Submission #205372

#	Time	Username	Problem	Language	Result	Execution time	Memory
205372		oko	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	72 ms	6252 KiB

molecules

#include <cstdio>
#include <vector>
#include <cassert>
#include<bits/stdc++.h>
#include "molecules.h"

using namespace std;
long long a,b,sum;
vector<pair<int,int> >v;
vector<int> find_subset(int l, int u, std::vector<int> w)
{
    for(int i=0;i<w.size();i++)v.push_back({w[i],i});
    sort(v.begin(),v.end());
    vector<int>ans;
    while(a<v.size())
    {
        if(sum<l&&b<v.size())
        {
            sum+=v[b].first;
            b++;
        }
        else if(u<sum||b==v.size())
        {
            sum-=v[a].first;
            a++;
        }
        if(l<=sum&&sum<=u)
        {
            for(int i=a;i<b;i++)ans.push_back(v[i].second);
            return ans;
        }
    }
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:12:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<w.size();i++)v.push_back({w[i],i});
                 ~^~~~~~~~~
molecules.cpp:15:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(a<v.size())
           ~^~~~~~~~~
molecules.cpp:17:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(sum<l&&b<v.size())
                   ~^~~~~~~~~
molecules.cpp:22:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         else if(u<sum||b==v.size())
                        ~^~~~~~~~~~
molecules.cpp:33:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

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