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답안 #267144

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
267144 2020-08-15T21:51:55 Z shrek12357 Ice Hockey World Championship (CEOI15_bobek) C++14
100 / 100
 610 ms 20820 KB 
#include<bits/stdc++.h>
#define endl '\n'
#define pii pair<int,int>
#define fi first
#define se second
#define ll long long 
#define pb push_back
#define all(x) x.begin(),x.end()
#pragma GCC optimize ("Ofast","unroll-loops")
using namespace std;
const int MOD = 1e9+7;
const int MAXN = 50;
ll  ans  = 0 ;
ll  n, m ;
void solve(ll idx  ,  ll  sum , vector<ll> arr ,  vector<ll> &v  )
{
    if(idx==arr.size() )
    {
    if(sum<=m)v.push_back(sum);
    	return ; 
    }
    solve(idx+1,sum,arr,v);
    solve(idx+1,sum+arr[idx],arr,v);
}
int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> m ;
    vector<ll> a , b ;
    for(ll  i=1;i<=n;i++)
    {
    	ll x;
    	cin >> x ; 
    	if(i%2==0)
    	{
    	  a.push_back(x);
    	}
    	else
    	{
    	  b.push_back(x);
    	}
    }
    vector<ll> v1,v2;
    solve(0,0,a,v1);
    solve(0,0,b,v2);
    sort(all(v1));
    sort(all(v2));
    for(auto  it : v1)
    {
    	 ll l = 0 ;
    	 ll  r= v2.size()-1;
    	 ll  x = -1 ;
    	 while (l<=r)
    	 {
    	 	ll mid =(l+r)>>1;
    	 	if(v2[mid]+it<=m)
    	 	{
    	 		x=mid;
    	 		l=mid+1;
    	 	}
    	 	else r= mid-1;
    	 }
    	 if(x!=-1)ans+=(x+1);
    }
    cout<<ans<<endl;
    return 0 ;
}

Compilation message

bobek.cpp: In function 'void solve(long long int, long long int, std::vector<long long int>, std::vector<long long int>&)':
bobek.cpp:17:11: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     if(idx==arr.size() )
      |        ~~~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 320 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 0 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 0 ms 384 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 50 ms 2040 KB Output is correct
2 Correct 149 ms 5476 KB Output is correct
3 Correct 610 ms 20820 KB Output is correct
4 Correct 162 ms 5484 KB Output is correct
5 Correct 35 ms 1656 KB Output is correct
6 Correct 14 ms 1024 KB Output is correct
7 Correct 18 ms 384 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 79 ms 3048 KB Output is correct
2 Correct 52 ms 2040 KB Output is correct
3 Correct 300 ms 10588 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 11 ms 1024 KB Output is correct
6 Correct 39 ms 1656 KB Output is correct
7 Correct 17 ms 384 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 104 ms 3564 KB Output is correct
2 Correct 207 ms 6648 KB Output is correct
3 Correct 207 ms 6624 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 159 ms 6628 KB Output is correct
6 Correct 538 ms 20820 KB Output is correct
7 Correct 106 ms 288 KB Output is correct

Subtask #8
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 423 ms 12756 KB Output is correct
2 Correct 50 ms 2032 KB Output is correct
3 Correct 14 ms 1024 KB Output is correct
4 Correct 1 ms 384 KB Output is correct
5 Correct 11 ms 1024 KB Output is correct
6 Correct 431 ms 12756 KB Output is correct
7 Correct 18 ms 384 KB Output is correct

Subtask #9
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 52 ms 2032 KB Output is correct
2 Correct 143 ms 5452 KB Output is correct
3 Correct 15 ms 1024 KB Output is correct
4 Correct 15 ms 1024 KB Output is correct
5 Correct 166 ms 6688 KB Output is correct
6 Correct 48 ms 2032 KB Output is correct
7 Correct 298 ms 392 KB Output is correct

Subtask #10
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 592 ms 20820 KB Output is correct
2 Correct 51 ms 2032 KB Output is correct
3 Correct 13 ms 1024 KB Output is correct
4 Correct 593 ms 20820 KB Output is correct
5 Correct 237 ms 10556 KB Output is correct
6 Correct 33 ms 1656 KB Output is correct
7 Correct 38 ms 384 KB Output is correct