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2961 - Deminare
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= Exemplul: = <code>deminare.in</code> 1 4 5 8 1 2 1 5 2 1 3 2 3 5 4 3 4 4 4 5 <code>deminare.out</code> 4 === Explicație === <code>V = 1</code>, deci se rezolvă doar cerința 1. <code>L = 4</code>, <code>C = 5</code>, <code>M = 8</code>. Minele sunt plasate la pozițiile <code>(1,2)</code>, <code>(1,5)</code>, <code>(2,1)</code>, <code>(3,2)</code>, <code>(3,5)</code>, <code>(4,3)</code>, <code>(4,4)</code> și <code>(4,5)</code>. Pe linia <code>1</code> sunt amplasate <code>2</code> mine; Pe linia <code>2</code> este amplasată <code>1</code> mină; Pe linia <code>3</code> sunt amplasate <code>2</code> mine; Pe linia <code>4</code> sunt amplasate <code>3</code> mine; Deci, există o singură linie pe care sunt amplasate un număr maxim de mine și anume linia <code>4</code>. <syntaxhighlight lang="python" line="1"> def citire_date(): L, C, M = map(int, input().split()) mine = [] for _ in range(M): x, y = map(int, input().split()) mine.append((x-1, y-1)) # Ajustare la indexare zero-based return L, C, M, mine def linii_cu_cele_mai_multe_mine(L, mine): count_per_line = [0] * L for (x, y) in mine: count_per_line[x] += 1 max_mine = max(count_per_line) linii_max = [i + 1 for i, count in enumerate(count_per_line) if count == max_mine] return linii_max def mutari_minime(L, C, mine): mine_set = set(mine) mine_positions = [(x, y) for x, y in mine] def mine_in_rect(x1, y1, x2, y2): count = 0 for x in range(x1, x2 + 1): for y in range(y1, y2 + 1): if (x, y) in mine_set: count += 1 return count min_moves = float('inf') for x1 in range(L): for y1 in range(C): for x2 in range(x1, L): for y2 in range(y1, C): total_in_rect = mine_in_rect(x1, y1, x2, y2) if total_in_rect == len(mine): min_moves = 0 break current_moves = len(mine) - total_in_rect min_moves = min(min_moves, current_moves) return min_moves def main(): L, C, M, mine = citire_date() linii_max = linii_cu_cele_mai_multe_mine(L, mine) min_mutari = mutari_minime(L, C, mine) print("Linii cu cele mai multe mine:", " ".join(map(str, linii_max))) print("Număr minim de mine mutate:", min_mutari) if __name__ == "__main__": main() </syntaxhighlight>
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