Submission #72560

#	Time	Username	Problem	Language	Result	Execution time	Memory
72560		aleksam	Detecting Molecules (IOI16_molecules)	C++14	0 / 100	3 ms	596 KiB

molecules

#pragma once

#include <bits/stdc++.h>
#define MAX_N 500000

using namespace std;

long long L[MAX_N], D[MAX_N];
int N;
set<long long> S;
vector<int> find_subset(int l, int u, vector<int> w) {
	N=w.size();
	L[0]=w[0];
	for(int i=1; i<N; ++i){
		L[i]=L[i-1]+w[i];
		if(L[i]>=l && L[i]<=u){
			vector<int> ret;
			for(int j=0;  j<i+1; ++j){
				ret.push_back(j);
			}
			return ret;
		}
	}
	D[N-1]=w[N-1];
	for(int i=N-2; i>=0; --i){
		D[i]=D[i+1]+w[i];
		if(D[i]>=l && D[i]<=u){
			vector<int> ret;
			for(int j=N-1;  j>=i; --j){
				ret.push_back(j);
			}
			return ret;
		}
	}
	S.insert(0);
	for(int i=N-2; i>=0; --i){
		S.insert(D[i+1]);
		auto x=S.lower_bound((long long)l-L[i]);
		long long val=*x;
		if(val<=u-L[i]){
			//To je to, nasao sam resenje
			vector<int> ret;
			int ind=-1;
			for(int j=i+1; j<N; ++j)
				if(D[j]==val+L[i])
					ind=j;
			for(int j=0; j<=i; ++j)
				ret.push_back(j);
			for(int j=ind; j<N; ++j)
				ret.push_back(j);
			return ret;
		}
	}
	vector<int> ret;
	return ret;
}

Compilation message (stderr)

molecules.cpp:1:9: warning: #pragma once in main file
 #pragma once
         ^~~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 10
• Subtask 3: 0 / 12
• Subtask 4: 0 / 15
• Subtask 5: 0 / 23
• Subtask 6: 0 / 31