oj.uz

Submission #339288

# Submission time Handle Problem Language Result Execution time Memory
339288 2020-12-25T03:20:44 Z 12tqian Nautilus (BOI19_nautilus) C++17
66 / 100
 1000 ms 7804 KB 
#pragma comment(linker, "/stack:200000000")
//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/rope>

using namespace std;
using namespace __gnu_pbds;
using namespace __gnu_cxx;
template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;

const double PI = 4 * atan(1);

#define sz(x) (int)(x).size()
#define ll long long
#define ld long double
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define pii pair <int, int>
#define vi vector<int>
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()
#define vpi vector<pair<int, int>>
#define vpd vector<pair<double, double>>
#define pd pair<double, double>

#define f0r(i,a) for(int i=0;i<a;i++)
#define f1r(i,a,b) for(int i=a;i<b;i++)
#define trav(a, x) for (auto& a : x)

template<typename A, typename B> ostream& operator<<(ostream &cout, pair<A, B> const &p) { return cout << "(" << p.f << ", " << p.s << ")"; }
template<typename A> ostream& operator<<(ostream &cout, vector<A> const &v) {
  cout << "["; for(int i = 0; i < v.size(); i++) {if (i) cout << ", "; cout << v[i];} return cout << "]";
}

void fast_io(){
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);
    cout.tie(NULL);
}
void io(string taskname){
    string fin = taskname + ".in";
    string fout = taskname + ".out";
    const char* FIN = fin.c_str();
    const char* FOUT = fout.c_str();
    freopen(FIN, "r", stdin);
   // freopen(FOUT, "w", stdout);
    fast_io();
}
const int MAX = 2505;
int grid[MAX][MAX];
int use[MAX][MAX];
int r, c, m;
inline int valid(int x, int y){
    if(0<= x && x<r &&0<= y && y<c && grid[x][y] == 0 && use[x][y] == 0) {
        use[x][y] = 1;
        return 1;
    }
    return 0;
}
///0 up 1 right 2 down 3 left
int dir[4][2] = {{-1, 0}, {0, 1}, {1, 0}, {0, -1}};
vi v;
int main(){
    fast_io();
    cin >> r >> c >> m;
    string temporary;
    getline(cin, temporary);
    f0r(i, r){
        string line;
        getline(cin, line);
        f0r(j, c){
            if(line[j] == '#') grid[i][j] = 1;
        }
    }
    string line;
    getline(cin, line);
    f0r(i, m){
        if(line[i] == 'N'){
            v.eb(0);
        }
        else if(line[i] == 'E'){
            v.eb(1);
        }
        else if (line[i] == 'S'){
            v.eb(2);
        }
        else if(line[i] == 'W'){
            v.eb(3);
        }
        else{
            v.eb(-1);
        }
    }
    vpi from;
    vpi to;
    f0r(i, r){
        f0r(j, c){
            if(grid[i][j] == 0) from.eb(mp(i, j));
        }
    }
    f0r(i, m){
        to.clear();
        for(auto x: from){
            if(v[i] != -1){
                pii nxt = x;
                nxt.f += dir[v[i]][0];
                nxt.s += dir[v[i]][1];
                if(valid(nxt.f, nxt.s)){
                    to.eb(nxt);
                }
            }
            else{
                f0r(d, 4){
                    pii nxt = x;
                    nxt.f += dir[d][0];
                    nxt.s += dir[d][1];
                    if(valid(nxt.f, nxt.s)){
                        to.eb(nxt);
                    }
                }
            }
        }
        for(auto x: to){
            use[x.f][x.s] = 0;
        }
        swap(to, from);
    }
    cout << sz(from) << endl;
    return 0;
}

Compilation message

nautilus.cpp:1: warning: ignoring #pragma comment  [-Wunknown-pragmas]
    1 | #pragma comment(linker, "/stack:200000000")
      | 
nautilus.cpp: In function 'void io(std::string)':
nautilus.cpp:53:17: warning: unused variable 'FOUT' [-Wunused-variable]
   53 |     const char* FOUT = fout.c_str();
      |                 ^~~~
nautilus.cpp:54:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   54 |     freopen(FIN, "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 1132 KB Output is correct
2 Correct 2 ms 1388 KB Output is correct
3 Correct 2 ms 1388 KB Output is correct
4 Correct 1 ms 1388 KB Output is correct
5 Correct 1 ms 1260 KB Output is correct
6 Correct 1 ms 876 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 1132 KB Output is correct
2 Correct 2 ms 1388 KB Output is correct
3 Correct 2 ms 1388 KB Output is correct
4 Correct 1 ms 1388 KB Output is correct
5 Correct 1 ms 1260 KB Output is correct
6 Correct 1 ms 876 KB Output is correct
7 Correct 13 ms 1132 KB Output is correct
8 Correct 7 ms 1516 KB Output is correct
9 Correct 2 ms 1260 KB Output is correct
10 Correct 2 ms 1260 KB Output is correct
11 Correct 1 ms 896 KB Output is correct
12 Correct 18 ms 1132 KB Output is correct
13 Correct 22 ms 1388 KB Output is correct
14 Correct 18 ms 1388 KB Output is correct
15 Correct 2 ms 1260 KB Output is correct
16 Correct 1 ms 876 KB Output is correct
17 Correct 19 ms 1132 KB Output is correct
18 Correct 26 ms 1388 KB Output is correct
19 Correct 14 ms 1260 KB Output is correct
20 Correct 5 ms 1260 KB Output is correct
21 Correct 1 ms 1004 KB Output is correct

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 1132 KB Output is correct
2 Correct 2 ms 1388 KB Output is correct
3 Correct 2 ms 1388 KB Output is correct
4 Correct 1 ms 1388 KB Output is correct
5 Correct 1 ms 1260 KB Output is correct
6 Correct 1 ms 876 KB Output is correct
7 Correct 13 ms 1132 KB Output is correct
8 Correct 7 ms 1516 KB Output is correct
9 Correct 2 ms 1260 KB Output is correct
10 Correct 2 ms 1260 KB Output is correct
11 Correct 1 ms 896 KB Output is correct
12 Correct 18 ms 1132 KB Output is correct
13 Correct 22 ms 1388 KB Output is correct
14 Correct 18 ms 1388 KB Output is correct
15 Correct 2 ms 1260 KB Output is correct
16 Correct 1 ms 876 KB Output is correct
17 Correct 19 ms 1132 KB Output is correct
18 Correct 26 ms 1388 KB Output is correct
19 Correct 14 ms 1260 KB Output is correct
20 Correct 5 ms 1260 KB Output is correct
21 Correct 1 ms 1004 KB Output is correct
22 Execution timed out 1096 ms 7804 KB Time limit exceeded
23 Halted 0 ms 0 KB -