oj.uz

Submission #1054087

# Submission time Handle Problem Language Result Execution time Memory
1054087 2024-08-12T06:10:24 Z otarius Ice Hockey World Championship (CEOI15_bobek) C++17
100 / 100
 305 ms 10656 KB 
#include <bits/stdc++.h>
#include <bits/extc++.h>
using namespace __gnu_pbds;
using namespace std;

// #pragma GCC optimize("Ofast")
// #pragma GCC optimize ("unroll-loops")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#define ff first
#define sc second
#define pb push_back
#define ll long long
#define pll pair<ll, ll>
#define pii pair<int, int>
#define ull unsigned long long
#define all(x) (x).begin(),(x).end()

#define int long long
// #define int unsigned long long

// #define ordered_set(T) tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>
// #define ordered_multiset(T) tree<T, null_type, less_equal<T>, rb_tree_tag, tree_order_statistics_node_update>

void open_file(string filename) {
    freopen((filename + ".in").c_str(), "r", stdin);
    freopen((filename + ".out").c_str(), "w", stdout);
}

// const ll mod = 1e9 + 7;
// const ll mod = 998244353;

const ll inf = 1e9;
const ll biginf = 1e18;
// const int maxN;

void solve() {
    int n, mx;
    cin >> n >> mx;
    int arr[n + 1];
    for (int i = 1; i <= n; i++)
        cin >> arr[i];
    vector<int> a, b, sums;
    for (int i = 1; i <= n / 2; i++)
        a.push_back(arr[i]);
    for (int i = n / 2 + 1; i <= n; i++)
        b.push_back(arr[i]);
    int m = a.size(); ll cur;
    for (int i = 0; i < (1 << m); i++) {
        cur = 0;
        for (int j = 0; j < m; j++) {
            if (i & (1 << j)) cur += a[j];
            if (cur > mx) break;
        } if (cur <= mx)
            sums.push_back(cur);
    } sort(sums.begin(), sums.end());
    m = b.size(); ll ans = 0;
    for (int i = 0; i < (1 << m); i++) {
        cur = 0;
        for (int j = 0; j < m; j++) {
            if (i & (1 << j)) cur += b[j];
            if (cur > mx) break;
        } ans += lower_bound(sums.begin(), sums.end(), mx - cur + 1) - sums.begin();
    } cout << ans;
}
int32_t main() { 
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
    
    int t = 1;
    // cin >> t;
    while (t--) {
        solve();
        cout << '\n';
    }
    return 0;
}

Compilation message

bobek.cpp: In function 'void open_file(std::string)':
bobek.cpp:26:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |     freopen((filename + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bobek.cpp:27:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   27 |     freopen((filename + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 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 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 1 ms 344 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 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #5
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 992 KB Output is correct
2 Correct 75 ms 2520 KB Output is correct
3 Correct 305 ms 10656 KB Output is correct
4 Correct 69 ms 2772 KB Output is correct
5 Correct 11 ms 1244 KB Output is correct
6 Correct 5 ms 732 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 31 ms 1500 KB Output is correct
2 Correct 23 ms 992 KB Output is correct
3 Correct 139 ms 5584 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 5 ms 736 KB Output is correct
6 Correct 11 ms 992 KB Output is correct
7 Correct 0 ms 348 KB Output is correct

Subtask #7
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 1500 KB Output is correct
2 Correct 127 ms 2520 KB Output is correct
3 Correct 110 ms 2516 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 56 ms 2520 KB Output is correct
6 Correct 181 ms 8908 KB Output is correct
7 Correct 2 ms 348 KB Output is correct

Subtask #8
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 227 ms 5076 KB Output is correct
2 Correct 20 ms 992 KB Output is correct
3 Correct 6 ms 736 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 5 ms 736 KB Output is correct
6 Correct 126 ms 6200 KB Output is correct
7 Correct 1 ms 348 KB Output is correct

Subtask #9
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 992 KB Output is correct
2 Correct 68 ms 2520 KB Output is correct
3 Correct 7 ms 736 KB Output is correct
4 Correct 6 ms 736 KB Output is correct
5 Correct 67 ms 2576 KB Output is correct
6 Correct 14 ms 992 KB Output is correct
7 Correct 5 ms 452 KB Output is correct

Subtask #10
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 288 ms 10332 KB Output is correct
2 Correct 22 ms 992 KB Output is correct
3 Correct 7 ms 736 KB Output is correct
4 Correct 303 ms 10504 KB Output is correct
5 Correct 92 ms 6100 KB Output is correct
6 Correct 10 ms 1040 KB Output is correct
7 Correct 2 ms 348 KB Output is correct