oj.uz

Submission #1085225

# Submission time Handle Problem Language Result Execution time Memory
1085225 2024-09-07T17:30:51 Z Fran ICC (CEOI16_icc) C++17
0 / 100
 3 ms 604 KB 
#include<bits/stdc++.h>
#include "icc.h"
using namespace std;
using pii = pair<int, int>;
constexpr int NN = 101;
constexpr int K = 7;
bitset<NN> bits[NN], was;
int id[NN], siz[NN], A[NN], A_temp[NN], B[NN], B_temp[NN];
vector<int> members[NN];



void run(int N) {
  for(int i = 1; i <= N; ++i) {
    id[i] = i; 
    members[i].emplace_back(i);
    siz[i] = 1;
  }

  auto compute_bits = []() {
    for(int i = 1; i <= NN; i++) {
      int number = i;
      int cnt = 0;
      while(number > 0) {
        bits[i][cnt++] = number%2;
        number >>= 1;
      }
    }
  };

  compute_bits();
 
  auto find = [&](int x, auto&& find) -> int {
     return (id[x] != x) ? id[x] = find(id[x], find) : x;
  };

  auto join_vectors = [](int a, int b) {
    for(auto& s : members[b]) {
      members[a].emplace_back(s);
      members[b].pop_back();
    }
  };

  auto join_sets = [&](int a, int b) {
    a = find(a, find);
    b = find(b, find);
    if(a == b) return;
    if(siz[a] < siz[b]) swap(a, b);
    siz[a] += siz[b];
    siz[b] = 0;
    id[b] = a;
    join_vectors(a, b);
  };


  for(int tour = 0; tour < N - 1; ++tour) {
    int a_node{-1}, b_node{-1};
    int a_siz{0}, b_siz{0};
    bool found = 0;
    
    for(int k = 0; k < K; ++k) {
      a_siz = 0, 
      b_siz = 0;
      for(int i = 0; i <= N; ++i) was[i] = 0;
      for(int cur = 1; cur <= N; ++cur) {
        cur = find(cur, find);
        if(was[cur]) continue;
        was[cur] = 1;
        if(bits[cur][k]){
          for(auto& member : members[cur])
            A[a_siz++] = member;
        }
        else {
          for(auto& member : members[cur])
            B[b_siz++] = member;
        }
      }
      if(query(a_siz, b_siz, A, B)) break;
    }
    
    int l_a{0}, r_a{a_siz};
    while(r_a - l_a > 1) {
      int mid = l_a + (r_a-l_a)/2;
      int temp_siz{0};
      for(int i = l_a; i < mid; ++i) A_temp[temp_siz++] = A[i];
      if(query(temp_siz, b_siz, A_temp, B)) r_a = mid;
      else {
        l_a = mid;
      }
    }
    a_node = A[l_a];
    int l_b{0}, r_b{b_siz};
    while(r_b - l_b > 1) {
      int mid = l_b + (r_b-l_b)/2;
      int temp_siz{0};
      for(int i = l_b; i < mid; ++i) B_temp[temp_siz++] = B[i];
      if(query(a_siz, temp_siz, A, B_temp)) r_b = mid;
      else l_b = mid;
    }
    b_node = B[l_b];
    setRoad(a_node, b_node);
  }
}

Compilation message

icc.cpp: In function 'void run(int)':
icc.cpp:59:10: warning: unused variable 'found' [-Wunused-variable]
   59 |     bool found = 0;
      |          ^~~~~
icc.cpp:44:8: warning: variable 'join_sets' set but not used [-Wunused-but-set-variable]
   44 |   auto join_sets = [&](int a, int b) {
      |        ^~~~~~~~~

Subtask #1
0 / 7.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 600 KB Wrong road!
2 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 600 KB Wrong road!
2 Halted 0 ms 0 KB -

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 604 KB Wrong road!
2 Halted 0 ms 0 KB -

Subtask #4
0 / 21.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 604 KB Wrong road!
2 Halted 0 ms 0 KB -

Subtask #5
0 / 29.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 600 KB Wrong road!
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 604 KB Wrong road!
2 Halted 0 ms 0 KB -