Submission #1082086

#	Time	Username	Problem	Language	Result	Execution time	Memory
1082086		logangd	Detecting Molecules (IOI16_molecules)	C++14	100 / 100	43 ms	10184 KiB

molecules

#include "molecules.h"
#include<algorithm>
using namespace std;

vector<int> find_subset(int l, int u, vector<int> w) {
    vector<int>r;
    vector<pair<long long,int>>v;
    for(int i=0;i<w.size();i++)v.push_back({w[i],i});
    sort(v.begin(),v.end());
    int i,j;
    long long s=0;
    for(i=0;i<v.size()&&s+v[i].first<=u;i++)s+=v[i].first;
    if(i==v.size()){
        if(l<=s&&s<=u){
            for(int k=0;k<i;k++)r.push_back(v[k].second);
        }
        return r;
    }
    for(i--,j=v.size()-1;0<=i&&s+v[j].first-v[i].first<=u;j--,i--)
        s+=v[j].first-v[i].first;
    if(l<=s&&s<=u){
        for(int k=0;k<=i;k++)r.push_back(v[k].second);
        for(int k=j+1;k<v.size();k++)r.push_back(v[k].second);
    }
    return r;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:8:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for(int i=0;i<w.size();i++)v.push_back({w[i],i});
      |                 ~^~~~~~~~~
molecules.cpp:12:14: 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]
   12 |     for(i=0;i<v.size()&&s+v[i].first<=u;i++)s+=v[i].first;
      |             ~^~~~~~~~~
molecules.cpp:13:9: 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]
   13 |     if(i==v.size()){
      |        ~^~~~~~~~~~
molecules.cpp:23:24: 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]
   23 |         for(int k=j+1;k<v.size();k++)r.push_back(v[k].second);
      |                       ~^~~~~~~~~

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