oj.uz

Submission #123578

# Submission time Handle Problem Language Result Execution time Memory
123578 2019-07-01T17:12:26 Z tinjyu Detecting Molecules (IOI16_molecules) C++14
0 / 100
 2 ms 376 KB 
#include "molecules.h"
#include <iostream>
using namespace std;
long long int a[1000005],tree[1000005],c,d;
long long int buildtree(int l,int r,int t)
{
	if(l==r)return tree[t]=a[l];
	return tree[t]=buildtree(l,(l+r)/2,t*2)+buildtree((l+r)/2+1,r,t*2+1);
}
long long int findtree(int l,int r,int t)
{
	//cout<<l<<" "<<r<<" "<<t<<" "<<c<<" "<<d<<endl;
	if(d<l || c>r)return 0;
	if(c<=l && r<=d)return tree[t];
	return findtree(l,(l+r)/2,t*2)+findtree((l+r)/2+1,r,t*2+1);
}
long long int qs(int s,int e)
{
	if(s==e)return 0;
	int l=s,r=e,mid=(a[l]+a[r])/2;
	while(l<=r)
	{
		while(a[l]<mid)l++;
		while(a[r]>mid)r--;
		if(l<=r)
		{
			swap(a[l],a[r]);
			l++;
			r--;
		}
	}
	qs(s,r);
	qs(l,e);
} 
std::vector<int> find_subset(int l, int u, std::vector<int> w) {
	long long int n=w.size();
	for(int i=0;i<n;i++)a[i]=w[i];
	int mi,ma;
	qs(1,n);
	buildtree(0,n-1,1);
	long long int sum=0;
	for(int i=1;i<=n;i++)
	{
		int s=i,e=n-1;
		while(s<=e)
		{
			long long int mid=(s+e)/2;
			c=mid-i+1,d=mid;
			//cout<<c<<" "<<d<<endl;
			long long int sum=findtree(0,n-1,1);
			
			//cout<<sum<<endl;

			if(l<=sum && sum<=u)
			{
				long long int m=d-c+1;
				vector<int> ans(m);
				for(int j=c;j<=d;j++)ans[j-c]=j;
				return ans;
			}
			if(sum<l)s=mid+1;
			else e=mid-1;
		}
	}
	vector<int> ans;
	return ans;
}

Compilation message

molecules.cpp: In function 'std::vector<int> find_subset(int, int, std::vector<int>)':
molecules.cpp:38:6: warning: unused variable 'mi' [-Wunused-variable]
  int mi,ma;
      ^~
molecules.cpp:38:9: warning: unused variable 'ma' [-Wunused-variable]
  int mi,ma;
         ^~
molecules.cpp:41:16: warning: unused variable 'sum' [-Wunused-variable]
  long long int sum=0;
                ^~~
molecules.cpp: In function 'long long int qs(int, int)':
molecules.cpp:34:1: warning: control reaches end of non-void function [-Wreturn-type]
 } 
 ^

Subtask #1
0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB OK (n = 1, answer = NO)
2 Correct 2 ms 376 KB OK (n = 1, answer = NO)
3 Incorrect 2 ms 376 KB Contestant can not find answer, jury can
4 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB OK (n = 12, answer = YES)
2 Correct 2 ms 376 KB OK (n = 12, answer = YES)
3 Correct 2 ms 376 KB OK (n = 12, answer = NO)
4 Correct 2 ms 376 KB OK (n = 12, answer = NO)
5 Incorrect 2 ms 376 KB Contestant can not find answer, jury can
6 Halted 0 ms 0 KB -

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB OK (n = 1, answer = NO)
2 Correct 2 ms 376 KB OK (n = 1, answer = NO)
3 Incorrect 2 ms 376 KB Contestant can not find answer, jury can
4 Halted 0 ms 0 KB -

Subtask #4
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB OK (n = 1, answer = NO)
2 Correct 2 ms 376 KB OK (n = 1, answer = NO)
3 Incorrect 2 ms 376 KB Contestant can not find answer, jury can
4 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB OK (n = 1, answer = NO)
2 Correct 2 ms 376 KB OK (n = 1, answer = NO)
3 Incorrect 2 ms 376 KB Contestant can not find answer, jury can
4 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB OK (n = 1, answer = NO)
2 Correct 2 ms 376 KB OK (n = 1, answer = NO)
3 Incorrect 2 ms 376 KB Contestant can not find answer, jury can
4 Halted 0 ms 0 KB -