Submission #603263

#	Time	Username	Problem	Language	Result	Execution time	Memory
603263		arayi	Bank (IZhO14_bank)	C++17	71 / 100	401 ms	262144 KiB

bank

// Arayi
#include <bits/stdc++.h>
#define fr first
#define sc second
#define MP make_pair
#define ad push_back
#define PB push_back
#define fastio                        \
    ios_base::sync_with_stdio(false); \
    cin.tie(0);                       \
    cout.tie(0);
#define lli long long int
#define y1 arayikhalatyan
#define j1 jigglypuff
#define ld long double
#define itn int
#define pir pair<int, int>
#define all(x) (x).begin(), (x).end()
#define str string
#define enl endl
#define en endl
#define cd complex<long double>
#define vcd vector<cd>
#define vii vector<int>
#define vlli vector<lli>
using namespace std;

lli gcd(lli a, lli b) { return (b == 0LL ? a : gcd(b, a % b)); }
ld dist(ld x, ld y1, ld x2, ld y2)
{
    return sqrt((x - x2) * (x - x2) + (y1 - y2) * (y1 - y2));
}
lli S(lli a)
{
    return (a * (a + 1LL)) / 2;
}
mt19937 rnd(363542);
char vow[] = {'a', 'e', 'i', 'o', 'u'};
int dx[] = {0, -1, 0, 1, -1, -1, 1, 1, 0};
int dy[] = {-1, 0, 1, 0, -1, 1, -1, 1, 0};
char dc[] = {'R', 'D', 'L', 'U'};

const int N = 3e6 + 20;
const lli mod = LLONG_MAX;
const ld pi = acos(-1);
const ld e = 1e-13;
const int T = 200;

lli bp(lli a, lli b = mod - 2LL)
{
    lli ret = 1;
    while (b)
    {
        if (b & 1)
            ret *= a, ret %= mod;
        a *= a;
        a %= mod;
        b >>= 1;
    }
    return ret;
}
ostream &operator<<(ostream &c, pir a)
{
    c << a.fr << " " << a.sc;
    return c;
}
template <class T>
void maxi(T &a, T b)
{
    a = max(a, b);
}
template <class T>
void mini(T &a, T b)
{
    a = min(a, b);
}

int n, m;
int a[N], b[N];
vii fp[N];
bool dp[21][N];
vii s[N];
int main()
{
    fastio;
    cin >> n >> m;
    for (int i = 0; i < n; i++)
        cin >> a[i];
    for (int i = 0; i < m; i++)
        cin >> b[i];
    for (int x = 0; x < (1 << m); x++)
    {
        int sum = 0;
        for (int i = 0; i < m; i++)
            if ((1 << i) & x)
                sum += b[i];
        fp[sum].ad(x);
    }
    dp[0][0] = 1;
    int sum = 0;
    for (int i = 0; i < n; i++)
    {
        sum += a[i];
        for (int j = 0; j < (1 << m); j++)
            s[j].clear();
        for(auto p : fp[a[i]])
            s[p].ad(p);
        for (int j = 0; j < m; j++)
        {
            for (int x = (1 << m) - 1; x >= 0; x--)
            {
                if (((1 << j) & x))
                    continue;
                for (auto p : s[x])
                    s[x ^ (1 << j)].ad(p);
            }
        }
        for (auto p : fp[sum])
        {
            for (auto p1 : s[p])
            {
                if (dp[i][p ^ p1])
                {
                    dp[i + 1][p] = 1;
                    break;
                }
            }
        }
    }
    bool pat = 0;
    for (auto p : fp[sum])
        if (dp[n][p])
            pat = 1;
    if (pat)
        cout << "YES" << endl;
    else
        cout << "NO" << endl;
    return 0;
}

/*
    __
  *(><)*
    \/ /
    ||/
  --||
    ||
    /\
   /  \
  /    \

*/

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