Submission #164673

#	Time	Username	Problem	Language	Result	Execution time	Memory
164673		aggu_01000101	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	103 ms	8424 KiB

molecules

#include <iostream>
#include <vector>
#include <algorithm>
#define int long long
using namespace std;
vector<int32_t> find_subset(int32_t l, int32_t u, vector<int32_t> arr){
    vector<pair<int, int32_t>> arr1;
    for(int i = 0;i<arr.size();i++){
        arr1.push_back(make_pair(arr[i], i));
    }
    sort(arr1.begin(), arr1.end());
    vector<int32_t> answer;
    int first = 0, last = 0;
    int sum = 0;
    while(last<=arr1.size() && first<arr.size()){
        if(sum>=l && sum<=u){
            for(int i = first;i<last;i++){
                answer.push_back(arr1[i].second);
            }
            goto returnanswer;
        }
        else if(sum<l){
            if(last<arr1.size()) sum+=arr1[last].first;
            last++;
        }
        else{
            sum-=arr1[first].first;
            first++;
        }
    }
    returnanswer:
    return answer;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int32_t, int32_t, std::vector<int>)':
molecules.cpp:8:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0;i<arr.size();i++){
                   ~^~~~~~~~~~~
molecules.cpp:15:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(last<=arr1.size() && first<arr.size()){
           ~~~~^~~~~~~~~~~~~
molecules.cpp:15:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while(last<=arr1.size() && first<arr.size()){
                                ~~~~~^~~~~~~~~~~
molecules.cpp:23:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             if(last<arr1.size()) sum+=arr1[last].first;
                ~~~~^~~~~~~~~~~~

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