제출 #540877

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
540877		Olympia	Nautilus (BOI19_nautilus)	C++17	100 / 100	248 ms	1040 KiB

nautilus

#include <cmath>
#include <iostream>
#include <set>
#include <climits>
#include <cstdio>
#include <algorithm>
#include <cassert>
#include <string>
#include <vector>
#include <iomanip>
#include <unordered_map>
#include <type_traits>
#include <bit>
#include <bitset>
#include <string>
#include <queue>

#define ll long long

#include <map>

using namespace std;
vector<string> vec;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int R, C, M;
    cin >> R >> C >> M;
    vec.resize(R);
    for (int i = 0; i < R; i++) {
        cin >> vec[i];
        assert(vec[i].size() == C);
    }
    string s;
    cin >> s;
    vector<bitset<1000>> orig(R);
    for (int i = 0; i < R; i++) {
        for (int j = 0; j < C; j++) {
            if (vec[i][j] == '.') {
                orig[i].set(j + 500);
            }
        }
    }
    vector<bitset<1000>> pos = orig;
    map<char, pair<int, int>> myMap;
    myMap['W'] = {0, -1};
    myMap['E'] = {0, 1};
    myMap['S'] = {1, 0};
    myMap['N'] = {-1, 0};
    for (int i = 0; i < s.length(); i++) {
        vector<bitset<1000>> dum(R);
        if (s[i] == '?' || s[i] == 'W') {
            for (int j = 0; j < R; j++) {
                dum[j] |= (pos[j] >> 1);
            }
        }
        if (s[i] == '?' || s[i] == 'E') {
            for (int j = 0; j < R; j++) {
                dum[j] |= (pos[j] << 1);
            }
        }
        if (s[i] == '?' || s[i] == 'N') {
            for (int j = 0; j < R - 1; j++) {
                dum[j] |= pos[j + 1];
            }
        }
        if (s[i] == '?' || s[i] == 'S') {
            for (int j = 1; j < R; j++) {
                dum[j] |= pos[j - 1];
            }
        }
        for (int j = 0; j < R; j++) {
            pos[j] = dum[j] & orig[j];
        }
    }
    int ans = 0;
    for (int i = 0; i < R; i++) {
        ans += pos[i].count();
    }
    cout << ans;
}

컴파일 시 표준 에러 (stderr) 메시지

In file included from /usr/include/c++/10/cassert:44,
                 from nautilus.cpp:7:
nautilus.cpp: In function 'int main()':
nautilus.cpp:33:30: warning: comparison of integer expressions of different signedness: 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   33 |         assert(vec[i].size() == C);
      |                ~~~~~~~~~~~~~~^~~~
nautilus.cpp:51:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   51 |     for (int i = 0; i < s.length(); i++) {
      |                     ~~^~~~~~~~~~~~

• Subtask 1: 29 / 29
• Subtask 2: 37 / 37
• Subtask 3: 34 / 34