Submission #199202

#	Time	Username	Problem	Language	Result	Execution time	Memory
199202		xiaowuc1	Carnival (CEOI14_carnival)	C++17	100 / 100	31 ms	380 KiB

carnival

#include <algorithm>
#include <bitset>
#include <cassert>
#include <chrono>
#include <cstring>
#include <iomanip>
#include <iostream>
#include <map>
#include <queue>
#include <random>
#include <set>
#include <stack>
#include <vector>

using namespace std;

// BEGIN NO SAD
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define trav(a, x) for(auto& a : x)
#define all(x) x.begin(), x.end()
#define sz(x) (int)(x).size()
typedef vector<int> vi;
// END NO SAD

typedef long long ll;
typedef pair<int, int> pii;

int ret[155];
int n;

bool match(int a, int b) {
  cout << 2 << " " << a << " " << b << endl;
  int t;
  cin >> t;
  return t == 1;
}

int qry(int lhs, int rhs) {
  cout << rhs-lhs+1;
  for(int i = lhs; i <= rhs; i++) cout << " " << i;
  cout << endl;
  int t;
  cin >> t;
  return t;
}

void solve() {
  cin >> n;
  int k = qry(1, n);
  memset(ret, 1, sizeof(ret));
  int last = k;
  for(int i = n-1; i >= 1; i--) {
    int a = qry(1, i);
    if(a != last) {
      ret[i+1] = last--;
      assert(a == last);
    }
  }
  ret[1] = 1;
  for(int i = n; i >= 1; i--) {
    if(ret[i] <= k) continue;
    for(int j = i-1; j >= 1; j--) {
      if(ret[j] > k) continue;
      if(match(i, j)) {
        ret[i] = ret[j];
        break;
      }
    }
    assert(ret[i] <= k);
  }
  // done - print the answer
  cout << 0;
  for(int i = 1; i <= n; i++) cout << " " << ret[i];
  cout << endl;
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL); cout.tie(NULL);
  solve();
}

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