Submission #197341

#	Time	Username	Problem	Language	Result	Execution time	Memory
197341		nafis_shifat	Ice Hockey World Championship (CEOI15_bobek)	C++14	0 / 100	254 ms	20824 KiB

bobek

#include<bits/stdc++.h>
#define pii pair<int,int>
#define ll long long
using namespace std;

vector<ll> v1;
vector<ll> v2;


ll a[45];

ll clc(int mask,int b,int e,ll m)
{
	ll cur=0;
	for(int i=b,j=1;i<=e;i++,j++)
	{
		if((mask>>(j-1))&1)
		{
			if(cur+a[i]>m)return -1;
			cur+=a[i];			
		}
	}
	return cur;
}
int main()
{
	int n;
	cin>>n;
	int m;
	cin>>m;
	int m1=n/2;
	int m2=n-m1;





	for(int i=1;i<=n;i++)
	{
		cin>>a[i];
	}



	for(int i=0;i<(1<<m1)-1;i++)
	{
		ll c=clc(i,1,m1,m);
		if(c!=-1)v1.push_back(c);
	}


	for(int i=0;i<(1<<m2)-1;i++)
	{
		ll c=clc(i,m1+1,n,m);
		if(c!=-1)v2.push_back(c);
	}
	

	sort(v2.begin(),v2.end());

	ll rs=0;



	for(int i=0;i<v1.size();i++)
	{
		ll cur=v1[i];
		ll r=m-cur;

		ll d=upper_bound(v2.begin(),v2.end(),r)-v2.begin();
	
		rs+=d;
		
		

	}

	cout<<rs<<endl;





	



	return 0;
}

Compilation message (stderr)

bobek.cpp: In function 'int main()':
bobek.cpp:65:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<v1.size();i++)
              ~^~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10