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| 1 | import java.util.Scanner; | |
| 2 | ||
| 3 | public class BalancedBrackets {
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| 4 | public static void main(String[] args) {
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| 5 | Scanner scan = new Scanner(System.in); | |
| 6 | ||
| 7 | int inputLines = Integer.parseInt(scan.nextLine()); | |
| 8 | int openingBracketsCount = 0; | |
| 9 | int closingBracketsCount = 0; | |
| 10 | boolean isBalanced = true; | |
| 11 | ||
| 12 | for (int i = 1; i <= inputLines; i++) {
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| 13 | ||
| 14 | String input = scan.nextLine(); | |
| 15 | ||
| 16 | if (input.equals("(")) {
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| 17 | openingBracketsCount++; | |
| 18 | if (openingBracketsCount - closingBracketsCount >= 2) {
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| 19 | isBalanced = false; | |
| 20 | break; | |
| 21 | } | |
| 22 | } else if (input.equals(")")) {
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| 23 | closingBracketsCount++; | |
| 24 | ||
| 25 | if (closingBracketsCount > openingBracketsCount) {
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| 26 | isBalanced = false; | |
| 27 | break; | |
| 28 | } | |
| 29 | } | |
| 30 | ||
| 31 | } | |
| 32 | if (openingBracketsCount != closingBracketsCount) {
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| 33 | isBalanced = false; | |
| 34 | } | |
| 35 | ||
| 36 | if (!isBalanced) {
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| 37 | System.out.println("UNBALANCED");
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| 38 | } else {
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| 39 | System.out.println("BALANCED");
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| 40 | } | |
| 41 | } | |
| 42 | } |
