| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 318738 | 2020-11-03T04:40:51 Z | KWang31 | Travelling Salesperson (CCO20_day2problem1) | Java 11 | 3580 ms | 224368 KB |
import java.io.*; import java.util.*;
public class Main {
public static void main(String[] args) throws IOException {
BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
int N=Integer.parseInt(br.readLine());
boolean[][] adj=new boolean[N][N];
for (int i = 1; i < N; i++) {
String s=br.readLine();
for (int j = 0; j <i; j++) {
if(s.charAt(j)=='R'){
adj[i][j]=true; adj[j][i]=true;
}
}
}
boolean[] c=new boolean[N];//Tracks color of first edge, red=true
Deque<Integer> [][] dq=new Deque[N][2];//Tracks first part (same color as first edge)
int[] rev2=new int [N];//Tracks whether dq[1] is first or dq[0] is first
for (int i = 0; i < N; i++) {
dq[i][0]=new ArrayDeque<>(); dq[i][1]=new ArrayDeque<>();
dq[i][0].add(i);//Prevents empty stuff
}
if(adj[0][1]){
c[0]=true; c[1]=true;
}
dq[0][0].addLast(1); dq[1][0].addLast(0);
int k;
for (int i = 2; i < N; i++) {
/*
if(i==5){
for (int j = 0; j < i; j++) {
System.out.println(j+" "+c[j]);
System.out.println(dq[j][0]);
System.out.println(dq[j][1]);
}
}
*/
for (int j = 0; j < i; j++) {//We are adding vertex i
k=dq[j][rev2[j]].getLast();
/*
if(i==4 && j==0){
System.out.println(k+" "+adj[k][i]+" "+c[j]);
System.out.println(dq[j][rev2[j]]+" "+dq[j][1-rev2[j]]);
}
*/
if(adj[k][i]==c[j]){
if(dq[j][1-rev2[j]].isEmpty()){
if(j==0){
//Simply construct edge in reverse
c[i]=c[j];
Iterator<Integer> it=dq[j][rev2[j]].descendingIterator();
while(it.hasNext()){
dq[i][0].addLast(it.next());
}
}
dq[j][rev2[j]].addLast(i);//Now update
}else{
if(j==0){//Construct for i
c[i]=c[j];
Iterator<Integer> it=dq[j][rev2[j]].descendingIterator();
while(it.hasNext()){
dq[i][0].addLast(it.next());
}
it=dq[j][1-rev2[j]].descendingIterator();
while(it.hasNext()){
dq[i][1].addLast(it.next());
}
if(!dq[j][1-rev2[j]].isEmpty() && adj[j][dq[j][1-rev2[j]].getLast()]==c[i]){
dq[i][0].addLast(dq[i][1].removeFirst());
}else if(dq[j][1-rev2[j]].isEmpty() && adj[j][dq[j][rev2[j]].getLast()]!=c[i]){
dq[i][1].addFirst(dq[i][0].removeLast());
}
}
//Now update path
dq[j][rev2[j]].addLast(i);
if(adj[i][dq[j][1-rev2[j]].getFirst()]==c[j]){
dq[j][rev2[j]].addLast(dq[j][1-rev2[j]].removeFirst());
}
}
}else{
//First update path for i
if(j==0){
c[i]=!c[j];
dq[i][0].add(k);
Iterator<Integer> it=dq[j][1-rev2[j]].iterator();
while(it.hasNext()){
dq[i][0].addLast(it.next());
}
it=dq[j][rev2[j]].iterator();
while(it.hasNext()){
int n=it.next();
//System.out.println(n+"!");
dq[i][1].addLast(n);
}
dq[i][1].removeLast();
if(adj[j][dq[i][rev2[i]].getLast()]==c[i]){
dq[i][0].addLast(dq[i][1].removeFirst());
}
}
//Now update path for j
if(dq[j][rev2[j]].size()==2){
if(adj[j][i]!=c[j]){
dq[j][rev2[j]].removeFirst();
dq[j][1-rev2[j]].addFirst(dq[j][rev2[j]].removeFirst());
dq[j][1-rev2[j]].addFirst(i);
dq[j][1-rev2[j]].addFirst(j);
rev2[j]=1-rev2[j];
c[j]=!c[j];
}else{
dq[j][1-rev2[j]].addFirst(dq[j][rev2[j]].removeLast());
dq[j][rev2[j]].addLast(i);
}
}else{
dq[j][1-rev2[j]].addFirst(dq[j][rev2[j]].removeLast());
if(c[j]!=adj[i][dq[j][rev2[j]].getLast()]){
dq[j][1-rev2[j]].addFirst(i);
}else{
dq[j][rev2[j]].addLast(i);
}
}
}
}
}
StringBuilder sb=new StringBuilder();
for (int i = 0; i < N; i++) {
sb.append(N).append("\n");
Iterator<Integer> it=dq[i][rev2[i]].iterator();
while(it.hasNext()){
sb.append(it.next()+1).append(" ");
}
//sb.append("\n");
it=dq[i][1-rev2[i]].iterator();
while(it.hasNext()){
sb.append(it.next()+1).append(" ");
}
sb.append("\n");
}
System.out.println(sb.toString());
}
}
Compilation message
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 89 ms | 11364 KB | Output is correct |
| 2 | Correct | 88 ms | 11308 KB | Output is correct |
| 3 | Correct | 84 ms | 11440 KB | Output is correct |
| 4 | Correct | 78 ms | 11316 KB | Output is correct |
| 5 | Correct | 82 ms | 11440 KB | Output is correct |
| 6 | Correct | 87 ms | 11440 KB | Output is correct |
| 7 | Correct | 82 ms | 11312 KB | Output is correct |
| 8 | Correct | 90 ms | 11572 KB | Output is correct |
| 9 | Correct | 83 ms | 11448 KB | Output is correct |
| 10 | Correct | 83 ms | 11572 KB | Output is correct |
| 11 | Correct | 82 ms | 11204 KB | Output is correct |
| 12 | Correct | 80 ms | 11572 KB | Output is correct |
| 13 | Correct | 82 ms | 11300 KB | Output is correct |
| 14 | Correct | 84 ms | 11424 KB | Output is correct |
| 15 | Correct | 84 ms | 11556 KB | Output is correct |
| 16 | Correct | 2338 ms | 209880 KB | Output is correct |
| 17 | Correct | 1763 ms | 184144 KB | Output is correct |
| 18 | Correct | 85 ms | 11348 KB | Output is correct |
| 19 | Correct | 2169 ms | 200092 KB | Output is correct |
| 20 | Correct | 3170 ms | 199624 KB | Output is correct |
| 21 | Correct | 98 ms | 11772 KB | Output is correct |
| 22 | Correct | 2419 ms | 210852 KB | Output is correct |
| 23 | Correct | 3197 ms | 219848 KB | Output is correct |
| 24 | Correct | 136 ms | 13272 KB | Output is correct |
| 25 | Correct | 2581 ms | 203280 KB | Output is correct |
| 26 | Correct | 2565 ms | 211960 KB | Output is correct |
| 27 | Correct | 488 ms | 28928 KB | Output is correct |
| 28 | Correct | 3109 ms | 213524 KB | Output is correct |
| 29 | Correct | 2441 ms | 208852 KB | Output is correct |
| 30 | Correct | 2608 ms | 209008 KB | Output is correct |
| 31 | Correct | 1752 ms | 185368 KB | Output is correct |
| 32 | Correct | 2225 ms | 194748 KB | Output is correct |
| 33 | Correct | 2620 ms | 210080 KB | Output is correct |
| 34 | Correct | 2458 ms | 205892 KB | Output is correct |
| 35 | Correct | 2390 ms | 208076 KB | Output is correct |
| 36 | Correct | 3081 ms | 184224 KB | Output is correct |
| 37 | Correct | 2425 ms | 192568 KB | Output is correct |
| 38 | Correct | 1660 ms | 180660 KB | Output is correct |
| 39 | Correct | 2325 ms | 209620 KB | Output is correct |
| 40 | Correct | 2796 ms | 216428 KB | Output is correct |
| 41 | Correct | 2079 ms | 179944 KB | Output is correct |
| 42 | Correct | 1946 ms | 182580 KB | Output is correct |
| 43 | Correct | 2427 ms | 208608 KB | Output is correct |
| 44 | Correct | 2514 ms | 212552 KB | Output is correct |
| 45 | Correct | 2298 ms | 195868 KB | Output is correct |
| 46 | Correct | 2099 ms | 176036 KB | Output is correct |
| 47 | Correct | 3047 ms | 224368 KB | Output is correct |
| 48 | Correct | 2198 ms | 192720 KB | Output is correct |
| 49 | Correct | 2434 ms | 205332 KB | Output is correct |
| 50 | Correct | 3068 ms | 213560 KB | Output is correct |
| 51 | Correct | 2743 ms | 198448 KB | Output is correct |
| 52 | Correct | 3580 ms | 211892 KB | Output is correct |
| 53 | Correct | 2844 ms | 217388 KB | Output is correct |
| 54 | Correct | 2088 ms | 176460 KB | Output is correct |
| 55 | Correct | 3225 ms | 220632 KB | Output is correct |
| 56 | Correct | 3353 ms | 216188 KB | Output is correct |
| 57 | Correct | 3564 ms | 207144 KB | Output is correct |
| 58 | Correct | 2698 ms | 196268 KB | Output is correct |
| 59 | Correct | 2808 ms | 181488 KB | Output is correct |
| 60 | Correct | 3268 ms | 202776 KB | Output is correct |
| 61 | Correct | 3168 ms | 203244 KB | Output is correct |
| 62 | Correct | 3016 ms | 200568 KB | Output is correct |
| 63 | Correct | 2917 ms | 207472 KB | Output is correct |
| 64 | Correct | 2944 ms | 201668 KB | Output is correct |
| 65 | Correct | 3196 ms | 199136 KB | Output is correct |
| 66 | Correct | 3056 ms | 198448 KB | Output is correct |
| 67 | Correct | 3200 ms | 198500 KB | Output is correct |
| 68 | Correct | 2903 ms | 203060 KB | Output is correct |
| 69 | Correct | 3192 ms | 198364 KB | Output is correct |
| 70 | Correct | 2639 ms | 182496 KB | Output is correct |
| 71 | Correct | 3212 ms | 212340 KB | Output is correct |
| 72 | Correct | 2924 ms | 208292 KB | Output is correct |
| 73 | Correct | 2722 ms | 212740 KB | Output is correct |
| 74 | Correct | 3321 ms | 206876 KB | Output is correct |
| 75 | Correct | 3157 ms | 194736 KB | Output is correct |
| 76 | Correct | 2602 ms | 187880 KB | Output is correct |
| 77 | Correct | 3117 ms | 186012 KB | Output is correct |
| 78 | Correct | 3109 ms | 204840 KB | Output is correct |
| 79 | Correct | 2910 ms | 196960 KB | Output is correct |
| 80 | Correct | 2934 ms | 197668 KB | Output is correct |
| 81 | Correct | 3097 ms | 191800 KB | Output is correct |
| 82 | Correct | 3018 ms | 200628 KB | Output is correct |
| 83 | Correct | 2967 ms | 197280 KB | Output is correct |
| 84 | Correct | 2921 ms | 203960 KB | Output is correct |
| 85 | Correct | 2947 ms | 201272 KB | Output is correct |
| 86 | Correct | 2877 ms | 207960 KB | Output is correct |
| 87 | Correct | 769 ms | 35124 KB | Output is correct |
| 88 | Correct | 583 ms | 32192 KB | Output is correct |
| 89 | Correct | 3113 ms | 204340 KB | Output is correct |
| 90 | Correct | 3161 ms | 201588 KB | Output is correct |
| 91 | Correct | 538 ms | 30708 KB | Output is correct |
| 92 | Correct | 586 ms | 30464 KB | Output is correct |
| 93 | Correct | 3168 ms | 206620 KB | Output is correct |
| 94 | Correct | 2607 ms | 183168 KB | Output is correct |
| 95 | Correct | 617 ms | 30244 KB | Output is correct |
| 96 | Correct | 624 ms | 31836 KB | Output is correct |
| 97 | Correct | 2868 ms | 200740 KB | Output is correct |
| 98 | Correct | 2714 ms | 201340 KB | Output is correct |