Submission #484484

#	Time	Username	Problem	Language	Result	Execution time	Memory
484484		_Body	Detecting Molecules (IOI16_molecules)	C++17	0 / 100	1 ms	204 KiB

molecules

#include "molecules.h"
//#include"grader.cpp"
#include<bits/stdc++.h>
using namespace std;
vector<int> find_subset(int l, int u, std::vector<int> w) {
    vector<int>res;
    vector<pair<long long,int>>arr;
    int n=w.size();
    for(int i=0;i<n;i++)
    {
        if(w[i]>=l&&w[i]<=u)
        {
            res.push_back(i+1);
            return res;
        }
      //  if(w[i]<l)
       // {
            arr.push_back({w[i],i});
      //  }
    }
    sort(arr.begin(),arr.end());
    long long sum=0;
    ///int l=0;
    deque<int>deq;
    bool is=false;
    for(int i=0;i<arr.size();i++)
    {
        deq.push_back(arr[i].second);
        sum+=arr[i].first;
        if(sum>=l&&sum<=u)
        {
            is=true;
            break;
        }
        if(sum>u)
        {
            while(sum>u)
            {
                sum-=(w[deq.front()]);
                deq.pop_front();
            }
            if(sum<=u&&sum>=l)
            {
                is=true;
                break;
            }
        }
    }
    if(!is)
    {
        vector<int>em(0);
        return em;
    }
    long long tmp=0;
    for(auto x:deq)
        res.push_back((x+1));
        for(int rr:res)
            tmp+=(w[rr-1]);
        if(tmp>u)
        {
            int x=1/0;
        }
        
    return res;
}
/*
4 15 17
6 8 8 7

*/

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:26:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |     for(int i=0;i<arr.size();i++)
      |                 ~^~~~~~~~~~~
molecules.cpp:55:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   55 |     for(auto x:deq)
      |     ^~~
molecules.cpp:57:9: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   57 |         for(int rr:res)
      |         ^~~
molecules.cpp:61:20: warning: division by zero [-Wdiv-by-zero]
   61 |             int x=1/0;
      |                   ~^~
molecules.cpp:61:17: warning: unused variable 'x' [-Wunused-variable]
   61 |             int x=1/0;
      |                 ^

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