Submission #693612

#	Time	Username	Problem	Language	Result	Execution time	Memory
693612		saayan007	Bank (IZhO14_bank)	C++17	100 / 100	117 ms	16844 KiB

bank

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

using ll = long long;
using pi = pair<int, int>;
using pl = pair<long long, long long>;
using vi = vector<int>;
using vl = vector<long long>;
using vpi = vector<pair<int, int>>;
using vpl = vector<pair<long long, long long>>;

#define fur(i, a, b) for(ll i = a; i <= (ll)b; ++i)
#define ruf(i, a, b) for(ll i = a; i >= (ll)b; --i)
#define fr first 
#define sc second
#define mp make_pair
#define pb emplace_back
#define nl "\n"
#define all(x) (x).begin(),(x).end()
#define rall(x) (x).rbegin(),(x).rend()

int main() 
{
    ios::sync_with_stdio(0);
    cin.tie(0);

    ll n, m;
    cin >> n >> m;

    ll a[n], b[m];
    for(auto &u : a)
        cin >> u;
    for(auto &u : b)
        cin >> u;

    ll M = 1 << m;

    ll left[M];
    ll done[M];
    fur(i, 0, M - 1) {
        left[i] = done[i] = -1;
    }

    left[0] = done[0] = 0;
    fur(s, 0, M - 1) {
        fur(last, 0, m - 1) {
            if(!(s & (1 << last)))
                continue;
            ll prev = s ^ (1 << last);
            if(done[prev] == -1) {
                continue;
            }

            ll tot = left[prev] + b[last];
            ll tar = a[done[prev]];

            if(tot < tar) {
                done[s] = done[prev];
                left[s] = tot;
            } else if(tot == tar) {
                done[s] = done[prev] + 1;
                left[s] = 0;
            }
        }
        if(done[s] == n) {
            cout << "YES" << nl;
            return 0;
        }
    }
    cout << "NO" << nl;
    return 0;
}

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