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Submission #1028251

# Submission time Handle Problem Language Result Execution time Memory
1028251 2024-07-19T15:35:12 Z lmao123456 Ice Hockey World Championship (CEOI15_bobek) C++14
20 / 100
 61 ms 10476 KB 
#include <bits/stdc++.h>
using namespace std;
vector<int> df(vector<int> v) {
    int n = v.size();
    vector<int> res;
    for(int j = 0; j < (1 << n); j++) {
        int sum = 0;
        for(int i = 0; i < n; i++) {
            sum += ((j >> i) & 1) * v[i];
        }
        res.push_back(sum);
    }
    sort(res.begin(), res.end());
    return res;
}

void solve() {
    int n, m;
    cin >> n >> m;
    vector<int> v(n);
    for(int i = 0; i < n; i++) {
        cin >> v[i];
    }
    if(n == 1) {
        if(v[0] <= m) {
            cout << "2" << "\n";
        } else {
            cout << "1" << "\n";
        }
        return;
    }
    int a1 = n / 2;
    int b1 = n - a1;
    vector<int> a = v;
    a.resize(a1);
    vector<int> b = v;
    reverse(b.begin(), b.end());
    b.resize(b1);
    reverse(b.begin(), b.end());
    vector<int> x = df(a);
    vector<int> y = df(b);
    reverse(y.begin(), y.end());
    int ans = 0;
    int idx = 0;
    for(int cur : x) {
        while(idx < y.size() && cur + y[idx] > m) {
            idx++;
        }
        ans += y.size() - idx;
    }
    cout << ans << "\n";
}

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    solve();
}

Compilation message

bobek.cpp: In function 'void solve()':
bobek.cpp:46:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         while(idx < y.size() && cur + y[idx] > m) {
      |               ~~~~^~~~~~~~~~

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
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 344 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
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 #5
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 13 ms 1372 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 18 ms 1756 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #7
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 30 ms 2140 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 45 ms 6996 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 1368 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #10
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 61 ms 10476 KB Output isn't correct
2 Halted 0 ms 0 KB -