oj.uz

Submission #748068

# Submission time Handle Problem Language Result Execution time Memory
748068 2023-05-25T10:57:51 Z onebit1024 City Mapping (NOI18_citymapping) C++17
75.09 / 100
 243 ms 928 KB 
#include "citymapping.h"
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define pb push_back
#define all(c) c.begin(), c.end()
#define endl "\n"

const double PI=3.141592653589;


void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");} 

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#ifndef ONLINE_JUDGE
#define dbg(x...) cerr << "LINE(" << __LINE__ << ") -> " <<"[" << #x << "] = ["; _print(x)
#else
#define dbg(x...)
#endif

vector<int>sub,in,out;
vector<vector<int>>adj;
int t = 1;
void comp(int u, int p,set<ll>&active){
	sub[u] = 1;
	in[u] = t++;
	for(int v : adj[u]){
		if(v==p || !active.count(v))continue;
		comp(v,u,active);
		sub[u]+=sub[v];
	}
	out[u] = t++;
}
bool above(int u, int v){
	if(u==v)return 1;
	return in[u] < in[v] && out[u] > out[v];
}
void find_roads(int n, int Q, int a[], int b[], int w[]) {
	vector<pair<ll,ll>>k;
	vector<ll>dist1(n+1);
	for(int i = 2;i<=n;++i)dist1[i] = get_distance(1,i);
	for(int i = 2;i<=n;++i)k.pb({dist1[i],i});

	sort(all(k));
	adj.resize(n+1);
	sub.resize(n+1);
	in.resize(n+1);
	out.resize(n+1);
	set<ll>active = {1};
	int p = 0;
	for(int i = 0;i<k.size();++i){
		int prev = 1;
		while(active.size()>1){
			sub = vector<int>(n+1);
			in = vector<int>(n+1);
			out = vector<int>(n+1);
			t = 1;
			comp(prev,-1,active);
			int sz = active.size();
			int mn = 1e9, x = 1;
			for(auto w : active){
				if(abs((sz/2)-sub[w]) < mn){
					mn = abs((sz/2)-sub[w]);
					x = w;
				}
			}
			int u = k[i].second;
			set<ll>ne;
			ll kkk = get_distance(x,u);
			if(dist1[x]+kkk == dist1[u]){
				// all nodes in subtree of x are valid
				prev = x;
				for(auto y : active){
					if(above(x,y))ne.insert(y);
				}
				mn = 1e9;
				for(auto y : ne){
					if(in[y] < mn)mn = in[y],prev = y;
				}
			}else{
				// all nodes not in subtree of x are valid
				prev = 1;
				for(auto y : active){
					if(!above(x,y))ne.insert(y);
				}
				mn = 1e9;
				for(auto y : ne){
					if(in[y] < mn)mn = in[y],prev = y;
				}
			}
			active = ne;
		}
		int v = *active.begin();
		adj[k[i].second].pb(v);
		adj[v].pb(k[i].second);
		a[p] = k[i].second;
		b[p] = v;
		w[p++] = get_distance(k[i].second,v);
		for(int j = 0;j<=i;++j)active.insert(k[j].second);
		active.insert(1);
	}
	return;
}

Compilation message

citymapping.cpp: In function 'void find_roads(int, int, int*, int*, int*)':
citymapping.cpp:69:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |  for(int i = 0;i<k.size();++i){
      |                ~^~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 227 ms 672 KB Correct: 9971 out of 500000 queries used.
2 Correct 220 ms 548 KB Correct: 10288 out of 500000 queries used.
3 Correct 229 ms 544 KB Correct: 10418 out of 500000 queries used.
4 Correct 234 ms 532 KB Correct: 10493 out of 500000 queries used.
5 Correct 227 ms 516 KB Correct: 10159 out of 500000 queries used.

Subtask #2
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 227 ms 672 KB Correct: 9971 out of 500000 queries used.
2 Correct 220 ms 548 KB Correct: 10288 out of 500000 queries used.
3 Correct 229 ms 544 KB Correct: 10418 out of 500000 queries used.
4 Correct 234 ms 532 KB Correct: 10493 out of 500000 queries used.
5 Correct 227 ms 516 KB Correct: 10159 out of 500000 queries used.
6 Correct 216 ms 612 KB Correct: 9935 out of 500000 queries used.
7 Correct 231 ms 744 KB Correct: 10302 out of 500000 queries used.
8 Correct 232 ms 544 KB Correct: 10481 out of 500000 queries used.
9 Correct 234 ms 536 KB Correct: 10445 out of 500000 queries used.
10 Correct 233 ms 708 KB Correct: 10131 out of 500000 queries used.

Subtask #3
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 222 ms 708 KB Correct: 9882 out of 12000 queries used.
2 Correct 217 ms 700 KB Correct: 9903 out of 12000 queries used.
3 Correct 223 ms 696 KB Correct: 9981 out of 12000 queries used.
4 Correct 220 ms 596 KB Correct: 9905 out of 12000 queries used.
5 Correct 223 ms 712 KB Correct: 9879 out of 12000 queries used.

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 222 ms 708 KB Correct: 9882 out of 12000 queries used.
2 Correct 217 ms 700 KB Correct: 9903 out of 12000 queries used.
3 Correct 223 ms 696 KB Correct: 9981 out of 12000 queries used.
4 Correct 220 ms 596 KB Correct: 9905 out of 12000 queries used.
5 Correct 223 ms 712 KB Correct: 9879 out of 12000 queries used.
6 Correct 227 ms 596 KB Correct: 9958 out of 12000 queries used.
7 Correct 225 ms 564 KB Correct: 9936 out of 12000 queries used.
8 Correct 220 ms 772 KB Correct: 9980 out of 12000 queries used.
9 Correct 221 ms 580 KB Correct: 9946 out of 12000 queries used.
10 Correct 214 ms 648 KB Correct: 9913 out of 12000 queries used.

Subtask #5
18.09 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 227 ms 672 KB Correct: 9971 out of 500000 queries used.
2 Correct 220 ms 548 KB Correct: 10288 out of 500000 queries used.
3 Correct 229 ms 544 KB Correct: 10418 out of 500000 queries used.
4 Correct 234 ms 532 KB Correct: 10493 out of 500000 queries used.
5 Correct 227 ms 516 KB Correct: 10159 out of 500000 queries used.
6 Correct 216 ms 612 KB Correct: 9935 out of 500000 queries used.
7 Correct 231 ms 744 KB Correct: 10302 out of 500000 queries used.
8 Correct 232 ms 544 KB Correct: 10481 out of 500000 queries used.
9 Correct 234 ms 536 KB Correct: 10445 out of 500000 queries used.
10 Correct 233 ms 708 KB Correct: 10131 out of 500000 queries used.
11 Correct 222 ms 708 KB Correct: 9882 out of 12000 queries used.
12 Correct 217 ms 700 KB Correct: 9903 out of 12000 queries used.
13 Correct 223 ms 696 KB Correct: 9981 out of 12000 queries used.
14 Correct 220 ms 596 KB Correct: 9905 out of 12000 queries used.
15 Correct 223 ms 712 KB Correct: 9879 out of 12000 queries used.
16 Correct 227 ms 596 KB Correct: 9958 out of 12000 queries used.
17 Correct 225 ms 564 KB Correct: 9936 out of 12000 queries used.
18 Correct 220 ms 772 KB Correct: 9980 out of 12000 queries used.
19 Correct 221 ms 580 KB Correct: 9946 out of 12000 queries used.
20 Correct 214 ms 648 KB Correct: 9913 out of 12000 queries used.
21 Correct 230 ms 684 KB Correct: 9937 out of 25000 queries used.
22 Correct 229 ms 700 KB Correct: 10320 out of 25000 queries used.
23 Correct 232 ms 580 KB Correct: 10235 out of 25000 queries used.
24 Correct 238 ms 712 KB Correct: 10201 out of 25000 queries used.
25 Correct 226 ms 552 KB Correct: 10454 out of 25000 queries used.
26 Correct 222 ms 604 KB Correct: 10356 out of 25000 queries used.
27 Correct 227 ms 544 KB Correct: 10454 out of 25000 queries used.
28 Correct 238 ms 596 KB Correct: 10495 out of 25000 queries used.
29 Correct 229 ms 680 KB Correct: 10463 out of 25000 queries used.
30 Correct 243 ms 708 KB Correct: 10414 out of 25000 queries used.
31 Correct 227 ms 540 KB Correct: 10491 out of 25000 queries used.
32 Correct 222 ms 752 KB Correct: 9925 out of 25000 queries used.
33 Correct 230 ms 552 KB Correct: 10450 out of 25000 queries used.
34 Correct 231 ms 672 KB Correct: 10484 out of 25000 queries used.
35 Correct 227 ms 596 KB Correct: 10469 out of 25000 queries used.
36 Correct 226 ms 536 KB Correct: 10439 out of 25000 queries used.
37 Correct 228 ms 588 KB Correct: 10460 out of 25000 queries used.
38 Correct 235 ms 604 KB Correct: 10471 out of 25000 queries used.
39 Correct 234 ms 540 KB Correct: 10462 out of 25000 queries used.
40 Correct 239 ms 604 KB Correct: 10502 out of 25000 queries used.
41 Correct 240 ms 568 KB Correct: 10508 out of 25000 queries used.
42 Correct 227 ms 604 KB Correct: 10457 out of 25000 queries used.
43 Correct 215 ms 656 KB Correct: 9956 out of 25000 queries used.
44 Correct 229 ms 792 KB Correct: 10421 out of 25000 queries used.
45 Correct 222 ms 540 KB Correct: 10400 out of 25000 queries used.
46 Correct 222 ms 548 KB Correct: 10366 out of 25000 queries used.
47 Correct 233 ms 824 KB Correct: 10498 out of 25000 queries used.
48 Correct 223 ms 600 KB Correct: 10446 out of 25000 queries used.
49 Correct 227 ms 716 KB Correct: 10442 out of 25000 queries used.
50 Correct 226 ms 812 KB Correct: 10492 out of 25000 queries used.
51 Correct 225 ms 696 KB Correct: 10459 out of 25000 queries used.
52 Correct 232 ms 548 KB Correct: 10505 out of 25000 queries used.
53 Correct 234 ms 716 KB Correct: 10493 out of 25000 queries used.
54 Correct 231 ms 716 KB Correct: 10370 out of 25000 queries used.
55 Correct 234 ms 592 KB Correct: 10433 out of 25000 queries used.
56 Correct 234 ms 788 KB Correct: 10444 out of 25000 queries used.
57 Correct 231 ms 608 KB Correct: 10517 out of 25000 queries used.
58 Correct 233 ms 588 KB Correct: 10429 out of 25000 queries used.
59 Correct 222 ms 540 KB Correct: 10447 out of 25000 queries used.
60 Correct 224 ms 656 KB Correct: 10122 out of 25000 queries used.
61 Correct 226 ms 540 KB Correct: 10094 out of 25000 queries used.
62 Correct 225 ms 552 KB Correct: 10079 out of 25000 queries used.
63 Correct 229 ms 588 KB Correct: 10138 out of 25000 queries used.
64 Correct 232 ms 536 KB Correct: 10103 out of 25000 queries used.
65 Correct 224 ms 588 KB Correct: 10205 out of 25000 queries used.
66 Correct 227 ms 584 KB Correct: 10116 out of 25000 queries used.
67 Correct 229 ms 844 KB Correct: 10260 out of 25000 queries used.
68 Correct 220 ms 572 KB Correct: 10236 out of 25000 queries used.
69 Correct 221 ms 596 KB Correct: 10271 out of 25000 queries used.
70 Correct 224 ms 928 KB Correct: 10261 out of 25000 queries used.