// And you curse yourself for things you never done
#include<bits/stdc++.h>
#define F first
#define S second
#define PB push_back
#define sz(s) int((s).size())
#define bit(n,k) (((n)>>(k))&1)
using namespace std;
typedef long long ll;
typedef pair<int,int> pii;
const int maxn = 1e5 + 10, mod = 1e9 + 7;
const ll inf = 1e18 + 10;
vector<pii> v[maxn];
int n, m;
vector<ll> peb[maxn];
int infs[maxn];
void dfs(int u, int S = 0){
if(u >= n){
peb[u].PB(S);
peb[u].PB(S);
return;
}
for(auto [y, x] : v[u]){
dfs(y, x);
infs[u]+= infs[y];
if(sz(peb[u]) < sz(peb[y]))
swap(peb[u], peb[y]);
for(ll x : peb[y])
peb[u].PB(x);
}
sort(peb[u].begin(), peb[u].end());
int N = sz(peb[u]) + infs[u];
if(sz(peb[u]) < (N/2)+1){
while(true){
}
}
ll L = peb[u][(N/2)-1], R = peb[u][(N/2)];
infs[u]+= sz(peb[u]) - (N/2) - 1;
peb[u].resize((N/2) + 1);
peb[u].pop_back(), peb[u].pop_back();
peb[u].PB(L + S);
peb[u].PB(R + S);
}
int main(){
ios_base::sync_with_stdio(false); cin.tie(0); cout.tie();
ll sm = 0;
cin >> n >> m;
for(int i = 1; i < n+m; i++){
int a, b;
cin >> a >> b;
v[--a].PB({i, b});
sm+= b;
}
dfs(0);
sort(peb[0].begin(), peb[0].end());
int N = sz(peb[0]) + infs[0];
ll bst = peb[0][(N/2)-1];
ll df = 0;
for(ll x : peb[0]){
df+= abs(x - bst);
df-= x;
}
df+= -bst * infs[0];
ll ans = df + sm *2;
return cout << ans/2 << endl, 0;
}
Compilation message
fireworks.cpp: In function 'void dfs(int, int)':
fireworks.cpp:31:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
31 | for(auto [y, x] : v[u]){
| ^
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 2 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 3 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 4 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 5 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 6 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 7 |
Correct |
4 ms |
5044 KB |
Output is correct |
| 8 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 9 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4992 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 2 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 3 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 4 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 5 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 6 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 7 |
Correct |
6 ms |
4992 KB |
Output is correct |
| 8 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 9 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 10 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 11 |
Correct |
4 ms |
5060 KB |
Output is correct |
| 12 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 13 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 14 |
Correct |
4 ms |
5120 KB |
Output is correct |
| 15 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 16 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 17 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 18 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 19 |
Correct |
4 ms |
4992 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 2 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 3 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 4 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 5 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 6 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 7 |
Correct |
4 ms |
5044 KB |
Output is correct |
| 8 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 9 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 11 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 12 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 14 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 16 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 17 |
Correct |
6 ms |
4992 KB |
Output is correct |
| 18 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 19 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 20 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 21 |
Correct |
4 ms |
5060 KB |
Output is correct |
| 22 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 23 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 24 |
Correct |
4 ms |
5120 KB |
Output is correct |
| 25 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 26 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 27 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 28 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 29 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 30 |
Correct |
5 ms |
4992 KB |
Output is correct |
| 31 |
Correct |
4 ms |
5120 KB |
Output is correct |
| 32 |
Correct |
5 ms |
5120 KB |
Output is correct |
| 33 |
Correct |
5 ms |
5120 KB |
Output is correct |
| 34 |
Correct |
6 ms |
5120 KB |
Output is correct |
| 35 |
Correct |
7 ms |
5248 KB |
Output is correct |
| 36 |
Correct |
9 ms |
5248 KB |
Output is correct |
| 37 |
Correct |
7 ms |
5248 KB |
Output is correct |
| 38 |
Correct |
11 ms |
5248 KB |
Output is correct |
| 39 |
Correct |
8 ms |
5248 KB |
Output is correct |
| 40 |
Correct |
6 ms |
5888 KB |
Output is correct |
| 41 |
Correct |
6 ms |
5888 KB |
Output is correct |
| 42 |
Correct |
5 ms |
5248 KB |
Output is correct |
| 43 |
Correct |
76 ms |
5504 KB |
Output is correct |
| 44 |
Correct |
71 ms |
5496 KB |
Output is correct |
| 45 |
Correct |
80 ms |
5496 KB |
Output is correct |
| 46 |
Correct |
9 ms |
5376 KB |
Output is correct |
| 47 |
Correct |
8 ms |
5428 KB |
Output is correct |
| 48 |
Correct |
6 ms |
5376 KB |
Output is correct |
| 49 |
Correct |
6 ms |
5376 KB |
Output is correct |
| 50 |
Correct |
6 ms |
5348 KB |
Output is correct |
| 51 |
Correct |
6 ms |
5248 KB |
Output is correct |
| 52 |
Correct |
7 ms |
5248 KB |
Output is correct |
| 53 |
Correct |
6 ms |
5376 KB |
Output is correct |
| 54 |
Correct |
6 ms |
5376 KB |
Output is correct |
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 2 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 3 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 4 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 5 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 6 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 7 |
Correct |
4 ms |
5044 KB |
Output is correct |
| 8 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 9 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 10 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 11 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 12 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 13 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 14 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 15 |
Correct |
3 ms |
4992 KB |
Output is correct |
| 16 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 17 |
Correct |
6 ms |
4992 KB |
Output is correct |
| 18 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 19 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 20 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 21 |
Correct |
4 ms |
5060 KB |
Output is correct |
| 22 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 23 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 24 |
Correct |
4 ms |
5120 KB |
Output is correct |
| 25 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 26 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 27 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 28 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 29 |
Correct |
4 ms |
4992 KB |
Output is correct |
| 30 |
Correct |
5 ms |
4992 KB |
Output is correct |
| 31 |
Correct |
4 ms |
5120 KB |
Output is correct |
| 32 |
Correct |
5 ms |
5120 KB |
Output is correct |
| 33 |
Correct |
5 ms |
5120 KB |
Output is correct |
| 34 |
Correct |
6 ms |
5120 KB |
Output is correct |
| 35 |
Correct |
7 ms |
5248 KB |
Output is correct |
| 36 |
Correct |
9 ms |
5248 KB |
Output is correct |
| 37 |
Correct |
7 ms |
5248 KB |
Output is correct |
| 38 |
Correct |
11 ms |
5248 KB |
Output is correct |
| 39 |
Correct |
8 ms |
5248 KB |
Output is correct |
| 40 |
Correct |
6 ms |
5888 KB |
Output is correct |
| 41 |
Correct |
6 ms |
5888 KB |
Output is correct |
| 42 |
Correct |
5 ms |
5248 KB |
Output is correct |
| 43 |
Correct |
76 ms |
5504 KB |
Output is correct |
| 44 |
Correct |
71 ms |
5496 KB |
Output is correct |
| 45 |
Correct |
80 ms |
5496 KB |
Output is correct |
| 46 |
Correct |
9 ms |
5376 KB |
Output is correct |
| 47 |
Correct |
8 ms |
5428 KB |
Output is correct |
| 48 |
Correct |
6 ms |
5376 KB |
Output is correct |
| 49 |
Correct |
6 ms |
5376 KB |
Output is correct |
| 50 |
Correct |
6 ms |
5348 KB |
Output is correct |
| 51 |
Correct |
6 ms |
5248 KB |
Output is correct |
| 52 |
Correct |
7 ms |
5248 KB |
Output is correct |
| 53 |
Correct |
6 ms |
5376 KB |
Output is correct |
| 54 |
Correct |
6 ms |
5376 KB |
Output is correct |
| 55 |
Correct |
31 ms |
5752 KB |
Output is correct |
| 56 |
Correct |
226 ms |
7632 KB |
Output is correct |
| 57 |
Correct |
387 ms |
9336 KB |
Output is correct |
| 58 |
Runtime error |
51 ms |
15220 KB |
Execution killed with signal 11 |
| 59 |
Halted |
0 ms |
0 KB |
- |
