fix merge

app/src/main/java/sudoku/Sudoku.java

@@ -18,7 +18,7 @@ public class Sudoku {
 	public Sudoku(List<Cell> cells, List<Block> blocks, List<IConstraint> constraints) {
 		this.cells = cells;
 		this.blocks = blocks;
-		this.constraints = new ArrayList<>(constraints);
+		this.constraints = constraints;
 	}
 
 	public Cell getCell(int x, int y) {
@@ -45,6 +45,14 @@ public class Sudoku {
 		throw new Error("Function isValid() not implemented");
 	}
 
+	public List<Cell> getCells() {
+		return this.cells;
+	}
+
+	public List<Block> getBlocks() {
+		return this.blocks;
+	}
+
 	public List<MutableCell> getMutableCells() {
 		List<MutableCell> mutableCells = new ArrayList<>();
 		for (Cell cell : this.cells) {