제출 #924421

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
924421		Faisal_Saqib	Political Development (BOI17_politicaldevelopment)	C++17	62 / 100	3044 ms	307024 KiB

politicaldevelopment

#include <iostream>
#include <bitset> 
// any
using namespace std;
const int N=5e4;
bitset<N> ma[N];
int n,k,mx=0;
bitset<N> x;
void recur(int& sz)
{
	mx=max(mx,sz);	
	if(x.none())
		return;
	sz++;
	bitset<N> np=x;
	for(int l=np._Find_first();l<N;l=np._Find_next(l))
	{
		x=np&ma[l];
		recur(sz);
	}
	sz--;
}
int main()
{
	cin.tie(0);
	cout.tie(0);
	ios::sync_with_stdio(0);
	scanf("%d %d",&n,&k);
	for(int i=0;i<n;i++)
	{
		int d=0;
		scanf("%d",&d);
		while(d--)
		{
			int x;
			scanf("%d",&x);
			ma[i].set(x);
		}
	}
	for(int i=0;i<n;i++)
		x[i]=1;
	int s=0;		
	recur(s);
	printf("%d",mx);
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

politicaldevelopment.cpp: In function 'int main()':
politicaldevelopment.cpp:28:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   28 |  scanf("%d %d",&n,&k);
      |  ~~~~~^~~~~~~~~~~~~~~
politicaldevelopment.cpp:32:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |   scanf("%d",&d);
      |   ~~~~~^~~~~~~~~
politicaldevelopment.cpp:36:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   36 |    scanf("%d",&x);
      |    ~~~~~^~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 12 / 12
• Subtask 3: 23 / 23
• Subtask 4: 0 / 38
• Subtask 5: 23 / 23