| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 311279 | 2020-10-09T20:27:17 Z | KWang31 | Travelling Salesperson (CCO20_day2problem1) | Java 11 | 3574 ms | 242152 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 | 78 ms | 10236 KB | Output is correct |
| 2 | Correct | 76 ms | 10344 KB | Output is correct |
| 3 | Correct | 78 ms | 10340 KB | Output is correct |
| 4 | Correct | 76 ms | 10344 KB | Output is correct |
| 5 | Correct | 85 ms | 10104 KB | Output is correct |
| 6 | Correct | 77 ms | 10060 KB | Output is correct |
| 7 | Correct | 80 ms | 10184 KB | Output is correct |
| 8 | Correct | 81 ms | 10236 KB | Output is correct |
| 9 | Correct | 77 ms | 10232 KB | Output is correct |
| 10 | Correct | 76 ms | 10104 KB | Output is correct |
| 11 | Correct | 79 ms | 10352 KB | Output is correct |
| 12 | Correct | 77 ms | 10232 KB | Output is correct |
| 13 | Correct | 78 ms | 10420 KB | Output is correct |
| 14 | Correct | 79 ms | 10464 KB | Output is correct |
| 15 | Correct | 79 ms | 10344 KB | Output is correct |
| 16 | Correct | 1640 ms | 208496 KB | Output is correct |
| 17 | Correct | 1318 ms | 199180 KB | Output is correct |
| 18 | Correct | 83 ms | 10600 KB | Output is correct |
| 19 | Correct | 1466 ms | 202712 KB | Output is correct |
| 20 | Correct | 3574 ms | 228196 KB | Output is correct |
| 21 | Correct | 84 ms | 10532 KB | Output is correct |
| 22 | Correct | 1743 ms | 210856 KB | Output is correct |
| 23 | Correct | 1819 ms | 219048 KB | Output is correct |
| 24 | Correct | 98 ms | 10728 KB | Output is correct |
| 25 | Correct | 1567 ms | 207100 KB | Output is correct |
| 26 | Correct | 1988 ms | 220644 KB | Output is correct |
| 27 | Correct | 354 ms | 30740 KB | Output is correct |
| 28 | Correct | 1755 ms | 206856 KB | Output is correct |
| 29 | Correct | 1936 ms | 213296 KB | Output is correct |
| 30 | Correct | 1767 ms | 208540 KB | Output is correct |
| 31 | Correct | 1554 ms | 198440 KB | Output is correct |
| 32 | Correct | 1647 ms | 212884 KB | Output is correct |
| 33 | Correct | 1852 ms | 213000 KB | Output is correct |
| 34 | Correct | 1736 ms | 208732 KB | Output is correct |
| 35 | Correct | 1953 ms | 215068 KB | Output is correct |
| 36 | Correct | 1668 ms | 205440 KB | Output is correct |
| 37 | Correct | 1711 ms | 207396 KB | Output is correct |
| 38 | Correct | 1402 ms | 199396 KB | Output is correct |
| 39 | Correct | 1677 ms | 208800 KB | Output is correct |
| 40 | Correct | 1631 ms | 207416 KB | Output is correct |
| 41 | Correct | 1498 ms | 204392 KB | Output is correct |
| 42 | Correct | 1370 ms | 197784 KB | Output is correct |
| 43 | Correct | 1924 ms | 210448 KB | Output is correct |
| 44 | Correct | 1778 ms | 207012 KB | Output is correct |
| 45 | Correct | 1738 ms | 209136 KB | Output is correct |
| 46 | Correct | 1229 ms | 198404 KB | Output is correct |
| 47 | Correct | 1571 ms | 217008 KB | Output is correct |
| 48 | Correct | 1784 ms | 215592 KB | Output is correct |
| 49 | Correct | 1702 ms | 212172 KB | Output is correct |
| 50 | Correct | 1743 ms | 207000 KB | Output is correct |
| 51 | Correct | 1950 ms | 222596 KB | Output is correct |
| 52 | Correct | 1812 ms | 227464 KB | Output is correct |
| 53 | Correct | 1818 ms | 211020 KB | Output is correct |
| 54 | Correct | 1498 ms | 206624 KB | Output is correct |
| 55 | Correct | 1792 ms | 227804 KB | Output is correct |
| 56 | Correct | 2121 ms | 230688 KB | Output is correct |
| 57 | Correct | 2137 ms | 229304 KB | Output is correct |
| 58 | Correct | 1877 ms | 238620 KB | Output is correct |
| 59 | Correct | 2047 ms | 225340 KB | Output is correct |
| 60 | Correct | 1922 ms | 242152 KB | Output is correct |
| 61 | Correct | 1859 ms | 225420 KB | Output is correct |
| 62 | Correct | 1867 ms | 228464 KB | Output is correct |
| 63 | Correct | 1963 ms | 226832 KB | Output is correct |
| 64 | Correct | 2013 ms | 240952 KB | Output is correct |
| 65 | Correct | 2059 ms | 241308 KB | Output is correct |
| 66 | Correct | 1860 ms | 227652 KB | Output is correct |
| 67 | Correct | 1970 ms | 226492 KB | Output is correct |
| 68 | Correct | 2109 ms | 230624 KB | Output is correct |
| 69 | Correct | 1959 ms | 240300 KB | Output is correct |
| 70 | Correct | 2073 ms | 240632 KB | Output is correct |
| 71 | Correct | 1591 ms | 223788 KB | Output is correct |
| 72 | Correct | 2128 ms | 224436 KB | Output is correct |
| 73 | Correct | 1930 ms | 242144 KB | Output is correct |
| 74 | Correct | 2080 ms | 226860 KB | Output is correct |
| 75 | Correct | 1903 ms | 224560 KB | Output is correct |
| 76 | Correct | 3539 ms | 226488 KB | Output is correct |
| 77 | Correct | 1874 ms | 226024 KB | Output is correct |
| 78 | Correct | 1994 ms | 228096 KB | Output is correct |
| 79 | Correct | 2087 ms | 225560 KB | Output is correct |
| 80 | Correct | 1991 ms | 236748 KB | Output is correct |
| 81 | Correct | 3393 ms | 225728 KB | Output is correct |
| 82 | Correct | 2001 ms | 225512 KB | Output is correct |
| 83 | Correct | 1989 ms | 225288 KB | Output is correct |
| 84 | Correct | 1868 ms | 232932 KB | Output is correct |
| 85 | Correct | 1956 ms | 237396 KB | Output is correct |
| 86 | Correct | 1984 ms | 229840 KB | Output is correct |
| 87 | Correct | 392 ms | 31360 KB | Output is correct |
| 88 | Correct | 354 ms | 30640 KB | Output is correct |
| 89 | Correct | 2179 ms | 219652 KB | Output is correct |
| 90 | Correct | 2258 ms | 218252 KB | Output is correct |
| 91 | Correct | 351 ms | 31024 KB | Output is correct |
| 92 | Correct | 366 ms | 31428 KB | Output is correct |
| 93 | Correct | 2130 ms | 234292 KB | Output is correct |
| 94 | Correct | 2158 ms | 231760 KB | Output is correct |
| 95 | Correct | 376 ms | 31772 KB | Output is correct |
| 96 | Correct | 345 ms | 31780 KB | Output is correct |
| 97 | Correct | 2302 ms | 231856 KB | Output is correct |
| 98 | Correct | 1840 ms | 216076 KB | Output is correct |