Submission #298901

#	Time	Username	Problem	Language	Result	Execution time	Memory
298901		Dovran	Detecting Molecules (IOI16_molecules)	C++11	0 / 100	2 ms	512 KiB

molecules

#include <bits/stdc++.h>
#define N 1000009
#define pii pair <int, int>
#define ff first
#define sz() size()
#define ss second
#define pb push_back
#define ll long long

using namespace std;

int c[N], n;
pii p[N];
vector<int> ans;

vector<int> find_subset(int l, int r, vector<int> w){
	n=w.sz();
	for(int i=0; i<n; i++)
		p[i]={w[i], i};
	sort(p, p+n);
	for(int i=0; i<n; i++)
		c[p[i].ss]+=c[p[i-1].ss]+p[i].ff;
	p[-1].ss=-1;
	for(int i=0; i<n; i++){
		if(l<=c[p[n-1].ss]-c[p[n-i-2].ss] and r>=c[p[i].ss]){
//			cout<<i<<' '<<c[p[n-1].ss]-c[p[n-i-2].ss]<<' '<<c[p[i].ss]<<'\n';
			ll sum=c[p[i].ss];
			int in=-1, x=i;
			for(int j=i+1; j<n; j++){
				if(sum>=l and sum<=r)
					break;
					
				in++, x++, sum+=p[j].ff, sum-=p[in].ff;
//				cout<<sum<<' '<<p[j].ff<<' '<<p[in].ff<<" <--\n";
			}
			if(sum>=l and sum<=r){
				for(int j=in+1; j<=x; j++)
					ans.pb(p[j].ss);
//				cout<<sum<<' '<<in<<' '<<x<<'\n';
				return ans;
			}
		}
	}
//	ans.pb(0);
//	return ans;
	
}
/*
int main(){
	int m, l, r, x;
	vector<int>v;
	cin>>m>>l>>r;
	for(int i=0; i<m; i++)
		cin>>x, v.pb(x);
	vector<int>asd=find_subset(l, r, v);
	for(auto i:asd)
		cout<<i<<' ';
}*/

Compilation message (stderr)

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:47:1: warning: control reaches end of non-void function [-Wreturn-type]
   47 | }
      | ^
molecules.cpp:23:6: warning: array subscript -1 is below array bounds of 'std::pair<int, int> [1000009]' [-Warray-bounds]
   23 |  p[-1].ss=-1;
      |  ~~~~^

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