oj.uz

Submission #841125

# Submission time Handle Problem Language Result Execution time Memory
841125 2023-09-01T09:28:36 Z MrBrionix Longest Trip (IOI23_longesttrip) C++17
85 / 100
 19 ms 468 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());
        
        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 3 ms 336 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 7 ms 208 KB Output is correct
3 Correct 7 ms 308 KB Output is correct
4 Correct 7 ms 336 KB Output is correct
5 Correct 12 ms 332 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 208 KB Output is correct
2 Correct 8 ms 208 KB Output is correct
3 Correct 11 ms 304 KB Output is correct
4 Correct 11 ms 316 KB Output is correct
5 Correct 12 ms 328 KB Output is correct
6 Correct 10 ms 208 KB Output is correct
7 Correct 9 ms 208 KB Output is correct
8 Correct 8 ms 308 KB Output is correct
9 Correct 7 ms 320 KB Output is correct
10 Correct 13 ms 336 KB Output is correct
11 Correct 9 ms 336 KB Output is correct
12 Correct 10 ms 324 KB Output is correct
13 Correct 12 ms 336 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 208 KB Output is correct
2 Correct 11 ms 208 KB Output is correct
3 Correct 8 ms 308 KB Output is correct
4 Correct 9 ms 328 KB Output is correct
5 Correct 9 ms 336 KB Output is correct
6 Correct 15 ms 208 KB Output is correct
7 Correct 9 ms 208 KB Output is correct
8 Correct 11 ms 304 KB Output is correct
9 Correct 11 ms 320 KB Output is correct
10 Correct 12 ms 336 KB Output is correct
11 Correct 10 ms 468 KB Output is correct
12 Correct 11 ms 340 KB Output is correct
13 Correct 10 ms 336 KB Output is correct
14 Correct 13 ms 208 KB Output is correct
15 Correct 13 ms 208 KB Output is correct
16 Correct 15 ms 208 KB Output is correct
17 Correct 15 ms 208 KB Output is correct
18 Correct 12 ms 208 KB Output is correct
19 Correct 13 ms 316 KB Output is correct
20 Correct 13 ms 312 KB Output is correct
21 Correct 11 ms 324 KB Output is correct
22 Correct 12 ms 332 KB Output is correct
23 Correct 10 ms 336 KB Output is correct
24 Correct 10 ms 336 KB Output is correct
25 Correct 12 ms 208 KB Output is correct
26 Correct 11 ms 208 KB Output is correct
27 Correct 13 ms 208 KB Output is correct
28 Correct 15 ms 208 KB Output is correct
29 Correct 14 ms 208 KB Output is correct
30 Correct 12 ms 208 KB Output is correct
31 Correct 15 ms 312 KB Output is correct
32 Correct 15 ms 208 KB Output is correct
33 Correct 12 ms 316 KB Output is correct
34 Correct 13 ms 304 KB Output is correct
35 Correct 15 ms 312 KB Output is correct
36 Correct 17 ms 336 KB Output is correct
37 Correct 18 ms 336 KB Output is correct
38 Correct 18 ms 208 KB Output is correct
39 Correct 17 ms 336 KB Output is correct
40 Correct 16 ms 324 KB Output is correct
41 Correct 13 ms 332 KB Output is correct
42 Correct 15 ms 328 KB Output is correct
43 Correct 10 ms 208 KB Output is correct
44 Correct 15 ms 320 KB Output is correct
45 Correct 17 ms 208 KB Output is correct
46 Correct 10 ms 208 KB Output is correct
47 Correct 12 ms 208 KB Output is correct
48 Correct 17 ms 208 KB Output is correct
49 Correct 15 ms 208 KB Output is correct
50 Correct 12 ms 312 KB Output is correct
51 Correct 17 ms 308 KB Output is correct
52 Correct 13 ms 208 KB Output is correct
53 Correct 12 ms 312 KB Output is correct
54 Correct 11 ms 208 KB Output is correct
55 Correct 12 ms 320 KB Output is correct
56 Correct 19 ms 340 KB Output is correct
57 Correct 17 ms 324 KB Output is correct
58 Correct 14 ms 336 KB Output is correct
59 Correct 16 ms 336 KB Output is correct
60 Correct 14 ms 336 KB Output is correct
61 Correct 13 ms 316 KB Output is correct
62 Correct 15 ms 336 KB Output is correct
63 Correct 18 ms 336 KB Output is correct
64 Correct 14 ms 328 KB Output is correct

Subtask #4
45.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 208 KB Output is correct
2 Correct 6 ms 208 KB Output is correct
3 Correct 10 ms 208 KB Output is correct
4 Correct 12 ms 208 KB Output is correct
5 Correct 10 ms 332 KB Output is correct
6 Correct 10 ms 208 KB Output is correct
7 Correct 6 ms 208 KB Output is correct
8 Correct 8 ms 208 KB Output is correct
9 Correct 12 ms 308 KB Output is correct
10 Correct 9 ms 336 KB Output is correct
11 Correct 10 ms 336 KB Output is correct
12 Correct 11 ms 328 KB Output is correct
13 Correct 10 ms 336 KB Output is correct
14 Correct 10 ms 208 KB Output is correct
15 Correct 9 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 8 ms 208 KB Output is correct
19 Correct 13 ms 324 KB Output is correct
20 Correct 9 ms 208 KB Output is correct
21 Correct 15 ms 208 KB Output is correct
22 Correct 10 ms 208 KB Output is correct
23 Correct 14 ms 208 KB Output is correct
24 Correct 15 ms 208 KB Output is correct
25 Correct 10 ms 208 KB Output is correct
26 Correct 11 ms 208 KB Output is correct
27 Correct 14 ms 208 KB Output is correct
28 Correct 9 ms 208 KB Output is correct
29 Correct 16 ms 208 KB Output is correct
30 Correct 12 ms 320 KB Output is correct
31 Correct 13 ms 208 KB Output is correct
32 Correct 15 ms 208 KB Output is correct
33 Correct 17 ms 208 KB Output is correct
34 Correct 16 ms 208 KB Output is correct
35 Correct 15 ms 208 KB Output is correct
36 Correct 16 ms 208 KB Output is correct
37 Correct 16 ms 208 KB Output is correct
38 Correct 8 ms 304 KB Output is correct
39 Correct 18 ms 208 KB Output is correct
40 Correct 13 ms 320 KB Output is correct
41 Correct 12 ms 320 KB Output is correct
42 Correct 17 ms 208 KB Output is correct
43 Correct 11 ms 332 KB Output is correct
44 Correct 10 ms 336 KB Output is correct
45 Correct 12 ms 324 KB Output is correct
46 Correct 13 ms 336 KB Output is correct
47 Partially correct 18 ms 332 KB Output is partially correct
48 Partially correct 16 ms 328 KB Output is partially correct
49 Partially correct 16 ms 296 KB Output is partially correct
50 Partially correct 12 ms 336 KB Output is partially correct
51 Correct 13 ms 320 KB Output is correct
52 Correct 15 ms 456 KB Output is correct
53 Correct 12 ms 328 KB Output is correct
54 Correct 12 ms 336 KB Output is correct
55 Correct 12 ms 336 KB Output is correct
56 Partially correct 15 ms 336 KB Output is partially correct
57 Partially correct 15 ms 208 KB Output is partially correct
58 Correct 13 ms 208 KB Output is correct
59 Correct 13 ms 296 KB Output is correct
60 Correct 13 ms 208 KB Output is correct
61 Correct 16 ms 448 KB Output is correct
62 Partially correct 17 ms 340 KB Output is partially correct
63 Partially correct 16 ms 328 KB Output is partially correct
64 Partially correct 14 ms 316 KB Output is partially correct
65 Partially correct 16 ms 208 KB Output is partially correct
66 Partially correct 11 ms 208 KB Output is partially correct
67 Partially correct 13 ms 332 KB Output is partially correct
68 Partially correct 13 ms 336 KB Output is partially correct
69 Partially correct 16 ms 340 KB Output is partially correct
70 Partially correct 16 ms 324 KB Output is partially correct
71 Partially correct 15 ms 336 KB Output is partially correct
72 Partially correct 17 ms 208 KB Output is partially correct
73 Partially correct 17 ms 328 KB Output is partially correct
74 Partially correct 15 ms 332 KB Output is partially correct
75 Partially correct 16 ms 324 KB Output is partially correct
76 Partially correct 14 ms 320 KB Output is partially correct
77 Partially correct 18 ms 320 KB Output is partially correct
78 Partially correct 16 ms 328 KB Output is partially correct
79 Partially correct 19 ms 316 KB Output is partially correct
80 Partially correct 14 ms 340 KB Output is partially correct
81 Partially correct 16 ms 208 KB Output is partially correct
82 Partially correct 17 ms 340 KB Output is partially correct