| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 582482 | 2022-06-23T22:39:55 Z | coderInTraining | Tracks in the Snow (BOI13_tracks) | Java 11 | 163 ms | 12504 KB |
import java.util.*;
class Main {
public static void main (String[]args) {
Scanner scan = new Scanner (System.in);
int rows = scan.nextInt();
int columns = scan.nextInt();
char [][] grid = new char [rows][columns];
for (int i = 0; i < rows; i++) {
String line = scan.next();
for (int j = 0; j < columns; j++) {
grid[i][j] = line.charAt(j);
}
}
int [][] distances = new int [rows][columns];
for (int i = 0; i < rows; i++) {
Arrays.fill(distances[i], Integer.MAX_VALUE);
}
distances[0][0] = 1;
Queue <Pair> queue = new LinkedList <Pair>();
Pair startingPair = new Pair (0, 0);
queue.add(startingPair);
while (queue.isEmpty() == false) {
Pair curPair = queue.poll();
int cRow = curPair.row;
int cColumn = curPair.column;
int curDist = distances[cRow][cColumn];
char curChar = grid[cRow][cColumn];
if (cRow - 1 >= 0) {
if (grid[cRow - 1][cColumn] == curChar) {
if (curDist < distances[cRow - 1][cColumn]) {
distances[cRow - 1][cColumn] = curDist;
Pair addingPair = new Pair (cRow - 1, cColumn);
queue.add(addingPair);
}
}
else {
if (curDist + 1 < distances[cRow - 1][cColumn]) {
distances[cRow - 1][cColumn] = curDist + 1;
Pair addingPair = new Pair (cRow - 1, cColumn);
queue.add(addingPair);
}
}
}
if (cColumn + 1 < columns) {
if (grid[cRow][cColumn + 1] == curChar) {
if (curDist < distances[cRow][cColumn + 1]) {
distances[cRow][cColumn + 1] = curDist;
Pair addingPair = new Pair (cRow, cColumn + 1);
queue.add(addingPair);
}
}
else {
if (curDist + 1 < distances[cRow][cColumn + 1]) {
distances[cRow][cColumn + 1] = curDist + 1;
Pair addingPair = new Pair (cRow, cColumn + 1);
queue.add(addingPair);
}
}
}
if (cRow + 1 < rows) {
if (grid[cRow + 1][cColumn] == curChar) {
if (curDist < distances[cRow + 1][cColumn]) {
distances[cRow + 1][cColumn] = curDist;
Pair addingPair = new Pair (cRow + 1, cColumn);
queue.add(addingPair);
}
}
else {
if (curDist + 1 < distances[cRow + 1][cColumn]) {
distances[cRow + 1][cColumn] = curDist + 1;
Pair addingPair = new Pair (cRow + 1, cColumn);
queue.add(addingPair);
}
}
}
if (cColumn - 1 >= 0) {
if (grid[cRow][cColumn - 1] == curChar) {
if (curDist < distances[cRow][cColumn - 1]) {
distances[cRow][cColumn - 1] = curDist;
Pair addingPair = new Pair (cRow, cColumn - 1);
queue.add(addingPair);
}
}
else {
if (curDist + 1 < distances[cRow][cColumn - 1]) {
distances[cRow][cColumn - 1] = curDist + 1;
Pair addingPair = new Pair (cRow, cColumn - 1);
queue.add(addingPair);
}
}
}
}
int maxDist = 0;
for (int i = 0; i < rows; i++) {
for (int j = 0; j < columns; j++) {
maxDist = Math.max(maxDist, distances[i][j]);
}
}
System.out.println(maxDist);
}
private static class Pair {
int row;
int column;
public Pair (int row, int column) {
this.row = row;
this.column = column;
}
}
}
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Runtime error | 133 ms | 12504 KB | Execution failed because the return code was nonzero |
| 2 | Runtime error | 134 ms | 12252 KB | Execution failed because the return code was nonzero |
| 3 | Runtime error | 138 ms | 12048 KB | Execution failed because the return code was nonzero |
| 4 | Runtime error | 135 ms | 12132 KB | Execution failed because the return code was nonzero |
| 5 | Runtime error | 129 ms | 12324 KB | Execution failed because the return code was nonzero |
| 6 | Runtime error | 153 ms | 12188 KB | Execution failed because the return code was nonzero |
| 7 | Runtime error | 143 ms | 12128 KB | Execution failed because the return code was nonzero |
| 8 | Runtime error | 132 ms | 12068 KB | Execution failed because the return code was nonzero |
| 9 | Runtime error | 135 ms | 12188 KB | Execution failed because the return code was nonzero |
| 10 | Runtime error | 133 ms | 12092 KB | Execution failed because the return code was nonzero |
| 11 | Runtime error | 155 ms | 12088 KB | Execution failed because the return code was nonzero |
| 12 | Runtime error | 131 ms | 12120 KB | Execution failed because the return code was nonzero |
| 13 | Runtime error | 130 ms | 12004 KB | Execution failed because the return code was nonzero |
| 14 | Runtime error | 136 ms | 12156 KB | Execution failed because the return code was nonzero |
| 15 | Runtime error | 149 ms | 11972 KB | Execution failed because the return code was nonzero |
| 16 | Runtime error | 163 ms | 12068 KB | Execution failed because the return code was nonzero |
| 17 | Runtime error | 134 ms | 12096 KB | Execution failed because the return code was nonzero |
| 18 | Runtime error | 135 ms | 11996 KB | Execution failed because the return code was nonzero |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Runtime error | 143 ms | 12056 KB | Execution failed because the return code was nonzero |
| 2 | Runtime error | 149 ms | 11996 KB | Execution failed because the return code was nonzero |
| 3 | Runtime error | 141 ms | 12068 KB | Execution failed because the return code was nonzero |
| 4 | Runtime error | 134 ms | 12008 KB | Execution failed because the return code was nonzero |
| 5 | Runtime error | 136 ms | 11880 KB | Execution failed because the return code was nonzero |
| 6 | Runtime error | 131 ms | 12156 KB | Execution failed because the return code was nonzero |
| 7 | Runtime error | 133 ms | 12144 KB | Execution failed because the return code was nonzero |
| 8 | Runtime error | 148 ms | 12004 KB | Execution failed because the return code was nonzero |
| 9 | Runtime error | 138 ms | 11896 KB | Execution failed because the return code was nonzero |
| 10 | Runtime error | 132 ms | 12092 KB | Execution failed because the return code was nonzero |
| 11 | Runtime error | 133 ms | 12092 KB | Execution failed because the return code was nonzero |
| 12 | Runtime error | 149 ms | 12136 KB | Execution failed because the return code was nonzero |
| 13 | Runtime error | 135 ms | 12264 KB | Execution failed because the return code was nonzero |
| 14 | Runtime error | 137 ms | 12172 KB | Execution failed because the return code was nonzero |
| 15 | Runtime error | 135 ms | 11952 KB | Execution failed because the return code was nonzero |
| 16 | Runtime error | 139 ms | 11988 KB | Execution failed because the return code was nonzero |
| 17 | Runtime error | 136 ms | 12156 KB | Execution failed because the return code was nonzero |
| 18 | Runtime error | 137 ms | 12020 KB | Execution failed because the return code was nonzero |
| 19 | Runtime error | 134 ms | 11908 KB | Execution failed because the return code was nonzero |
| 20 | Runtime error | 139 ms | 12040 KB | Execution failed because the return code was nonzero |
| 21 | Runtime error | 145 ms | 11856 KB | Execution failed because the return code was nonzero |
| 22 | Runtime error | 135 ms | 12084 KB | Execution failed because the return code was nonzero |
| 23 | Runtime error | 132 ms | 11752 KB | Execution failed because the return code was nonzero |
| 24 | Runtime error | 133 ms | 12084 KB | Execution failed because the return code was nonzero |
| 25 | Runtime error | 138 ms | 12220 KB | Execution failed because the return code was nonzero |
| 26 | Runtime error | 138 ms | 11976 KB | Execution failed because the return code was nonzero |
| 27 | Runtime error | 131 ms | 12064 KB | Execution failed because the return code was nonzero |
| 28 | Runtime error | 132 ms | 12036 KB | Execution failed because the return code was nonzero |
| 29 | Runtime error | 138 ms | 12164 KB | Execution failed because the return code was nonzero |
| 30 | Runtime error | 142 ms | 12224 KB | Execution failed because the return code was nonzero |
| 31 | Runtime error | 134 ms | 12192 KB | Execution failed because the return code was nonzero |
| 32 | Runtime error | 129 ms | 12376 KB | Execution failed because the return code was nonzero |