제출 #621460

#제출 시각아이디문제언어결과실행 시간메모리
621460elkernosDango Maker (JOI18_dango_maker)C++17
0 / 100
0 ms212 KiB
#include <bits/stdc++.h> using namespace std; int32_t main() { cin.tie(0)->sync_with_stdio(0); int n, m; cin >> n >> m; vector g(n + 1, vector<char>(m + 1)); for(int i = 1; i <= n; i++) { for(int j = 1; j <= m; j++) { cin >> g[i][j]; } } int ans = 0; for(int s = 2; s <= n + m; s++) { vector dp(n + 1, vector<int>(3)); int p = 0; for(int i = 1, j = s - i; i <= n; i++, j--) { if(!(1 <= j && j <= m)) { continue; } dp[i][0] = max({dp[i - 1][0], dp[i - 1][1], dp[i - 1][2]}); if(1 < i && i < n && g[i - 1][j] == 'R' && g[i + 1][j] == 'W') { dp[i][1] = max(dp[i - 1][0], dp[i - 1][1]) + 1; } if(1 < j && j < m && g[i][j - 1] == 'R' && g[i][j + 1] == 'W') { dp[i][2] = max(dp[i - 1][0], dp[i - 1][2]) + 1; } p = i; } ans += max({dp[p][0], dp[p][1], dp[p][2]}); } cout << ans << '\n'; }
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