Submission #115306

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
115306	2019-06-06T17:02:49 Z	faustaadp	Friend (IOI14_friend)	C++17	16 / 100	5 ms	4352 KB

friend

#include "friend.h"
#include<bits/stdc++.h>
typedef long long ll;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
using namespace std;
// Find out best sample
ll i,n,b[3],a[101010],jum,ma,x[2],has,j;
vector<ll> v[101010];
ll vis[101010];
ll mat[101010];
ll d[101010][2];
ll dfs(ll aa)
{
	if(vis[aa])
		return 0;
	vis[aa]=1;
	ll ii;
	for(ii=0;ii<v[aa].size();ii++)
		if(mat[v[aa][ii]]==-1||dfs(mat[v[aa][ii]]))
		{
			mat[v[aa][ii]]=aa;
			return 1;
		}
	return 0;
}
ll depe(ll aa,ll bb,ll cc)
{
	if(d[aa][bb]==-1)
	{
		ll ii,h1=a[aa],h2=0;
		for(ii=0;ii<v[aa].size();ii++)
		{
			if(v[aa][ii]==cc)continue;
			h1+=depe(v[aa][ii],1,aa);
			h2+=depe(v[aa][ii],0,aa);
		}
		d[aa][bb]=max(h1,h2);
	}
	return d[aa][bb];
}
int findSample(int n,int confidence[],int host[],int protocol[])
{
	//int ans=10;
	for(i=0;i<n;i++)
	{
		if(i>=1)
		{
			b[protocol[i]]=1;
			if(protocol[i]==0)
			{
				v[host[i]].pb(i);
				v[i].pb(host[i]);
			}
			else
			if(protocol[i]==1)
			{
				for(j=0;j<v[host[i]].size();j++)
				{
					v[v[host[i]][j]].pb(i);
					v[i].pb(v[host[i]][j]);
				}
			}
		}
		a[i]=confidence[i];
		jum+=a[i];
		ma=max(ma,a[i]);
	}
	if(b[0]==0&&b[1]==1&&b[2]==0)
		return jum;
	if(b[0]==0&&b[1]==0&&b[2]==1)
		return ma;
	if(b[0]==1&&b[1]==0&&b[2]==0)
	{
		memset(d,-1,sizeof(d));
		return depe(0,0,0);
	}
	if(b[0]==1&&b[1]==1&&b[2]==0)
	{
		memset(mat,-1,sizeof(mat));
		for(i=0;i<n;i++)
		{
			memset(vis,0,sizeof(vis));
			has+=dfs(i);
		}
		return has;
	}
}

Compilation message

friend.cpp: In function 'll dfs(ll)':
friend.cpp:21:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(ii=0;ii<v[aa].size();ii++)
           ~~^~~~~~~~~~~~~
friend.cpp: In function 'll depe(ll, ll, ll)':
friend.cpp:34:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(ii=0;ii<v[aa].size();ii++)
            ~~^~~~~~~~~~~~~
friend.cpp: In function 'int findSample(int, int*, int*, int*)':
friend.cpp:60:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(j=0;j<v[host[i]].size();j++)
             ~^~~~~~~~~~~~~~~~~~
friend.cpp:90:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^

Subtask #1
0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	5 ms	4224 KB	Output isn't correct
2	Halted	0 ms	0 KB	-

Subtask #2
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	2688 KB	Output is correct
2	Correct	4 ms	2688 KB	Output is correct
3	Correct	4 ms	2844 KB	Output is correct
4	Correct	4 ms	2688 KB	Output is correct
5	Correct	4 ms	2816 KB	Output is correct
6	Correct	4 ms	2688 KB	Output is correct
7	Correct	4 ms	2688 KB	Output is correct
8	Correct	4 ms	2688 KB	Output is correct
9	Correct	4 ms	2816 KB	Output is correct
10	Correct	4 ms	2688 KB	Output is correct

Subtask #3
8.0 / 8.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	4 ms	2688 KB	Output is correct
2	Correct	4 ms	2688 KB	Output is correct
3	Correct	4 ms	2688 KB	Output is correct
4	Correct	4 ms	2688 KB	Output is correct
5	Correct	4 ms	2816 KB	Output is correct
6	Correct	4 ms	2816 KB	Output is correct
7	Correct	4 ms	2688 KB	Output is correct
8	Correct	4 ms	2688 KB	Output is correct
9	Correct	5 ms	2688 KB	Output is correct
10	Correct	4 ms	2688 KB	Output is correct