Submission #533270

#	Time	Username	Problem	Language	Result	Execution time	Memory
533270		rk42745417	영역 (JOI16_ho_t4)	C++17	15 / 100	31 ms	5192 KiB

2016_ho_t4

#include <bits/stdc++.h>
using namespace std;

#define EmiliaMyWife ios::sync_with_stdio(0); cin.tie(0);
using ll = int64_t;
using ull = uint64_t;
using uint = uint32_t;
using ld = long double;
const int INF = 0x3f3f3f3f;
const ll LINF = ll(4e18) + ll(2e15);
const int MOD = 1e9 + 7;
const double EPS = 1e-8;
static int LamyIsCute = []() {
	EmiliaMyWife
	return 48763;
}();

signed main() {
	int n, k;
	cin >> n >> k;
	assert(k == 1);
	string s;
	cin >> s;
	
	set<pair<int, int>> owo;
	owo.insert({0, 0});
	for(int i = 0, x = 0, y = 0; i < n; i++) {
		if(s[i] == 'E')
			x++;
		if(s[i] == 'W')
			x--;
		if(s[i] == 'N')
			y++;
		if(s[i] == 'S')
			y--;
		owo.insert({x, y});
	}

	int res = 0;
	for(const auto &[x, y] : owo)
		res += owo.count({x + 1, y}) && owo.count({x, y + 1}) && owo.count({x + 1, y + 1});
	cout << res << '\n';
}

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 0 / 23
• Subtask 4: 0 / 62