Submission #104300

#	Time	Username	Problem	Language	Result	Execution time	Memory
104300		tduong0806	Ice Hockey World Championship (CEOI15_bobek)	C++14	100 / 100	453 ms	8692 KiB

bobek

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N=42;
int n,x[N];
ll a[N],m,kq;
vector<ll> e;
void duyet(int i,int l,ll s)
{
    if(i==l+1)
    {
        if(l==n/2) e.push_back(s);
        else kq+=upper_bound(e.begin(),e.end(),m-s)-e.begin();
        return;
    }
    duyet(i+1,l,s);
    duyet(i+1,l,s+a[i]);
}
int main()
{
    cin>>n>>m;
    for(int i=1;i<=n;++i) cin>>a[i];
    duyet(1,n/2,0);
    sort(e.begin(),e.end());
    duyet(n/2+1,n,0);
    cout<<kq;
}

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