Submission #820076

#	Time	Username	Problem	Language	Result	Execution time	Memory
820076		MohamedAhmed04	The Collection Game (BOI21_swaps)	C++14	5 / 100	10 ms	352 KiB

swaps

#include <bits/stdc++.h>
#include "swaps.h"

using namespace std ;

int n ;

mt19937 rng(2004) ;

vector<int>solve()
{
	vector< vector<int> >v ;
	for(int i = 1 ; i <= n ; ++i)
		v.push_back({i}) ;
	while(v.size() > 1)
	{
		shuffle(v.begin() , v.end() , rng) ;
		vector< vector<int> >v2 ;
		int sz = v.size() ;
		vector< array<int , 4> >state ;
		for(int i = 0 ; i < sz-1 ; i += 2)
		{
			state.push_back({i , i+1 , 0 , 0}) ;
			v2.push_back({}) ;
		}
		if((sz & 1))
			v2.push_back(v[sz-1]) ;
		bool ok = false ;
		while(!ok)
		{
			int cnt = 0 ;
			for(auto &a : state)
			{
				if(a[2] < v[a[0]].size() && a[3] < v[a[1]].size())
					cnt++ , schedule(v[a[0]][a[2]] , v[a[1]][a[3]]) ;
				else if(a[2] < v[a[0]].size() && a[3] == v[a[1]].size())
				{
					while(a[2] < v[a[0]].size())
						v2[a[0]/2].push_back(v[a[0]][a[2]]) , a[2]++ ;
					//schedule(v[a[0]][a[2]] , v[a[0]][a[2]+1]) ;
				}
				else if(a[2] == v[a[0]].size() && a[3] < v[a[1]].size())
				{
					while(a[3] < v[a[1]].size())
						v2[a[0]/2].push_back(v[a[1]][a[3]]) , a[3]++ ;
					//schedule(v[a[1]][a[3]] , v[a[1]][a[3]+1]) ;
				}
			}
			vector<int>cur ;
			if(cnt)
				cur = visit() ;
			int idx = 0 ;
			for(auto &a : state)
			{
				int idx2 = a[0] / 2 ;
				if(a[2] < v[a[0]].size() && a[3] < v[a[1]].size())
				{
					if(cur[idx])
						v2[idx2].push_back(v[a[0]][a[2]]) , a[2]++ ;
					else
						v2[idx2].push_back(v[a[1]][a[3]]) , a[3]++ ;
					if(a[2] == v[a[0]].size() && a[3] == (int)(v[a[1]].size()) - 1)
						v2[idx2].push_back(v[a[1]][a[3]]) , a[3]++ ;
					else if(a[3] == v[a[1]].size() && a[2] == (int)(v[a[0]].size()) - 1)
						v2[idx2].push_back(v[a[0]][a[2]]) , a[2]++ ;
					++idx ;
				}
				// else if(a[2] < v[a[0]].size() && a[3] == v[a[1]].size())
				// {
				// 	if(!cur[idx])
				// 		swap(v[a[0]][a[2]] , v[a[0]][a[2]+1]) ;
				// 	v2[idx2].push_back(v[a[0]][a[2]]) ;
				// 	a[2]++ ;
				// 	if(a[2] == (int)(v[a[0]].size()) - 1)
				// 		v2[idx2].push_back(v[a[0]][a[2]]) , a[2]++ ;
				// 	++idx ;
				// }
				// else if(a[2] == v[a[0]].size() && a[3] < v[a[1]].size())
				// {
				// 	if(!cur[idx])
				// 		swap(v[a[1]][a[3]] , v[a[1]][a[3]+1]) ;
				// 	v2[idx2].push_back(v[a[1]][a[3]]) ;
				// 	a[3]++ ;
				// 	if(a[3] == (int)(v[a[1]].size()) - 1)
				// 		v2[idx2].push_back(v[a[1]][a[3]]) , a[3]++ ;
				// 	++idx ;	
				// }
			}
			ok = true ;
			for(auto &a : state)
				ok &= (a[2] == v[a[0]].size() && a[3] == v[a[1]].size()) ;
		}
		v = v2 ;
		// for(int i = 0 ; i < v.size() ; ++i)
		// {
		// 	for(auto &x : v[i])
		// 		cout<<x<<" " ;
		// 	cout<<"\n" ;
		// }
	}
	return v[0] ;
}

void solve(int N, int V) 
{
	n = N ;
	answer(solve()) ;
	return ;
}

Compilation message (stderr)

swaps.cpp: In function 'std::vector<int> solve()':
swaps.cpp:34:13: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     if(a[2] < v[a[0]].size() && a[3] < v[a[1]].size())
swaps.cpp:34:38: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   34 |     if(a[2] < v[a[0]].size() && a[3] < v[a[1]].size())
swaps.cpp:36:18: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     else if(a[2] < v[a[0]].size() && a[3] == v[a[1]].size())
swaps.cpp:36:43: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |     else if(a[2] < v[a[0]].size() && a[3] == v[a[1]].size())
swaps.cpp:38:17: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |      while(a[2] < v[a[0]].size())
swaps.cpp:42:18: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     else if(a[2] == v[a[0]].size() && a[3] < v[a[1]].size())
swaps.cpp:42:44: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     else if(a[2] == v[a[0]].size() && a[3] < v[a[1]].size())
swaps.cpp:44:17: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |      while(a[3] < v[a[1]].size())
swaps.cpp:56:13: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |     if(a[2] < v[a[0]].size() && a[3] < v[a[1]].size())
swaps.cpp:56:38: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   56 |     if(a[2] < v[a[0]].size() && a[3] < v[a[1]].size())
swaps.cpp:62:14: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |      if(a[2] == v[a[0]].size() && a[3] == (int)(v[a[1]].size()) - 1)
swaps.cpp:64:19: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   64 |      else if(a[3] == v[a[1]].size() && a[2] == (int)(v[a[0]].size()) - 1)
swaps.cpp:91:17: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |     ok &= (a[2] == v[a[0]].size() && a[3] == v[a[1]].size()) ;
swaps.cpp:91:43: warning: comparison of integer expressions of different signedness: 'std::array<int, 4>::value_type' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |     ok &= (a[2] == v[a[0]].size() && a[3] == v[a[1]].size()) ;

• Subtask 1: 5 / 5
• Subtask 2: 0 / 10
• Subtask 3-1: 0 / 3
• Subtask 3-2: 0 / 2
• Subtask 4-1: 0 / 9
• Subtask 4-2: 0 / 6
• Subtask 5-1: 0 / 9
• Subtask 5-2: 0 / 6
• Subtask 6-1: 0 / 21
• Subtask 6-2: 0 / 14
• Subtask 7-1: 0 / 9
• Subtask 7-2: 0 / 6