Submission #961548

#	Time	Username	Problem	Language	Result	Execution time	Memory
961548		doducanh	Bank (IZhO14_bank)	C++14	100 / 100	102 ms	8560 KiB

bank

#include <bits/stdc++.h>

using namespace std;
int leftovers[(1<<20)+7];
int people_cover[(1<<20)+7];
int a[25],b[25];
int n,m;
main()
{
    cin>>n>>m;
    for(int i=0;i<n;i++)cin>>a[i];
    for(int i=0;i<m;i++)cin>>b[i];
    for(int mask=1;mask<(1<<m);mask++)people_cover[mask]=-1;
    people_cover[0]=0;
    leftovers[0]=0;
    for(int mask=1;mask<(1<<m);mask++){
        for(int i=0;i<=m;i++){
            if((mask>>i)&1){
                int prev=(mask^(1<<i));
                if(people_cover[prev]==-1)continue;
                int amt=leftovers[prev]+b[i];
                if(amt<a[people_cover[prev]]){
                    leftovers[mask]=amt;
                    people_cover[mask]=people_cover[prev];
                }
                else if(amt==a[people_cover[prev]]){
                    leftovers[mask]=0;
                    people_cover[mask]=people_cover[prev]+1;
                }
            }
        }
        if(people_cover[mask]==n){
            cout<<"YES";
            return 0;
        }
    }
    cout<<"NO";
    return 0;
}

Compilation message (stderr)

bank.cpp:8:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    8 | main()
      | ^~~~

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