oj.uz

Submission #808927

# Submission time Handle Problem Language Result Execution time Memory
808927 2023-08-05T12:32:39 Z OrazB Friend (IOI14_friend) C++14
46 / 100
 1000 ms 65536 KB 
#include <bits/stdc++.h>
#include "friend.h"
using namespace std;
#define all(x) (x).begin(), (x).end()
#define ll long long int
#define pii pair <int, int>
#define pb push_back
#define ff first
#define ss second

const int N = 1e5+5;
int c[N], dp[N][2];
ll mx = 0;
vector<int> E[N];

void bit(int x, int n, int A[]){
	if (x == n){
		ll sum = 0;
		for (int i = 0; i < n; i++){
			if (c[i]){
				for (auto j : E[i]) if (c[j]) return;
				sum += A[i];
			}
		}
		mx = max(mx, sum);
		return;
	}
	for (int i = 0; i < 2; i++){
		c[x] = i;
		bit(x+1, n, A);
	}
}
void dfs(int nd, int pr, int A[]){
	int a = 0;
	for (auto i : E[nd]){
		if (i == pr) continue;
		dfs(i, nd, A);
		a += dp[i][0];
		dp[nd][0] += max(dp[i][1], dp[i][0]);
	}
	dp[nd][1] = a+A[nd];
}

int findSample(int n, int A[], int u[], int v[]){
	int sub0 = 0, sub1 = 0, sub2 = 0;
	int sum = 0;
	for (int i = 0; i < n; i++) sum += A[i];
	for (int i = 1; i < n; i++){
		if (v[i] == 2) sub2 = 1;
		if (v[i] == 0) sub0 = 1;
		if (v[i] == 1) sub1 = 1;
 		if (v[i] == 1 or v[i] == 2){
			for (auto j : E[u[i]]){
				E[i].pb(j);
				E[j].pb(i);
			}
		}
		if (v[i] == 0 or v[i] == 2){
			E[i].pb(u[i]);
			E[u[i]].pb(i);
		}
	}
	if (!sub0 and !sub2) return sum;
	if (!sub0 and !sub1) return *max_element(A, A+n);
	if (!sub1 and !sub2){
		dfs(0, -1, A);
		return max(dp[0][1], dp[0][0]);
	}
	bit(0, n, A);
	return mx;
}


// int main ()
// {
// 	ios::sync_with_stdio(false);
// 	cin.tie(0);
// 	int n;
// 	cin >> n;
// 	int A[n], a[n], b[n];
// 	for (int i = 0; i < n; i++) cin >> A[i];
// 	for (int i = 1; i < n; i++) cin >> a[i] >> b[i];
// 	cout << findSample(n, A, a, b);
// }

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 2 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct
11 Correct 1 ms 2672 KB Output is correct
12 Correct 2 ms 2644 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 ms 2644 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 1 ms 2644 KB Output is correct
17 Correct 1 ms 2644 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 2 ms 2644 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3540 KB Output is correct
2 Correct 6 ms 6484 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 4 ms 5332 KB Output is correct
5 Correct 7 ms 6368 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 2 ms 3156 KB Output is correct
8 Correct 2 ms 3412 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 5 ms 6740 KB Output is correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 2 ms 2772 KB Output is correct
6 Correct 2 ms 2644 KB Output is correct
7 Correct 1 ms 2656 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 2 ms 2672 KB Output is correct
13 Correct 2 ms 2672 KB Output is correct
14 Correct 2 ms 2644 KB Output is correct
15 Correct 2 ms 2644 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2656 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 1 ms 2672 KB Output is correct
9 Correct 2 ms 2772 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Execution timed out 1069 ms 2644 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #6
0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2644 KB Output is correct
3 Correct 2 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2644 KB Output is correct
8 Correct 2 ms 2644 KB Output is correct
9 Correct 1 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Runtime error 126 ms 65536 KB Execution killed with signal 9
13 Halted 0 ms 0 KB -