oj.uz

Submission #625234

# Submission time Handle Problem Language Result Execution time Memory
625234 2022-08-09T16:39:22 Z Do_you_copy Nautilus (BOI19_nautilus) C++17
100 / 100
 180 ms 984 KB 
#include <bits/stdc++.h>
//#define int long long
#define fi first
#define se second
#define pb push_back
#define faster ios_base::sync_with_stdio(0); cin.tie(0);
using namespace std;
using ll = long long;
using ull = unsigned ll;
using ld = long double;
using pii = pair <int, int>;
using pil = pair <int, ll>;
using pli = pair <ll, int>;
using pll = pair <ll, ll>;
mt19937 Rand(chrono::steady_clock::now().time_since_epoch().count());

ll min(const ll &a, const ll &b){
    return (a < b) ? a : b;
}

ll max(const ll &a, const ll &b){
    return (a > b) ? a : b;
}

//const ll Mod = 1000000007;
//const ll Mod2 = 999999999989;
//only use when required
const int maxN = 501 + 1;
int r, c, m;
string s[maxN];
string t;
bitset <500> a[maxN];
bitset <500> dp[501][2];
void Init(){
    cin >> r >> c >> m;
    for (int i = 0; i < r; ++i){
        cin >> s[i];
        for (int j = 0; j < c; ++j){
            a[i][j] = s[i][j] == '.';
            dp[i][0] = a[i];
        }
    }
    cin >> t;
    for (int k = 1; k <= m; ++k){
        for (int i = 0; i < r; ++i){
            int j = k % 2;
            dp[i][j] = 0;
            if ((t[k - 1] == 'S' || t[k - 1] == '?') && i > 0) dp[i][j] |= dp[i - 1][j ^ 1] & a[i];
            if (t[k - 1] == 'W' || t[k - 1] == '?') dp[i][j] |= (dp[i][j ^ 1] >> 1) & a[i];
            if (t[k - 1] == 'E' || t[k - 1] == '?') dp[i][j] |= (dp[i][j ^ 1] << 1) & a[i];
            if ((t[k - 1] == 'N' || t[k - 1] == '?') && i < r - 1) dp[i][j] |= dp[i + 1][j ^ 1] & a[i];
        }
    }
    int ans = 0;
    for (int i = 0; i < r; ++i){
        ans += dp[i][m % 2].count();
    }
    cout << ans << "\n";
}

#define debu
#define taskname "test"
signed main(){
    if (fopen(taskname".inp", "r")){
        freopen(taskname".inp", "r", stdin);
        #ifdef debug
        freopen(taskname".out", "w", stdout);
        #endif
    }
    faster;
    ll tt = 1;
    //cin >> tt;
    while (tt--){
        Init();
    }
    if (fopen("timeout.txt", "r")){
        ofstream timeout("timeout.txt");
        timeout << 1000 * double(clock()) / CLOCKS_PER_SEC;
        #ifndef debug
        cerr << "\nTime elapsed: " << 1000 * double(clock()) / CLOCKS_PER_SEC << "ms\n";
        #endif
    }
}

Compilation message

nautilus.cpp: In function 'int main()':
nautilus.cpp:65:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |         freopen(taskname".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 360 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 360 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 360 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 360 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 1 ms 360 KB Output is correct
20 Correct 3 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 360 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 360 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 360 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 2 ms 340 KB Output is correct
19 Correct 1 ms 360 KB Output is correct
20 Correct 3 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 109 ms 972 KB Output is correct
23 Correct 114 ms 936 KB Output is correct
24 Correct 136 ms 940 KB Output is correct
25 Correct 108 ms 940 KB Output is correct
26 Correct 107 ms 860 KB Output is correct
27 Correct 144 ms 860 KB Output is correct
28 Correct 151 ms 952 KB Output is correct
29 Correct 155 ms 944 KB Output is correct
30 Correct 152 ms 984 KB Output is correct
31 Correct 149 ms 932 KB Output is correct
32 Correct 173 ms 940 KB Output is correct
33 Correct 176 ms 944 KB Output is correct
34 Correct 172 ms 944 KB Output is correct
35 Correct 171 ms 940 KB Output is correct
36 Correct 180 ms 880 KB Output is correct