Submission #972264

#	Time	Username	Problem	Language	Result	Execution time	Memory
972264		vjudge1	Detecting Molecules (IOI16_molecules)	C++17	Compilation error	0 ms	0 KiB

molecules

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define double long double
#define pon ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);  int T=1;
#define ponchik signed main
#define pb push_back
#define pf push_front
#define endl "\n"
#define F first
#define S second

const int N=1e5+69,INF=1e18+1488;
int cnt[N];
map<pair<int,int>,int>mp;
void solve() {
	int n;
	vector <pair<int,int>> v;
	cin>>n;
	for (int i=0; i<n; i++)
	{
		int a,b;
		cin>>a>>b;
		v.pb({a,b});
	}
	sort(v.begin(),v.end());
	int sum=v[0].S,ans=0,pos1=0;
	for (int i=1; i<n; i++)
	{
		sum+=v[i].S;
		if (v[i].F-v[pos1].F<=sum) ans+=sum,sum=0,pos1=i;
	}
//	cout<<pos1<<endl<<ans1;
	int pos2=0;
	sum=0;
	for (int i=1; i<=pos1; i++)
	{
		sum+=v[i-1].S;
		if (v[i].F-v[pos2].F>=sum) ans-=sum,sum=0,pos2=i;
	}
	cout<<ans-v[pos1].F+v[pos2].F;
}

ponchik (/*Alfar ABI*/ ) {
    pon
//  freopen( "###.in" ,"r",stdin); freopen( "###.out" ,"w",stdout);
//	cin>>T;
	while (T--){solve();}
}

Compilation message (stderr)

/usr/bin/ld: /tmp/ccV9GKzl.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/cc5KAJPj.o:molecules.cpp:(.text.startup+0x0): first defined here
/usr/bin/ld: /tmp/ccV9GKzl.o: in function `main':
grader.cpp:(.text.startup+0x18d): undefined reference to `find_subset(int, int, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status