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답안 #118796

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
118796 2019-06-19T18:45:07 Z silxikys Ice Hockey World Championship (CEOI15_bobek) C++14
100 / 100
 770 ms 8676 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
 
const int maxn = 40;
 
int N;
ll M;
ll A[maxn], B[maxn];
 
int main()
{
	cin >> N >> M;
    ll tot = 0;
	int split = N/2;
	for (int i = 0; i < split; i++) {
		cin >> A[i];
        tot += A[i];
	}
    for (int i = split; i < N; i++) {
        cin >> B[i-split];
        tot += B[i-split];
    }
    if (tot <= M) {
        cout << (1LL<<N) << '\n';
        return 0;
    }
    vector<ll> as;
	for (int i = 0; i < (1<<split); i++) {
        ll total = 0;
        for (int j = 0; j < split; j++) {
            if (i & (1<<j)) total += A[j];
            if (total > M) {
                break;
            }
        }
        if (total <= M) as.push_back(total);
    }
    sort(as.begin(),as.end());
 
    ll ans = 0;
    for (int i = 0; i < (1<<(N-split)); i++) {
        ll total = 0;
        for (int j = 0; j < N-split; j++) {
            if (i & (1<<j)) total += B[j];
            if (total > M) {
                break;
            }
        }
        if (total <= M) {
            auto it = upper_bound(as.begin(),as.end(),M-total);
            ans += distance(as.begin(),it);
        }
    }
    cout << ans << '\n';
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 1 ms 252 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 256 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 2 ms 256 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 384 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 2 ms 384 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 384 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 31 ms 1020 KB Output is correct
2 Correct 105 ms 2548 KB Output is correct
3 Correct 448 ms 8648 KB Output is correct
4 Correct 103 ms 2548 KB Output is correct
5 Correct 16 ms 1020 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 3 ms 384 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 46 ms 1528 KB Output is correct
2 Correct 36 ms 1020 KB Output is correct
3 Correct 206 ms 4584 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 9 ms 640 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 3 ms 256 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 76 ms 1528 KB Output is correct
2 Correct 200 ms 2548 KB Output is correct
3 Correct 155 ms 2548 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 93 ms 2548 KB Output is correct
6 Correct 3 ms 256 KB Output is correct
7 Correct 6 ms 256 KB Output is correct

Subtask #8
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 333 ms 4584 KB Output is correct
2 Correct 31 ms 1020 KB Output is correct
3 Correct 11 ms 768 KB Output is correct
4 Correct 2 ms 384 KB Output is correct
5 Correct 10 ms 640 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 384 KB Output is correct

Subtask #9
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 33 ms 1020 KB Output is correct
2 Correct 100 ms 2548 KB Output is correct
3 Correct 10 ms 768 KB Output is correct
4 Correct 10 ms 768 KB Output is correct
5 Correct 119 ms 2548 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 11 ms 384 KB Output is correct

Subtask #10
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 419 ms 8676 KB Output is correct
2 Correct 41 ms 1020 KB Output is correct
3 Correct 11 ms 768 KB Output is correct
4 Correct 770 ms 8668 KB Output is correct
5 Correct 135 ms 4592 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 4 ms 384 KB Output is correct