| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 840165 | 2023-08-31T07:39:30 Z | KLPP | Longest Trip (IOI23_longesttrip) | C++17 | 145 ms | 852 KB |
#include "longesttrip.h"
#include<bits/stdc++.h>
using namespace std;
typedef long long int lld;
#define rep(i,a,b) for(int i=a;i<b;i++)
#define trav(a,v) for(auto a:v)
int n;
int p[1000];
vector<int> ord;
bool visited[1000000];
vector<int> tr[1000];
bool table[1000][1000];
vector<int> nvis;
vector<int> T;
int get_vert(int node){
nvis.clear();
rep(i,0,n){
if(!visited[i])nvis.push_back(i);
}
if(nvis.empty())return -1;
if(!are_connected({node},nvis))return -1;
int lo=0;
int hi=nvis.size()-1;
while(hi-lo>0){
int mid=(hi+lo)/2;
T.clear();
rep(i,lo,mid+1)T.push_back(nvis[i]);
if(are_connected({node},T)){
hi=mid;
}else{
lo=mid+1;
}
}
return nvis[lo];
}
void DFS(int node){
visited[node]=true;
ord.push_back(node);
while(true){
int a=get_vert(node);
if(a==-1)break;
DFS(a);
tr[node].push_back(a);
tr[a].push_back(node);
p[a]=node;
}
}
bool test(int a, int b){
if(are_connected({a},{b}))return true;
return false;
}
std::vector<int> longest_trip(int N, int D)
{
n=N;
rep(i,0,n){
rep(j,0,n)table[i][j]=false;
p[i]=-1;
visited[i]=false;
tr[i].clear();
}
vector<int> ans;
rep(i,0,n){
if(!visited[i]){
ord.clear();
DFS(i);
int cnt=0;
int gt=-1;
rep(j,0,n){
if((int)tr[j].size()>=3 || (j==i && (int)tr[j].size()>=2)){
cnt++;
gt=j;
}
}
pair<int,int> bot={-1,-1};
rep(j,0,n){
if(j!=i && (int)tr[j].size()==1){
if(bot.first==-1)bot.first=j;
else{
if(bot.second!=-1)assert(false);
bot.second=j;
}
}
}
assert(cnt<=1);
assert((gt!=-1) || (bot.second==-1));
if(gt==-1){
if(ans.size()<ord.size())ans=ord;
}else{
ord.clear();
vector<int> p1;
vector<int> p2;
vector<int> p3;
int x=bot.first;
int y=bot.second;
int z=gt;
while(x!=gt){
p1.push_back(x);
x=p[x];
}
while(y!=gt){
p2.push_back(y);
y=p[y];
}
while(p[z]!=-1){
p3.push_back(p[z]);
z=p[z];
}
reverse(p3.begin(),p3.end());
trav(a,p3)ord.push_back(a);
if(p[gt]==-1){
reverse(p2.begin(),p2.end());
trav(a,p1){
ord.push_back(a);
}
ord.push_back(gt);
trav(a,p2)ord.push_back(a);
//~ rep(i,0,(int)ord.size()-1){
//~ if(!test(ord[i],ord[i+1]))assert(false);
//~ }
}else{
if(test(bot.first,p[gt])){
reverse(p2.begin(),p2.end());
trav(a,p1)ord.push_back(a);
ord.push_back(gt);
trav(a,p2)ord.push_back(a);
//~ rep(i,0,(int)ord.size()-1){
//~ if(!test(ord[i],ord[i+1]))assert(false);
//~ }
}else{
reverse(p1.begin(),p1.end());
trav(a,p2)ord.push_back(a);
ord.push_back(gt);
trav(a,p1)ord.push_back(a);
//~ rep(i,0,(int)ord.size()-1){
//~ if(!test(ord[i],ord[i+1]))assert(false);
//~ }
}
}
if(ans.size()<ord.size())ans=ord;
}
rep(j,0,n){
trav(a,tr[j]){
if(!test(a,j))assert(false);
}
tr[j].clear();
p[j]=-1;
}
}
}
return ans;
}
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 1 ms | 336 KB | Output is correct |
| 2 | Correct | 22 ms | 592 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 18 ms | 336 KB | Output is correct |
| 2 | Correct | 44 ms | 336 KB | Output is correct |
| 3 | Correct | 63 ms | 336 KB | Output is correct |
| 4 | Correct | 76 ms | 476 KB | Output is correct |
| 5 | Correct | 80 ms | 608 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 18 ms | 208 KB | Output is correct |
| 2 | Correct | 43 ms | 336 KB | Output is correct |
| 3 | Correct | 63 ms | 336 KB | Output is correct |
| 4 | Correct | 81 ms | 476 KB | Output is correct |
| 5 | Correct | 100 ms | 612 KB | Output is correct |
| 6 | Correct | 23 ms | 336 KB | Output is correct |
| 7 | Correct | 34 ms | 336 KB | Output is correct |
| 8 | Correct | 65 ms | 336 KB | Output is correct |
| 9 | Correct | 60 ms | 336 KB | Output is correct |
| 10 | Correct | 87 ms | 592 KB | Output is correct |
| 11 | Correct | 85 ms | 628 KB | Output is correct |
| 12 | Correct | 99 ms | 592 KB | Output is correct |
| 13 | Correct | 107 ms | 600 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 18 ms | 336 KB | Output is correct |
| 2 | Correct | 31 ms | 336 KB | Output is correct |
| 3 | Correct | 65 ms | 388 KB | Output is correct |
| 4 | Correct | 90 ms | 464 KB | Output is correct |
| 5 | Correct | 107 ms | 744 KB | Output is correct |
| 6 | Correct | 25 ms | 336 KB | Output is correct |
| 7 | Correct | 34 ms | 336 KB | Output is correct |
| 8 | Correct | 60 ms | 336 KB | Output is correct |
| 9 | Correct | 57 ms | 336 KB | Output is correct |
| 10 | Correct | 80 ms | 616 KB | Output is correct |
| 11 | Correct | 109 ms | 612 KB | Output is correct |
| 12 | Correct | 88 ms | 612 KB | Output is correct |
| 13 | Correct | 111 ms | 592 KB | Output is correct |
| 14 | Correct | 18 ms | 208 KB | Output is correct |
| 15 | Correct | 21 ms | 336 KB | Output is correct |
| 16 | Correct | 36 ms | 336 KB | Output is correct |
| 17 | Correct | 49 ms | 336 KB | Output is correct |
| 18 | Correct | 67 ms | 336 KB | Output is correct |
| 19 | Correct | 79 ms | 336 KB | Output is correct |
| 20 | Correct | 73 ms | 336 KB | Output is correct |
| 21 | Correct | 105 ms | 616 KB | Output is correct |
| 22 | Correct | 82 ms | 592 KB | Output is correct |
| 23 | Correct | 76 ms | 728 KB | Output is correct |
| 24 | Correct | 77 ms | 720 KB | Output is correct |
| 25 | Correct | 27 ms | 336 KB | Output is correct |
| 26 | Correct | 19 ms | 460 KB | Output is correct |
| 27 | Correct | 48 ms | 336 KB | Output is correct |
| 28 | Correct | 47 ms | 336 KB | Output is correct |
| 29 | Correct | 47 ms | 336 KB | Output is correct |
| 30 | Correct | 83 ms | 336 KB | Output is correct |
| 31 | Correct | 58 ms | 336 KB | Output is correct |
| 32 | Correct | 62 ms | 336 KB | Output is correct |
| 33 | Correct | 77 ms | 448 KB | Output is correct |
| 34 | Correct | 90 ms | 336 KB | Output is correct |
| 35 | Correct | 70 ms | 336 KB | Output is correct |
| 36 | Correct | 103 ms | 852 KB | Output is correct |
| 37 | Correct | 102 ms | 612 KB | Output is correct |
| 38 | Correct | 87 ms | 604 KB | Output is correct |
| 39 | Correct | 81 ms | 624 KB | Output is correct |
| 40 | Correct | 74 ms | 592 KB | Output is correct |
| 41 | Correct | 145 ms | 620 KB | Output is correct |
| 42 | Correct | 120 ms | 620 KB | Output is correct |
| 43 | Correct | 95 ms | 616 KB | Output is correct |
| 44 | Correct | 89 ms | 592 KB | Output is correct |
| 45 | Correct | 30 ms | 336 KB | Output is correct |
| 46 | Correct | 26 ms | 208 KB | Output is correct |
| 47 | Correct | 36 ms | 336 KB | Output is correct |
| 48 | Correct | 33 ms | 336 KB | Output is correct |
| 49 | Correct | 38 ms | 336 KB | Output is correct |
| 50 | Correct | 75 ms | 336 KB | Output is correct |
| 51 | Correct | 38 ms | 336 KB | Output is correct |
| 52 | Correct | 58 ms | 400 KB | Output is correct |
| 53 | Correct | 89 ms | 336 KB | Output is correct |
| 54 | Correct | 58 ms | 444 KB | Output is correct |
| 55 | Correct | 68 ms | 336 KB | Output is correct |
| 56 | Correct | 79 ms | 636 KB | Output is correct |
| 57 | Correct | 119 ms | 628 KB | Output is correct |
| 58 | Correct | 72 ms | 612 KB | Output is correct |
| 59 | Correct | 101 ms | 592 KB | Output is correct |
| 60 | Correct | 110 ms | 664 KB | Output is correct |
| 61 | Correct | 75 ms | 592 KB | Output is correct |
| 62 | Correct | 98 ms | 624 KB | Output is correct |
| 63 | Correct | 96 ms | 624 KB | Output is correct |
| 64 | Correct | 103 ms | 620 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 24 ms | 460 KB | Output is correct |
| 2 | Correct | 38 ms | 336 KB | Output is correct |
| 3 | Correct | 48 ms | 336 KB | Output is correct |
| 4 | Partially correct | 50 ms | 476 KB | Output is partially correct |
| 5 | Partially correct | 69 ms | 628 KB | Output is partially correct |
| 6 | Correct | 12 ms | 336 KB | Output is correct |
| 7 | Correct | 40 ms | 336 KB | Output is correct |
| 8 | Correct | 50 ms | 336 KB | Output is correct |
| 9 | Partially correct | 38 ms | 444 KB | Output is partially correct |
| 10 | Partially correct | 82 ms | 604 KB | Output is partially correct |
| 11 | Partially correct | 111 ms | 616 KB | Output is partially correct |
| 12 | Partially correct | 101 ms | 616 KB | Output is partially correct |
| 13 | Partially correct | 95 ms | 616 KB | Output is partially correct |
| 14 | Correct | 18 ms | 336 KB | Output is correct |
| 15 | Correct | 32 ms | 336 KB | Output is correct |
| 16 | Correct | 41 ms | 336 KB | Output is correct |
| 17 | Correct | 57 ms | 336 KB | Output is correct |
| 18 | Correct | 45 ms | 336 KB | Output is correct |
| 19 | Partially correct | 85 ms | 336 KB | Output is partially correct |
| 20 | Partially correct | 72 ms | 336 KB | Output is partially correct |
| 21 | Correct | 21 ms | 336 KB | Output is correct |
| 22 | Correct | 25 ms | 336 KB | Output is correct |
| 23 | Correct | 46 ms | 336 KB | Output is correct |
| 24 | Correct | 37 ms | 336 KB | Output is correct |
| 25 | Correct | 24 ms | 336 KB | Output is correct |
| 26 | Partially correct | 62 ms | 336 KB | Output is partially correct |
| 27 | Partially correct | 68 ms | 336 KB | Output is partially correct |
| 28 | Partially correct | 58 ms | 400 KB | Output is partially correct |
| 29 | Partially correct | 83 ms | 448 KB | Output is partially correct |
| 30 | Partially correct | 86 ms | 336 KB | Output is partially correct |
| 31 | Partially correct | 86 ms | 452 KB | Output is partially correct |
| 32 | Correct | 33 ms | 336 KB | Output is correct |
| 33 | Correct | 29 ms | 336 KB | Output is correct |
| 34 | Correct | 44 ms | 336 KB | Output is correct |
| 35 | Correct | 46 ms | 336 KB | Output is correct |
| 36 | Correct | 35 ms | 336 KB | Output is correct |
| 37 | Partially correct | 50 ms | 336 KB | Output is partially correct |
| 38 | Partially correct | 81 ms | 336 KB | Output is partially correct |
| 39 | Partially correct | 43 ms | 404 KB | Output is partially correct |
| 40 | Partially correct | 82 ms | 444 KB | Output is partially correct |
| 41 | Partially correct | 78 ms | 448 KB | Output is partially correct |
| 42 | Partially correct | 70 ms | 448 KB | Output is partially correct |
| 43 | Partially correct | 81 ms | 592 KB | Output is partially correct |
| 44 | Partially correct | 109 ms | 616 KB | Output is partially correct |
| 45 | Partially correct | 81 ms | 592 KB | Output is partially correct |
| 46 | Partially correct | 96 ms | 612 KB | Output is partially correct |
| 47 | Partially correct | 94 ms | 620 KB | Output is partially correct |
| 48 | Partially correct | 103 ms | 608 KB | Output is partially correct |
| 49 | Partially correct | 90 ms | 624 KB | Output is partially correct |
| 50 | Partially correct | 126 ms | 632 KB | Output is partially correct |
| 51 | Partially correct | 101 ms | 592 KB | Output is partially correct |
| 52 | Partially correct | 73 ms | 592 KB | Output is partially correct |
| 53 | Partially correct | 107 ms | 592 KB | Output is partially correct |
| 54 | Partially correct | 62 ms | 636 KB | Output is partially correct |
| 55 | Partially correct | 116 ms | 592 KB | Output is partially correct |
| 56 | Partially correct | 106 ms | 592 KB | Output is partially correct |
| 57 | Partially correct | 115 ms | 608 KB | Output is partially correct |
| 58 | Partially correct | 96 ms | 740 KB | Output is partially correct |
| 59 | Partially correct | 112 ms | 592 KB | Output is partially correct |
| 60 | Partially correct | 107 ms | 616 KB | Output is partially correct |
| 61 | Partially correct | 107 ms | 616 KB | Output is partially correct |
| 62 | Partially correct | 119 ms | 632 KB | Output is partially correct |
| 63 | Partially correct | 90 ms | 632 KB | Output is partially correct |
| 64 | Partially correct | 123 ms | 632 KB | Output is partially correct |
| 65 | Partially correct | 86 ms | 620 KB | Output is partially correct |
| 66 | Partially correct | 95 ms | 632 KB | Output is partially correct |
| 67 | Partially correct | 93 ms | 624 KB | Output is partially correct |
| 68 | Partially correct | 115 ms | 620 KB | Output is partially correct |
| 69 | Partially correct | 103 ms | 612 KB | Output is partially correct |
| 70 | Partially correct | 113 ms | 616 KB | Output is partially correct |
| 71 | Partially correct | 98 ms | 624 KB | Output is partially correct |
| 72 | Partially correct | 116 ms | 624 KB | Output is partially correct |
| 73 | Partially correct | 88 ms | 752 KB | Output is partially correct |
| 74 | Partially correct | 107 ms | 632 KB | Output is partially correct |
| 75 | Partially correct | 100 ms | 748 KB | Output is partially correct |
| 76 | Partially correct | 104 ms | 604 KB | Output is partially correct |
| 77 | Partially correct | 104 ms | 608 KB | Output is partially correct |
| 78 | Partially correct | 106 ms | 628 KB | Output is partially correct |
| 79 | Partially correct | 86 ms | 592 KB | Output is partially correct |
| 80 | Partially correct | 70 ms | 732 KB | Output is partially correct |
| 81 | Partially correct | 119 ms | 616 KB | Output is partially correct |
| 82 | Partially correct | 63 ms | 624 KB | Output is partially correct |