Submission #479036

#	Time	Username	Problem	Language	Result	Execution time	Memory
479036		urosk	Bank (IZhO14_bank)	C++14	100 / 100	155 ms	31628 KiB

bank

// __builtin_popcount(x) broj bitova
// __builtin_popcountll(x) long long
#define here cerr<<"---------------------------\n"
#include "bits/stdc++.h"
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll long long
#define ull unsigned long long
#define llinf 100000000000000000LL // 10^17
#define iinf 2000000000 // 2*10^9
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) int(a.size())
#define all(a) a.begin(),a.end()
#define rall(a) a.begin(),a.end(),greater<int>()
#define getunique(v) {sort(all(v)); v.erase(unique(all(v)), v.end());}

using namespace std;
using namespace __gnu_pbds;

typedef tree<int,null_type,less<int>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;

void setIO(string inoutname)
{
	freopen((inoutname+".in").c_str(),"r",stdin);
    	freopen((inoutname+".out").c_str(),"w",stdout);
}
#define mod 1
ll gcd(ll a, ll b)
{
   if(b==0) return a;
   if(a==0) return b;
   if(a>=b)  return gcd(a%b,b);
   return  gcd(a,b%a);
}
ll lcm(ll a,ll b){
   return (a/gcd(a,b))*b;
}
ll add(ll a,ll b){
	a+=b;
	a+=mod;
	if(a>=mod) a%=mod;
	return a;
}
ll mul(ll a,ll b){return(a*b)%mod;}
#define maxn 25
#define maxx 2000005
ll n,m;
ll a[maxn];
ll b[maxn];
pll dp[maxx];
pll get(pll a,pll b){
    if(a.fi>b.fi) return a;
    if(b.fi>a.fi) return b;
    if(a.sc>b.sc) return a;
    return b;
}
void tc(){
	ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
    cin >> m >> n;
    for(ll i = 0;i<m;i++) cin >> a[i];
    for(ll i = 0;i<n;i++) cin >> b[i];
    for(ll i = 0;i<maxx;i++) dp[i] = {-1,-1};
    dp[0] = {0,0};
    for(ll mask = 1;mask<(1<<n);mask++){
        for(ll i = 0;i<n;i++){
            if(((1<<i)&mask)==0) continue;
            if(dp[mask^(1<<i)].fi==-1) continue;
            ll c = dp[mask^(1<<i)].sc + b[i];
            ll j = a[dp[mask^(1<<i)].fi];
            ll nf=-1,ns=-1;
            if(c<j){
                nf = dp[mask^(1<<i)].fi;
                ns = c;
                if(dp[mask].fi==-1) dp[mask] = {nf,ns};
                else dp[mask] = get(dp[mask],{nf,ns});
            }else if(c==j){
                nf = dp[mask^(1<<i)].fi+1;
                ns = 0;
                if(dp[mask].fi==-1) dp[mask] = {nf,ns};
                else dp[mask] = get(dp[mask],{nf,ns});
            }
        }
        if(dp[mask].fi==m){
            cout<<"YES"<<endl;
            return;
        }
    }
    cout<<"NO"<<endl;
    return;
}
int main(){
	ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);
	//setIO("lol");
	int t; t = 1;
	while(t--){
		tc();
	}
	return 0;
}
/*
1 5
8
4 2 5 1 3
*/

Compilation message (stderr)

bank.cpp: In function 'void setIO(std::string)':
bank.cpp:32:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   32 |  freopen((inoutname+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
bank.cpp:33:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |      freopen((inoutname+".out").c_str(),"w",stdout);
      |      ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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