Submission #148933

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
148933	2019-09-01T05:25:21 Z	rkm0959(#3623, jun6873, babo)	Crosses on the Grid (FXCUP4_cross)	C++17	100 / 100	360 ms	17644 KB

cross

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp> // Common file  
#include <ext/pb_ds/tree_policy.hpp>  
#include <functional> // for less  

#define L long long

using namespace std;
using namespace __gnu_pbds;  

int n;

typedef tree<pair<int,int>, null_type, less<pair<int,int> >, rb_tree_tag,  
            tree_order_statistics_node_update>  
    ordered_set;  

ordered_set st;


L SelectCross(int K, vector<int>I, vector<int> O){
	L ret=0;	
	n=I.size();
	int i;
	vector<pair<int,int> >point;
	for(i=0;i<n;i++)
	{
		point.push_back(make_pair(O[i],I[i]));
	}
	sort(point.begin(),point.end(),[](pair<int,int>a, pair<int,int>b){
		return a.second<b.second;
	});
	for(i=n-1;i>=0;i--)
	{
		st.insert(point[i]);
		if(st.size()>=K)
		{
			L a=point[i].second;
			L b=st.find_by_order(st.size()-K)->first;
			//printf("%lld %lld %lld %lld\n",point[i].first,point[i].second,a,b);
			ret=max(ret,2*a*b-a*a);
		}
		else
		{
			//printf("%lld %lld\n",point[i].first,point[i].second);
		}
	}
	return ret;
}

Compilation message

cross.cpp: In function 'long long int SelectCross(int, std::vector<int>, std::vector<int>)':
cross.cpp:35:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if(st.size()>=K)
      ~~~~~~~~~^~~

Subtask #1

8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	256 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	7 ms	512 KB	Output is correct
5	Correct	17 ms	1408 KB	Output is correct
6	Correct	307 ms	17632 KB	Output is correct
7	Correct	315 ms	17632 KB	Output is correct
8	Correct	312 ms	17640 KB	Output is correct

Subtask #2

55.0 / 55.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	256 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	7 ms	512 KB	Output is correct
5	Correct	17 ms	1408 KB	Output is correct
6	Correct	307 ms	17632 KB	Output is correct
7	Correct	315 ms	17632 KB	Output is correct
8	Correct	312 ms	17640 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	6 ms	512 KB	Output is correct
12	Correct	17 ms	1408 KB	Output is correct
13	Correct	131 ms	9196 KB	Output is correct
14	Correct	311 ms	17640 KB	Output is correct
15	Correct	360 ms	17508 KB	Output is correct
16	Correct	350 ms	17632 KB	Output is correct

Subtask #3

37.0 / 37.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	256 KB	Output is correct
2	Correct	5 ms	384 KB	Output is correct
3	Correct	5 ms	384 KB	Output is correct
4	Correct	7 ms	512 KB	Output is correct
5	Correct	17 ms	1408 KB	Output is correct
6	Correct	307 ms	17632 KB	Output is correct
7	Correct	315 ms	17632 KB	Output is correct
8	Correct	312 ms	17640 KB	Output is correct
9	Correct	5 ms	384 KB	Output is correct
10	Correct	5 ms	384 KB	Output is correct
11	Correct	6 ms	512 KB	Output is correct
12	Correct	17 ms	1408 KB	Output is correct
13	Correct	131 ms	9196 KB	Output is correct
14	Correct	311 ms	17640 KB	Output is correct
15	Correct	360 ms	17508 KB	Output is correct
16	Correct	350 ms	17632 KB	Output is correct
17	Correct	5 ms	384 KB	Output is correct
18	Correct	6 ms	384 KB	Output is correct
19	Correct	18 ms	1536 KB	Output is correct
20	Correct	134 ms	9056 KB	Output is correct
21	Correct	213 ms	13928 KB	Output is correct
22	Correct	284 ms	17640 KB	Output is correct
23	Correct	298 ms	17636 KB	Output is correct
24	Correct	311 ms	17644 KB	Output is correct
25	Correct	323 ms	17636 KB	Output is correct
26	Correct	275 ms	17632 KB	Output is correct