oj.uz

Submission #553619

# Submission time Handle Problem Language Result Execution time Memory
553619 2022-04-26T11:51:35 Z Awerar Nautilus (BOI19_nautilus) C++14
100 / 100
 215 ms 704 KB 
#include <iostream>
#include <vector>
#include <string>
#include <map>
#include <unordered_map>
#include <set>
#include <unordered_set>
#include <limits.h>
#include <math.h>
#include <chrono>
#include <queue>
#include <stack>
#include <bitset>
#include <algorithm>

using namespace std;

#pragma GCC target ("avx2")
#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")

#define ll long long
#define vi vector<ll>
#define vvi vector<vi>
#define p2 pair<ll, ll>
#define p3 tuple<ll,ll,ll>
#define p4 vi
#define ip3 tuple<int,int,int>
#define ip4 tuple<int,int,int,int>
#define vp2 vector<p2>
#define vp3 vector<p3>
#define inf 2e9
#define linf 1e17

#define read(a) cin >> a
#define write(a) cout << (a) << "\n"
#define dread(type, a) type a; cin >> a
#define dread2(type, a, b) dread(type, a); dread(type, b)
#define dread3(type, a, b, c) dread2(type, a, b); dread(type, c)
#define dread4(type, a, b, c, d) dread3(type, a, b, c); dread(type, d)
#define dread5(type, a, b, c, d, e) dread4(type, a, b, c, d); dread(type, e)
#ifdef _DEBUG
#define deb __debugbreak();
#else
#define deb ;
#endif

#define rep(i, high) for (ll i = 0; i < high; i++)
#define repp(i, low, high) for (ll i = low; i < high; i++)
#define repe(i, container) for (auto& i : container)
#define per(i, high) for (ll i = high; i >= 0; i--)

#define readpush(type,vect) type temp; read(temp); vect.push_back(temp);
#define readvector(type, name, size) vector<type> name(size); rep(i,size) {dread(type,temp); name[i]=temp;}
#define readinsert(type,a) {type temp; read(temp); a.insert(temp);}
#define all(a) begin(a),end(a)
#define setcontains(set, x) (set.find(x) != set.end())
#define stringcontains(str, x) (str.find(x) != string::npos)
#define within(a, b, c, d) (a >= 0 && a < b && c >= 0 && c < d)

#define ceildiv(x,y) ((x + y - 1) / y)
#define fract(a) (a-floor(a))
#define sign(a) ((a>0) ? 1 : -1)

#define MW 500

auto Start = chrono::high_resolution_clock::now();

inline void fast()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL); cout.tie(NULL);
}

ll w, h, m;
vector<vector<bool>> grid;
string instructions;

int main() {
    //fast();

    cin >> h >> w >> m;
    grid.resize(w, vector<bool>(h));

    for(int y = 0; y < h; y++) {
        for(int x = 0; x < w; x++) {
            char c;
            cin >> c;

            grid[x][y] = c == '#';
        }
    }

    cin >> instructions;
    vector<bitset<MW>> dp_state(h, bitset<500>()), free_pos(h, bitset<500>());

    for(int y = 0; y < h; y++) {
        for(int x = 0; x < w; x++) {
            if(!grid[x][y]) free_pos[y].set(x, true);
        }

        dp_state[y] = free_pos[y];
    }

    for(auto iter = instructions.begin(); iter != instructions.end(); iter++) {
        string dirs;
        dirs += *iter;

        if(dirs == "?") {
            dirs = "ENWS";
        }

        vector<bitset<MW>> next_state(h, bitset<MW>());

        for(char c : dirs) {
            for(int y = 0; y < h; y++) {
                switch (c)
                {
                case 'W':
                    next_state[y] |= (dp_state[y] >> 1);
                    break;

                case 'E':
                    next_state[y] |= (dp_state[y] << 1);
                    break;

                case 'N':
                    if(y + 1 < h) next_state[y] |= dp_state[y + 1];
                    break;

                case 'S':
                    if(y > 0) next_state[y] |= dp_state[y - 1];
                    break;
                }
            }
        }

        for(int y = 0; y < h; y++) {
            next_state[y] &= free_pos[y];
        }

        dp_state = next_state;

        /*cout << "Instruction " << (*iter) << endl;
        for(int y = 0; y < h; y++) {
            for(int x = 0; x < w; x++) {
                cout << (dp_state[y][x] ? "o" : (grid[x][y] ? "#" : "."));
            }
            cout << endl;
        }*/
    }

    int ans = 0;
    for(int y = 0; y < h; y++) {
        ans += dp_state[y].count();
    }

    write(ans);
}

/*
5 9 7
...##....
..#.##..#
..#....##
.##...#..
....#....
WS?EE??

*/

Compilation message

nautilus.cpp:19: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   19 | #pragma GCC optimization ("O3")
      | 
nautilus.cpp:20: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
   20 | #pragma GCC optimization ("unroll-loops")
      |

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 2 ms 212 KB Output is correct
3 Correct 2 ms 212 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 2 ms 308 KB Output is correct
6 Correct 2 ms 212 KB Output is correct

Subtask #2
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 2 ms 212 KB Output is correct
3 Correct 2 ms 212 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 2 ms 308 KB Output is correct
6 Correct 2 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 2 ms 312 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 2 ms 340 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 212 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 2 ms 212 KB Output is correct
18 Correct 2 ms 212 KB Output is correct
19 Correct 2 ms 312 KB Output is correct
20 Correct 2 ms 212 KB Output is correct
21 Correct 2 ms 212 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 2 ms 212 KB Output is correct
3 Correct 2 ms 212 KB Output is correct
4 Correct 2 ms 340 KB Output is correct
5 Correct 2 ms 308 KB Output is correct
6 Correct 2 ms 212 KB Output is correct
7 Correct 2 ms 212 KB Output is correct
8 Correct 2 ms 312 KB Output is correct
9 Correct 2 ms 212 KB Output is correct
10 Correct 2 ms 340 KB Output is correct
11 Correct 2 ms 340 KB Output is correct
12 Correct 2 ms 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 2 ms 212 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 2 ms 212 KB Output is correct
18 Correct 2 ms 212 KB Output is correct
19 Correct 2 ms 312 KB Output is correct
20 Correct 2 ms 212 KB Output is correct
21 Correct 2 ms 212 KB Output is correct
22 Correct 116 ms 704 KB Output is correct
23 Correct 106 ms 696 KB Output is correct
24 Correct 105 ms 692 KB Output is correct
25 Correct 100 ms 704 KB Output is correct
26 Correct 128 ms 696 KB Output is correct
27 Correct 141 ms 596 KB Output is correct
28 Correct 142 ms 696 KB Output is correct
29 Correct 155 ms 692 KB Output is correct
30 Correct 150 ms 696 KB Output is correct
31 Correct 137 ms 700 KB Output is correct
32 Correct 171 ms 696 KB Output is correct
33 Correct 206 ms 696 KB Output is correct
34 Correct 171 ms 596 KB Output is correct
35 Correct 173 ms 692 KB Output is correct
36 Correct 215 ms 608 KB Output is correct