Submission #414695

#	Time	Username	Problem	Language	Result	Execution time	Memory
414695		tengiz05	Nautilus (BOI19_nautilus)	C++17	66 / 100	12 ms	4656 KiB

nautilus

#include <bits/stdc++.h>
using i64 = long long;
constexpr int N = 105, K = 105;
char g[N][N];
int dp[N][N][K];
int main() {
    std::ios::sync_with_stdio(false);
    std::cin.tie(nullptr);
    int n, m, k;
    std::cin >> n >> m >> k;
    memset(g, '#', sizeof g);
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            std::cin >> g[i][j];
        }
    }
    std::string s;
    std::cin >> s;
    int ans = 0;
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            dp[i][j][0] = (g[i][j] == '.');
        }
    }
    for (int K = 1; K <= k; K++) {
        for (int i = 1; i <= n; i++) {
            for (int j = 1; j <= m; j++) {
                if (g[i][j] == '#')
                    continue;
                int x = i, y = j;
                if (s[K - 1] == 'N') x++;
                else if (s[K - 1] == 'S') x--;
                else if (s[K - 1] == 'W') y++;
                else if (s[K - 1] == 'E') y--;
                else {
                    x--;
                    dp[i][j][K] |= dp[i - 1][j][K - 1];
                    dp[i][j][K] |= dp[i][j - 1][K - 1];
                    dp[i][j][K] |= dp[i + 1][j][K - 1];
                    dp[i][j][K] |= dp[i][j + 1][K - 1];
                }
                dp[i][j][K] |= dp[x][y][K - 1];
            }
        }
    }
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= m; j++) {
            ans += dp[i][j][k];
        }
    }
    std::cout << ans << "\n";
    return 0;
}

• Subtask 1: 29 / 29
• Subtask 2: 37 / 37
• Subtask 3: 0 / 34