep(i, a, b) for (int i = a; i <= b; ++i)
#define per(i, a, b) for (int i = a; i >= b; --i)
#define ub upper_bound
#define lb lower_bound

const int N = 3e3 + 5;
const int inf = 1e9 + 1;
const int mod = 1e9 + 7;
const double eps = 1e-15;
const int pw = 257;

int n, m, dp[N][N][2], ans;
string s[N];

bool check(int i, int j, bool o) {
	if (!o)
		return (i + 2 <= n && s[i][j] == 'R' && s[i + 1][j] == 'G' && s[i + 2][j] == 'W');
	else
		return (j + 2 <= m && s[i][j] == 'R' && s[i][j + 1] == 'G' && s[i][j + 2] == 'W');
}

int main() {
	#ifdef Madi      
	freopen(".in", "r", stdin);
	freopen(".out", "w", stdout);
	#endif
	IOS                

	cin >> n >> m;
	rep(i, 1, n) {
		cin >> s[i];
		s[i] = '$' + s[i];
	}

	per(i, n, 1) {
		rep(j, 1, m) {
			dp[i][j][0] = max(dp[i][j][0], dp[i + 1][j - 1][0] + check(i, j, 0));
			dp[i][j][1] = max(dp[i][j][1], max(dp[i + 1][j - 1][0], dp[i + 1][j - 1][1]) + check(i, j, 1));
			if (i == 1 || j == m)
				ans += max(dp[i][j][0], dp[i][j][1]);
			//cout << i << ' ' << j << ' ' << dp[i][j][0] << ' ' << dp[i][j][1] << "\n";
		}
	}

	cout << ans;
	return 0;
}

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