Submission #561528

#	Time	Username	Problem	Language	Result	Execution time	Memory
561528		Koosha_mv	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	57 ms	7088 KiB

molecules

#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<x.F<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first
#include "molecules.h"

const int N=1e6+99;

int n,t,L,R;
pair<int,int> a[N];
ll ps[N];

vector<int> find_subset(int L,int R,vector<int> w) {
	n=w.size();
	f(i,1,n+1) a[i]={w[i-1],i-1};
	sort(a+1,a+n+1);
	f(i,1,n+1) ps[i]=ps[i-1]+a[i].F;
	int len=-1;
	f(i,1,n+1){
		if(ps[i]>R || ps[n]-ps[n-i]<L) continue ;
		len=i;
	}
	if(len==-1) return {};
	int l=-1,r=len;
	while(l+1<r){
		int mid=(l+r)>>1;
		if(ps[mid]+ps[n]-ps[n-(len-mid)]<L) r=mid;
		else l=mid;
	}
	int m=l,p=r,sum=ps[r]+ps[n]-ps[n-(len-r)];
	while(sum<L) sum-=a[p++].F,sum+=a[p].F;
	vector<int> ans;
	f(i,1,m+1) ans.pb(a[i].S);
	f(i,n+1-(len-r),n+1) ans.pb(a[i].S);
	ans.pb(a[p].S);
	return ans;
}
/*
int32_t main(){
	ios:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
	int n,L,R;
	vector<int> vec,ans;
	cin>>n>>L>>R;
	f(i,0,n){
		int x;
		cin>>x;
		vec.pb(x);
	}
	ans=find_subset(L,R,vec);
	dbgv(ans);
}*/

• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 12 / 12
• Subtask 4: 15 / 15
• Subtask 5: 23 / 23
• Subtask 6: 31 / 31