Submission #660233

#	Time	Username	Problem	Language	Result	Execution time	Memory
660233		hafo	Bank (IZhO14_bank)	C++14	0 / 100	1 ms	212 KiB

bank

#include <bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define pb push_back
#define pa pair<int, int>
#define pall pair<ll, int>
#define fi first
#define se second
#define TASK "test"
#define all(x) x.begin(), x.end()
using namespace std;

template<typename T1, typename T2> bool mini (T1 &a, T2 b) {if(a > b) a = b; else return 0; return 1;}
template<typename T1, typename T2> bool maxi (T1 &a, T2 b) {if(a < b) a = b; else return 0; return 1;}

const int MOD = 1e9 + 7;
const int LOG = 20;
const int maxn = 20 + 7;
const ll oo = 1e15 + 69;

int n, m, a[maxn], b[maxn];
pa dp[1 << 20];

bool getbit(const int mask, const int i) {
    return ((mask >> i) & 1);
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    //freopen(TASK".inp", "r", stdin);
    //freopen(TASK".out", "w", stdout);

    cin>>n>>m;
    for(int i = 0; i < n; i++) cin>>a[i];
    for(int i = 0; i < m; i++) cin>>b[i];

    fill_n(dp, (1 << n), make_pair(0, 0));
    dp[0] = {1, 0};
    for(int mask = 0; mask < (1 << n); mask++)
        for(int i = 0; i < n; i++)
        if(!getbit(mask, i)) {
            int id = dp[mask].fi, s = dp[mask].se;
            if(s + a[i] == b[id - 1]) {
                id++;
                s = 0;
            }
            else s += a[i];
            maxi(dp[mask | (1 << i)], make_pair(id, s));
        }
    cout<<(dp[(1 << n) - 1].fi == n ? "YES":"NO");
    return 0;
}

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