답안 #82962 :: oj.uz

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
82962	2018-11-03T09:55:24 Z	Vasiljko	Ice Hockey World Championship (CEOI15_bobek)	C++14	100 / 100	282 ms	21140 KB

bobek

#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
const ll MOD = 1e9+7;
const int N = 50;

int n;
ll m,a[N],b[N],ans;
vector<ll>S1,S2;

void Fill(vector<ll>&S,int ind,int len,ll sum){
    if(ind==len+1){
        S.push_back(sum);
        return;
    }
    Fill(S,ind+1,len,sum);
    if(sum+b[ind]<=m)Fill(S,ind+1,len,sum+b[ind]);
}

void Gen(vector<ll>&S,int len){
    Fill(S,1,len,0);
}


int main()
{
    ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }

    if(n==1){
        if(a[1]<=m)cout<<2;
        else cout<<1;
        return 0;
    }

    int len=n/2;

    for(int i=1;i<=n/2;i++)b[i]=a[i];
    Fill(S1,1,len,0);
    for(int i=n/2+1;i<=n;i++)b[i-n/2]=a[i];
    Fill(S2,1,n-len,0);

    sort(S1.begin(),S1.end());
    sort(S2.begin(),S2.end());
    reverse(S2.begin(),S2.end());

    int prev=0;
    for(auto e:S2){
        ll val=m-e;
        int l=prev;
        int r=(int)S1.size()-1;
        int sol=0;

        while(l<=r){
            int mid=(l+r)>>1;
            if(S1[mid]<=val){
                sol=mid;
                l=mid+1;
            }else{
                r=mid-1;
            }
        }
        prev=sol;
        ans+=1LL*(sol+1);
    }

    cout<<ans;
    return 0;
}

Subtask #1
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	3 ms	348 KB	Output is correct

Subtask #2
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	508 KB	Output is correct
2	Correct	2 ms	556 KB	Output is correct
3	Correct	2 ms	556 KB	Output is correct
4	Correct	2 ms	556 KB	Output is correct
5	Correct	2 ms	556 KB	Output is correct
6	Correct	2 ms	636 KB	Output is correct
7	Correct	2 ms	636 KB	Output is correct

Subtask #3
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	636 KB	Output is correct
2	Correct	2 ms	636 KB	Output is correct
3	Correct	2 ms	636 KB	Output is correct
4	Correct	2 ms	636 KB	Output is correct
5	Correct	2 ms	636 KB	Output is correct
6	Correct	2 ms	636 KB	Output is correct
7	Correct	2 ms	636 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	636 KB	Output is correct
2	Correct	3 ms	636 KB	Output is correct
3	Correct	2 ms	636 KB	Output is correct
4	Correct	2 ms	720 KB	Output is correct
5	Correct	2 ms	720 KB	Output is correct
6	Correct	2 ms	720 KB	Output is correct
7	Correct	2 ms	720 KB	Output is correct

Subtask #5
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	23 ms	2264 KB	Output is correct
2	Correct	64 ms	5712 KB	Output is correct
3	Correct	282 ms	21140 KB	Output is correct
4	Correct	72 ms	21140 KB	Output is correct
5	Correct	13 ms	21140 KB	Output is correct
6	Correct	8 ms	21140 KB	Output is correct
7	Correct	2 ms	21140 KB	Output is correct

Subtask #6
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	30 ms	21140 KB	Output is correct
2	Correct	25 ms	21140 KB	Output is correct
3	Correct	111 ms	21140 KB	Output is correct
4	Correct	3 ms	21140 KB	Output is correct
5	Correct	6 ms	21140 KB	Output is correct
6	Correct	20 ms	21140 KB	Output is correct
7	Correct	2 ms	21140 KB	Output is correct

Subtask #7
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	48 ms	21140 KB	Output is correct
2	Correct	119 ms	21140 KB	Output is correct
3	Correct	102 ms	21140 KB	Output is correct
4	Correct	2 ms	21140 KB	Output is correct
5	Correct	55 ms	21140 KB	Output is correct
6	Correct	209 ms	21140 KB	Output is correct
7	Correct	2 ms	21140 KB	Output is correct

Subtask #8
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	236 ms	21140 KB	Output is correct
2	Correct	23 ms	21140 KB	Output is correct
3	Correct	9 ms	21140 KB	Output is correct
4	Correct	2 ms	21140 KB	Output is correct
5	Correct	7 ms	21140 KB	Output is correct
6	Correct	177 ms	21140 KB	Output is correct
7	Correct	3 ms	21140 KB	Output is correct

Subtask #9
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	25 ms	21140 KB	Output is correct
2	Correct	80 ms	21140 KB	Output is correct
3	Correct	9 ms	21140 KB	Output is correct
4	Correct	9 ms	21140 KB	Output is correct
5	Correct	72 ms	21140 KB	Output is correct
6	Correct	22 ms	21140 KB	Output is correct
7	Correct	2 ms	21140 KB	Output is correct

Subtask #10
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	264 ms	21140 KB	Output is correct
2	Correct	26 ms	21140 KB	Output is correct
3	Correct	11 ms	21140 KB	Output is correct
4	Correct	282 ms	21140 KB	Output is correct
5	Correct	93 ms	21140 KB	Output is correct
6	Correct	17 ms	21140 KB	Output is correct
7	Correct	2 ms	21140 KB	Output is correct

답안 #82962

Compilation message