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답안 #958923

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
958923 2024-04-07T06:07:39 Z Ghetto Ice Hockey World Championship (CEOI15_bobek) C++17
100 / 100
 419 ms 10428 KB 
#include <bits/stdc++.h>
using namespace std;
using lint = long long;
const int MAX_N = 40 + 2;

int n;
lint m;
lint c[MAX_N];

void solve_edge() {
    if (n != 1) return;
    lint ans = 1 + (bool) (c[1] <= m);
    cout << ans << '\n';
    exit(0);
}

int size1, size2;
vector<lint> ord_costs;
void precomp() {
    size1 = n / 2;
    size2 = n - n / 2;

    for (int mask = 0; mask < (1 << size2); mask++) {
        lint cost = 0;
        for (int b = 0; b < size2; b++) {
            if (!(mask & (1 << b))) continue;
            cost += c[n / 2 + 1 + b];
        }
        ord_costs.push_back(cost);
    }
    sort(ord_costs.begin(), ord_costs.end());
}

int main() {
    // freopen("ice.in", "r", stdin);

    cin >> n >> m;
    for (int i = 1; i <= n; i++) cin >> c[i];

    solve_edge();
    precomp();

    lint ans = 0;
    for (int mask = 0; mask < (1 << size1); mask++) {
        lint cost = 0;
        for (int b = 0; b < size1; b++) {
            if (!(mask & (1 << b))) continue;
            cost += c[1 + b];
        }

        lint tar_cost = m - cost;
        lint tar_ind = upper_bound(ord_costs.begin(), ord_costs.end(), tar_cost) - ord_costs.begin();
        ans += tar_ind;
    }
    cout << ans << '\n';

}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 600 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #4
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 360 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 1 ms 348 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 1492 KB Output is correct
2 Correct 85 ms 2540 KB Output is correct
3 Correct 396 ms 9928 KB Output is correct
4 Correct 83 ms 2508 KB Output is correct
5 Correct 14 ms 980 KB Output is correct
6 Correct 6 ms 728 KB Output is correct
7 Correct 13 ms 984 KB Output is correct

Subtask #6
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 37 ms 1492 KB Output is correct
2 Correct 28 ms 1492 KB Output is correct
3 Correct 165 ms 6348 KB Output is correct
4 Correct 0 ms 344 KB Output is correct
5 Correct 6 ms 728 KB Output is correct
6 Correct 15 ms 980 KB Output is correct
7 Correct 13 ms 984 KB Output is correct

Subtask #7
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 55 ms 2512 KB Output is correct
2 Correct 123 ms 4812 KB Output is correct
3 Correct 129 ms 6196 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 73 ms 6496 KB Output is correct
6 Correct 220 ms 9672 KB Output is correct
7 Correct 88 ms 4812 KB Output is correct

Subtask #8
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 265 ms 9152 KB Output is correct
2 Correct 26 ms 1488 KB Output is correct
3 Correct 9 ms 728 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 7 ms 728 KB Output is correct
6 Correct 193 ms 10428 KB Output is correct
7 Correct 13 ms 984 KB Output is correct

Subtask #9
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 27 ms 1488 KB Output is correct
2 Correct 83 ms 2512 KB Output is correct
3 Correct 8 ms 728 KB Output is correct
4 Correct 8 ms 980 KB Output is correct
5 Correct 89 ms 6348 KB Output is correct
6 Correct 22 ms 1556 KB Output is correct
7 Correct 229 ms 10424 KB Output is correct

Subtask #10
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 317 ms 9592 KB Output is correct
2 Correct 32 ms 1488 KB Output is correct
3 Correct 8 ms 728 KB Output is correct
4 Correct 419 ms 9408 KB Output is correct
5 Correct 114 ms 5580 KB Output is correct
6 Correct 13 ms 980 KB Output is correct
7 Correct 26 ms 1480 KB Output is correct