oj.uz

Submission #919932

# Submission time Handle Problem Language Result Execution time Memory
919932 2024-02-01T21:21:08 Z Alebn Nautilus (BOI19_nautilus) C++14
0 / 100
 13 ms 1400 KB 
#include <iostream>
#include <vector>
#include <map>

using namespace std;

int n, m, len;
string s;

bool check(int i, int j) {
    if(i > -1 && j > -1 && i < n && j < m) return true;
    return false;
}

int main() {
    cin >> n >> m >> len;
    vector<string> a(n);
    for(int i = 0; i < n; i++) cin >> a[i];
    cin >> s;
    //dp
    vector<vector<vector<bool>>> dp(len+1, vector<vector<bool>>(n, vector<bool>(m)));
    //base case
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < m; j++) dp[0][i][j] = (a[i][j] == '.');
    }
    //transition
    vector<pair<int,int>> dirs = {
        {-1, 0},
        {0, 1},
        {1, 0},
        {0, -1}
    };
    map<char,int> mp = {
        {'N', 0},
        {'E', 1},
        {'S', 2},
        {'W', 3}
    };
    pair<int,int> dir;
    for(int k = 1; k <= len; k++) {
        for(int i = 0; i < n; i++) {
            for(int j = 0; j < m; j++) {
                if(a[i][j] == '#') {
                    cout << "# ";
                    continue;
                }
                if(s[k-1] == '?') {
                    for(auto dir : dirs) {
                        if(check(i+dir.first, j+dir.second) && dp[k-1][i+dir.first][j+dir.second]) dp[k][i][j] = 1;
                    }
                }
                else {
                    dir = dirs[(mp[s[k-1]]+2)%4];
                    if(check(i+dir.first, j+dir.second) && dp[k-1][i+dir.first][j+dir.second]) dp[k][i][j] = 1;
                }
                //cout << dp[k][i][j] << " ";
            }
            //cout << "\n";
        }
        //cout << "\n";
    }
    //final state
    int res = 0;
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < m; j++) res += dp[len][i][j];
    }
    cout << res << "\n";
}

Subtask #1
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1112 KB Output is correct
2 Incorrect 13 ms 1400 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1112 KB Output is correct
2 Incorrect 13 ms 1400 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1112 KB Output is correct
2 Incorrect 13 ms 1400 KB Output isn't correct
3 Halted 0 ms 0 KB -