Submission #785074

#	Time	Username	Problem	Language	Result	Execution time	Memory
785074		Lyrically	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include<bits/stdc++.h>
using namespace std;
#define pii pair<int,int>
#define pb push_back
#define rep(i,n) for(int i=0;i<n;i++)
#define rep1(i,n) for(int i=1;i<=n;i++)
int read(){int x;scanf("%d",&x);return x;}
void print(int x){printf("%d\n",x);}
void file(string s)
{
	freopen((s+".in").c_str(),"r",stdin);
	freopen((s+".out").c_str(),"w",stdout);
}
const int mod=998244353;
vector<int> find_subset(int l,int r,vector<int> w)
{
	vector<pii> v;
	rep(i,(int)w.size())
	{
		v.pb({w[i],i});
	}
	sort(v.begin(),v.end());
	long long tot=0;
	int n=(int)w.size();
	vector<int> res;
	rep(i,n)
	{
		tot=0;
		for(int j=i;j<n;j++)
		{
			tot+=v[j].first;
			if(tot>=l&&tot<=r)
			{
				for(int k=i;k<=j;k++)
				{
					res.pb(v[k].second);
				}
				sort(res.begin(),res.end());
				return res;
			}
		}
	}
	return res;
}
signed main()
{
	int n=read(),L=read(),R=read();
	vector<int> w(n);
	rep(i,n){w[i]=read();}
	vector<int> cur=find_subset(L,R,w);
	cout<<cur.size()<<endl;
	rep(i,cur.size())
	{
		cout<<cur[i]<<" ";
	}
	return 0;
}

Compilation message (stderr)

molecules.cpp: In function 'int main()':
molecules.cpp:5:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    5 | #define rep(i,n) for(int i=0;i<n;i++)
......
   52 |  rep(i,cur.size())
      |      ~~~~~~~~~~~~              
molecules.cpp:52:2: note: in expansion of macro 'rep'
   52 |  rep(i,cur.size())
      |  ^~~
molecules.cpp: In function 'int read()':
molecules.cpp:7:23: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    7 | int read(){int x;scanf("%d",&x);return x;}
      |                  ~~~~~^~~~~~~~~
molecules.cpp: In function 'void file(std::string)':
molecules.cpp:11:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   11 |  freopen((s+".in").c_str(),"r",stdin);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
molecules.cpp:12:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   12 |  freopen((s+".out").c_str(),"w",stdout);
      |  ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccnZQzKo.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccqzDw7m.o:molecules.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status