Submission #1005035

#	Time	Username	Problem	Language	Result	Execution time	Memory
1005035		erering	Ice Hockey World Championship (CEOI15_bobek)	C++17	100 / 100	255 ms	10192 KiB

bobek

#include <bits/stdc++.h>
using namespace std;
#define endl '\n'
#define pb push_back
#define ll long long
#define int long long
const long long inf=1e18;
const int MOD=1e9+7;
const int N=41;
int a[N],n,m,ans=0;
bool flag=0;
vector<int> v;
void func(int i,int score){
    if(flag && i==n/2){
        auto it=upper_bound(v.begin(),v.end(),m-score)-v.begin();
        ans+=it;
        return;
    }
    if(i==n){
       v.pb(score);
        return;
    }
    func(i+1,score);
    if(score+a[i]<=m)func(i+1,score+a[i]);
}
signed main()
{
   ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin>>n>>m;
    for(int i=0;i<n;i++)cin>>a[i];
    func(n/2,0);
    flag=1;
    sort(v.begin(),v.end());
    func(0,0);
    cout<<ans;
}

• 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