Submission #531665

#TimeUsernameProblemLanguageResultExecution timeMemory
531665zxcvbnmDango Maker (JOI18_dango_maker)C++14
13 / 100
1 ms844 KiB
#include <bits/stdc++.h> using namespace std; using ll = long long; constexpr int nax = 105; char mat[nax][nax]; const string str = "RGW"; /* 0 - desine 1 - virsus */ bool gali[nax][nax][2]; vector<array<int, 3>> adj[nax][nax][2]; bool vis[nax][nax][2]; int n, m; bool check_ok(int i, int j, int p) { if (i < 0 || j < 0 || i >= n || j >= m) return false; string curr; if (p == 0) { for(int k = 0; k < 3; k++) { curr += mat[i][j+k]; } } else { for(int k = 0; k < 3; k++) { curr += mat[i+k][j]; } } return (curr == str); } int sz = 0; void dfs(int x, int y, int k) { sz++; vis[x][y][k] = true; for(const auto& u : adj[x][y][k]) { if (vis[u[0]][u[1]][u[2]]) continue; dfs(u[0], u[1], u[2]); } } int main() { ios_base::sync_with_stdio(false); cin.tie(nullptr); cin >> n >> m; for(int i = 0; i < n; i++) { for(int j = 0; j < m; j++) { cin >> mat[i][j]; } } for(int i = 0; i < n; i++) { for(int j = 0; j < m; j++) { if (mat[i][j] == 'G') { if (j-1 >= 0) { gali[i][j][0] = check_ok(i, j-1, 0); } if (i-1 >= 0) { gali[i][j][1] = check_ok(i-1, j, 1); } } } } for(int i = 0; i < n; i++) { for(int j = 0; j < m; j++) { if (mat[i][j] != 'G') continue; for(int k = 0; k < 2; k++) { if (i-1 >= 0 && j+1 < m && gali[i-1][j+1][k^1]) { adj[i][j][k].push_back({i-1, j+1, k^1}); } if (i+1 < n && j-1 >= 0 && gali[i+1][j-1][k^1]) { adj[i][j][k].push_back({i+1, j-1, k^1}); } } } } int ans = 0; for(int i = 0; i < n; i++) { for(int j = 0; j < m; j++) { for(int k = 0; k < 2; k++) { if (gali[i][j][k] == false || vis[i][j][k]) continue; sz = 0; dfs(i, j, k); ans += (sz+1) / 2; } } } cout << ans << "\n"; return 0; }
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