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답안 #208166

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
208166 2020-03-10T06:47:36 Z SMani24 Ice Hockey World Championship (CEOI15_bobek) C++11
10 / 100
 6 ms 632 KB 
//In the name of Allah
//SMani24
#include<bits/stdc++.h>
#define debug(x) cerr << #x << " = " << x << endl
#define int long long
using namespace std;

const int N = 42;

int n, m, ans;
int a[N], dpu[N / 2], dpd[N / 2], prep[1 << (N / 2)];

void set_prep() {
    for (int i = 0; i < N / 2; i++)
        prep[1 << i] = i;
}

void read_input() {
    cin >> n >> m;
    for (int i = 0; i < n; i++)
        cin >> a[i];
}
void solve() {
    set_prep();
    int nu = n / 2, nd = (n + 1) / 2;
    for (int mask = 1; mask < (1 << nu); mask++)
        dpu[mask] = dpu[mask ^ (mask & -mask)] + a[prep[mask & -mask]];
    for (int mask = 1; mask < (1 << nd); mask++)
        dpd[mask] = dpd[mask ^ (mask & -mask)] + a[prep[mask & -mask] + nu];
    sort(dpu, dpu + (1 << nu));
    sort(dpd, dpd + (1 << nd));
    for (int i = 0; i < (1 << nu); i++) {
        if (dpu[i] > m)
            break;
        ans += upper_bound(dpd, dpd + (1 << nd), m - dpu[i]) - dpd;
    }
}
void write_output() {
    cout << ans << endl;
}

int32_t main() {
    ios :: sync_with_stdio(0), cin.tie(0), cout.tie(0);
    read_input(), solve(), write_output();
    return 0;
}

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 376 KB Output is correct

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 5 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 6 ms 632 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 6 ms 632 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 6 ms 632 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 6 ms 504 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 6 ms 632 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 6 ms 632 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 6 ms 632 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 6 ms 632 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -