| # | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 942587 | 2024-03-10T23:03:53 Z | MilosMilutinovic | Longest Trip (IOI23_longesttrip) | C++17 | 806 ms | 1468 KB |
#include "longesttrip.h"
#include<bits/stdc++.h>
#define pb push_back
using namespace std;
bool con[305][305],was[305];
vector<int> res,cur;
void dfs(int x){
cur.pb(x);
was[x]=true;
if(cur.size()>res.size()) res=cur;
for(int y=0;y<300;y++){
if(!was[y]&&con[x][y]){
dfs(y);
}
}
cur.pop_back();
}
mt19937 mrand(time(0));
vector<int> longest_trip(int n,int d){
if(d==3){
vector<int> ans;
for(int i=0;i<n;i++) ans.pb(i);
return ans;
}
if(d==2){
for(int i=0;i<300;i++) for(int j=0;j<300;j++) con[i][j]=false;
for(int i=0;i<n;i++){
for(int j=i+1;j<n;j++){
con[i][j]=con[j][i]=are_connected({i},{j});
}
}
res={};
for(int i=0;i<n;i++){
for(int j=0;j<n;j++) was[j]=false;
dfs(i);
}
return res;
}
vector<int> ord(n);
iota(ord.begin(),ord.end(),0);
shuffle(ord.begin(),ord.end(),mrand);
vector<int> chn1(1,ord.back()),chn2;
ord.pop_back();
for(int i:ord){
if(!chn1.empty()&&!chn2.empty()){
bool ok1=are_connected({i},chn1),ok2=are_connected({i},chn2);
if(ok1&&ok2){
if(are_connected({i},{chn2[0]})) swap(chn1,chn2);
swap(chn1[0],chn1.back());
int l=0,r=chn2.size()-1,p=0;
while(l<=r){
int mid=(l+r)/2;
vector<int> qv;
for(int j=0;j<=mid;j++) qv.pb(chn2[j]);
if(are_connected({i},qv)) p=mid,r=mid-1;
else l=mid+1;
}
swap(chn2[p],chn2[0]);
chn1.pb(i);
for(int v:chn2) chn1.pb(v);
chn2.clear();
continue;
}
if(!ok1) chn2.pb(i);
if(!ok2) chn1.pb(i);
continue;
}
bool ok=are_connected({i},chn1);
if(!ok){
chn2={i};
continue;
}
if(are_connected({i},{chn1[0]})){
reverse(chn1.begin(),chn1.end());
chn1.pb(i);
continue;
}
int l=0,r=(int)chn1.size()-1,p=0;
while(l<=r){
int mid=(l+r)/2;
vector<int> qv;
for(int j=mid;j<(int)chn1.size();j++) qv.pb(chn1[j]);
if(are_connected({i},qv)) p=mid,l=mid+1;
else r=mid-1;
}
p=chn1[p];
while(chn1.back()!=p){
int x=chn1.back();
chn1.pop_back();
reverse(chn1.begin(),chn1.end());
chn1.pb(x);
reverse(chn1.begin(),chn1.end());
}
chn1.pb(i);
}
return chn1.size()>chn2.size()?chn1:chn2;
}
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 1 ms | 756 KB | Output is correct |
| 2 | Correct | 6 ms | 732 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 3 ms | 344 KB | Output is correct |
| 2 | Correct | 1 ms | 344 KB | Output is correct |
| 3 | Correct | 1 ms | 344 KB | Output is correct |
| 4 | Correct | 1 ms | 344 KB | Output is correct |
| 5 | Correct | 1 ms | 344 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 10 ms | 344 KB | Output is correct |
| 2 | Correct | 22 ms | 344 KB | Output is correct |
| 3 | Correct | 135 ms | 600 KB | Output is correct |
| 4 | Correct | 369 ms | 520 KB | Output is correct |
| 5 | Correct | 782 ms | 508 KB | Output is correct |
| 6 | Correct | 9 ms | 344 KB | Output is correct |
| 7 | Correct | 23 ms | 344 KB | Output is correct |
| 8 | Correct | 140 ms | 528 KB | Output is correct |
| 9 | Correct | 279 ms | 592 KB | Output is correct |
| 10 | Correct | 772 ms | 520 KB | Output is correct |
| 11 | Correct | 806 ms | 504 KB | Output is correct |
| 12 | Correct | 704 ms | 504 KB | Output is correct |
| 13 | Correct | 795 ms | 504 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 10 ms | 500 KB | Output is correct |
| 2 | Correct | 9 ms | 344 KB | Output is correct |
| 3 | Correct | 9 ms | 344 KB | Output is correct |
| 4 | Correct | 13 ms | 452 KB | Output is correct |
| 5 | Correct | 18 ms | 600 KB | Output is correct |
| 6 | Correct | 9 ms | 344 KB | Output is correct |
| 7 | Correct | 10 ms | 344 KB | Output is correct |
| 8 | Correct | 11 ms | 600 KB | Output is correct |
| 9 | Correct | 11 ms | 444 KB | Output is correct |
| 10 | Correct | 18 ms | 476 KB | Output is correct |
| 11 | Correct | 17 ms | 476 KB | Output is correct |
| 12 | Correct | 19 ms | 708 KB | Output is correct |
| 13 | Correct | 18 ms | 476 KB | Output is correct |
| 14 | Correct | 7 ms | 344 KB | Output is correct |
| 15 | Correct | 9 ms | 344 KB | Output is correct |
| 16 | Correct | 15 ms | 344 KB | Output is correct |
| 17 | Correct | 17 ms | 344 KB | Output is correct |
| 18 | Correct | 14 ms | 344 KB | Output is correct |
| 19 | Correct | 16 ms | 448 KB | Output is correct |
| 20 | Correct | 20 ms | 444 KB | Output is correct |
| 21 | Correct | 23 ms | 472 KB | Output is correct |
| 22 | Correct | 23 ms | 724 KB | Output is correct |
| 23 | Correct | 22 ms | 624 KB | Output is correct |
| 24 | Correct | 24 ms | 872 KB | Output is correct |
| 25 | Correct | 9 ms | 344 KB | Output is correct |
| 26 | Correct | 7 ms | 344 KB | Output is correct |
| 27 | Correct | 10 ms | 344 KB | Output is correct |
| 28 | Correct | 8 ms | 344 KB | Output is correct |
| 29 | Correct | 10 ms | 344 KB | Output is correct |
| 30 | Correct | 10 ms | 444 KB | Output is correct |
| 31 | Correct | 10 ms | 444 KB | Output is correct |
| 32 | Correct | 10 ms | 344 KB | Output is correct |
| 33 | Correct | 12 ms | 600 KB | Output is correct |
| 34 | Correct | 11 ms | 448 KB | Output is correct |
| 35 | Correct | 12 ms | 444 KB | Output is correct |
| 36 | Correct | 17 ms | 476 KB | Output is correct |
| 37 | Correct | 18 ms | 708 KB | Output is correct |
| 38 | Correct | 20 ms | 600 KB | Output is correct |
| 39 | Correct | 18 ms | 460 KB | Output is correct |
| 40 | Correct | 18 ms | 452 KB | Output is correct |
| 41 | Correct | 19 ms | 960 KB | Output is correct |
| 42 | Correct | 17 ms | 804 KB | Output is correct |
| 43 | Correct | 17 ms | 448 KB | Output is correct |
| 44 | Correct | 17 ms | 704 KB | Output is correct |
| 45 | Correct | 14 ms | 344 KB | Output is correct |
| 46 | Correct | 11 ms | 344 KB | Output is correct |
| 47 | Correct | 15 ms | 344 KB | Output is correct |
| 48 | Correct | 14 ms | 344 KB | Output is correct |
| 49 | Correct | 14 ms | 344 KB | Output is correct |
| 50 | Correct | 24 ms | 440 KB | Output is correct |
| 51 | Correct | 18 ms | 700 KB | Output is correct |
| 52 | Correct | 16 ms | 448 KB | Output is correct |
| 53 | Correct | 21 ms | 856 KB | Output is correct |
| 54 | Correct | 23 ms | 452 KB | Output is correct |
| 55 | Correct | 23 ms | 600 KB | Output is correct |
| 56 | Correct | 49 ms | 976 KB | Output is correct |
| 57 | Correct | 28 ms | 472 KB | Output is correct |
| 58 | Correct | 29 ms | 720 KB | Output is correct |
| 59 | Correct | 28 ms | 472 KB | Output is correct |
| 60 | Correct | 22 ms | 716 KB | Output is correct |
| 61 | Correct | 33 ms | 720 KB | Output is correct |
| 62 | Correct | 27 ms | 720 KB | Output is correct |
| 63 | Correct | 24 ms | 476 KB | Output is correct |
| 64 | Correct | 23 ms | 728 KB | Output is correct |
| # | Verdict | Execution time | Memory | Grader output |
|---|---|---|---|---|
| 1 | Correct | 8 ms | 344 KB | Output is correct |
| 2 | Correct | 9 ms | 344 KB | Output is correct |
| 3 | Correct | 10 ms | 344 KB | Output is correct |
| 4 | Correct | 14 ms | 452 KB | Output is correct |
| 5 | Partially correct | 22 ms | 720 KB | Output is partially correct |
| 6 | Correct | 12 ms | 340 KB | Output is correct |
| 7 | Correct | 9 ms | 344 KB | Output is correct |
| 8 | Correct | 11 ms | 600 KB | Output is correct |
| 9 | Correct | 15 ms | 448 KB | Output is correct |
| 10 | Partially correct | 19 ms | 480 KB | Output is partially correct |
| 11 | Partially correct | 18 ms | 728 KB | Output is partially correct |
| 12 | Partially correct | 17 ms | 720 KB | Output is partially correct |
| 13 | Partially correct | 19 ms | 724 KB | Output is partially correct |
| 14 | Correct | 7 ms | 344 KB | Output is correct |
| 15 | Correct | 8 ms | 344 KB | Output is correct |
| 16 | Correct | 14 ms | 344 KB | Output is correct |
| 17 | Correct | 15 ms | 344 KB | Output is correct |
| 18 | Correct | 15 ms | 600 KB | Output is correct |
| 19 | Correct | 19 ms | 444 KB | Output is correct |
| 20 | Correct | 18 ms | 600 KB | Output is correct |
| 21 | Correct | 9 ms | 344 KB | Output is correct |
| 22 | Correct | 8 ms | 344 KB | Output is correct |
| 23 | Correct | 8 ms | 344 KB | Output is correct |
| 24 | Correct | 8 ms | 344 KB | Output is correct |
| 25 | Correct | 7 ms | 344 KB | Output is correct |
| 26 | Correct | 11 ms | 440 KB | Output is correct |
| 27 | Correct | 13 ms | 436 KB | Output is correct |
| 28 | Correct | 10 ms | 344 KB | Output is correct |
| 29 | Correct | 12 ms | 452 KB | Output is correct |
| 30 | Correct | 13 ms | 604 KB | Output is correct |
| 31 | Correct | 11 ms | 444 KB | Output is correct |
| 32 | Correct | 12 ms | 344 KB | Output is correct |
| 33 | Correct | 14 ms | 344 KB | Output is correct |
| 34 | Correct | 15 ms | 344 KB | Output is correct |
| 35 | Correct | 13 ms | 344 KB | Output is correct |
| 36 | Correct | 16 ms | 344 KB | Output is correct |
| 37 | Partially correct | 23 ms | 440 KB | Output is partially correct |
| 38 | Correct | 17 ms | 444 KB | Output is correct |
| 39 | Correct | 16 ms | 440 KB | Output is correct |
| 40 | Partially correct | 23 ms | 704 KB | Output is partially correct |
| 41 | Partially correct | 20 ms | 444 KB | Output is partially correct |
| 42 | Partially correct | 19 ms | 600 KB | Output is partially correct |
| 43 | Partially correct | 25 ms | 980 KB | Output is partially correct |
| 44 | Partially correct | 25 ms | 724 KB | Output is partially correct |
| 45 | Partially correct | 24 ms | 724 KB | Output is partially correct |
| 46 | Partially correct | 24 ms | 732 KB | Output is partially correct |
| 47 | Partially correct | 19 ms | 476 KB | Output is partially correct |
| 48 | Partially correct | 17 ms | 724 KB | Output is partially correct |
| 49 | Partially correct | 18 ms | 716 KB | Output is partially correct |
| 50 | Partially correct | 18 ms | 612 KB | Output is partially correct |
| 51 | Partially correct | 18 ms | 512 KB | Output is partially correct |
| 52 | Partially correct | 19 ms | 608 KB | Output is partially correct |
| 53 | Partially correct | 18 ms | 608 KB | Output is partially correct |
| 54 | Partially correct | 18 ms | 456 KB | Output is partially correct |
| 55 | Partially correct | 17 ms | 708 KB | Output is partially correct |
| 56 | Partially correct | 19 ms | 720 KB | Output is partially correct |
| 57 | Partially correct | 20 ms | 720 KB | Output is partially correct |
| 58 | Partially correct | 17 ms | 464 KB | Output is partially correct |
| 59 | Partially correct | 19 ms | 516 KB | Output is partially correct |
| 60 | Partially correct | 18 ms | 952 KB | Output is partially correct |
| 61 | Partially correct | 18 ms | 608 KB | Output is partially correct |
| 62 | Partially correct | 36 ms | 976 KB | Output is partially correct |
| 63 | Partially correct | 32 ms | 728 KB | Output is partially correct |
| 64 | Partially correct | 26 ms | 720 KB | Output is partially correct |
| 65 | Partially correct | 35 ms | 1220 KB | Output is partially correct |
| 66 | Partially correct | 28 ms | 708 KB | Output is partially correct |
| 67 | Partially correct | 23 ms | 956 KB | Output is partially correct |
| 68 | Partially correct | 32 ms | 720 KB | Output is partially correct |
| 69 | Partially correct | 31 ms | 472 KB | Output is partially correct |
| 70 | Partially correct | 26 ms | 708 KB | Output is partially correct |
| 71 | Partially correct | 31 ms | 632 KB | Output is partially correct |
| 72 | Partially correct | 34 ms | 712 KB | Output is partially correct |
| 73 | Partially correct | 34 ms | 468 KB | Output is partially correct |
| 74 | Partially correct | 28 ms | 724 KB | Output is partially correct |
| 75 | Partially correct | 23 ms | 1468 KB | Output is partially correct |
| 76 | Partially correct | 28 ms | 980 KB | Output is partially correct |
| 77 | Partially correct | 28 ms | 1232 KB | Output is partially correct |
| 78 | Partially correct | 40 ms | 692 KB | Output is partially correct |
| 79 | Partially correct | 29 ms | 964 KB | Output is partially correct |
| 80 | Partially correct | 24 ms | 464 KB | Output is partially correct |
| 81 | Partially correct | 23 ms | 720 KB | Output is partially correct |
| 82 | Partially correct | 25 ms | 724 KB | Output is partially correct |