Submission #533422

#	Time	Username	Problem	Language	Result	Execution time	Memory
533422		devariaota	Carnival (CEOI14_carnival)	C++17	100 / 100	9 ms	212 KiB

carnival

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef double db;
#define pairll pair<ll,ll>
#define lpairll pair<ll,pairll>
 
#define pb push_back
#define mp make_pair
#define fr first
#define sc second
#define repp(i,a,b) for(ll i = (a); i <= (b); i++)
#define repm(i, a, b) for (ll i = (a); i >= (b); i--)
#define repz(i, a, b) for (ll i = (a); i < (b); i++)
 
const long long MOD = 1e9+7, N = 1e5 + 5, M = 1e3+5, INF = 1e9; 

ll tc = 1, n, m,k,cr[N],ans[N], col = 1;
string s, ye = "YES", no = "NO", nu;

void fastt(){  
  ios_base::sync_with_stdio(0); 
  cin.tie(NULL);
  cout.tie(NULL); 
}

ll ask(ll l, ll r, ll num){
  cout << r-l+2 << " ";
  repp(i,l,r) cout << cr[i] << " ";
  cout << num << endl;
  cin >> m;
  return m;
}

void op(){
  cout << "0 ";
  repp(i,1,n) cout << ans[i] << " ";
  cout << endl;
}

void input(){
  cin >> n;
} 

void solve(){
  ans[1] = cr[1] = 1;
  repp(i,2,n){
    ll res = ask(1,col,i);
    if(res > col){
      col++;
      cr[col] = i;
      ans[i] = col;
      continue;
    }
    ll l = 1, r = col;
    while (l < r){
      ll mid = (l+r)/2, res;
      res = ask(l,mid,i);
      if(res == mid-l+1) r = mid;
      else l = mid+1;
    }
    ans[i] = l;
  }
  op();
}

int main(){
  // freopen("input.txt", "r", stdin);
  // freopen("output.txt", "w", stdout);
  fastt();
  while(tc--){
    input();
    solve();
  }
}

/*
3
1 2 3

1 2 3

5
2 8 6 3 1
1 2 3 6 8

(n-1)/2

*/

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