2022_15_정환훈

2022_15_정환훈

2022/16주차/정환훈/1766_문제집.cpp

@@ -0,0 +1,50 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int n; int m;
+int in[32001];
+vector<int> adj[32001];
+void input() {
+	cin >> n >> m;
+	for (int i = 0; i < m; i++) {
+		int a; int b;
+		cin >> a >> b;
+		adj[a].push_back(b);
+		in[b]++;
+	}
+}
+
+
+void solve() {
+	priority_queue<int, vector<int>, greater<int>> q;
+	for (int i = 1; i <= n; i++) {
+		if (in[i] == 0) {
+			q.push(i);
+		}
+	}
+
+	while (!q.empty()) {
+		int cur = q.top();
+		q.pop();
+		cout << cur << " ";
+		for (int i = 0; i < adj[cur].size(); i++) {
+			in[adj[cur][i]]--;
+			if (in[adj[cur][i]] == 0)
+				q.push(adj[cur][i]);
+		}
+	}
+
+
+}
+
+
+int main(void) {
+	ios_base::sync_with_stdio(0);
+	cin.tie(0);
+	cout.tie(0);
+
+	input();
+	solve();
+
+	return 0;
+}

2022/16주차/정환훈/1992_쿼드트리.cpp

@@ -0,0 +1,68 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+int n;
+char board[64][64];
+
+void input() {
+	cin >> n;
+	for (int i = 0; i < n; i++) {
+		for (int j = 0; j < n; j++) {
+			cin >> board[i][j];
+		}
+	}
+}
+
+void check(int i, int j, int depth) {
+
+	if (depth == 0) {
+		cout << board[i][j];
+		return;
+	}
+
+	int size = pow(2, depth);
+	bool cut = false;
+	for (int a = i; a < i + size; a++) {
+		for (int b = j; b < j + size; b++) {
+			if (a >= n || b >= n || board[i][j] != board[a][b]) {
+				cut = true;
+				break;
+			}
+		}
+		if (cut) break;
+	}
+
+	if (cut) {
+		cout << "(";
+		check(i, j, depth - 1);
+		check(i, j + size/2, depth - 1);
+		check(i + size/2, j, depth - 1);
+		check(i + size/2, j + size/2, depth - 1);
+		cout << ")";
+	}
+	else
+		cout << board[i][j];
+}
+
+
+void solve() {
+	int sq = 0; int temp = n;
+	while (temp) {
+		temp = temp / 2;
+		sq++;
+	}
+	sq--;
+	check(0, 0, sq);
+}
+
+
+int main(void) {
+	ios_base::sync_with_stdio(0);
+	cin.tie(0);
+	cout.tie(0);
+
+	input();
+	solve();
+
+	return 0;
+}

2022/16주차/정환훈/2230_수 고르기.cpp

@@ -0,0 +1,46 @@
+#include <iostream>
+#include <vector>
+#include <algorithm>
+using namespace std;
+
+int n; int m; vector<int> a;
+
+void input() {
+	cin >> n >> m;
+	for (int i = 0; i < n; i++) {
+		int temp;
+		cin >> temp;
+		a.push_back(temp);
+	}
+}
+
+void solve() {
+	sort(a.begin(), a.end());
+	int l = 0; int r = 0;
+	int ans = 2000000001;
+	while (l < n && r < n) {
+		if (a[r] - a[l] == m) {
+			cout << m;
+			return;
+		}
+		if (a[r] - a[l] < m) {
+			r++;
+		}
+		else {
+			ans = min(ans, a[r] - a[l]);
+			l++;
+		}
+
+	}
+	cout << ans;
+}
+
+int main() {
+	ios_base::sync_with_stdio(0);
+	cin.tie(0);
+	cout.tie(0);
+	input();
+	solve();
+
+	return 0;
+}

2022/16주차/정환훈/5547_일루미네이션.cpp

@@ -0,0 +1,95 @@
+#include <bits/stdc++.h>
+using namespace std;
+
+// (-1,-1) (0,-1) (1,0) (0,1) (-1,1) (-1,0)
+// (0,-1) (1,-1) (1,0) (1,1) (0,1) (-1,0)
+
+pair<int, int> even[6] = { {-1,-1}, {0,-1}, {1,0}, {0,1}, {-1,1}, {-1,0} };
+pair<int, int> odd[6] = { {0,-1}, {1,-1}, {1,0}, {1,1}, {0,1}, {-1,0} };
+
+int w; int h;
+int ans = 0;
+int board[102][102];
+bool v[102][102];
+void input() {
+	cin >> w >> h;
+	for (int i = 0; i < 101; i++) {
+		for (int j = 0; j < 101; j++) {
+			board[i][j] = -1;
+		}
+	}
+	for (int i = 1; i <= h; i++) {
+		for (int j = 1; j <= w; j++) {
+			cin >> board[j][i];
+		}
+	}
+
+}
+
+void bfs(int i, int j) { // 0,0부터 시작해서 만질 수 있는 벽들 개수 세기
+	v[i][j] = true;
+	queue<pair<int, int>> q;
+	int walls = 0;
+	q.push({ i,j });
+	while (!q.empty()) {
+		pair<int, int> now = q.front();
+		int x = now.first;
+		int y = now.second;
+		q.pop();
+		if (y % 2 == 0) {
+			for (int k = 0; k < 6; k++) {
+				int ny = y + even[k].second;
+				int nx = x + even[k].first;
+				if (nx >= 0 && nx <= w + 1 && ny >= 0 && ny <= h + 1) {
+					if (board[nx][ny] == -1 && !v[nx][ny]) {
+						v[nx][ny] = true;
+						q.push({ nx,ny });
+					}
+					if (board[nx][ny] == 1)
+						walls++;
+					if (board[nx][ny] == 0 && !v[nx][ny]) {
+						v[nx][ny] = true;
+						q.push({ nx,ny });
+					}
+				}
+			}
+		}
+		else {
+			for (int k = 0; k < 6; k++) {
+				int ny = y + odd[k].second;
+				int nx = x + odd[k].first;
+				if (nx >= 0 && nx <= w + 1 && ny >= 0 && ny <= h + 1) {
+					if (board[nx][ny] == -1 && !v[nx][ny]) {
+						v[nx][ny] = true;
+						q.push({ nx,ny });
+					}
+					if (board[nx][ny] == 1)
+						walls++;
+					if (board[nx][ny] == 0 && !v[nx][ny]) {
+						v[nx][ny] = true;
+						q.push({ nx,ny });
+					}
+				}
+			}
+		}
+	}
+	ans += walls;
+
+}
+
+void solve() {
+	bfs(0, 0);
+	cout << ans;
+}
+
+
+int main(void) {
+	ios_base::sync_with_stdio(0);
+	cin.tie(0);
+	cout.tie(0);
+
+	input();
+	solve();
+
+	return 0;
+}