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Submission #905828

# Submission time Handle Problem Language Result Execution time Memory
905828 2024-01-13T04:56:30 Z Faisal_Saqib Palembang Bridges (APIO15_bridge) C++17
31 / 100
 2000 ms 4520 KB 
#include <iostream>
#include <set>
#include <algorithm>
#include <vector>
using namespace std;
long long BFG(vector<int>& neq)
{
	int s=0;
	int e=neq.size();
	if(s==e)
		return 0;
	long long final=1e18;
	long long sum=0,ot=0;
	for(int j=s;j<e;j++)
		sum+=neq[j];
	for(int i=s;i<e;i++)
	{
		sum-=neq[i];
		ot+=neq[i];
		long long bf=i+1-s;
		long long af=e-i-1;
		final=min(final,(bf*((long long)(neq[i])))-ot + (sum-(af*((long long)neq[i]))));
	}
	return final;
}
int main()
{
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);
	int k,n;
	cin>>k>>n;
	long long total=0;
	vector<pair<int,int>> vlp;
	vector<int> neq;
	for(int j=0;j<n;j++)
	{
		char a,c;
		int b,d;
		cin>>a>>b>>c>>d;
		if(a!=c)
		{
			neq.push_back(b);
			neq.push_back(d);
			vlp.push_back({b,d});
			total+=1;
		}
		else
		{
			total+=abs(b-d);
		}
	}
	sort(begin(neq),end(neq));
	if(k==1)
	{		
		cout<<total+BFG(neq)<<'\n';
	}
	else
	{
		if(vlp.size()==0)
		{
			cout<<total<<'\n';
			return 0;
		}
		// Full Brute force
		long long pl=1e18;
		for(int i=0;i<neq.size();i++)
		{
			for(int j=i+1;j<neq.size();j++)
			{
				long long cur=0;
				for(int k=0;k<vlp.size();k++)
				{
					cur+=min(abs(vlp[k].first-neq[i])+abs(vlp[k].second-neq[i]),abs(vlp[k].first-neq[j])+abs(vlp[k].second-neq[j]));
				}
				pl=min(pl,cur);
			}
		}
		// Did not work
		// long long pl=1e18;
		// for(int j=0;j<vlp.size();j++)
		// {
		// 	vector<int> fpp,spp;
		// 	for(int k=0;k<j;k++)
		// 	{
		// 		fpp.push_back(vlp[k].first);
		// 		fpp.push_back(vlp[k].second);
		// 	}
		// 	for(int k=j;k<vlp.size();k++)
		// 	{
		// 		spp.push_back(vlp[k].first);
		// 		spp.push_back(vlp[k].second);
		// 	}
		// 	sort(begin(fpp),end(fpp));
		// 	sort(begin(spp),end(spp));
		// 	pl=min(pl,BFG(fpp)+BFG(spp));
		// 	// if((BFG(0,j)+BFG(j+1,neq.size()))==5)
		// 	// {
		// 	// 	cout<<"For "<<j<<endl;
		// 	// }
		// }
		cout<<total+pl<<'\n';
	}
	return 0;
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:67:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   67 |   for(int i=0;i<neq.size();i++)
      |               ~^~~~~~~~~~~
bridge.cpp:69:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |    for(int j=i+1;j<neq.size();j++)
      |                  ~^~~~~~~~~~~
bridge.cpp:72:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   72 |     for(int k=0;k<vlp.size();k++)
      |                 ~^~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 460 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 624 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 2 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 356 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 2 ms 600 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 600 KB Output is correct
8 Correct 2 ms 348 KB Output is correct
9 Correct 1 ms 348 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 1 ms 348 KB Output is correct
12 Correct 25 ms 3016 KB Output is correct
13 Correct 37 ms 4480 KB Output is correct
14 Correct 27 ms 3276 KB Output is correct
15 Correct 22 ms 2984 KB Output is correct
16 Correct 21 ms 3688 KB Output is correct
17 Correct 28 ms 4400 KB Output is correct
18 Correct 29 ms 4036 KB Output is correct
19 Correct 35 ms 4520 KB Output is correct
20 Correct 23 ms 3988 KB Output is correct
21 Correct 30 ms 4152 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 456 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 6 ms 512 KB Output is correct
4 Correct 4 ms 456 KB Output is correct
5 Correct 2 ms 604 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 5 ms 460 KB Output is correct
8 Correct 7 ms 348 KB Output is correct
9 Correct 6 ms 456 KB Output is correct
10 Correct 6 ms 604 KB Output is correct
11 Correct 6 ms 348 KB Output is correct
12 Correct 6 ms 348 KB Output is correct

Subtask #4
0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 2 ms 508 KB Output is correct
3 Correct 4 ms 348 KB Output is correct
4 Correct 6 ms 504 KB Output is correct
5 Correct 2 ms 688 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 7 ms 612 KB Output is correct
8 Correct 9 ms 504 KB Output is correct
9 Correct 6 ms 348 KB Output is correct
10 Correct 6 ms 348 KB Output is correct
11 Correct 6 ms 348 KB Output is correct
12 Correct 9 ms 348 KB Output is correct
13 Execution timed out 2093 ms 460 KB Time limit exceeded
14 Halted 0 ms 0 KB -

Subtask #5
0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 504 KB Output is correct
2 Correct 1 ms 452 KB Output is correct
3 Correct 6 ms 348 KB Output is correct
4 Correct 4 ms 456 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 6 ms 348 KB Output is correct
8 Correct 6 ms 348 KB Output is correct
9 Correct 7 ms 348 KB Output is correct
10 Correct 6 ms 348 KB Output is correct
11 Correct 5 ms 348 KB Output is correct
12 Correct 9 ms 348 KB Output is correct
13 Execution timed out 2070 ms 348 KB Time limit exceeded
14 Halted 0 ms 0 KB -