Submission #661109

#	Time	Username	Problem	Language	Result	Execution time	Memory
661109		hafo	Bank (IZhO14_bank)	C++17	71 / 100	1097 ms	164576 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;
const ll oo = 1e15 + 69;

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

bool getbit(const int mask, 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];

    for(int i = 0; i < n; i++)
        for(int mask = 0; mask < (1 << m); mask++) dp[mask][i] = make_pair(-1, 0);

    dp[(1 << m) - 1][0] = {0, 0};
    for(int i = 0; i < n; i++)
        for(int mask = (1 << m) - 1; mask; mask--)
            if(dp[mask][i].fi == i)
                for(int x = mask; x; x -= x&-x) {
                    int j = __builtin_ctz(x), s = dp[mask][i].se + b[j], add = (s == a[i]);
                    dp[mask ^ (1 << j)][i + add] = {dp[mask][i].fi + add, (add == 0 ? s:0)};
                }
    bool ok = 0;
    for(int mask = 0; mask < (1 << m); mask++)
    if(dp[mask][n].fi == n) {
        ok = 1;
        break;
    }
    cout<<(ok ? "YES":"NO");
    return 0;
}

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