Submission #1309757

#	Time	Username	Problem	Language	Result	Execution time	Memory
1309757		bluecat	Bank (IZhO14_bank)	C++20	19 / 100	93 ms	18520 KiB

bank

// #pragma GCC optimize("Ofast,unroll-loops")
// #pragma GCC target("avx,avx2,fma")
#include "bits/stdc++.h"
using namespace std;
using ll   = long long;
using ld   = long double;
using ui   = unsigned int;
using ull  = unsigned long long;
using i128 = __int128;
using pii  = pair<int, int>;
using pll  = pair<ll, ll>;
using t3i  = tuple<int, int, int>;
using t3l  = tuple<ll, ll, ll>;
using vi   = vector<int>;
using vl   = vector<long long>;
using arr  = array<int, 4>;
using node = pair<int, arr>;
int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0);
    int n, q; cin >> n >> q;
    vector<int> a(n), b(q);
    for (int i = 0; i < n; i++) cin >> a[i];
    for (int i = 0; i < q; i++) cin >> b[i];
    int w = *max_element(a.begin(),a.end());
    vector<vi> dk(w+1);
    for (int m = 0; m < (1<<q); m++)
    {
        int s = 0;
        for (int i = 0; i < q; i++)
            if ((m>>i)&1) s += b[i];
        if (s<=w) dk[s].push_back(m);
    }
    vector<vi> d(n+1,vi(1<<q));
    d[0][0] = 1;
    for (int i = 1; i <= n; i++)
        for (int j = 0; j < dk[a[i-1]].size(); j++)
        {
            int s = dk[a[i-1]][j];
            for (int m = s; m != (1<<q)-1; m = (m+1)|s) d[i][m] |= d[i-1][m^s];
        }

    // for (int i = 0; i < 10; i++)
    // {
    //     bitset<4> b(m);
    //     cout << b << "\n";
    //     m = s|(m+1);
    // }
    // cout << "\n";
    int res = 0;
    for (int m = 0; m < (1<<q); m++) res |= d[n][m];
    cout << (res?"YES":"NO") << "\n";
}

• Subtask 1: 19 / 19
• Subtask 2: 0 / 25
• Subtask 3: 0 / 27
• Subtask 4: 0 / 29