Submission #992053

#	Time	Username	Problem	Language	Result	Execution time	Memory
992053		Callie	Bank (IZhO14_bank)	C++11	100 / 100	139 ms	58032 KiB

bank

#include <iostream>
#include <utility>
#include <vector>
using namespace std;

int main() {
	int people, banknotes;
	cin >> people >> banknotes;
	vector<int> plist(people);
	vector<int> blist(banknotes);
	
	for(int i = 0; i < people; i++) {
		cin >> plist[i];
	}
	
	for(int i = 0; i < banknotes; i++) {
		cin >> blist[i];
	}
	
	vector<vector<int> > dp((1 << banknotes), vector<int>(2));
	for(int i = 0; i < (1 << banknotes); i++) {
		dp[i][0] = -1;
		dp[i][1] = -1;
	}
	dp[0][0] = 0;
	dp[0][1] = 0;
	
	for(int i = 0; i < (1 << banknotes); i++) {
		for(int j = 0; j < banknotes; j++) {
			if((i & (1 << j)) == 0) continue;
			if(dp[i ^ (1 << j)][0] == -1) continue;
			if(dp[i ^ (1 << j)][0] == banknotes) continue;
			
			int p = dp[i ^ (1 << j)][0];
			int b = dp[i ^ (1 << j)][1];
			
			if(b + blist[j] < plist[p]) {
				dp[i][0] = p;
				dp[i][1] = b + blist[j];
			}
			else if(b + blist[j] <= plist[p]) {
				dp[i][0] = p + 1;
				dp[i][1] = 0;
			}
		}
	}
	
	for(int i = 0; i < (1 << banknotes); i++) {
		if(dp[i][0] == people) {
			cout << "YES";
			return 0;
		}
	}
	
	cout << "NO";
	return 0;
}

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