oj.uz

Submission #1085760

# Submission time Handle Problem Language Result Execution time Memory
1085760 2024-09-08T16:09:23 Z juicy Ice Hockey World Championship (CEOI15_bobek) C++17
10 / 100
 270 ms 20768 KB 
#include <bits/stdc++.h>

using namespace std;

#ifdef LOCAL
#include "debug.h"
#else
#define debug(...) 42
#endif

int main() {
  ios::sync_with_stdio(false); cin.tie(nullptr);

  int n; long long k; cin >> n >> k;
  vector<long long> a(n);
  for (int i = 0; i < n; ++i) {
    cin >> a[i];
  }
  vector<long long> lt, rt;
  for (int m = 0; m < (1 << n / 2); ++m) {
    long long sum = 0;
    for (int i = 0; i < n / 2; ++i) {
      if (m >> i & 1) {
        sum += a[i];
      }
    }
    lt.push_back(sum);
  }
  for (int m = 0; m < (1 << n - n / 2); ++m) {
    long long sum = 0;
    for (int i = 0; i < n - n / 2; ++i) {
      if (m >> i & 1) {
        sum += a[n / 2 + i];
      }
    }
    rt.push_back(sum);
  }
  sort(lt.rbegin(), lt.rend());
  sort(rt.begin(), rt.end());
  int j = 0;
  __int128_t res = 0;
  for (auto x : lt) {
    while (j < rt.size() && rt[j] + x <= k) {
      ++j;
    }
    res += j;
  }
  while (res) {
    int x = res % 10;
    cout << x;
    res /= 10;
  }
  return 0;
}

Compilation message

bobek.cpp: In function 'int main()':
bobek.cpp:29:31: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   29 |   for (int m = 0; m < (1 << n - n / 2); ++m) {
      |                             ~~^~~~~~~
bobek.cpp:43:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 |     while (j < rt.size() && rt[j] + x <= k) {
      |            ~~^~~~~~~~~~~

Subtask #1
10.0 / 10.0

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

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 348 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 23 ms 2144 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 30 ms 3032 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 52 ms 3676 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 207 ms 12868 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 24 ms 2144 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 270 ms 20768 KB Output isn't correct
2 Halted 0 ms 0 KB -