oj.uz

Submission #848828

# Submission time Handle Problem Language Result Execution time Memory
848828 2023-09-13T14:44:21 Z Edu175 Longest Trip (IOI23_longesttrip) C++17
100 / 100
 10 ms 964 KB 
#include "longesttrip.h"
#include <bits/stdc++.h>
#define pb push_back
#define fst first
#define snd second
#define fore(i,a,b) for(ll i=a,ggdem=b;i<ggdem;++i)
#define SZ(x) ((int)x.size())
#define ALL(x) x.begin(),x.end()
#define mset(a,v) memset((a),(v),sizeof(a))
#define FIN ios::sync_with_stdio(0);cin.tie(0);cout.tie(0)
#define imp(v) for(auto messi:v)cout<<messi<<" "; cout<<"\n"
using namespace std;
typedef int ll;
typedef long long LL;
typedef pair<ll,ll> ii;
 
ll n,d;
ll ask(vector<ll>a, vector<ll>b){
	set<ll>sa,sb;
	for(auto i:a)sa.insert(i);
	for(auto i:b)sb.insert(i);
	a.clear(),b.clear();
	for(auto i:sa)a.pb(i);
	for(auto i:sb)b.pb(i);
	return are_connected(a,b);
}
ll find(vector<ll>&a,vector<ll>&b){
	/*vector<ll>pre;
	fore(i,0,SZ(a)){
		pre.pb(a[i]);
		if(ask(b,pre))return i;
	}*/
	ll l=0,r=SZ(a)-1;
	while(l<=r){
		ll m=(l+r)/2;
		vector<ll>pre;
		fore(i,0,m+1)pre.pb(a[i]);
		if(ask(b,pre))r=m-1;
		else l=m+1;
	}
	return l;
}
 
vector<ll> rot(vector<ll>a, ll d){ // <--
	ll n=SZ(a);
	vector<ll>ai(n);
	fore(i,0,n)ai[i]=a[(i+d)%n];
	return ai;
}
 
vector<int> longest_trip(int N, int D){
	n=N,d=D;
	vector<ll>P;
	fore(i,0,n)P.pb(i);
	//LL sd; srand((LL)&sd); 
	//srand(314159265);
	//random_shuffle(ALL(P));
	vector<vector<ll>>h;
	h.pb({P[0]});
	h.pb({P[1]});
	ll pr=-1;
	fore(i,2,n){
		ll x=P[i];
		if(pr==1){
			if(ask({h[0].back()},{x}))h[0].pb(x),pr=0;
			else h[1].pb(x),pr=1;
			continue;		
}
		if(ask({h[0].back()},{x}))h[0].pb(x),pr=0;
		else if(ask({h[1].back()},{x}))h[1].pb(x),pr=1;
		else {
			while(SZ(h[1]))h[0].pb(h[1].back()),h[1].pop_back();
			h[1]={x};
			pr=2;
		}
	}
	/*if(SZ(h[0])>SZ(h[1]))return h[0];
	else return h[1];*/
	//imp(h[0]); imp(h[1]);
	if(!ask({h[0][0],h[0].back()},{h[1][0],h[1].back()})){
		if(!ask(h[0],h[1])){
			if(SZ(h[0])>SZ(h[1]))return h[0];
			else return h[1];
		}
		ll x=find(h[0],h[1]);
		vector<ll>fi={h[0][x]};
		ll y=find(h[1],fi);
		h[0]=rot(h[0],x+1),h[1]=rot(h[1],y);
	}
	else if(ask({h[0].back()},{h[1][0]}));
	else if(ask({h[0].back()},{h[1].back()}))reverse(ALL(h[1]));
	else if(ask({h[0][0]},{h[1][0]}))reverse(ALL(h[0]));
	else /*if(ask({h[0][0]},{h[1].back()}))*/
		reverse(ALL(h[0])),reverse(ALL(h[1]));
	for(auto i:h[1])h[0].pb(i);
	h[1].clear();
	return h[0];
}

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 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 4 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 5 ms 672 KB Output is correct
5 Correct 5 ms 344 KB Output is correct
6 Correct 10 ms 344 KB Output is correct
7 Correct 7 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 4 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

Subtask #3
25.0 / 25.0

# 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 4 ms 344 KB Output is correct
5 Correct 4 ms 540 KB Output is correct
6 Correct 9 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 5 ms 344 KB Output is correct
10 Correct 5 ms 596 KB Output is correct
11 Correct 4 ms 344 KB Output is correct
12 Correct 4 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 8 ms 344 KB Output is correct
16 Correct 9 ms 340 KB Output is correct
17 Correct 6 ms 600 KB Output is correct
18 Correct 5 ms 344 KB Output is correct
19 Correct 6 ms 600 KB Output is correct
20 Correct 5 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 5 ms 344 KB Output is correct
24 Correct 5 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 6 ms 344 KB Output is correct
28 Correct 7 ms 344 KB Output is correct
29 Correct 6 ms 344 KB Output is correct
30 Correct 4 ms 436 KB Output is correct
31 Correct 6 ms 440 KB Output is correct
32 Correct 6 ms 432 KB Output is correct
33 Correct 5 ms 344 KB Output is correct
34 Correct 5 ms 344 KB Output is correct
35 Correct 5 ms 344 KB Output is correct
36 Correct 4 ms 344 KB Output is correct
37 Correct 6 ms 344 KB Output is correct
38 Correct 5 ms 340 KB Output is correct
39 Correct 6 ms 600 KB Output is correct
40 Correct 6 ms 344 KB Output is correct
41 Correct 5 ms 612 KB Output is correct
42 Correct 7 ms 600 KB Output is correct
43 Correct 6 ms 600 KB Output is correct
44 Correct 6 ms 344 KB Output is correct
45 Correct 9 ms 344 KB Output is correct
46 Correct 8 ms 344 KB Output is correct
47 Correct 7 ms 344 KB Output is correct
48 Correct 7 ms 344 KB Output is correct
49 Correct 7 ms 344 KB Output is correct
50 Correct 6 ms 436 KB Output is correct
51 Correct 7 ms 428 KB Output is correct
52 Correct 7 ms 432 KB Output is correct
53 Correct 6 ms 612 KB Output is correct
54 Correct 5 ms 856 KB Output is correct
55 Correct 6 ms 856 KB Output is correct
56 Correct 5 ms 708 KB Output is correct
57 Correct 6 ms 716 KB Output is correct
58 Correct 7 ms 872 KB Output is correct
59 Correct 7 ms 708 KB Output is correct
60 Correct 8 ms 872 KB Output is correct
61 Correct 7 ms 704 KB Output is correct
62 Correct 7 ms 468 KB Output is correct
63 Correct 7 ms 620 KB Output is correct
64 Correct 9 ms 456 KB Output is correct

Subtask #4
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 344 KB Output is correct
2 Correct 6 ms 344 KB Output is correct
3 Correct 4 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 8 ms 344 KB Output is correct
7 Correct 5 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 6 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 4 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 7 ms 504 KB Output is correct
17 Correct 6 ms 436 KB Output is correct
18 Correct 6 ms 344 KB Output is correct
19 Correct 5 ms 600 KB Output is correct
20 Correct 5 ms 344 KB Output is correct
21 Correct 7 ms 344 KB Output is correct
22 Correct 8 ms 344 KB Output is correct
23 Correct 7 ms 344 KB Output is correct
24 Correct 5 ms 344 KB Output is correct
25 Correct 6 ms 344 KB Output is correct
26 Correct 5 ms 440 KB Output is correct
27 Correct 5 ms 436 KB Output is correct
28 Correct 6 ms 436 KB Output is correct
29 Correct 5 ms 344 KB Output is correct
30 Correct 6 ms 344 KB Output is correct
31 Correct 5 ms 344 KB Output is correct
32 Correct 9 ms 388 KB Output is correct
33 Correct 9 ms 344 KB Output is correct
34 Correct 7 ms 344 KB Output is correct
35 Correct 8 ms 344 KB Output is correct
36 Correct 6 ms 344 KB Output is correct
37 Correct 6 ms 692 KB Output is correct
38 Correct 7 ms 544 KB Output is correct
39 Correct 7 ms 436 KB Output is correct
40 Correct 5 ms 444 KB Output is correct
41 Correct 5 ms 856 KB Output is correct
42 Correct 7 ms 600 KB Output is correct
43 Correct 6 ms 596 KB Output is correct
44 Correct 5 ms 344 KB Output is correct
45 Correct 5 ms 344 KB Output is correct
46 Correct 5 ms 344 KB Output is correct
47 Correct 5 ms 600 KB Output is correct
48 Correct 5 ms 344 KB Output is correct
49 Correct 5 ms 852 KB Output is correct
50 Correct 6 ms 596 KB Output is correct
51 Correct 6 ms 344 KB Output is correct
52 Correct 6 ms 600 KB Output is correct
53 Correct 6 ms 344 KB Output is correct
54 Correct 5 ms 344 KB Output is correct
55 Correct 5 ms 344 KB Output is correct
56 Correct 5 ms 344 KB Output is correct
57 Correct 5 ms 344 KB Output is correct
58 Correct 6 ms 344 KB Output is correct
59 Correct 7 ms 600 KB Output is correct
60 Correct 7 ms 344 KB Output is correct
61 Correct 6 ms 444 KB Output is correct
62 Correct 7 ms 616 KB Output is correct
63 Correct 7 ms 876 KB Output is correct
64 Correct 6 ms 876 KB Output is correct
65 Correct 7 ms 712 KB Output is correct
66 Correct 7 ms 872 KB Output is correct
67 Correct 6 ms 456 KB Output is correct
68 Correct 7 ms 872 KB Output is correct
69 Correct 8 ms 872 KB Output is correct
70 Correct 7 ms 620 KB Output is correct
71 Correct 7 ms 448 KB Output is correct
72 Correct 7 ms 716 KB Output is correct
73 Correct 8 ms 624 KB Output is correct
74 Correct 7 ms 688 KB Output is correct
75 Correct 7 ms 964 KB Output is correct
76 Correct 8 ms 620 KB Output is correct
77 Correct 8 ms 876 KB Output is correct
78 Correct 6 ms 960 KB Output is correct
79 Correct 7 ms 708 KB Output is correct
80 Correct 7 ms 452 KB Output is correct
81 Correct 8 ms 712 KB Output is correct
82 Correct 7 ms 712 KB Output is correct