Submission #97409

#	Time	Username	Problem	Language	Result	Execution time	Memory
97409		MvC	Friend (IOI14_friend)	C++11	100 / 100	50 ms	3516 KiB

friend

#pragma GCC optimize("O3")
#include "friend.h"
#include<bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=1e5+50;
const int mod=1e9+7;
using namespace std;
int f[nmax],g[nmax];
int findSample(int n,int c[],int host[],int pr[])
{
	int h,i;
	for(i=0;i<n;i++)f[i]=c[i];
	for(i=n-1;i>0;i--)
	{
		h=host[i];
		if(pr[i]==0)
		{
			f[h]=max(f[h]+g[i],f[i]+g[h]);
			g[h]=max(g[i]+g[h],f[i]+g[h]);
		}
		else if(pr[i]==2)
		{
			f[h]=max(f[h]+g[i],f[i]+g[h]);
			g[h]+=g[i];
		}
		else
		{
			f[h]=max(max(f[h]+g[i],f[i]+g[h]),f[h]+f[i]);
			g[h]+=g[i];
		}
	}
	return max(g[0],f[0]);
}
/*int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	
    return 0;
}*/

• Subtask 1: 11 / 11
• Subtask 2: 8 / 8
• Subtask 3: 8 / 8
• Subtask 4: 19 / 19
• Subtask 5: 23 / 23
• Subtask 6: 31 / 31