結果
| 問題 |
No.1324 Approximate the Matrix
|
| コンテスト | |
| ユーザー |
lam6er
|
| 提出日時 | 2025-04-16 00:59:13 |
| 言語 | PyPy3 (7.3.15) |
| 結果 |
WA
|
| 実行時間 | - |
| コード長 | 1,639 bytes |
| コンパイル時間 | 158 ms |
| コンパイル使用メモリ | 82,224 KB |
| 実行使用メモリ | 84,868 KB |
| 最終ジャッジ日時 | 2025-04-16 01:00:29 |
| 合計ジャッジ時間 | 4,424 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 3 |
| other | AC * 9 WA * 33 |
ソースコード
import heapq
def main():
import sys
input = sys.stdin.read().split()
idx = 0
n = int(input[idx])
idx += 1
k = int(input[idx])
idx += 1
A = list(map(int, input[idx:idx+n]))
idx += n
B = list(map(int, input[idx:idx+n]))
idx += n
P = []
for _ in range(n):
row = list(map(int, input[idx:idx+n]))
P.append(row)
idx += n
sum_P_squared = sum(p*p for row in P for p in row)
remaining_row = A.copy()
remaining_col = B.copy()
x = [[0]*n for _ in range(n)]
heap = []
# Initialize the heap with possible edges
for i in range(n):
for j in range(n):
if remaining_row[i] > 0 and remaining_col[j] > 0:
mc = 1 - 2 * P[i][j]
heapq.heappush(heap, (mc, i, j))
sum_marginal = 0
for _ in range(k):
while True:
if not heap:
break # This should not happen as per problem statement
mc, i, j = heapq.heappop(heap)
if remaining_row[i] <= 0 or remaining_col[j] <= 0:
continue
# Assign this unit
x[i][j] += 1
sum_marginal += mc
remaining_row[i] -= 1
remaining_col[j] -= 1
# Push next marginal cost if possible
if remaining_row[i] > 0 and remaining_col[j] > 0:
next_mc = 2 * (x[i][j] + 1) - 1 - 2 * P[i][j]
heapq.heappush(heap, (next_mc, i, j))
break
answer = sum_marginal + sum_P_squared
print(answer)
if __name__ == "__main__":
main()
lam6er