Submission #787943

#	Time	Username	Problem	Language	Result	Execution time	Memory
787943		NothingXD	Friend (IOI14_friend)	C++17	100 / 100	22 ms	3068 KiB

friend

#include "friend.h"
#include<bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
typedef complex<ld> point;

void debug_out(){cerr << endl;}

template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T){
	cout << H << ' ';
	debug_out(T...);
}

#define debug(...) cerr << "(" << #__VA_ARGS__ << "): ", debug_out(__VA_ARGS__)
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define MP(x, y) make_pair(x, y)

const int maxn = 1e5 + 10;

int dp[maxn][2];

// Find out best sample
int findSample(int n,int w[],int p[],int t[]){
	for (int i = 0; i < n; i++){
		dp[i][1] = w[i];
	}
	for (int i = n-1; i; i--){
		if (t[i] == 0){
			dp[p[i]][0] += max(dp[i][0], dp[i][1]);
			dp[p[i]][1] += dp[i][0];
		}
		else if (t[i] == 1){
			dp[p[i]][1] = max({dp[p[i]][1] + dp[i][1], dp[p[i]][1] + dp[i][0] , dp[p[i]][0] + dp[i][1]});
			dp[p[i]][0] += dp[i][0];
		}
		else{
			dp[p[i]][1] = max(dp[i][1] + dp[p[i]][0], dp[p[i]][1] + dp[i][0]);
			dp[p[i]][0] += dp[i][0];
		}
	}
	return max(dp[0][0], dp[0][1]);
}

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