Submission #73187544

Source Code Expand

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define all(a)  (a).begin(),(a).end()

using P=pair<ll,ll>;
using T=tuple<ll,ll,ll>;

#include <atcoder/all> 
using namespace atcoder;
// using mint=modint998244353;
// using mint=modint1000000007;
// int op(int a,int b){return (a+b);}
// int e(){return 0;}

int main() {
  ll n,s;cin>>n>>s;

  vector<ll> a(n);
  rep(i,n)cin>>a[i];

  ll m=n/2;

  // vector<ll> l;
  
  // for(int tmp=0;tmp<pow(2,m);tmp++){
  //   bitset<20> b(tmp);
  //   ll sum=0;
  //   rep(i,m){
  //     if(b.test(i))sum+=a[i];
  //   }
  //   l.push_back(sum);
  // }
  map<ll,ll> l;
  for(int tmp=0;tmp<pow(2,m);tmp++){
    bitset<20> b(tmp);
    ll sum=0;
    for(int i=0;i<m;i++){
      if(b.test(i))sum+=a[i];
    }
    // cout<<sum<<endl;
    l[sum]++;
  }

  map<ll,ll> r;
  for(int tmp=0;tmp<pow(2,n-m);tmp++){
    bitset<20> b(tmp);
    ll sum=0;
    for(int i=m;i<n;i++){
      if(b.test(i-m))sum+=a[i];
    }
    // cout<<sum<<endl;
    r[sum]++;
  }

  ll ans=0;
  for(auto [k,v]:l){
    if(r.count(s-k))ans+=r[s-k]*v;
  }

  cout<<ans<<endl;

}

Submission Info

Submission Time
Task E - Assortment of Sweets
User Shota_Otsuka
Language C++23 (GCC 15.2.0)
Score 433
Code Size 1215 Byte
Status AC
Exec Time 1614 ms
Memory 134896 KiB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 433 / 433
Status
AC × 3
AC × 71
Set Name Test Cases
Sample sample01.txt, sample02.txt, sample03.txt
All sample01.txt, sample02.txt, sample03.txt, in01.txt, in02.txt, in03.txt, in04.txt, in05.txt, in06.txt, in07.txt, in08.txt, in09.txt, in10.txt, in11.txt, in12.txt, in13.txt, in14.txt, in15.txt, in16.txt, in17.txt, in18.txt, in19.txt, in20.txt, in21.txt, in22.txt, in23.txt, in24.txt, in25.txt, in26.txt, in27.txt, in28.txt, in29.txt, in30.txt, in31.txt, in32.txt, in33.txt, in34.txt, in35.txt, in36.txt, in37.txt, in38.txt, in39.txt, in40.txt, in41.txt, in42.txt, in43.txt, in44.txt, in45.txt, in46.txt, in47.txt, in48.txt, in49.txt, in50.txt, in51.txt, in52.txt, in53.txt, in54.txt, in55.txt, in56.txt, in57.txt, in58.txt, in59.txt, in60.txt, in61.txt, in62.txt, in63.txt, in64.txt, in65.txt, in66.txt, in67.txt, in68.txt
Case Name Status Exec Time Memory
in01.txt AC 1 ms 3632 KiB
in02.txt AC 1 ms 3616 KiB
in03.txt AC 1 ms 3720 KiB
in04.txt AC 1 ms 3776 KiB
in05.txt AC 1 ms 3836 KiB
in06.txt AC 203 ms 3688 KiB
in07.txt AC 1614 ms 134848 KiB
in08.txt AC 319 ms 4816 KiB
in09.txt AC 829 ms 134848 KiB
in10.txt AC 171 ms 3696 KiB
in11.txt AC 1 ms 3644 KiB
in12.txt AC 1468 ms 134724 KiB
in13.txt AC 171 ms 3676 KiB
in14.txt AC 1504 ms 134772 KiB
in15.txt AC 1498 ms 134840 KiB
in16.txt AC 1435 ms 134776 KiB
in17.txt AC 225 ms 3832 KiB
in18.txt AC 172 ms 3688 KiB
in19.txt AC 226 ms 3888 KiB
in20.txt AC 223 ms 3836 KiB
in21.txt AC 225 ms 3784 KiB
in22.txt AC 1513 ms 134832 KiB
in23.txt AC 226 ms 3904 KiB
in24.txt AC 248 ms 4092 KiB
in25.txt AC 1 ms 3708 KiB
in26.txt AC 1 ms 3780 KiB
in27.txt AC 10 ms 4360 KiB
in28.txt AC 1 ms 3652 KiB
in29.txt AC 1 ms 3708 KiB
in30.txt AC 1355 ms 133896 KiB
in31.txt AC 1434 ms 134776 KiB
in32.txt AC 1 ms 3776 KiB
in33.txt AC 1 ms 3728 KiB
in34.txt AC 1 ms 3768 KiB
in35.txt AC 1 ms 3824 KiB
in36.txt AC 821 ms 134728 KiB
in37.txt AC 1438 ms 134688 KiB
in38.txt AC 1384 ms 134724 KiB
in39.txt AC 1504 ms 134756 KiB
in40.txt AC 1424 ms 134760 KiB
in41.txt AC 1399 ms 134800 KiB
in42.txt AC 1567 ms 134848 KiB
in43.txt AC 1519 ms 134608 KiB
in44.txt AC 2 ms 3832 KiB
in45.txt AC 1289 ms 134780 KiB
in46.txt AC 1408 ms 134840 KiB
in47.txt AC 1549 ms 134780 KiB
in48.txt AC 1505 ms 134736 KiB
in49.txt AC 1566 ms 134640 KiB
in50.txt AC 1520 ms 134896 KiB
in51.txt AC 226 ms 3848 KiB
in52.txt AC 1515 ms 134728 KiB
in53.txt AC 1 ms 3688 KiB
in54.txt AC 1 ms 3576 KiB
in55.txt AC 1 ms 3760 KiB
in56.txt AC 1 ms 3824 KiB
in57.txt AC 219 ms 3872 KiB
in58.txt AC 219 ms 3872 KiB
in59.txt AC 823 ms 134800 KiB
in60.txt AC 826 ms 134772 KiB
in61.txt AC 1 ms 3768 KiB
in62.txt AC 1 ms 3728 KiB
in63.txt AC 1 ms 3688 KiB
in64.txt AC 1 ms 3760 KiB
in65.txt AC 1 ms 3728 KiB
in66.txt AC 1 ms 3760 KiB
in67.txt AC 1 ms 3700 KiB
in68.txt AC 1 ms 3760 KiB
sample01.txt AC 1 ms 3616 KiB
sample02.txt AC 1 ms 3656 KiB
sample03.txt AC 1 ms 3652 KiB