Submission #741682

#	Time	Username	Problem	Language	Result	Execution time	Memory
741682		Alma	Patkice (COCI20_patkice)	C++17	50 / 50	1 ms	552 KiB

patkice

#include <iostream>
#include <vector>
#include <algorithm>
#include <map>
using namespace std;

int main() {
	ios::sync_with_stdio(false);
	cin.tie(NULL);

	int r, c;
	cin >> r >> c;
	vector<vector<char>> m(r, vector<char>(c));

	string s;
	int x0 = 0, y0 = 0;
	for (int i = 0; i < r; i++) {
		cin >> s;
		for (int j = 0; j < c; j++) {
			m[i][j] = s[j];
			if (s[j] == 'o') {
				x0 = i;
				y0 = j;
			}
		}
	}

	map<char, pair<int, int>> dir;
	dir['>'] = {0, 1};
	dir['<'] = {0, -1};
	dir['v'] = {1, 0};
	dir['^'] = {-1, 0};

	// Order: E, N, S, W
	vector<pair<int, int>> st;
	st.push_back({0, 1});
	st.push_back({-1, 0});
	st.push_back({1, 0});
	st.push_back({0, -1});

	int x, y, cnt, idx = -1, mn = 1e9;

	for (int i = 0; i < 4; i++) {
		x = x0 + st[i].first;
		y = y0 + st[i].second;
		cnt = 0;

		while (true) {
			if (m[x][y] == '.' || m[x][y] == 'o') {
				break;
			} else if (m[x][y] == 'x') {
				if (cnt < mn) {
					mn = cnt;
					idx = i;
				}
				break;
			}
			char d = m[x][y];
			x += dir[d].first;
			y += dir[d].second;
			cnt++;
		}
	}

	vector<char> let = {'E', 'N', 'S', 'W'};

	if (idx != -1) {
		cout << ":)\n";
		cout << let[idx] << '\n';
	} else {
		cout << ":(\n";
	}

	return 0;
}

• Subtask 1: 30 / 30
• Subtask 2: 20 / 20