답안 #381712

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
381712	2021-03-25T18:20:25 Z	MohamedAhmed04	Political Development (BOI17_politicaldevelopment)	C++14	27 / 100	344 ms	309868 KB

politicaldevelopment

#include <bits/stdc++.h>

using namespace std ;

const int MAX = 5e4 + 10 ;

vector<int>v[MAX] ;
int n , k ;

int ans = 0 ;

vector<int>taken ;
bitset<MAX>mark[MAX] ;

bool check(int x)
{
	for(auto &i : taken)
	{
		if(!mark[x][i] || !mark[i][x])
			return false ;
	}
	return true ;
}

void solve(vector<int>&v1 , int idx)
{
	if(idx == v1.size())
	{
		ans = max(ans , (int)(taken.size())) ;
		return ;
	}
	if(check(v1[idx]))
	{
		taken.push_back(v1[idx]) ;
		solve(v1 , idx+1) ;
		taken.pop_back() ;
	}
	solve(v1 , idx+1) ;
}

int main()
{
	ios_base::sync_with_stdio(0) ;
	cin.tie(0) ;
	cin>>n>>k ;
	for(int i = 0 ; i < n ; ++i)
	{
		int sz ;
		cin>>sz ;
		v[i].resize(sz) ;
		for(auto &j : v[i])
		{
			cin>>j ;
			mark[i][j] = 1 ;
		}
	}
	for(int i = 0 ; i < n ; ++i)
	{
		if(v[i].size() < k)
		{
			taken.push_back(i) ;
			solve(v[i] , 0) ;
			taken.pop_back() ;
		}
	}
	return cout<<ans<<"\n" , 0 ;
}

Compilation message

politicaldevelopment.cpp: In function 'void solve(std::vector<int>&, int)':
politicaldevelopment.cpp:27:9: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |  if(idx == v1.size())
      |     ~~~~^~~~~~~~~~~~
politicaldevelopment.cpp: In function 'int main()':
politicaldevelopment.cpp:59:18: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   59 |   if(v[i].size() < k)
      |      ~~~~~~~~~~~~^~~

Subtask #1
4.0 / 4.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	1516 KB	Output is correct
2	Correct	2 ms	1516 KB	Output is correct
3	Correct	15 ms	22380 KB	Output is correct
4	Correct	15 ms	21740 KB	Output is correct
5	Correct	14 ms	21740 KB	Output is correct
6	Correct	14 ms	21740 KB	Output is correct
7	Correct	14 ms	21740 KB	Output is correct
8	Correct	3 ms	1516 KB	Output is correct
9	Correct	2 ms	1516 KB	Output is correct
10	Correct	2 ms	1516 KB	Output is correct

Subtask #2
0 / 12.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	1516 KB	Output is correct
2	Correct	2 ms	1516 KB	Output is correct
3	Correct	15 ms	22380 KB	Output is correct
4	Correct	15 ms	21740 KB	Output is correct
5	Correct	14 ms	21740 KB	Output is correct
6	Correct	14 ms	21740 KB	Output is correct
7	Correct	14 ms	21740 KB	Output is correct
8	Correct	3 ms	1516 KB	Output is correct
9	Correct	2 ms	1516 KB	Output is correct
10	Correct	2 ms	1516 KB	Output is correct
11	Correct	14 ms	21740 KB	Output is correct
12	Correct	15 ms	21732 KB	Output is correct
13	Correct	2 ms	1516 KB	Output is correct
14	Correct	14 ms	21740 KB	Output is correct
15	Correct	2 ms	1516 KB	Output is correct
16	Correct	15 ms	21740 KB	Output is correct
17	Correct	2 ms	1516 KB	Output is correct
18	Correct	14 ms	21740 KB	Output is correct
19	Correct	2 ms	1516 KB	Output is correct
20	Correct	14 ms	21760 KB	Output is correct
21	Correct	14 ms	21740 KB	Output is correct
22	Correct	2 ms	1516 KB	Output is correct
23	Incorrect	17 ms	22892 KB	Output isn't correct
24	Halted	0 ms	0 KB	-

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	1516 KB	Output is correct
2	Correct	2 ms	1644 KB	Output is correct
3	Correct	2 ms	1644 KB	Output is correct
4	Correct	2 ms	1516 KB	Output is correct
5	Correct	2 ms	1644 KB	Output is correct
6	Correct	2 ms	1644 KB	Output is correct
7	Correct	2 ms	1644 KB	Output is correct
8	Correct	2 ms	1644 KB	Output is correct
9	Correct	2 ms	1644 KB	Output is correct
10	Correct	2 ms	1644 KB	Output is correct
11	Correct	336 ms	309868 KB	Output is correct
12	Correct	2 ms	1644 KB	Output is correct
13	Correct	344 ms	309868 KB	Output is correct
14	Correct	2 ms	1644 KB	Output is correct
15	Correct	343 ms	309868 KB	Output is correct
16	Correct	335 ms	309868 KB	Output is correct
17	Correct	332 ms	309868 KB	Output is correct
18	Correct	339 ms	309868 KB	Output is correct

Subtask #4
0 / 38.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	1516 KB	Output is correct
2	Correct	2 ms	1516 KB	Output is correct
3	Correct	15 ms	22380 KB	Output is correct
4	Correct	15 ms	21740 KB	Output is correct
5	Correct	14 ms	21740 KB	Output is correct
6	Correct	14 ms	21740 KB	Output is correct
7	Correct	14 ms	21740 KB	Output is correct
8	Correct	3 ms	1516 KB	Output is correct
9	Correct	2 ms	1516 KB	Output is correct
10	Correct	2 ms	1516 KB	Output is correct
11	Correct	14 ms	21740 KB	Output is correct
12	Correct	15 ms	21732 KB	Output is correct
13	Correct	2 ms	1516 KB	Output is correct
14	Correct	14 ms	21740 KB	Output is correct
15	Correct	2 ms	1516 KB	Output is correct
16	Correct	15 ms	21740 KB	Output is correct
17	Correct	2 ms	1516 KB	Output is correct
18	Correct	14 ms	21740 KB	Output is correct
19	Correct	2 ms	1516 KB	Output is correct
20	Correct	14 ms	21760 KB	Output is correct
21	Correct	14 ms	21740 KB	Output is correct
22	Correct	2 ms	1516 KB	Output is correct
23	Incorrect	17 ms	22892 KB	Output isn't correct
24	Halted	0 ms	0 KB	-

Subtask #5
0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	1516 KB	Output is correct
2	Correct	2 ms	1516 KB	Output is correct
3	Correct	15 ms	22380 KB	Output is correct
4	Correct	15 ms	21740 KB	Output is correct
5	Correct	14 ms	21740 KB	Output is correct
6	Correct	14 ms	21740 KB	Output is correct
7	Correct	14 ms	21740 KB	Output is correct
8	Correct	3 ms	1516 KB	Output is correct
9	Correct	2 ms	1516 KB	Output is correct
10	Correct	2 ms	1516 KB	Output is correct
11	Correct	14 ms	21740 KB	Output is correct
12	Correct	15 ms	21732 KB	Output is correct
13	Correct	2 ms	1516 KB	Output is correct
14	Correct	14 ms	21740 KB	Output is correct
15	Correct	2 ms	1516 KB	Output is correct
16	Correct	15 ms	21740 KB	Output is correct
17	Correct	2 ms	1516 KB	Output is correct
18	Correct	14 ms	21740 KB	Output is correct
19	Correct	2 ms	1516 KB	Output is correct
20	Correct	14 ms	21760 KB	Output is correct
21	Correct	14 ms	21740 KB	Output is correct
22	Correct	2 ms	1516 KB	Output is correct
23	Incorrect	17 ms	22892 KB	Output isn't correct
24	Halted	0 ms	0 KB	-

답안 #381712

Compilation message

Subtask #1 4.0 / 4.0

Subtask #2 0 / 12.0

Subtask #3 23.0 / 23.0

Subtask #4 0 / 38.0

Subtask #5 0 / 23.0

Subtask #1
4.0 / 4.0

Subtask #2
0 / 12.0

Subtask #3
23.0 / 23.0

Subtask #4
0 / 38.0

Subtask #5
0 / 23.0