oj.uz

Submission #554655

# Submission time Handle Problem Language Result Execution time Memory
554655 2022-04-29T04:19:07 Z ac2hu Nautilus (BOI19_nautilus) C++14
100 / 100
 137 ms 724 KB 
#include <bits/stdc++.h>
#ifdef DEBUG
#include "../templates/debug.h"
#else 
#define deb(x...)
#endif
using namespace std;
// We can do this using bitsets but we need some way to keep track of the #s
/* Case 1: N, S, E, W we shift the bitset (and) it with current mask
 * Case 2: ? or all 4 shifted masks and then (and) it with current mask
 */
const int N = 501;
using B = bitset<N>;
int r,c;
vector<B> ocean, msk;
vector<B> north(){
    vector<B> temp(r);
    for(int i = 0;i<r - 1;i++){
        temp[i] = ocean[i + 1]; 
    }
    return temp;
}
vector<B> south(){
    vector<B> temp(r);
    for(int i = 0;i<r - 1;i++){
        temp[i + 1] = ocean[i]; 
    }
    return temp;
}
vector<B> west(){
    vector<B> temp = ocean;
    for(int i = 0;i<r;i++){
        temp[i] = temp[i] << 1;
    }
    return temp;
}
vector<B> east(){
    vector<B> temp = ocean;
    for(int i = 0;i<r;i++){
        temp[i] = temp[i] >> 1;
    }
    return temp;
}
void ord(vector<B> &o, vector<B> so){
    for(int i = 0;i<r;i++){
        o[i] |= so[i];
    }
}
signed main(){
	iostream::sync_with_stdio(false);cin.tie(nullptr);
    int m;cin >> r >> c >> m;
    ocean.resize(r);
    for(int i = 0;i<r;i++){
    	string t;cin >> t;
        for(int j = 0;j<c;j++){
            if(t[j] == '.'){
                ocean[i][j] = 1;
            }
        }
    }
    msk = ocean;
    string s;cin >> s;
    for(int i = 0;i<s.size();i++){
        vector<B> so;
        if(s[i] == '?'){
            so = north();
            ord(so, south());
            ord(so, west());
            ord(so, east());
        }
        else{
            if(s[i] == 'N'){
                so = north(); 
            }
            else if(s[i] == 'S'){
                so = south(); 
            }
            else if(s[i] == 'E'){
                so = west();
            }
            else{
                so = east();
            }
        }
        ocean = so;
        for(int j = 0;j<r;j++)
        	ocean[j] &= msk[j];
    }
    int cc = 0;
    for(int i = 0;i<r;i++){
        for(int j = 0;j<c;j++){
            if(ocean[i][j] == 1)
                cc++;
        }
    }
    cout << cc << "\n";
}

Compilation message

nautilus.cpp: In function 'int main()':
nautilus.cpp:63:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   63 |     for(int i = 0;i<s.size();i++){
      |                   ~^~~~~~~~~

Subtask #1
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 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 212 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 328 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 2 ms 340 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 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 212 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 328 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 2 ms 340 KB Output is correct
12 Correct 1 ms 320 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 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 59 ms 704 KB Output is correct
23 Correct 64 ms 704 KB Output is correct
24 Correct 62 ms 716 KB Output is correct
25 Correct 63 ms 704 KB Output is correct
26 Correct 65 ms 716 KB Output is correct
27 Correct 98 ms 704 KB Output is correct
28 Correct 92 ms 596 KB Output is correct
29 Correct 111 ms 724 KB Output is correct
30 Correct 97 ms 704 KB Output is correct
31 Correct 93 ms 704 KB Output is correct
32 Correct 129 ms 596 KB Output is correct
33 Correct 137 ms 596 KB Output is correct
34 Correct 124 ms 596 KB Output is correct
35 Correct 115 ms 596 KB Output is correct
36 Correct 116 ms 704 KB Output is correct