oj.uz

Submission #1069037

# Submission time Handle Problem Language Result Execution time Memory
1069037 2024-08-21T15:02:52 Z Malix Longest Trip (IOI23_longesttrip) C++17
85 / 100
 11 ms 600 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-1){
        a.clear();b.clear();
        a.PB(x.back());b.PB(pos);
        if(are_connected(a,b)){
            a.clear();b.clear();
            a.PB(y.back());b.PB(pos+1);
            if(are_connected(a,b)){
                x.PB(pos);
                y.PB(pos+1);
                a.clear();b.clear();
                a.PB(pos);b.PB(pos+1);
                if(are_connected(a,b)){
                    reverse(y.begin(),y.end());
                    for(auto u:y)x.PB(u);
                    y.clear();
                    int tmp=solve(x.back(),pos+2,n);
                    REP(i,pos+2,tmp)x.PB(i);
                    if(tmp==n)return x;
                    y.PB(tmp);
                    pos=tmp+1;
                }
                else pos+=2;
            }
            else{
                a.clear();b.clear();
                a.PB(pos);b.PB(pos+1);
                if(are_connected(a,b)){
                    x.PB(pos);
                    x.PB(pos+1);
                    pos+=2;
                }
                else{
                    x.PB(pos+1);
                    y.PB(pos);
                    pos+=2;
                } 
            }
        }
        else{
            y.PB(pos);pos++;
        } 
    }
    if(pos<n){
        a.clear();b.clear();
        a.PB(pos);b.PB(x.back());
        if(are_connected(a,b))x.PB(pos);
        else y.PB(pos);
    }
    if((int)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;
}

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 0 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 2 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 420 KB Output is correct
5 Correct 1 ms 344 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 344 KB Output is correct
2 Correct 6 ms 348 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 7 ms 344 KB Output is correct
7 Correct 5 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 6 ms 596 KB Output is correct
11 Correct 5 ms 344 KB Output is correct
12 Correct 5 ms 596 KB Output is correct
13 Correct 5 ms 344 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 344 KB Output is correct
2 Correct 7 ms 344 KB Output is correct
3 Correct 6 ms 344 KB Output is correct
4 Correct 5 ms 344 KB Output is correct
5 Correct 6 ms 344 KB Output is correct
6 Correct 8 ms 344 KB Output is correct
7 Correct 4 ms 344 KB Output is correct
8 Correct 5 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 5 ms 344 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 5 ms 344 KB Output is correct
14 Correct 8 ms 344 KB Output is correct
15 Correct 7 ms 344 KB Output is correct
16 Correct 7 ms 344 KB Output is correct
17 Correct 5 ms 344 KB Output is correct
18 Correct 7 ms 344 KB Output is correct
19 Correct 5 ms 600 KB Output is correct
20 Correct 6 ms 344 KB Output is correct
21 Correct 6 ms 344 KB Output is correct
22 Correct 5 ms 344 KB Output is correct
23 Correct 6 ms 436 KB Output is correct
24 Correct 6 ms 344 KB Output is correct
25 Correct 6 ms 344 KB Output is correct
26 Correct 6 ms 344 KB Output is correct
27 Correct 7 ms 344 KB Output is correct
28 Correct 7 ms 344 KB Output is correct
29 Correct 5 ms 344 KB Output is correct
30 Correct 6 ms 344 KB Output is correct
31 Correct 6 ms 344 KB Output is correct
32 Correct 6 ms 344 KB Output is correct
33 Correct 6 ms 344 KB Output is correct
34 Correct 7 ms 344 KB Output is correct
35 Correct 5 ms 344 KB Output is correct
36 Correct 8 ms 344 KB Output is correct
37 Correct 7 ms 344 KB Output is correct
38 Correct 7 ms 344 KB Output is correct
39 Correct 10 ms 344 KB Output is correct
40 Correct 8 ms 344 KB Output is correct
41 Correct 7 ms 344 KB Output is correct
42 Correct 6 ms 344 KB Output is correct
43 Correct 6 ms 344 KB Output is correct
44 Correct 7 ms 344 KB Output is correct
45 Correct 9 ms 344 KB Output is correct
46 Correct 6 ms 344 KB Output is correct
47 Correct 9 ms 344 KB Output is correct
48 Correct 8 ms 344 KB Output is correct
49 Correct 8 ms 344 KB Output is correct
50 Correct 6 ms 344 KB Output is correct
51 Correct 8 ms 344 KB Output is correct
52 Correct 8 ms 344 KB Output is correct
53 Correct 11 ms 344 KB Output is correct
54 Correct 7 ms 348 KB Output is correct
55 Correct 10 ms 344 KB Output is correct
56 Correct 5 ms 344 KB Output is correct
57 Correct 7 ms 348 KB Output is correct
58 Correct 5 ms 344 KB Output is correct
59 Correct 10 ms 344 KB Output is correct
60 Correct 6 ms 344 KB Output is correct
61 Correct 7 ms 344 KB Output is correct
62 Correct 7 ms 344 KB Output is correct
63 Correct 7 ms 440 KB Output is correct
64 Correct 6 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 348 KB Output is correct
4 Correct 7 ms 348 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 10 ms 344 KB Output is correct
7 Correct 6 ms 344 KB Output is correct
8 Correct 5 ms 344 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 344 KB Output is correct
12 Correct 5 ms 344 KB Output is correct
13 Correct 5 ms 344 KB Output is correct
14 Correct 7 ms 344 KB Output is correct
15 Correct 7 ms 344 KB Output is correct
16 Correct 7 ms 344 KB Output is correct
17 Correct 5 ms 344 KB Output is correct
18 Correct 6 ms 436 KB Output is correct
19 Correct 6 ms 344 KB Output is correct
20 Correct 6 ms 436 KB Output is correct
21 Correct 7 ms 344 KB Output is correct
22 Correct 7 ms 344 KB Output is correct
23 Correct 6 ms 344 KB Output is correct
24 Correct 5 ms 340 KB Output is correct
25 Correct 7 ms 344 KB Output is correct
26 Correct 5 ms 344 KB Output is correct
27 Correct 7 ms 344 KB Output is correct
28 Correct 5 ms 344 KB Output is correct
29 Correct 7 ms 344 KB Output is correct
30 Correct 6 ms 344 KB Output is correct
31 Correct 7 ms 344 KB Output is correct
32 Correct 9 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 596 KB Output is correct
36 Correct 8 ms 344 KB Output is correct
37 Correct 7 ms 344 KB Output is correct
38 Correct 7 ms 344 KB Output is correct
39 Correct 8 ms 344 KB Output is correct
40 Correct 9 ms 344 KB Output is correct
41 Correct 8 ms 344 KB Output is correct
42 Correct 11 ms 344 KB Output is correct
43 Correct 8 ms 344 KB Output is correct
44 Correct 8 ms 440 KB Output is correct
45 Correct 7 ms 344 KB Output is correct
46 Correct 4 ms 344 KB Output is correct
47 Correct 6 ms 344 KB Output is correct
48 Correct 6 ms 344 KB Output is correct
49 Correct 7 ms 344 KB Output is correct
50 Correct 7 ms 344 KB Output is correct
51 Correct 7 ms 344 KB Output is correct
52 Correct 7 ms 344 KB Output is correct
53 Correct 5 ms 344 KB Output is correct
54 Correct 7 ms 344 KB Output is correct
55 Correct 6 ms 344 KB Output is correct
56 Correct 8 ms 344 KB Output is correct
57 Correct 6 ms 344 KB Output is correct
58 Correct 5 ms 344 KB Output is correct
59 Correct 8 ms 344 KB Output is correct
60 Correct 5 ms 344 KB Output is correct
61 Correct 7 ms 344 KB Output is correct
62 Correct 6 ms 344 KB Output is correct
63 Correct 7 ms 344 KB Output is correct
64 Correct 7 ms 344 KB Output is correct
65 Correct 7 ms 344 KB Output is correct
66 Correct 7 ms 344 KB Output is correct
67 Correct 7 ms 344 KB Output is correct
68 Correct 7 ms 344 KB Output is correct
69 Correct 7 ms 436 KB Output is correct
70 Correct 8 ms 344 KB Output is correct
71 Partially correct 11 ms 344 KB Output is partially correct
72 Correct 7 ms 344 KB Output is correct
73 Correct 7 ms 344 KB Output is correct
74 Correct 6 ms 344 KB Output is correct
75 Correct 10 ms 344 KB Output is correct
76 Correct 5 ms 344 KB Output is correct
77 Correct 6 ms 344 KB Output is correct
78 Correct 9 ms 344 KB Output is correct
79 Correct 8 ms 344 KB Output is correct
80 Correct 7 ms 344 KB Output is correct
81 Correct 7 ms 344 KB Output is correct
82 Correct 7 ms 344 KB Output is correct