Submission #851217

#	Time	Username	Problem	Language	Result	Execution time	Memory
851217		NamPE	Bank (IZhO14_bank)	C++17	100 / 100	107 ms	17068 KiB

bank

#include <bits/stdc++.h>

using namespace std;
typedef long long ll;

int main() {
    ll n, m;
    cin >> n >> m;

    vector<ll> a(n), b(m);

    for (ll& i : a) {
        cin >> i;
    }

    for (ll& i : b) {
        cin >> i;
    }

    vector<ll> covered(1 << m, -1), leftover(1 << m, -1);
    covered[0] = leftover[0] = 0;

    for (ll i = 0; i < covered.size(); i++) {
        for (ll j = 0; j < m; j++) {
            if (!(i & (1 << j))) {
                continue;
            }

            ll prev = i ^ (1 << j);

            if (covered[prev] == -1) {
                continue;
            }

            ll total = leftover[prev] + b[j];
            ll salary = a[covered[prev]];

            if (total == salary) {
                covered[i] = covered[prev] + 1;
                leftover[i] = 0;
            } else if (total < salary) {
                covered[i] = covered[prev];
                leftover[i] = total;
            }
        }

        if(covered[i] == n) {
            cout << "YES";
            return 0;
        }
    }

    cout << "NO";
}

Compilation message (stderr)

bank.cpp: In function 'int main()':
bank.cpp:23:22: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for (ll i = 0; i < covered.size(); i++) {
      |                    ~~^~~~~~~~~~~~~~~~

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