제출 #389834

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
389834		ogibogi2004	Pinball (JOI14_pinball)	C++14	0 / 100	1 ms	204 KiB

pinball

#include<bits/stdc++.h>
using namespace std;
#define ll long long
const ll INF=2e15;
const int MAXM=1e5+6;
struct device
{
	ll row,a,b,c,d;
	bool operator<(device const& other)const
	{
		return c<other.c;
	}
};
device d[MAXM];
int n,m;
bool check(int mask)
{
	if(mask==0)return 0;
	vector<device>v;
	int maxj=-1;
	for(int j=0;j<m;j++)
	{
		if(mask&(1<<j)){v.push_back(d[j+2]);maxj=j+2;}
	}
	sort(v.begin(),v.end());
	for(int i=0;i<v.size();i++)
	{
		if(v[i].row==maxj)
		{
			for(int j=i-1;j>=0;j--)
			{
				if(v[j].row<v[j+1].row)
				{
					return 0;
				}
			}
			for(int j=i+1;j<v.size();j++)
			{
				if(v[j].row<v[j-1].row)
				{
					return 0;
				}
			}
		}
	}
	return 1;
}
int main()
{
	cin>>m>>n;
	for(int i=2;i<m+2;i++)
	{
		d[i].row=i;
		cin>>d[i].a>>d[i].b>>d[i].c>>d[i].d;
	}
	ll ans=INF;
	for(int mask=0;mask<(1<<m);mask++)
	{
		if(!check(mask))continue;
		set<int>s;
		for(int i=1;i<=n;i++)
		{
			int u=i;
			for(int j=2;j<m+2;j++)
			{
				if(mask&(1<<(j-2)))
				{
					if(d[j].a<=u&&d[j].b>=u)
					{
						u=d[j].c;
					}
				}
			}
			s.insert(u);
		}
		if(s.size()>1)
		{
			continue;
		}
		ll sum=0;
		for(int j=2;j<m+2;j++)
		{
			if(mask&(1<<(j-2)))
			{
				sum+=d[j].d;
			}
		}
		if(sum<ans)ans=sum;
	}
	if(ans==INF)cout<<"-1\n";
	else cout<<ans<<endl;
return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

pinball.cpp: In function 'bool check(int)':
pinball.cpp:26:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<device>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |  for(int i=0;i<v.size();i++)
      |              ~^~~~~~~~~
pinball.cpp:37:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<device>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   37 |    for(int j=i+1;j<v.size();j++)
      |                  ~^~~~~~~~~

• Subtask 1: 0 / 11
• Subtask 2: 0 / 18
• Subtask 3: 0 / 22
• Subtask 4: 0 / 49