oj.uz

Submission #917087

# Submission time Handle Problem Language Result Execution time Memory
917087 2024-01-27T06:45:43 Z penguin133 Truck Driver (IOI23_deliveries) C++17
22 / 100
 5500 ms 25396 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] += 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 13932 KB Output is correct
2 Correct 71 ms 13908 KB Output is correct
3 Correct 71 ms 14164 KB Output is correct
4 Correct 70 ms 13964 KB Output is correct
5 Correct 71 ms 14208 KB Output is correct

Subtask #2
0.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 6744 KB Output is correct
2 Correct 4 ms 6748 KB Output is correct
3 Correct 5 ms 6748 KB Output is correct
4 Correct 4 ms 6748 KB Output is correct
5 Correct 5 ms 6748 KB Output is correct
6 Correct 7 ms 6744 KB Output is correct
7 Correct 4 ms 6744 KB Output is correct
8 Correct 4 ms 6748 KB Output is correct
9 Correct 5 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 6748 KB Output is correct
13 Correct 2 ms 6744 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 13932 KB Output is correct
2 Correct 71 ms 13908 KB Output is correct
3 Correct 71 ms 14164 KB Output is correct
4 Correct 70 ms 13964 KB Output is correct
5 Correct 71 ms 14208 KB Output is correct
6 Correct 1 ms 6744 KB Output is correct
7 Correct 3 ms 6748 KB Output is correct
8 Correct 17 ms 8028 KB Output is correct
9 Correct 208 ms 19796 KB Output is correct
10 Correct 193 ms 20016 KB Output is correct
11 Correct 188 ms 19856 KB Output is correct
12 Correct 132 ms 21296 KB Output is correct
13 Correct 136 ms 21296 KB Output is correct
14 Correct 132 ms 21396 KB Output is correct

Subtask #4
0.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 13932 KB Output is correct
2 Correct 71 ms 13908 KB Output is correct
3 Correct 71 ms 14164 KB Output is correct
4 Correct 70 ms 13964 KB Output is correct
5 Correct 71 ms 14208 KB Output is correct
6 Correct 2 ms 6744 KB Output is correct
7 Correct 18 ms 6744 KB Output is correct
8 Correct 1365 ms 9048 KB Output is correct
9 Execution timed out 5553 ms 25396 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 13932 KB Output is correct
2 Correct 71 ms 13908 KB Output is correct
3 Correct 71 ms 14164 KB Output is correct
4 Correct 70 ms 13964 KB Output is correct
5 Correct 71 ms 14208 KB Output is correct
6 Correct 2 ms 6744 KB Output is correct
7 Correct 4 ms 6748 KB Output is correct
8 Correct 5 ms 6748 KB Output is correct
9 Correct 4 ms 6748 KB Output is correct
10 Correct 5 ms 6748 KB Output is correct
11 Correct 7 ms 6744 KB Output is correct
12 Correct 4 ms 6744 KB Output is correct
13 Correct 4 ms 6748 KB Output is correct
14 Correct 5 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 6748 KB Output is correct
18 Correct 2 ms 6744 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 -