oj.uz

Submission #577944

# Submission time Handle Problem Language Result Execution time Memory
577944 2022-06-15T13:56:38 Z Sam_a17 Nautilus (BOI19_nautilus) C++14
100 / 100
 89 ms 684 KB 
#define _CRT_SECURE_NO_WARNINGS
#include <bits/stdc++.h>
//#include "temp.cpp"
#include <cstdio>
using namespace std;

#pragma GCC optimize("Ofast")

#ifndef ONLINE_JUDGE
#define dbg(x) cerr << #x <<" "; print(x); cerr << endl;
#else
#define dbg(x)
#endif

#define sz(x) (int((x).size()))
#define len(x) (int)x.length()
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define clr(x) (x).clear()
#define uniq(x) x.resize(unique(all(x)) - x.begin());

#define pb push_back
#define popf pop_front
#define popb pop_back

void print(long long t) {cerr << t;}
void print(int t) {cerr << t;}
void print(string t) {cerr << t;}
void print(char t) {cerr << t;}
void print(double t) {cerr << t;}
void print(long double t) {cerr << t;}
void print(unsigned long long t) {cerr << t;}

template <class T> void print(set <T> v);
template <class T> void print(vector <T> v);
template <class T> void print(multiset <T> v);
template <class T, class V> void print(map <T, V> v);
template <class T, class V> void print(pair <T, V> p);
template <class T, class V> void print(T v[],V n) {cerr << "["; for(int i = 0; i < n; i++) {print(v[i]); cerr << " "; } cerr << "]";}
template <class T, class V> void print(pair <T, V> p) {cerr << "{"; print(p.first); cerr << ","; print(p.second); cerr << "}";}
template <class T> void print(vector <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(set <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T> void print(multiset <T> v) {cerr << "[ "; for (T i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void print(map <T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]";}
template <class T, class V> void print(unordered_map<T, V> v) {cerr << "[ "; for (auto i : v) {print(i); cerr << " ";} cerr << "]";}

#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
#define nl '\n'

// for grid problems
int dx[8] = {-1,0,1,0,1,-1,1,-1};
int dy[8] = {0,1,0,-1,1,1,-1,-1};

// lowest / (1 << 17) >= 1e5 / (1 << 18) >= 2e5 / (1 << 21) >= 1e6
void fastIO() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr); cout.tie(nullptr);
}
// file in/out
void setIO(string str = "") {
  fastIO();

  if (str != "" && str != "input") {
    freopen((str + ".in").c_str(), "r", stdin);
    freopen((str + ".out").c_str(), "w", stdout);
  }

  if(str == "input") {
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
  }
}
// Indexed Set
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
const int N = 5e2 + 10, M = 5e3 + 10;
int n, m, k;
char A[N][N];
bitset<N> dp[2][N];
bitset<N> b[N];

void solve_() {
  cin >> n >> m >> k;
  for(int i = 1; i <= n; i++) {
    for(int j = 1; j <= m; j++) {
      cin >> A[i][j];
      if(A[i][j] != '#') {
        dp[0][i][j] = true;
        b[i][j] = true;
      }
    }
  }

  string signal; cin >> signal;

  int answ = 0;
  for(int i = 1; i <= k; i++) {
    int curr = i & 1, lst = curr ^ 1; 

    if(signal[i - 1] == 'W') {
      for(int j = 1; j <= n; j++) {
        dp[curr][j] = b[j] & (dp[lst][j] >> 1);
      }
    } else if(signal[i - 1] == 'E') {
       for(int j = 1; j <= n; j++) {
        dp[curr][j] = b[j] & (dp[lst][j] << 1);
      }
    } else if(signal[i - 1] == 'S') {
      for(int j = 1; j <= n; j++) {
        dp[curr][j] = b[j] & (dp[lst][j - 1]);
      }
    }  else if(signal[i - 1] == 'N') {
      for(int j = 1; j <= n; j++) {
        dp[curr][j] = b[j] & (dp[lst][j + 1]);
      }
    }  else if(signal[i - 1] == '?') {
      for(int j = 1; j <= n; j++) {
        dp[curr][j] = b[j] & (dp[lst][j] << 1);
      }
      for(int j = 1; j <= n; j++) {
        dp[curr][j] |= b[j] & (dp[lst][j] >> 1);
      }
      for(int j = 1; j <= n; j++) {
        dp[curr][j] |= b[j] & (dp[lst][j - 1]);
      }
      for(int j = 1; j <= n; j++) {
        dp[curr][j] |= b[j] & (dp[lst][j + 1]);
      }
    } 
  }

  for(int i = 1; i <= n; i++) {
    for(int j = 1; j <= m; j++) {
      if(dp[k & 1][i][j]) {
        answ++;
      }
    }
  }

  printf("%d\n", answ);
}

int main() {
  setIO();

  auto solve = [&](int test_case)-> void {
    while(test_case--) {
      solve_();
    }
  };

  int test_cases = 1;
  solve(test_cases);

  return 0;
}

Compilation message

nautilus.cpp: In function 'void setIO(std::string)':
nautilus.cpp:65:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   65 |     freopen((str + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nautilus.cpp:66:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   66 |     freopen((str + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nautilus.cpp:70:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   70 |     freopen("input.txt", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
nautilus.cpp:71:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   71 |     freopen("output.txt", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

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 340 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 340 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 340 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 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 392 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 340 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 392 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 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 340 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 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 392 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 340 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 392 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 39 ms 668 KB Output is correct
23 Correct 39 ms 672 KB Output is correct
24 Correct 35 ms 596 KB Output is correct
25 Correct 42 ms 596 KB Output is correct
26 Correct 36 ms 644 KB Output is correct
27 Correct 55 ms 596 KB Output is correct
28 Correct 58 ms 596 KB Output is correct
29 Correct 64 ms 680 KB Output is correct
30 Correct 64 ms 664 KB Output is correct
31 Correct 55 ms 596 KB Output is correct
32 Correct 73 ms 668 KB Output is correct
33 Correct 75 ms 596 KB Output is correct
34 Correct 75 ms 684 KB Output is correct
35 Correct 79 ms 668 KB Output is correct
36 Correct 89 ms 596 KB Output is correct