제출 #1219271

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1219271		mariamtsagareli	Ice Hockey World Championship (CEOI15_bobek)	C++20	100 / 100	298 ms	8624 KiB

bobek

#include <bits/stdc++.h>
#define endl '\n'
using namespace std;
const int n = 44;
int a,b;
long long c,d,e[n];
vector < long long > f;
void g(int h, long long i) {
  if(h>b) {
    f.push_back(i);
    return;
  }

  g(h+1,i);
  g(h+1,i+e[h]);
}

void j(int k, long long l) {
  if(k>a) {
    c+=(int)(upper_bound(f.begin(),f.end(),d-l)-f.begin());
    return;
  }

  j(k+1,l);
  j(k+1,l+e[k]);
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  int m;

  cin >> a >> d;
  for(m=1;m<=a;m++) {
    cin >> e[m];
  }

  b=a/2;

  g(1,0);
  sort(f.begin(),f.end());
  j(b+1,0);

  cout << c << endl;

  return 0;
}

• 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