Submission #1094711

#	Time	Username	Problem	Language	Result	Execution time	Memory
1094711		not_amir	Uplifting Excursion (BOI22_vault)	C++14	0 / 100	0 ms	348 KiB

vault

#include <bits/stdc++.h>
using namespace std;

vector<int> convolute(vector<int> a, vector<int> b) {
    int n = a.size(), m = b.size();
    vector<int> ans(n + m + 1);
    for (int i = 0; i < n; i++)
        for (int j = 0; j < m; j++)
            ans[i + j] = max(ans[i + j], a[i] + b[j]);
}

vector<int> ans(vector<int> p, int L, int D) {
    if(L <= 2 * D) {
        vector<int> res(D + 1);
        for(int i = 0; i <= D; i++)
            res[i] = p[i + L - D];
        return res;
    }
    vector<int> q = ans(p, L / 2, D);
    if(L % 2) {
        vector<int> res = convolute(q, q);
        res.resize(D + 1);
        return res;
    }
    else {
        vector<int> res = convolute(q, p);
        vector<int> newq(D + 1);
        for (int i = 0; i <= D; i++)
            newq[i] = res[i + 1];
        return newq;
    }
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int m, L, jnk;
    cin >> m >> L;
    for(int i = 0; i < m; i++) {
        int x;
        cin >> x;
        if(x != 0)
            return 1;
    }
    cin >> jnk;
    vector<int> v, w;
    for(int i = 1; i <= m; i++) {
        int l, tpow = 1;
        cin >> l;
        while(l) {
            if(l % 2)
                v.push_back(tpow), w.push_back(tpow * i);
            tpow *= 2;
            l /= 2;
        }
    }
    int n = v.size();
    vector<vector<int>> dp(n + 1, vector<int>(2 * m + 1));
    for(int i = 1; i <= n; i++) {
        for(int j = 1; j <= 2 * m; j++) {
            dp[i][j] = dp[i - 1][j];
            if(j >= w[i - 1])
                dp[i][j] = max(dp[i][j],dp[i][j - w[i - 1]] + v[i - 1]);
        }
    }
    vector<int> p(2 * m + 1);
    for(int i = 0; i <= 2 * m; i++)
        p[i] = dp[n][i];
    cout << ans(p, L, m).back() + jnk;
}

Compilation message (stderr)

vault.cpp: In function 'std::vector<int> convolute(std::vector<int>, std::vector<int>)':
vault.cpp:10:1: warning: no return statement in function returning non-void [-Wreturn-type]
   10 | }
      | ^

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3-1: 0 / 10
• Subtask 3-2: 0 / 10
• Subtask 4-1: 0 / 10
• Subtask 4-2: 0 / 10
• Subtask 5-1: 0 / 10
• Subtask 5-2: 0 / 10
• Subtask 6-1: 0 / 10
• Subtask 6-2: 0 / 10