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Copy pathMain.java
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41 lines (28 loc) · 939 Bytes
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import java.util.*;
public class Main {
public static boolean canWin(int leap, int[] game,int index) {
if ( (index<0) || (game[index]==1) ) {
return false;
}
if ( (index+1>game.length-1) || (index+leap>game.length-1) ) {
return true;
}
game[index]=1;
return canWin(leap, game, index-1) || canWin(leap, game, index+1)
|| canWin(leap, game, index+leap);
}
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int q = scan.nextInt();
while (q-- > 0) {
int n = scan.nextInt();
int leap = scan.nextInt();
int[] game = new int[n];
for (int i = 0; i < n; i++) {
game[i] = scan.nextInt();
}
System.out.println( (canWin(leap, game,0)) ? "YES" : "NO" );
}
scan.close();
}
}