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Submission #445912

# Submission time Handle Problem Language Result Execution time Memory
445912 2021-07-20T07:28:56 Z snasibov05 Ice Hockey World Championship (CEOI15_bobek) C++14
100 / 100
 486 ms 8620 KB 
#include <iostream>
#include <vector>
#include <algorithm>

using namespace std;

#define ll long long
#define pb push_back

int main() {
    int n; ll m; cin >> n >> m;
    vector<ll> v(n);
    for (int i = 0; i < n; ++i) {
        cin >> v[i];
    }

    int mid = (n-1) / 2;
    vector<ll> p1;
    for (int i = 0; i < (1 << (mid+1)); ++i) {
        ll sum = 0;
        int x = i;
        for (int j = 0; j <= mid; ++j) {
            if (x % 2 == 1) sum += v[j];
            x /= 2;
        }
        if (sum <= m) p1.pb(sum);
    }

    sort(p1.begin(), p1.end());

    ll ans = 0;
    for (int i = 0; i < (1 << (n - mid - 1)); ++i) {
        ll sum = 0;
        int x = i;
        for (int j = mid + 1; j < n; ++j) {
            if (x % 2 == 1) sum += v[j];
            x /= 2;
        }
        if (sum > m) continue;
        int k = upper_bound(p1.begin(), p1.end(), m - sum) - p1.begin();
        ans += 1ll * k;
    }

    cout << ans << "\n";


    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 0 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 1416 KB Output is correct
2 Correct 103 ms 2496 KB Output is correct
3 Correct 481 ms 8620 KB Output is correct
4 Correct 101 ms 2368 KB Output is correct
5 Correct 16 ms 840 KB Output is correct
6 Correct 7 ms 672 KB Output is correct
7 Correct 8 ms 204 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 44 ms 1424 KB Output is correct
2 Correct 33 ms 1348 KB Output is correct
3 Correct 201 ms 4548 KB Output is correct
4 Correct 0 ms 204 KB Output is correct
5 Correct 8 ms 620 KB Output is correct
6 Correct 15 ms 840 KB Output is correct
7 Correct 8 ms 204 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 71 ms 2484 KB Output is correct
2 Correct 160 ms 4528 KB Output is correct
3 Correct 155 ms 4540 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 91 ms 4532 KB Output is correct
6 Correct 249 ms 8604 KB Output is correct
7 Correct 47 ms 204 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 308 ms 8592 KB Output is correct
2 Correct 32 ms 1436 KB Output is correct
3 Correct 10 ms 588 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 8 ms 588 KB Output is correct
6 Correct 216 ms 8528 KB Output is correct
7 Correct 8 ms 204 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 1348 KB Output is correct
2 Correct 98 ms 2452 KB Output is correct
3 Correct 10 ms 588 KB Output is correct
4 Correct 10 ms 588 KB Output is correct
5 Correct 98 ms 4448 KB Output is correct
6 Correct 25 ms 1348 KB Output is correct
7 Correct 130 ms 204 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 414 ms 8544 KB Output is correct
2 Correct 35 ms 1404 KB Output is correct
3 Correct 10 ms 588 KB Output is correct
4 Correct 486 ms 8516 KB Output is correct
5 Correct 141 ms 4540 KB Output is correct
6 Correct 15 ms 840 KB Output is correct
7 Correct 16 ms 296 KB Output is correct