Submission #432649

#	Time	Username	Problem	Language	Result	Execution time	Memory
432649		Belgutei	Detecting Molecules (IOI16_molecules)	C++17	9 / 100	1 ms	320 KiB

molecules

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

using namespace std;

#define ll long long
#define ff first
#define ss second
#define pb push_back
#define mk make_pair

vector<int> v;
vector<pair<int,int> > w;

std::vector<int> find_subset(int l, int u, std::vector<int> ww) {
    for(int i=0; i<ww.size(); i++){
        w.pb(mk(ww[i],i));
    }
    sort(w.begin(),w.end());
    bool ok=0;
    for(int k=1; k<=w.size() && ok==0; k++){
        ll sum=0;
        for(int j=0; j<k; j++){
            sum+=w[j].ff;
        }
        if(sum>u) break;
        if(l<=sum){
            for(int j=0; j<k; j++){
                v.pb(w[j].ss);
            }
            break;
        }
        int x=0;
        int y=w.size()-1;
        while(x<y && x<=k-1){
            sum-=w[x].ff;
            sum+=w[y].ff;
            if(sum>=l){
                for(int i=(x+1); i<=k-1; i++){
                    v.pb(w[i].ss);
                }
                for(int i=w.size()-x-1; i<w.size(); i++){
                    v.pb(w[i].ss);
                }
                ok=1;
                break;
            }
            x++;
            y--;
        }
    }
    return v;
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:16:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for(int i=0; i<ww.size(); i++){
      |                  ~^~~~~~~~~~
molecules.cpp:21:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   21 |     for(int k=1; k<=w.size() && ok==0; k++){
      |                  ~^~~~~~~~~~
molecules.cpp:42:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |                 for(int i=w.size()-x-1; i<w.size(); i++){
      |                                         ~^~~~~~~~~

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