22.09.03

BAEKJOON/15686_치킨_배달.py

@@ -0,0 +1,24 @@
+from itertools import combinations
+import sys
+def input(): return sys.stdin.readline().strip()
+
+N, M = map(int, input().split())
+data = [input().split() for _ in range(N)]
+homes, chickens = [], []
+for i in range(N):
+    for j in range(N):
+        if data[i][j] == '1':
+            homes.append((j, i))
+        elif data[i][j] == '2':
+            chickens.append((j, i))
+
+answer = float('inf')
+for arr in combinations(chickens, M):
+    length = 0
+    for hx, hy in homes:
+        l = float('inf')
+        for cx, cy in arr:
+            l = min(l, abs(cx - hx) + abs(cy - hy))
+        length = length + l
+    answer = min(answer, length)
+print(answer)

BAEKJOON/1707_이분_그래프.py

@@ -0,0 +1,43 @@
+from collections import deque
+import sys
+def input(): return sys.stdin.readline().strip()
+
+K = int(input())
+for _ in range(K):
+    V, E = map(int, input().split())
+
+    edges = [[] for _ in range(V + 1)]
+    for _ in range(E):
+        u, v = map(int, input().split())
+        edges[u].append(v)
+        edges[v].append(u)
+
+    check = [0] * (V + 1)
+    answer = False
+    for i in range(1, V + 1):
+        if check[i]:
+            continue
+
+        check[i] = 1
+        queue = deque([i])
+        while queue:
+            here = queue.popleft()
+
+            for there in edges[here]:
+                if check[there] == check[here]:
+                    answer = True
+                    break
+
+                if check[there]:
+                    continue
+
+                check[there] = 3 - check[here]
+                queue.append(there)
+
+            if answer:
+                break
+
+        if answer:
+            break
+
+    print("NO" if answer else "YES")