oj.uz

Submission #841132

# Submission time Handle Problem Language Result Execution time Memory
841132 2023-09-01T09:33:00 Z MrBrionix Longest Trip (IOI23_longesttrip) C++17
85 / 100
 18 ms 700 KB 
#pragma GCC optimize("O3")
#include<bits/stdc++.h>
using namespace std;

bool are_connected(std::vector<int> A, std::vector<int> B);

void add(vector<int> &a,vector<int> &b){
    reverse(a.begin(),a.end());
    for(auto i : b)a.push_back(i);
}

bool query(vector<int> &a,vector<int> &b,int l1,int r1,int l2,int r2){
    vector<int> tmp1,tmp2;
    for(int i=l1;i<=r1;i++)tmp1.push_back(a[i]);
    for(int i=l2;i<=r2;i++)tmp2.push_back(b[i]);
    
    return are_connected(tmp1,tmp2);
}

bool comp1(vector<int> &a,vector<int> &b){
    return a.size()<b.size();
}

bool comp2(vector<int> &a,vector<int> &b){
    return a.size()>b.size();
}

mt19937 rng((uint64_t) chrono::duration_cast<chrono::
    nanoseconds>(chrono::high_resolution_clock::now()
        .time_since_epoch()).count());

vector<int> longest_trip(int N, int D)
{
    srand(time(NULL));
    deque<vector<int>> q;
    
    
    for(int i=0;i<N;i++){
        q.push_back({i});
    }
    shuffle(q.begin(),q.end(),rng);
    
    int cont=0;
    /*
    while(q.size()>3){
        
        //shuffle(q.begin(),q.end(),rng);
        sort(q.begin(),q.end(),comp1);
        shuffle(q.begin(),q.begin()+4,rng);
        auto a = q.front();
        q.pop_front();
        auto b = q.front();
        q.pop_front();
        auto c = q.front();
        q.pop_front();
        auto d = q.front();
        q.pop_front();
        
        
        if(!are_connected({*a.begin(),*b.begin()},{*c.begin(),*d.begin()})){
            add(a,b);
            add(c,d);
            q.push_back(a);
            q.push_back(c);
            continue;
        }
        
        if(!are_connected({*a.begin()},{*c.begin(),*d.begin()})){
            add(c,d);
            q.push_back(a);
            q.push_back(b);
            q.push_back(c);
            continue;
        }
        
        if(are_connected({*a.begin()},{*c.begin()})){
            add(a,c);
            q.push_back(a);
            q.push_back(b);
            q.push_back(d);
            continue;
        }
        
        add(a,d);
        q.push_back(a);
        q.push_back(b);
        q.push_back(c);
    }
     */
    while(q.size()>2){
        
        shuffle(q.begin()+1,q.end(),rng);
        //sort(q.begin(),q.end(),comp1);
        //sort(q.begin()+1,q.end(),comp2);
        //shuffle(q.begin()+1,q.begin()+3,rng);
        auto a = q.front();
        q.pop_front();
        auto b = q.front();
        q.pop_front();
        auto c = q.front();
        q.pop_front();
        
        //if(rng()%2)reverse(a.begin(),a.end());
        if(rng()%2)reverse(b.begin(),b.end());
        if(rng()%2)reverse(c.begin(),c.end());
        
        swap(a,c);
        
        if(are_connected({*a.begin()},{*b.begin()})){
            add(a,b);
            q.push_back(a);
            q.push_front(c);
            cont++;
        }else if(are_connected({*a.begin()},{*c.begin()})){
            add(a,c);
            q.push_back(a);
            q.push_front(b);
            cont+=2;
        }else{
            add(b,c);
            q.push_back(b);
            q.push_front(a);
            cont+=2;
        }
    }
    
    
    //assert(cont<410);
    auto a = q.front();
    q.pop_front();
    auto b = q.front();
    q.pop_front();
    
    if(!are_connected(a,b)){
        if(a.size()>b.size())return a;
        else return b;
    }else{
        int l1 = *a.begin(), r1 = a.back();
        int l2 = *b.begin(), r2 = b.back();
        
        if(are_connected({l1},{l2})){
            add(a,b);
            return a;
        }
        if(are_connected({l1},{r2})){
            reverse(b.begin(),b.end());
            add(a,b);
            return a;
        }
        if(are_connected({l2},{r1})){
            reverse(a.begin(),a.end());
            add(a,b);
            return a;
        }
        
        
        int low = -1, up = a.size()-1;
        
        while(up-low>1){
            int mid = (up+low)/2;
            
            if(query(a,b,0,mid,0,b.size()-1)){
                up=mid;
            }else{
                low=mid;
            }
        }
        
        int ind = up;
        
        low = -1, up = b.size()-1;
        while(up-low>1){
            int mid = (up+low)/2;
            
            if(query(a,b,ind,ind,0,mid)){
                up=mid;
            }else{
                low=mid;
            }
        }
        
        
        for(int i=0;i<ind;i++){
            a.push_back(*a.begin());
            a.erase(a.begin());
        }
        
        for(int i=0;i<up;i++){
            b.push_back(*b.begin());
            b.erase(b.begin());
        }
        
        add(a,b);
        return a;
    }
}

/*
  1
  5 1
  1
  1 1
  0 0 1
  0 0 0 1
  
  static inline constexpr int maxNumberOfCalls = 32640;
  static inline constexpr int maxTotalNumberOfCalls = 150000;
  static inline constexpr int maxTotalNumberOfLandmarksInCalls = 1500000;
  static int call_counter = 0;
  static int total_call_counter = 0;
  static int landmark_counter = 0;
  
  static int C, N, D;
  static std::vector<std::vector<int>> U;
  static std::vector<bool> present;
  
  static inline void protocol_violation(std::string message)
  {
  printf("Protocol Violation: %s\n", message.c_str());
  exit(0);
  }
  
  bool are_connected(std::vector<int> A, std::vector<int> B)
  {
  ++call_counter;
  ++total_call_counter;
  if (call_counter > maxNumberOfCalls || total_call_counter > maxTotalNumberOfCalls)
  {
  protocol_violation("too many calls");
  }
  
  int nA = A.size(), nB = B.size();
  landmark_counter += nA + nB;
  if (landmark_counter > maxTotalNumberOfLandmarksInCalls)
  {
  protocol_violation("too many elements");
  }
  
  if (nA == 0 || nB == 0)
  {
  protocol_violation("invalid array");
  }
  for (int i = 0; i < nA; ++i)
  {
  if (A[i] < 0 || N <= A[i])
  {
  protocol_violation("invalid array");
  }
  if (present[A[i]])
  {
  protocol_violation("invalid array");
  }
  present[A[i]] = true;
  }
  for (int i = 0; i < nA; ++i)
  {
  present[A[i]] = false;
  }
  for (int i = 0; i < nB; ++i)
  {
  if (B[i] < 0 || N <= B[i])
  {
  protocol_violation("invalid array");
  }
  if (present[B[i]])
  {
  protocol_violation("invalid array");
  }
  present[B[i]] = true;
  }
  for (int i = 0; i < nB; ++i)
  {
  present[B[i]] = false;
  }
  
  for (int i = 0; i < nA; ++i)
  {
  for (int j = 0; j < nB; ++j)
  {
  if (A[i] == B[j])
  {
  protocol_violation("non-disjoint arrays");
  }
  }
  }
  
  for (int i = 0; i < nA; ++i)
  {
  for (int j = 0; j < nB; ++j)
  {
  if (U[std::max(A[i], B[j])][std::min(A[i], B[j])] == 1)
  {
  return true;
  }
  }
  }
  
  return false;
  }
  
  
  int main()
  {
  assert(1 == scanf("%d", &C));
  int maximumCalls = 0;
  for (int c = 0; c < C; ++c)
  {
  call_counter = 0;
  assert(2 == scanf("%d %d", &N, &D));
  
  present.assign(N, false);
  U.resize(N);
  for (int i = 1; i < N; ++i)
  {
  U[i].resize(i);
  for (int j = 0; j < i; ++j)
  {
  assert(1 == scanf("%d", &U[i][j]));
  }
  }
  
  for (int i = 2; i < N; ++i)
  {
  for (int j = 1; j < i; ++j)
  {
  for (int k = 0; k < j; ++k)
  {
  if (U[i][j] + U[i][k] + U[j][k] < D)
  {
  printf("Insufficient Density\n");
  exit(0);
  }
  }
  }
  }
  
  std::vector<int> t = longest_trip(N, D);
  int l = t.size();
  printf("%d\n", l);
  for (int i = 0; i < l; ++i)
  {
  printf(i == 0 ? "%d" : " %d", t[i]);
  }
  printf("\n");
  printf("%d chiamate\n", call_counter);
  
  maximumCalls = std::max(maximumCalls, call_counter);
  call_counter = 0;
  }
  printf("%d max chiamate\n", maximumCalls);
  
  return 0;
  }
 */

Subtask #0
0.0 / 0.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 4 ms 320 KB Output is correct

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 208 KB Output is correct
2 Correct 8 ms 208 KB Output is correct
3 Correct 8 ms 208 KB Output is correct
4 Correct 9 ms 208 KB Output is correct
5 Correct 11 ms 320 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 208 KB Output is correct
2 Correct 9 ms 208 KB Output is correct
3 Correct 7 ms 208 KB Output is correct
4 Correct 11 ms 324 KB Output is correct
5 Correct 12 ms 348 KB Output is correct
6 Correct 15 ms 208 KB Output is correct
7 Correct 9 ms 208 KB Output is correct
8 Correct 5 ms 208 KB Output is correct
9 Correct 5 ms 336 KB Output is correct
10 Correct 9 ms 336 KB Output is correct
11 Correct 10 ms 336 KB Output is correct
12 Correct 10 ms 336 KB Output is correct
13 Correct 10 ms 448 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 208 KB Output is correct
2 Correct 10 ms 208 KB Output is correct
3 Correct 9 ms 208 KB Output is correct
4 Correct 6 ms 308 KB Output is correct
5 Correct 8 ms 340 KB Output is correct
6 Correct 11 ms 208 KB Output is correct
7 Correct 10 ms 208 KB Output is correct
8 Correct 8 ms 312 KB Output is correct
9 Correct 8 ms 324 KB Output is correct
10 Correct 12 ms 336 KB Output is correct
11 Correct 9 ms 348 KB Output is correct
12 Correct 9 ms 336 KB Output is correct
13 Correct 12 ms 336 KB Output is correct
14 Correct 10 ms 208 KB Output is correct
15 Correct 13 ms 208 KB Output is correct
16 Correct 13 ms 208 KB Output is correct
17 Correct 13 ms 208 KB Output is correct
18 Correct 9 ms 208 KB Output is correct
19 Correct 11 ms 208 KB Output is correct
20 Correct 13 ms 328 KB Output is correct
21 Correct 13 ms 328 KB Output is correct
22 Correct 13 ms 336 KB Output is correct
23 Correct 11 ms 344 KB Output is correct
24 Correct 10 ms 336 KB Output is correct
25 Correct 10 ms 208 KB Output is correct
26 Correct 9 ms 208 KB Output is correct
27 Correct 8 ms 208 KB Output is correct
28 Correct 7 ms 208 KB Output is correct
29 Correct 10 ms 208 KB Output is correct
30 Correct 11 ms 312 KB Output is correct
31 Correct 12 ms 308 KB Output is correct
32 Correct 16 ms 308 KB Output is correct
33 Correct 6 ms 312 KB Output is correct
34 Correct 10 ms 320 KB Output is correct
35 Correct 9 ms 208 KB Output is correct
36 Correct 9 ms 348 KB Output is correct
37 Correct 8 ms 336 KB Output is correct
38 Correct 11 ms 336 KB Output is correct
39 Correct 17 ms 448 KB Output is correct
40 Correct 15 ms 336 KB Output is correct
41 Correct 18 ms 208 KB Output is correct
42 Correct 12 ms 208 KB Output is correct
43 Correct 14 ms 316 KB Output is correct
44 Correct 16 ms 328 KB Output is correct
45 Correct 11 ms 208 KB Output is correct
46 Correct 16 ms 208 KB Output is correct
47 Correct 8 ms 208 KB Output is correct
48 Correct 12 ms 208 KB Output is correct
49 Correct 12 ms 208 KB Output is correct
50 Correct 8 ms 208 KB Output is correct
51 Correct 7 ms 312 KB Output is correct
52 Correct 16 ms 208 KB Output is correct
53 Correct 12 ms 208 KB Output is correct
54 Correct 9 ms 324 KB Output is correct
55 Correct 8 ms 320 KB Output is correct
56 Correct 9 ms 336 KB Output is correct
57 Correct 12 ms 336 KB Output is correct
58 Correct 12 ms 340 KB Output is correct
59 Correct 13 ms 316 KB Output is correct
60 Correct 16 ms 320 KB Output is correct
61 Correct 13 ms 340 KB Output is correct
62 Correct 17 ms 324 KB Output is correct
63 Correct 18 ms 352 KB Output is correct
64 Correct 13 ms 336 KB Output is correct

Subtask #4
45.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 208 KB Output is correct
2 Correct 7 ms 208 KB Output is correct
3 Correct 7 ms 308 KB Output is correct
4 Correct 10 ms 324 KB Output is correct
5 Correct 9 ms 336 KB Output is correct
6 Correct 11 ms 208 KB Output is correct
7 Correct 12 ms 208 KB Output is correct
8 Correct 7 ms 208 KB Output is correct
9 Correct 11 ms 328 KB Output is correct
10 Correct 12 ms 328 KB Output is correct
11 Correct 9 ms 332 KB Output is correct
12 Correct 10 ms 464 KB Output is correct
13 Correct 11 ms 344 KB Output is correct
14 Correct 8 ms 208 KB Output is correct
15 Correct 13 ms 208 KB Output is correct
16 Correct 13 ms 208 KB Output is correct
17 Correct 12 ms 208 KB Output is correct
18 Correct 11 ms 208 KB Output is correct
19 Correct 8 ms 312 KB Output is correct
20 Correct 13 ms 208 KB Output is correct
21 Correct 7 ms 208 KB Output is correct
22 Correct 12 ms 208 KB Output is correct
23 Correct 7 ms 208 KB Output is correct
24 Correct 8 ms 208 KB Output is correct
25 Correct 7 ms 208 KB Output is correct
26 Correct 8 ms 316 KB Output is correct
27 Correct 9 ms 288 KB Output is correct
28 Correct 15 ms 208 KB Output is correct
29 Correct 6 ms 336 KB Output is correct
30 Correct 11 ms 320 KB Output is correct
31 Correct 12 ms 436 KB Output is correct
32 Correct 10 ms 208 KB Output is correct
33 Correct 13 ms 208 KB Output is correct
34 Correct 14 ms 208 KB Output is correct
35 Correct 15 ms 208 KB Output is correct
36 Correct 7 ms 208 KB Output is correct
37 Correct 8 ms 208 KB Output is correct
38 Correct 10 ms 312 KB Output is correct
39 Correct 13 ms 296 KB Output is correct
40 Correct 11 ms 316 KB Output is correct
41 Correct 11 ms 208 KB Output is correct
42 Correct 10 ms 208 KB Output is correct
43 Correct 13 ms 336 KB Output is correct
44 Correct 12 ms 336 KB Output is correct
45 Correct 16 ms 328 KB Output is correct
46 Correct 9 ms 208 KB Output is correct
47 Correct 9 ms 336 KB Output is correct
48 Correct 11 ms 344 KB Output is correct
49 Correct 11 ms 328 KB Output is correct
50 Correct 13 ms 332 KB Output is correct
51 Correct 16 ms 340 KB Output is correct
52 Correct 16 ms 208 KB Output is correct
53 Correct 16 ms 324 KB Output is correct
54 Correct 17 ms 328 KB Output is correct
55 Correct 15 ms 428 KB Output is correct
56 Correct 11 ms 320 KB Output is correct
57 Correct 14 ms 336 KB Output is correct
58 Correct 15 ms 332 KB Output is correct
59 Correct 15 ms 324 KB Output is correct
60 Correct 16 ms 332 KB Output is correct
61 Correct 8 ms 332 KB Output is correct
62 Correct 10 ms 344 KB Output is correct
63 Correct 10 ms 336 KB Output is correct
64 Correct 14 ms 324 KB Output is correct
65 Correct 16 ms 344 KB Output is correct
66 Correct 11 ms 320 KB Output is correct
67 Partially correct 17 ms 336 KB Output is partially correct
68 Partially correct 16 ms 312 KB Output is partially correct
69 Partially correct 15 ms 448 KB Output is partially correct
70 Partially correct 14 ms 336 KB Output is partially correct
71 Correct 10 ms 336 KB Output is correct
72 Correct 11 ms 328 KB Output is correct
73 Correct 16 ms 332 KB Output is correct
74 Correct 13 ms 336 KB Output is correct
75 Partially correct 14 ms 336 KB Output is partially correct
76 Partially correct 16 ms 336 KB Output is partially correct
77 Correct 13 ms 340 KB Output is correct
78 Correct 16 ms 336 KB Output is correct
79 Correct 14 ms 700 KB Output is correct
80 Correct 18 ms 320 KB Output is correct
81 Partially correct 12 ms 320 KB Output is partially correct
82 Partially correct 17 ms 340 KB Output is partially correct