Submission #897496

#	Time	Username	Problem	Language	Result	Execution time	Memory
897496		Nurislam	Bank (IZhO14_bank)	C++17	71 / 100	1040 ms	1440 KiB

bank

#include <bits/stdc++.h>
using namespace std;
#define pb push_back
//~ #define ff first
//~ #define ss second
//~ #define all(x) x.begin(),x.end()
//~ #define rall(x) x.rbegin(),x.rend()
//~ #define int long long
///*                                                    __                    __                        __                    */
///*        ======     _      /| /|  __   _            /   |  |   /|  |   @  |    |  |  | /   /| |\  | /   |  |  @ | /        */
///*          ||  |_| |_     / |/ | |  | |_  |-        |   |--|  /-|  |   |  +-+  |==|  |-   /=| | \ | |   |--|  | |-         */
///*          ||  | | |_    /     | |__|  _| |_        \__ |  | /  |  |__ |  __|  |  |  | \ /  | |  \| \__ |  |  | | \        */
///*  

const int N = 1e6+4, mod = 1e9+7;
int n, m;
int a[21];
map<pair<multiset<int>, int>, bool>mp;
multiset<int> b;
bool ok = 1;
int cn = 0;
void ch(){
	if(mp[{b, cn}] || !ok)return;
	mp[{b,cn}] = 1;
	if(cn == n){cout << "YES\n";ok = 0;return;}
	multiset<int> st = b;
	for(int ms = 1; ms < (int)(1<<b.size()); ms++){
		if(!ok)return;
		vector<int> res;
		int cnt = 0, sum = 0;
		for(int i:b){
			if((ms>>cnt) & 1){
				sum+=i;
				res.pb(i);
			}
			cnt++;
			if(sum > a[cn])break;
		}
		if(sum == a[cn]){
			for(int i:res)b.erase(b.find(i));
			cn++;
			ch();
			cn--;
			b = st;
		}
	}
}
void solve(){
	cin >> n >> m;
	for(int i = 0; i < n; i++)cin >> a[i];
	for(int i = 0; i < m; i++){int x;cin >> x;b.insert(x);}
	ch();
	if(ok)cout << "NO\n";
}
main(){
	ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
	int test = 1;
	//~ cin >> test;
	while(test--){
		solve();
	}
}

Compilation message (stderr)

bank.cpp:55:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   55 | main(){
      | ^~~~

• Subtask 1: 19 / 19
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 0 / 29