#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];
dp[0][1] = A[1];
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){
int a = 0;
for (auto j : E[u[i]]){
E[i].pb(j);
E[j].pb(i);
dp[i][0] += max(dp[j][0], dp[j][1]);
a += dp[j][0];
}
dp[i][1] = a+A[i];
}
if (v[i] == 0 or v[i] == 2){
E[i].pb(u[i]);
E[u[i]].pb(i);
dp[i][0] = max(dp[u[i]][0], dp[u[i]][1]);
dp[i][1] = dp[u[i]][0]+A[i];
}
}
if (!sub2) return max(dp[n-1][1], dp[n-1][0]);
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);
// }
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2644 KB |
Output is correct |
2 |
Correct |
2 ms |
2740 KB |
Output is correct |
3 |
Incorrect |
1 ms |
2644 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
2644 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
2 ms |
3540 KB |
Output is correct |
2 |
Correct |
5 ms |
6484 KB |
Output is correct |
3 |
Correct |
1 ms |
2644 KB |
Output is correct |
4 |
Correct |
3 ms |
5332 KB |
Output is correct |
5 |
Correct |
5 ms |
6484 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 |
2656 KB |
Output is correct |
10 |
Correct |
6 ms |
6740 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2644 KB |
Output is correct |
2 |
Incorrect |
1 ms |
2644 KB |
Output isn't correct |
3 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
1 ms |
2644 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2644 KB |
Output is correct |
2 |
Correct |
1 ms |
2644 KB |
Output is correct |
3 |
Incorrect |
1 ms |
2568 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |