Submission #1109966

#	Time	Username	Problem	Language	Result	Execution time	Memory
1109966		DON_F	Bank (IZhO14_bank)	C++14	100 / 100	86 ms	8784 KiB

bank

#include<bits/stdc++.h>
using namespace std;
using i64 = long long;
#define all(x) x.begin(), x.end()
#define L(i, b, e) for (int i = b; i < e; ++i)
#define R(i, b, e) for (int i = b; i >= e; --i)
#define pb emplace_back
#define vi vector<int>
#define sz(x) ((int) x.size())
int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, m;
    cin >> n >> m;
    vi a(n), b(m);
    L(i, 0, n)cin >> a[i];
    L(i, 0, m)cin >> b[i];
    vector<pair<int, int>> dp(1 << m, {-1, -1});
    dp[0] = {0, 0};
    L(i, 0, 1 << m){
        L(j, 0, m){
            if ((1 << j) & i || dp[i].first == -1)continue;
            if (dp[i].second < n && dp[i].first + b[j] <= a[dp[i].second]){
                dp[i + (1 << j)] = {(dp[i].first + b[j] == a[dp[i].second] ? 0 : dp[i].first + b[j]), (dp[i].first + b[j] == a[dp[i].second] ? dp[i].second + 1 : dp[i].second)};
            }
        }
    }
    int ans = 0;
    L(i, 0, 1 << m)if (dp[i].second == n)ans = 1;
    cout << (ans ? "YES\n" : "NO\n");
}

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