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Submission #1069005

# Submission time Handle Problem Language Result Execution time Memory
1069005 2024-08-21T14:23:49 Z Malix Longest Trip (IOI23_longesttrip) C++17
85 / 100
 16 ms 692 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vii;
typedef pair<int,int> pi;
typedef vector<pi> pii;
typedef tuple<int,int,int> tii;
typedef vector<ll> li;
typedef vector<li> lii;
 
#define REP(i,a,b) for(int i=a;i<b;i++)
#define F first
#define S second
#define PB push_back
#define MP make_pair
#define LSOne(s) ((s)&(-s))
 
ll INF=1e18+10;
int inf=1e9+10;
ll M=1e9+7;

int solve(int bk,int p,int n){
    vi a,b,x;
    x.PB(bk);
    REP(i,p,n){
        a.clear();
        a.PB(x.back());
        b.clear();
        b.PB(i);
        if(are_connected(a,b))x.PB(i);
        else return i;
    }
    return n;
}

pi BS(int l,int r,int x,int y,vi &arr,vi &brr){
    if(l==r&&x==y)return {l,x};
    int m=(l+r)/2;
    int z=(x+y)/2;
    vi a,b;
    REP(i,l,m+1)a.PB(arr[i]);
    REP(i,x,y+1)b.PB(brr[i]);
    if(are_connected(a,b))r=m;
    else l=m+1;
    a.clear();b.clear();
    REP(i,l,r+1)a.PB(arr[i]);
    REP(i,x,z+1)b.PB(brr[i]);
    if(are_connected(a,b))y=z;
    else x=z+1;
    return BS(l,r,x,y,arr,brr);
}

std::vector<int> longest_trip(int n, int d)
{
    if(d==3){
        vi ans;
        REP(i,0,n)ans.PB(i);
        return ans;
    }
    if(d==2){
        deque<int> dq;
        vi a,b;
        a.PB(0);b.PB(1);
        if(are_connected(a,b)){
            dq.PB(0);
            dq.PB(1);
            b.pop_back();b.PB(2);
            if(are_connected(a,b))dq.push_front(2);
            else dq.push_back(2);
        }
        else{
            dq.PB(0);
            dq.PB(2);
            dq.PB(1);
        }
        REP(i,3,n){
            a.clear();b.clear();
            a.PB(dq.back());b.PB(i);
            if(are_connected(a,b))dq.push_back(i);
            else dq.push_front(i);
        }
        vi ans;
        REP(i,0,n){
            ans.PB(dq.front());
            dq.pop_front();
        }
        return ans;
    }
    vi a,b,x,y;
    x.PB(0);
    int tm=solve(0,1,n);
    REP(i,1,tm)x.PB(i);
    if(tm!=n)y.PB(tm);
    if(y.empty())return x;
    int pos=tm+1;
    while(pos<n){
        a.clear();b.clear();
        a.PB(x.back());b.PB(pos);
        bool f1=are_connected(a,b);
        a.clear();b.clear();
        a.PB(y.back());b.PB(pos);
        bool f2=are_connected(a,b);
        if(f1&&f2){
            x.PB(pos);
            reverse(y.begin(),y.end());
            for(auto u:y)x.PB(u);
            y.clear();
            int tmp=solve(x.back(),pos+1,n);
            REP(i,pos+1,tmp)x.PB(i);
            if(tmp==n)return x;
            y.PB(tmp);
            pos=tmp+1;
        }
        else if(f1){
            x.PB(pos);
            pos++;
        }
        else if(f2){
            y.PB(pos);
            pos++;
        }
        else{
            reverse(y.begin(),y.end());
            for(auto u:y)x.PB(u);
            y.clear();
            int tmp=solve(x.back(),pos,n);
            REP(i,pos,tmp)x.PB(i);
            if(tmp==n)return x;
            y.PB(tmp);
            pos=tmp+1;
        }
    }
    if(x.size()==n)return x;
    if(!are_connected(x,y)){
        if(x.size()>=y.size())return x;
        else return y;
    }
    a.clear();b.clear();
    a.PB(x.front());b.PB(y.front());
    if(are_connected(a,b)){
        reverse(x.begin(),x.end());
        for(auto u:y)x.PB(u);
        return x;
    }
    a.clear();b.clear();
    a.PB(x.front());b.PB(y.back());
    if(are_connected(a,b)){
        reverse(x.begin(),x.end());
        reverse(y.begin(),y.end());
        for(auto u:y)x.PB(u);
        return x;
    }
    a.clear();b.clear();
    a.PB(x.back());b.PB(y.front());
    if(are_connected(a,b)){
        for(auto u:y)x.PB(u);
        return x;
    }
    a.clear();b.clear();
    a.PB(x.back());b.PB(y.back());
    if(are_connected(a,b)){
        reverse(y.begin(),y.end());
        for(auto u:y)x.PB(u);
        return x;
    }
    int s1=x.size(),s2=y.size();
    pi arr=BS(0,s1-1,0,s2-1,x,y);
    vi ans;
    REP(k,arr.F+1,s1)ans.PB(x[k]);
    REP(k,0,arr.F+1)ans.PB(x[k]);
    REP(k,arr.S,s2)ans.PB(y[k]);
    REP(k,0,arr.S)ans.PB(y[k]);
    return ans;
}

Compilation message

longesttrip.cpp: In function 'std::vector<int> longest_trip(int, int)':
longesttrip.cpp:136:16: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
  136 |     if(x.size()==n)return x;
      |        ~~~~~~~~^~~

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 2 ms 344 KB Output is correct

Subtask #1
5.0 / 5.0

# 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 0 ms 344 KB Output is correct
5 Correct 0 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 7 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 6 ms 344 KB Output is correct
5 Correct 6 ms 344 KB Output is correct
6 Correct 5 ms 344 KB Output is correct
7 Correct 8 ms 344 KB Output is correct
8 Correct 7 ms 344 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 7 ms 344 KB Output is correct
11 Correct 7 ms 344 KB Output is correct
12 Correct 8 ms 440 KB Output is correct
13 Correct 5 ms 596 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 7 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 9 ms 344 KB Output is correct
7 Correct 6 ms 344 KB Output is correct
8 Correct 8 ms 344 KB Output is correct
9 Correct 5 ms 344 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 8 ms 436 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 6 ms 344 KB Output is correct
14 Correct 7 ms 340 KB Output is correct
15 Correct 8 ms 344 KB Output is correct
16 Correct 13 ms 344 KB Output is correct
17 Correct 5 ms 344 KB Output is correct
18 Correct 5 ms 344 KB Output is correct
19 Correct 6 ms 432 KB Output is correct
20 Correct 10 ms 344 KB Output is correct
21 Correct 6 ms 344 KB Output is correct
22 Correct 8 ms 440 KB Output is correct
23 Correct 9 ms 344 KB Output is correct
24 Correct 7 ms 600 KB Output is correct
25 Correct 10 ms 344 KB Output is correct
26 Correct 11 ms 344 KB Output is correct
27 Correct 12 ms 344 KB Output is correct
28 Correct 15 ms 344 KB Output is correct
29 Correct 9 ms 344 KB Output is correct
30 Correct 7 ms 344 KB Output is correct
31 Correct 10 ms 344 KB Output is correct
32 Correct 10 ms 344 KB Output is correct
33 Correct 7 ms 344 KB Output is correct
34 Correct 8 ms 344 KB Output is correct
35 Correct 8 ms 344 KB Output is correct
36 Correct 9 ms 344 KB Output is correct
37 Correct 15 ms 344 KB Output is correct
38 Correct 11 ms 344 KB Output is correct
39 Correct 9 ms 344 KB Output is correct
40 Correct 9 ms 344 KB Output is correct
41 Correct 7 ms 344 KB Output is correct
42 Correct 10 ms 344 KB Output is correct
43 Correct 8 ms 444 KB Output is correct
44 Correct 11 ms 596 KB Output is correct
45 Correct 6 ms 344 KB Output is correct
46 Correct 9 ms 344 KB Output is correct
47 Correct 9 ms 344 KB Output is correct
48 Correct 7 ms 344 KB Output is correct
49 Correct 11 ms 344 KB Output is correct
50 Correct 10 ms 344 KB Output is correct
51 Correct 10 ms 432 KB Output is correct
52 Correct 12 ms 344 KB Output is correct
53 Correct 9 ms 344 KB Output is correct
54 Correct 12 ms 344 KB Output is correct
55 Correct 11 ms 344 KB Output is correct
56 Correct 9 ms 344 KB Output is correct
57 Correct 10 ms 344 KB Output is correct
58 Correct 13 ms 344 KB Output is correct
59 Correct 10 ms 344 KB Output is correct
60 Correct 13 ms 344 KB Output is correct
61 Correct 12 ms 600 KB Output is correct
62 Correct 12 ms 344 KB Output is correct
63 Correct 13 ms 344 KB Output is correct
64 Correct 12 ms 344 KB Output is correct

Subtask #4
45.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 5 ms 344 KB Output is correct
3 Correct 5 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 6 ms 344 KB Output is correct
7 Correct 6 ms 344 KB Output is correct
8 Correct 7 ms 504 KB Output is correct
9 Correct 4 ms 344 KB Output is correct
10 Correct 5 ms 344 KB Output is correct
11 Correct 5 ms 600 KB Output is correct
12 Correct 6 ms 344 KB Output is correct
13 Correct 8 ms 344 KB Output is correct
14 Correct 8 ms 344 KB Output is correct
15 Correct 8 ms 344 KB Output is correct
16 Correct 8 ms 344 KB Output is correct
17 Correct 9 ms 344 KB Output is correct
18 Correct 6 ms 344 KB Output is correct
19 Correct 12 ms 600 KB Output is correct
20 Correct 6 ms 432 KB Output is correct
21 Correct 9 ms 344 KB Output is correct
22 Correct 10 ms 344 KB Output is correct
23 Correct 9 ms 344 KB Output is correct
24 Correct 8 ms 344 KB Output is correct
25 Correct 9 ms 344 KB Output is correct
26 Correct 8 ms 344 KB Output is correct
27 Correct 14 ms 344 KB Output is correct
28 Correct 10 ms 344 KB Output is correct
29 Correct 12 ms 344 KB Output is correct
30 Correct 11 ms 344 KB Output is correct
31 Correct 7 ms 344 KB Output is correct
32 Correct 11 ms 344 KB Output is correct
33 Correct 8 ms 344 KB Output is correct
34 Correct 9 ms 344 KB Output is correct
35 Correct 11 ms 344 KB Output is correct
36 Correct 9 ms 344 KB Output is correct
37 Correct 8 ms 440 KB Output is correct
38 Correct 12 ms 344 KB Output is correct
39 Correct 10 ms 344 KB Output is correct
40 Correct 6 ms 344 KB Output is correct
41 Correct 10 ms 344 KB Output is correct
42 Correct 16 ms 344 KB Output is correct
43 Correct 6 ms 344 KB Output is correct
44 Correct 6 ms 344 KB Output is correct
45 Correct 8 ms 344 KB Output is correct
46 Correct 6 ms 348 KB Output is correct
47 Partially correct 8 ms 344 KB Output is partially correct
48 Partially correct 13 ms 344 KB Output is partially correct
49 Partially correct 9 ms 344 KB Output is partially correct
50 Partially correct 8 ms 344 KB Output is partially correct
51 Partially correct 10 ms 344 KB Output is partially correct
52 Partially correct 7 ms 344 KB Output is partially correct
53 Partially correct 7 ms 344 KB Output is partially correct
54 Partially correct 9 ms 344 KB Output is partially correct
55 Partially correct 13 ms 344 KB Output is partially correct
56 Partially correct 13 ms 596 KB Output is partially correct
57 Partially correct 10 ms 344 KB Output is partially correct
58 Partially correct 7 ms 344 KB Output is partially correct
59 Partially correct 12 ms 432 KB Output is partially correct
60 Partially correct 15 ms 344 KB Output is partially correct
61 Partially correct 15 ms 344 KB Output is partially correct
62 Correct 6 ms 340 KB Output is correct
63 Partially correct 13 ms 692 KB Output is partially correct
64 Partially correct 15 ms 600 KB Output is partially correct
65 Partially correct 10 ms 344 KB Output is partially correct
66 Partially correct 9 ms 344 KB Output is partially correct
67 Partially correct 14 ms 344 KB Output is partially correct
68 Partially correct 11 ms 344 KB Output is partially correct
69 Partially correct 10 ms 444 KB Output is partially correct
70 Partially correct 9 ms 344 KB Output is partially correct
71 Partially correct 9 ms 344 KB Output is partially correct
72 Partially correct 8 ms 344 KB Output is partially correct
73 Partially correct 8 ms 344 KB Output is partially correct
74 Partially correct 12 ms 344 KB Output is partially correct
75 Partially correct 13 ms 344 KB Output is partially correct
76 Partially correct 10 ms 344 KB Output is partially correct
77 Partially correct 15 ms 344 KB Output is partially correct
78 Partially correct 10 ms 344 KB Output is partially correct
79 Partially correct 9 ms 344 KB Output is partially correct
80 Partially correct 7 ms 344 KB Output is partially correct
81 Partially correct 11 ms 340 KB Output is partially correct
82 Partially correct 11 ms 344 KB Output is partially correct