Submission #344807

#	Time	Username	Problem	Language	Result	Execution time	Memory
344807		ogibogi2004	Detecting Molecules (IOI16_molecules)	C++14	Compilation error	0 ms	0 KiB

molecules

#include <cstdio>
#include <vector>
#include <cassert>

#include "molecules.h"



#include "molecules.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
vector<int> find_subset(int l, int u, vector<int> w) {
    ll t=0;
    vector<pair<ll,ll> >da;
    
    for(int i=0;i<w.size();i++)
    {
		da.push_back({w[i],i});
    }
    sort(da.begin(),da.end());
    ll j=-1;
    for(ll i=0;i<da.size();i++)
    {
		t+=da[i].first;
		if(t>u)break;
		j=i;
	}
    if(j==-1)return vector<int>(0);
    t=0;
    for(ll i=0;i<=j;i++)
    {
		t+=da[i].first;
	}
	ll f=0;
	for(int i=da.size()-1;i>=da.size()-j-1;i--)
	{
		f+=da[i].first;
	}
	if(t>u||f<l)
	{
		return vector<int>(0);
	}
	set<int>ivan;
	set<int>not_taken;
	for(ll i=0;i<=j;i++)ivan.insert(i);
	for(ll i=j+1;i<da.size();i++)not_taken.insert(i);
	while(t<l)
	{
		ll i1=(*ivan.begin());
		ll i2=(*not_taken.rbegin());
		ivan.erase(i1);
		not_taken.insert(i2);
		ivan.insert(i2);
		not_taken.erase(i1);
		t+=da[i2].first-da[i1].first;
	}
	vector<int>ret;
	for(auto of:ivan)
	{
		ret.push_back(da[of].second);
	}
	sort(ret.begin(),ret.end());
	return ret;
}




int main() {
    int n, l, u;
    assert(3 == scanf("%d %d %d", &n, &l, &u));
    std::vector<int> w(n);
    for (int i = 0; i < n; i++)
        assert(1 == scanf("%d", &w[i]));
    std::vector<int> result = find_subset(l, u, w);
    
    
    printf("%d\n", (int)result.size());
    for (int i = 0; i < (int)result.size(); i++)
        printf("%d%c", result[i], " \n"[i == (int)result.size() - 1]);
}

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:17:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |     for(int i=0;i<w.size();i++)
      |                 ~^~~~~~~~~
molecules.cpp:23:17: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     for(ll i=0;i<da.size();i++)
      |                ~^~~~~~~~~~
molecules.cpp:36:25: warning: comparison of integer expressions of different signedness: 'int' and 'long long unsigned int' [-Wsign-compare]
   36 |  for(int i=da.size()-1;i>=da.size()-j-1;i--)
      |                        ~^~~~~~~~~~~~~~~
molecules.cpp:47:16: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |  for(ll i=j+1;i<da.size();i++)not_taken.insert(i);
      |               ~^~~~~~~~~~
/tmp/ccEZ4EWs.o: In function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'
/tmp/ccsGKbvH.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status