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Submission #208167

# Submission time Handle Problem Language Result Execution time Memory
208167 2020-03-10T06:51:05 Z SMani24 Ice Hockey World Championship (CEOI15_bobek) C++11
100 / 100
 272 ms 16888 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[1 << (N / 2)], dpd[1 << (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

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 376 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 504 KB Output is correct
7 Correct 4 ms 376 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 380 KB Output is correct
2 Correct 5 ms 376 KB Output is correct
3 Correct 5 ms 376 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 5 ms 376 KB Output is correct
6 Correct 5 ms 376 KB Output is correct
7 Correct 5 ms 376 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 2040 KB Output is correct
2 Correct 65 ms 4472 KB Output is correct
3 Correct 267 ms 16760 KB Output is correct
4 Correct 65 ms 4472 KB Output is correct
5 Correct 12 ms 1400 KB Output is correct
6 Correct 11 ms 888 KB Output is correct
7 Correct 15 ms 1400 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 2424 KB Output is correct
2 Correct 25 ms 1912 KB Output is correct
3 Correct 97 ms 8568 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 8 ms 888 KB Output is correct
6 Correct 19 ms 1400 KB Output is correct
7 Correct 16 ms 1400 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 47 ms 3448 KB Output is correct
2 Correct 95 ms 6524 KB Output is correct
3 Correct 93 ms 6620 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 42 ms 6648 KB Output is correct
6 Correct 212 ms 16760 KB Output is correct
7 Correct 77 ms 6648 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 188 ms 12668 KB Output is correct
2 Correct 24 ms 1912 KB Output is correct
3 Correct 11 ms 888 KB Output is correct
4 Correct 5 ms 376 KB Output is correct
5 Correct 8 ms 888 KB Output is correct
6 Correct 181 ms 12664 KB Output is correct
7 Correct 15 ms 1400 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 25 ms 1912 KB Output is correct
2 Correct 65 ms 4472 KB Output is correct
3 Correct 11 ms 888 KB Output is correct
4 Correct 11 ms 892 KB Output is correct
5 Correct 48 ms 6520 KB Output is correct
6 Correct 24 ms 1912 KB Output is correct
7 Correct 208 ms 16876 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 261 ms 16760 KB Output is correct
2 Correct 25 ms 1916 KB Output is correct
3 Correct 11 ms 888 KB Output is correct
4 Correct 272 ms 16888 KB Output is correct
5 Correct 65 ms 8568 KB Output is correct
6 Correct 16 ms 1528 KB Output is correct
7 Correct 27 ms 2516 KB Output is correct