Submission #222686

#	Time	Username	Problem	Language	Result	Execution time	Memory
222686		quocnguyen1012	Chameleon's Love (JOI20_chameleon)	C++14	4 / 100	30 ms	512 KiB

chameleon

#ifndef LOCAL
#include "chameleon.h"
#endif // LOCAL

#ifdef LOCAL
#include<bits/stdc++.h>

namespace {

using std::exit;
using std::fprintf;
using std::printf;
using std::scanf;

constexpr int Q_MAX = 20'000;
constexpr int N_MAX = 500;

int N;
int Y[N_MAX * 2 + 1], C[N_MAX * 2 + 1], L[N_MAX * 2 + 1];

int query_count = 0;
int answer_count = 0;
bool finishes[N_MAX * 2 + 1];

void WrongAnswer(int code) {
  printf("Wrong Answer [%d]\n", code);
  exit(0);
}

}  // namespace

int Query(const std::vector<int> &p) {
  if (++query_count > Q_MAX) WrongAnswer(3);
  bool presents[N_MAX * 2 + 1];
  for (int i = 1; i <= N * 2; ++i) presents[i] = false;
  for (const int k : p) {
    if (k <= 0 || k > N * 2) WrongAnswer(1);
    if (presents[k]) WrongAnswer(2);
    presents[k] = true;
  }
  bool colors[N_MAX + 1];
  for (int j = 1; j <= N; ++j) colors[j] = false;
  int color_count = 0;
  for (int i = 1; i <= N * 2; ++i) {
    if (!presents[i]) continue;
    const int color = presents[L[i]] ? C[L[i]] : C[i];
    if (!colors[color]) {
      ++color_count;
      colors[color] = true;
    }
  }
  return color_count;
}

void Answer(int a, int b) {
  ++answer_count;
  if (a <= 0 || a > N * 2) WrongAnswer(4);
  if (b <= 0 || b > N * 2) WrongAnswer(4);
  if (finishes[a]) WrongAnswer(5);
  finishes[a] = true;
  if (finishes[b]) WrongAnswer(5);
  finishes[b] = true;
  if (C[a] != C[b]) WrongAnswer(6);
}
#endif //LOCAL
#include <bits/stdc++.h>

#define fi first
#define se second
#define mp make_pair
#define pb push_back
#define eb emplace_back

using namespace std;
typedef long long ll;
typedef pair<int, int> ii;

void Solve(int N)
{
  vector<int> v;
  for(int i = 1; i <= 2 * N; ++i){
    int l = 0, r = v.size() - 1, mid;
    while(l <= r){
      mid = (l + r) / 2;
      vector<int> tmp;
      for(int j = 0; j <= mid; ++j){
        tmp.eb(v[j]);
      }
      tmp.eb(i);
      if(Query(tmp) == tmp.size()){
        l = mid + 1;
      }
      else{
        r = mid - 1;
      }
    }
    if(l >= v.size()){
        v.eb(i);
      }
    else{
      Answer(v[l], i);
      //cerr << v[l] << ' ' << i << '\n';
      swap(v[l], v.back());
      v.pop_back();
    }
  }
}

#ifdef LOCAL
int main() {
  #ifdef LOCAL
    freopen("A.INP", "r", stdin);
    freopen("A.OUT", "w", stdout);
  #endif // LOCAL
  if (scanf("%d", &N) != 1) {
    fprintf(stderr, "Error while reading input.\n");
    exit(1);
  }
  for (int i = 1; i <= N * 2; ++i) {
    if (scanf("%d", &Y[i]) != 1) {
      fprintf(stderr, "Error while reading input.\n");
      exit(1);
    }
  }
  for (int i = 1; i <= N * 2; ++i) {
    if (scanf("%d", &C[i]) != 1) {
      fprintf(stderr, "Error while reading input.\n");
      exit(1);
    }
  }
  for (int i = 1; i <= N * 2; ++i) {
    if (scanf("%d", &L[i]) != 1) {
      fprintf(stderr, "Error while reading input.\n");
      exit(1);
    }
  }
  for (int i = 1; i <= N * 2; ++i) finishes[i] = false;
  Solve(N);
  if (answer_count != N) WrongAnswer(7);
  printf("Accepted: %d\n", query_count);
  return 0;
}
#endif // LOCAL

Compilation message (stderr)

chameleon.cpp: In function 'void Solve(int)':
chameleon.cpp:90:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       if(Query(tmp) == tmp.size()){
          ~~~~~~~~~~~^~~~~~~~~~~~~
chameleon.cpp:97:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if(l >= v.size()){
        ~~^~~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 20
• Subtask 5: 0 / 36