oj.uz

Submission #917089

# Submission time Handle Problem Language Result Execution time Memory
917089 2024-01-27T06:50:56 Z penguin133 Truck Driver (IOI23_deliveries) C++17
22 / 100
 5500 ms 25328 KB 
#include <bits/stdc++.h>
using namespace std;
 
#include "deliveries.h"
//#define int long long
typedef long long ll;
#define pi pair<ll, ll>
#define pii pair<int, pi>
#define fi first
#define se second
#ifdef _WIN32
#define getchar_unlocked _getchar_nolock
#endif
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
 
vector <int> t, w, u, v;
ll dist[300005];
 
struct node{
	int s, e, m; ll val, val2;
	node *l, *r;
	node(int _s, int _e){
		s = _s, e = _e, m = (s + e) >> 1;
		if(s != e)l = new node(s, m), r = new node(m+1, e);
		val = val2 = 0;
	}
	
	void upd(int p, ll v){
		if(s == e){
			val = v;
			val2 = v * dist[p];
			return;
		}
		if(p <= m)l->upd(p, v);
		else r->upd(p, v);
		val = l->val + r->val;
		val2 = l->val2 + r->val2;
	}
	
	pi qry(int a, int b){
		if(a > b)return {0, 0};
		if(s == a && b == e)return {val,val2};
		if(b <= m)return l->qry(a, b);
		if(a > m)return r->qry(a ,b);
		pi lft = l->qry(a, m), rgt = r->qry(m+1, b);
		return {lft.fi + rgt.fi, lft.se + rgt.se};
	}
}*root;
ll n, sm, par[100005], shit[100005], tot[100005], cnt = 0;
vector <pi> adj[100005];
void dfs(int x, ll cur){
	dist[x] = cur;
	tot[x] = w[x], shit[x] = dist[x] * w[x];
	for(auto [i, j] : adj[x]){
		par[i] = x;
		dfs(i, cur + j);
		tot[x] += tot[i];
		shit[x] += shit[i];
	}
}
/*
int lca(int u, int v){
	if(dep[u] > dep[v])swap(u, v);
	int df = dep[v] - dep[u];
	for(int i = 0; i <= 19; i++)if(df >> i & 1)v = par[i][v];
	if(u == v)return u;
	for(int i = 19; i >= 0; i--)if(par[i][u] != par[i][v])u = par[i][u], v = par[i][v];
	return par[0][u];
}
*/
 
void init(int N, std::vector<int> U, std::vector<int> V, std::vector<int> T, std::vector<int> W) {
	u = U; v = V; t = T; w = W;
	for(int i = 0; i < N - 1; i++)adj[U[i]].push_back({V[i], T[i]});
	dfs(0, 0);
	//for(int i = 0; i < N; i++)back[S[i]] = i;
	//for(int i = 1; i < N; i++)dist[i] = dist[i - 1] + t[i - 1];
	//root = new node(0, N - 1);
	n = N;
	//for(int i = 0; i < N; i++)root->upd(i, w[i]), sm += w[i];
	return;
}
 
long long max_time(int S, int X) {
	
	int tmp = S;
	while(1){
		tot[tmp] += (ll)X - w[S];
		shit[tmp] += 1ll * (X - w[S]) * dist[S];
		if(!tmp)break;
		tmp = par[tmp];
	}
	w[S] = X;
	ll bruh = 0, ext = 0, cur = 0;
	while(1){
		ext += w[bruh];
		if(adj[bruh].empty()){
			cur += 2 * dist[bruh];
			break;
		}
		ll brr = 0, mx = 0;
		
		//ll x = bruh * 2 + 1, y = bruh * 2 + 2;
		for(auto [i, j] : adj[bruh])brr += tot[i], mx = max(mx, tot[i]);
		if(mx - ext > brr - mx){
			ll bruh2 = 0;
			for(auto [i, j] : adj[bruh])bruh2 += shit[i];
			for(auto [i, j] : adj[bruh]){
				if(tot[i] == mx){
					bruh2 -= shit[i];
					cur += (bruh2 - (brr - mx) * dist[bruh]) * 2;
					cur += j * 2 * (brr - mx + ext);
					ext += brr - mx;
					bruh = i;
					break;
				}
			}
		}
		else{
			brr = 0; ll brr2 = 0;
			for(auto [i, j] : adj[bruh])brr += shit[i], brr2 += tot[i];
			cur += (brr - brr2 * dist[bruh]) * 2 + 2 * dist[bruh];
			break;
		}
		/*
		if(tot[x] > tot[y]){
			cur += (shit[y] - tot[y] * dist[bruh]) * 2;
			cur += adj[bruh][0].se * 2 * (tot[y] + ext);
			ext += tot[y];
			bruh = x;
		}
		else{
			cur += (shit[x] - tot[x] * dist[bruh]) * 2;
			cur += adj[bruh][1].se * 2 * (tot[x] + ext);
			ext += tot[x];
			bruh = y;
		}
		*/
	}
	return cur;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 13904 KB Output is correct
2 Correct 70 ms 13908 KB Output is correct
3 Correct 72 ms 14160 KB Output is correct
4 Correct 72 ms 13984 KB Output is correct
5 Correct 70 ms 14068 KB Output is correct

Subtask #2
0.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6748 KB Output is correct
2 Correct 3 ms 6748 KB Output is correct
3 Correct 5 ms 6748 KB Output is correct
4 Correct 4 ms 6744 KB Output is correct
5 Correct 5 ms 6748 KB Output is correct
6 Correct 7 ms 6756 KB Output is correct
7 Correct 5 ms 6748 KB Output is correct
8 Correct 4 ms 6900 KB Output is correct
9 Correct 6 ms 6748 KB Output is correct
10 Correct 7 ms 6748 KB Output is correct
11 Correct 2 ms 6748 KB Output is correct
12 Correct 2 ms 6744 KB Output is correct
13 Correct 2 ms 6748 KB Output is correct
14 Incorrect 2 ms 6748 KB 3rd lines differ - on the 1st token, expected: '63174', found: '0'
15 Halted 0 ms 0 KB -

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 13904 KB Output is correct
2 Correct 70 ms 13908 KB Output is correct
3 Correct 72 ms 14160 KB Output is correct
4 Correct 72 ms 13984 KB Output is correct
5 Correct 70 ms 14068 KB Output is correct
6 Correct 2 ms 6748 KB Output is correct
7 Correct 3 ms 6748 KB Output is correct
8 Correct 22 ms 8028 KB Output is correct
9 Correct 227 ms 20012 KB Output is correct
10 Correct 212 ms 20020 KB Output is correct
11 Correct 212 ms 20020 KB Output is correct
12 Correct 143 ms 21396 KB Output is correct
13 Correct 131 ms 21300 KB Output is correct
14 Correct 180 ms 21396 KB Output is correct

Subtask #4
0.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 13904 KB Output is correct
2 Correct 70 ms 13908 KB Output is correct
3 Correct 72 ms 14160 KB Output is correct
4 Correct 72 ms 13984 KB Output is correct
5 Correct 70 ms 14068 KB Output is correct
6 Correct 2 ms 6744 KB Output is correct
7 Correct 16 ms 6744 KB Output is correct
8 Correct 1366 ms 9048 KB Output is correct
9 Execution timed out 5594 ms 25328 KB Time limit exceeded
10 Halted 0 ms 0 KB -

Subtask #5
0.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 13904 KB Output is correct
2 Correct 70 ms 13908 KB Output is correct
3 Correct 72 ms 14160 KB Output is correct
4 Correct 72 ms 13984 KB Output is correct
5 Correct 70 ms 14068 KB Output is correct
6 Correct 2 ms 6748 KB Output is correct
7 Correct 3 ms 6748 KB Output is correct
8 Correct 5 ms 6748 KB Output is correct
9 Correct 4 ms 6744 KB Output is correct
10 Correct 5 ms 6748 KB Output is correct
11 Correct 7 ms 6756 KB Output is correct
12 Correct 5 ms 6748 KB Output is correct
13 Correct 4 ms 6900 KB Output is correct
14 Correct 6 ms 6748 KB Output is correct
15 Correct 7 ms 6748 KB Output is correct
16 Correct 2 ms 6748 KB Output is correct
17 Correct 2 ms 6744 KB Output is correct
18 Correct 2 ms 6748 KB Output is correct
19 Incorrect 2 ms 6748 KB 3rd lines differ - on the 1st token, expected: '63174', found: '0'
20 Halted 0 ms 0 KB -