Submission #397617

#	Time	Username	Problem	Language	Result	Execution time	Memory
397617		huukhang	Bank (IZhO14_bank)	C++11	100 / 100	120 ms	8524 KiB

bank

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
#define MOD 1000000007LL
 
int N, M;
int a[20], b[20];
pair<int, int> dp[1<<20];
 
int main() {
    //freopen("feast.in", "r", stdin);
    //freopen("feast.out", "w", stdout);
    //ios_base::sync_with_stdio(false);
    //cin.tie(0);
    
    cin >> N >> M;
    for (int i = 0; i < N; i++) cin >> a[i];
    for (int i = 0; i < M; i++) cin >> b[i];
    dp[0] = {0, 0};
    for (int bm = 1; bm < (1 << M); bm++) {
        dp[bm] = {0, 0};
        for (int i = 0; i < M; i++) {
            if (bm & (1<<i)) {
                int nbm = bm^(1<<i);
                pair<int, int> pp = dp[nbm];
                if (pp.second + b[i] < a[pp.first]) {
             //   	cout << "add " << b[i] << " to " << pp.second << " (a[pp.first] = " << a[pp.first] << ")\n";
                	pp.second += b[i];
                }
                else if (pp.second+b[i] == a[pp.first]) {
              //  	cout << "add " << b[i] << " to " << pp.second << " (a[pp.first] = " << a[pp.first] << ")\n";
                	pp.first++, pp.second = 0;
                }
                
                if (dp[bm] < pp) {
            //    	cout << dp[bm].first << " " << dp[bm].second << "\n";
           //     	cout << pp.first << " " << pp.second << "\n\n";
                }
                 if (dp[bm].first < pp.first || dp[bm].second == 0) dp[bm] = max(dp[bm], pp);
          //  	 if (dp[bm] < pp) cout << "Life is a lie\n";
                
                if (pp.first == N) {
                    cout << "YES" << endl;
                    return 0;
                }
                
                //cout << bitset<5>(nbm) << " : " << bitset<5>(bm) << " - " << pp.first << " " << pp.second << endl;
            }
        }
    }
    cout << "NO" << endl;
}

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