Merge pull request #590 from gmlrude/main

[박희경] 82차 라이브 코테 제출

Author: github-actions[bot]

live8/test82/문제1/박희경.py

@@ -0,0 +1,52 @@
+import sys
+from collections import *
+
+input = sys.stdin.readline
+
+n, m = map(int,input().split())
+
+picture = []
+for _ in range(n):
+    picture.append(list(map(int,input().split())))
+
+
+dx = [-1, 1, 0, 0]
+dy = [0, 0, -1, 1]
+visited = [[0] * m for _ in range(n)]
+
+
+def bfs(x, y):
+    q = deque([(x, y)])
+    size = 1
+    visited[x][y] = 1
+    while q:
+        x, y = q.popleft()
+        for i in range(4):
+            nx, ny = x + dx[i], y + dy[i]
+            if 0 <= nx < n and 0 <= ny < m and not visited[nx][ny]:
+                if picture[nx][ny] == 1:
+                    size += 1
+                    visited[nx][ny] = 1
+                    q.append((nx, ny))
+    return size
+
+
+cnt = 0
+max_extent = 0
+for i in range(n):
+    for j in range(m):
+        if picture[i][j] == 1 and not visited[i][j]:
+            max_extent = max(bfs(i, j), max_extent)
+            cnt += 1
+print(cnt)
+print(max_extent)
+
+"""
+6 5
+1 1 0 1 1
+0 1 1 0 0
+0 0 0 0 0
+1 0 1 1 1
+0 0 1 1 1
+0 0 1 1 1
+"""

live8/test82/문제2/박희경.py

@@ -0,0 +1,44 @@
+import sys
+from collections import *
+
+input = sys.stdin.readline
+
+n, m = map(int, input().split())
+r = [[] for _ in range(n + 1)]
+for _ in range(m):
+    a, b = map(int, input().split())
+    r[a].append(b)
+    r[b].append(a)
+
+
+def bfs(x, target, depth):
+    visited = [0] * (n + 1)
+    q = deque([(x, depth)])
+    visited[x] = 1
+    while q:
+        x, depth = q.popleft()
+        if x == target:
+            return depth
+        for nx in r[x]:
+            if not visited[nx]:
+                visited[nx] = 1
+                q.append((nx, depth + 1))
+
+
+kb = [float("inf")] + []
+for i in range(1, n + 1):
+    i_kb = 0
+    for j in range(1, n + 1):
+        if i != j:
+            i_kb += bfs(i, j, 0)
+    kb.append(i_kb)
+print(kb.index(min(kb)))
+
+"""
+5 5
+1 3
+1 4
+4 5
+4 3
+3 2
+"""