Submission #1176826

#	Time	Username	Problem	Language	Result	Execution time	Memory
1176826		Kaztaev_Alisher	Tree (IOI24_tree)	C++20	10 / 100	2097 ms	27808 KiB

tree

#include <bits/stdc++.h>

#define ios ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define file(s) if (fopen(s".in", "r")) freopen(s".in", "r", stdin), freopen(s".out", "w", stdout)
#define all(a) a.begin() , a.end()
#define F first
#define S second

using namespace std;
using ll = long long;

const ll N = 2e5+5 , inf = 2e9 + 7;
const ll INF = 1e18 ,   mod = 1e9+7;

ll n , w[N] , p[N] , sz[N] , c[N];
vector<int> g[N];
void init(vector<int> P, vector<int> W) {
  	n = (int)P.size();
	for(int i = 1; i <= n; i++){
		p[i] = P[i-1]+1;
		w[i] = W[i-1]; 
	}
	for(int i = 2; i <= n; i++){
		g[p[i]].push_back(i);
	}
}

void dfs(ll v , ll L , ll R){
	sz[v] = 0;
	c[v] = 0;
	for(int to : g[v]){
		dfs(to,L,R);
		sz[v] += sz[to];
	}
	if(g[v].size() == 0){
		c[v] = sz[v] = L;		
	} else {
		if(sz[v] > R){
			c[v] = R-sz[v];
		} else if(sz[v] < L){
			c[v] = L-sz[v];
		}
		sz[v] += c[v]; 
	}
}
long long query(int L, int R) {
	dfs(1,L,R);
	ll ans = 0;
	for(int i = 1; i <= n; i++){
		ans += abs(c[i])*w[i];
	}	
	return ans;
}
// int main() {
  // int N;
  // assert(1 == scanf("%d", &N));
  // std::vector<int> P(N);
  // P[0] = -1;
  // for (int i = 1; i < N; i++)
    // assert(1 == scanf("%d", &P[i]));
  // std::vector<int> W(N);
  // for (int i = 0; i < N; i++)
    // assert(1 == scanf("%d", &W[i]));
  // int Q;
  // assert(1 == scanf("%d", &Q));
  // std::vector<int> L(Q), R(Q);
  // for (int j = 0; j < Q; j++)
    // assert(2 == scanf("%d%d", &L[j], &R[j]));
  // fclose(stdin);
// 
  // init(P, W);
  // std::vector<long long> A(Q);
  // for (int j = 0; j < Q; j++)
    // A[j] = query(L[j], R[j]);
// 
  // for (int j = 0; j < Q; j++)
    // printf("%lld\n", A[j]);
  // fclose(stdout);
// 
  // return 0;
// }

• Subtask 0: 0 / 0
• Subtask 1: 10 / 10
• Subtask 2: 0 / 13
• Subtask 3: 0 / 18
• Subtask 4: 0 / 7
• Subtask 5: 0 / 11
• Subtask 6: 0 / 22
• Subtask 7: 0 / 19