Submission #1114481

#	Time	Username	Problem	Language	Result	Execution time	Memory
1114481		kokoxuya	Carnival (CEOI14_carnival)	C++17	0 / 100	29 ms	336 KiB

carnival

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pb push_back
#define mp make_pair
#define pii pair<int,int>
#define ss second
#define ff first
#define piii pair<int,pii>
#define debu(x) (cerr << #x  << " = "<< x << "\n")
#define debu2(x,y) (cerr << #x  << " = "<< x << " " << #y << " = " << y << "\n")
#define debu3(x,y,z) (cerr << #x  << " = "<< x << " " << #y << " = " << y << " " << #z << " = " << z<< "\n")
#define bitout(x,y) {\
	cerr << #x << " : ";\
	for (int justforbits = y; justforbits >=0; justforbits--)cout << (((1 << justforbits) & x)>=1);\
	cout << "\n";\
}
#define rangeout(j,rangestart,rangeend) {\
	cerr << "outputting" << #j<< ":\n";\
	for (int forrang = rangestart; forrang <= rangeend; forrang++)cerr << j[forrang] << " ";\
}
#define c1 cerr << "Checkpoint 1! \n\n"
#define c2 cerr << "Checkpoint 2! \n\n"
#define c3 cerr << "Checkpoint 3! \n\n"
#define c4 cerr << "Checkpoint 4! \n\n"
#define defN 151

//ifstream input("output.txt");
//ofstream output("in.txt");

//#define cout output

int inp()
{
	int n;
	cin >> n;
	return n;
}

vector<int>pointers(defN);

bool checkers(int star, int en, int x)
{
	//c3;
	//checks if x is the same as any other number from star to en
	int t1,t2;
	vector<int>xx;
	for (int a = star; a <= en; a++)
	{
		if (a == x)continue;
		xx.pb(a);
	}
	//if (xx.size() == 0)return false;
	
	cout << xx.size()<< " ";
	for (int y : xx)
	{
		cout << y << " " ;
	}
	cout.flush();
	t1 = inp();
	
	cout << xx.size() + 1 << " ";
	for (int y : xx)
	{
		cout << y << " ";
	}
	cout << x << " ";
	cout << endl;
	t2 = inp();
	
	return (t1 == t2);
}

int leader(int x)
{
	if (pointers[x] == x)return x;
	return pointers[x] = leader(pointers[x]);
}

void merge(int x,int y)
{
	pointers[leader(x)] = leader(y);
}

vector<int>ans(defN,-1);
int currat = 0;

void dfs(int currnode)
{
	if (leader(currnode) == currnode)
	{
		ans[currnode] = currat;
		currat++;
		return;
	}
	if (ans[leader(currnode)] == -1)
	{
		dfs(leader(currnode));
	}
	
	ans[currnode] = ans[leader(currnode)];
}



signed main()
{
    int t1,t2,t3,t4;
    
	int n;
	n = inp();
	
	for (int a = 1; a<=n;a++) pointers[a] = a;
	
	for (int a = 2; a <=n;a++)
	{
		int hi = a-1, lo = 1,mid;

		bool ans = -1;
		while (hi >= lo)
		{
			mid = (hi+lo)/2;
			
			if (checkers(lo,mid,a))
			{
				ans = mid;
				hi = mid - 1;
			}
			else
			{
				lo = mid + 1;
			}
		}
		
		if (ans != -1)merge(a,lo);
	}
	
	int currat = 1;
	
	for (int a = 1; a <= n; a++)dfs(a);
	
	cout << 0 << " ";
	for (int a = 1; a<=n;a++)
	{
		cout << ans[a] << " ";
	}
	cout << endl;
}

Compilation message (stderr)

carnival.cpp: In function 'int main()':
carnival.cpp:136:11: warning: comparison of constant '-1' with boolean expression is always true [-Wbool-compare]
  136 |   if (ans != -1)merge(a,lo);
      |       ~~~~^~~~~
carnival.cpp:109:9: warning: unused variable 't1' [-Wunused-variable]
  109 |     int t1,t2,t3,t4;
      |         ^~
carnival.cpp:109:12: warning: unused variable 't2' [-Wunused-variable]
  109 |     int t1,t2,t3,t4;
      |            ^~
carnival.cpp:109:15: warning: unused variable 't3' [-Wunused-variable]
  109 |     int t1,t2,t3,t4;
      |               ^~
carnival.cpp:109:18: warning: unused variable 't4' [-Wunused-variable]
  109 |     int t1,t2,t3,t4;
      |                  ^~
carnival.cpp:139:6: warning: unused variable 'currat' [-Wunused-variable]
  139 |  int currat = 1;
      |      ^~~~~~

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