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답안 #939147

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
939147 2024-03-06T06:14:37 Z winter0101 City Mapping (NOI18_citymapping) C++14
73.03 / 100
 6 ms 8696 KB 
#include<bits/stdc++.h>
#include "citymapping.h"
using namespace std;
#define all(fl) fl.begin(),fl.end()
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define lb lower_bound
#define ub upper_bound
#define sz(a) (int)a.size()
#define pii pair<int,int>
#define pli pair<long long,int>
#define gcd __gcd
#define lcm(x,y) x*y/__gcd(x,y)
#define pil pair<int,long long>
vector<pii>aaa[1009];
mt19937_64 rng(101094);
long long d[1009][1009];
long long ask(int x,int y){
if (d[x][y]!=-1)return d[x][y];
return d[x][y]=d[y][x]=get_distance(x,y);
}
bool add[1009];
vector<int>xd[1009];
void solve(vector<int>&tmp){
if (sz(tmp)<=1)return;
shuffle(all(tmp),rng);
for (auto v:tmp)add[v]=0;
shuffle(all(tmp),rng);
int s=tmp[0],t=tmp.back();
ask(s,t);
vector<int>vertice;
for (auto v:tmp){
if (ask(s,v)+ask(t,v)==ask(s,t)){
vertice.pb(v);
add[v]=1;
}
}
//cout<<s<<" "<<t<<'\n';
sort(all(vertice),[&](int i,int j){
return ask(s,i)<ask(s,j);
});
auto add_edg=[&](int u,int v,int w){
aaa[u].pb({v,w});
aaa[v].pb({u,w});
//cerr<<u<<" "<<v<<" "<<w<<'\n';
return;
};
for1(i,1,sz(vertice)-1){
add_edg(vertice[i],vertice[i-1],ask(vertice[i],s)-ask(vertice[i-1],s));
}
for(auto v:tmp){
if (add[v])continue;
for (auto u:vertice){
if (ask(s,v)-ask(s,u)==ask(t,v)-ask(t,u)&&ask(s,v)>ask(s,u)){
xd[u].pb(v);
//cerr<<u<<" "<<v<<'\n';
}
}
}
for (auto u:vertice){
if (!xd[u].empty()){
if ((u!=s&&u!=t)||sz(aaa[u])>=2){
vector<int>cop;
cop.swap(xd[u]);
int mn=cop[0];
for (auto v:cop){
if (ask(s,v)<ask(s,mn)){
mn=v;
}
}
add_edg(u,mn,ask(s,mn)-ask(s,u));
solve(cop);
}
else {
sort(all(xd[u]),[&](int i,int j){
return ask(s,i)<ask(s,j);
});
vector<int>lft,rht;
lft.pb(xd[u][0]);
for (auto v:xd[u]){
if (v==xd[u][0])continue;
if (ask(xd[u][0],s)+ask(xd[u][0],v)==ask(s,v)){
lft.pb(v);
}
else {
rht.pb(v);
}
}
if (!lft.empty())add_edg(u,lft[0],ask(s,lft[0])-ask(s,u));
if (!rht.empty())add_edg(u,rht[0],ask(s,rht[0])-ask(s,u));
xd[u].clear();
solve(lft),solve(rht);
}
}
}
}
void find_roads(int N, int Q, int A[], int B[], int W[]) {
	for1(i,1,N){
	for1(j,1,N){
	d[i][j]=-1;
	}
	d[i][i]=0;
	}
	vector<int>tree;
	for1(i,1,N)tree.pb(i);
	solve(tree);
	int cnt=0;
	for1(i,1,N){
	for (auto v:aaa[i]){
    if (v.fi>i){
    A[cnt]=v.fi,B[cnt]=i,W[cnt]=v.se;
    cnt++;
    }
	}
	}
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8540 KB Correct: 4378 out of 500000 queries used.
2 Correct 3 ms 8540 KB Correct: 3361 out of 500000 queries used.
3 Correct 4 ms 8540 KB Correct: 7338 out of 500000 queries used.
4 Correct 3 ms 8540 KB Correct: 6992 out of 500000 queries used.
5 Correct 3 ms 8540 KB Correct: 6352 out of 500000 queries used.

Subtask #2
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8540 KB Correct: 4378 out of 500000 queries used.
2 Correct 3 ms 8540 KB Correct: 3361 out of 500000 queries used.
3 Correct 4 ms 8540 KB Correct: 7338 out of 500000 queries used.
4 Correct 3 ms 8540 KB Correct: 6992 out of 500000 queries used.
5 Correct 3 ms 8540 KB Correct: 6352 out of 500000 queries used.
6 Correct 5 ms 8540 KB Correct: 4002 out of 500000 queries used.
7 Correct 3 ms 8540 KB Correct: 6732 out of 500000 queries used.
8 Correct 5 ms 8540 KB Correct: 8600 out of 500000 queries used.
9 Correct 3 ms 8540 KB Correct: 8237 out of 500000 queries used.
10 Correct 4 ms 8540 KB Correct: 8203 out of 500000 queries used.

Subtask #3
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 8540 KB Correct: 10617 out of 12000 queries used.
2 Correct 4 ms 8540 KB Correct: 6374 out of 12000 queries used.
3 Correct 6 ms 8540 KB Correct: 11010 out of 12000 queries used.
4 Correct 5 ms 8540 KB Correct: 7355 out of 12000 queries used.
5 Correct 4 ms 8540 KB Correct: 6925 out of 12000 queries used.

Subtask #4
19.0 / 19.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 8540 KB Correct: 10617 out of 12000 queries used.
2 Correct 4 ms 8540 KB Correct: 6374 out of 12000 queries used.
3 Correct 6 ms 8540 KB Correct: 11010 out of 12000 queries used.
4 Correct 5 ms 8540 KB Correct: 7355 out of 12000 queries used.
5 Correct 4 ms 8540 KB Correct: 6925 out of 12000 queries used.
6 Correct 3 ms 8540 KB Correct: 4150 out of 12000 queries used.
7 Correct 4 ms 8540 KB Correct: 7161 out of 12000 queries used.
8 Correct 3 ms 8540 KB Correct: 5211 out of 12000 queries used.
9 Correct 4 ms 8536 KB Correct: 2753 out of 12000 queries used.
10 Correct 4 ms 8540 KB Correct: 6071 out of 12000 queries used.

Subtask #5
16.03 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 8540 KB Correct: 4378 out of 500000 queries used.
2 Correct 3 ms 8540 KB Correct: 3361 out of 500000 queries used.
3 Correct 4 ms 8540 KB Correct: 7338 out of 500000 queries used.
4 Correct 3 ms 8540 KB Correct: 6992 out of 500000 queries used.
5 Correct 3 ms 8540 KB Correct: 6352 out of 500000 queries used.
6 Correct 5 ms 8540 KB Correct: 4002 out of 500000 queries used.
7 Correct 3 ms 8540 KB Correct: 6732 out of 500000 queries used.
8 Correct 5 ms 8540 KB Correct: 8600 out of 500000 queries used.
9 Correct 3 ms 8540 KB Correct: 8237 out of 500000 queries used.
10 Correct 4 ms 8540 KB Correct: 8203 out of 500000 queries used.
11 Correct 4 ms 8540 KB Correct: 10617 out of 12000 queries used.
12 Correct 4 ms 8540 KB Correct: 6374 out of 12000 queries used.
13 Correct 6 ms 8540 KB Correct: 11010 out of 12000 queries used.
14 Correct 5 ms 8540 KB Correct: 7355 out of 12000 queries used.
15 Correct 4 ms 8540 KB Correct: 6925 out of 12000 queries used.
16 Correct 3 ms 8540 KB Correct: 4150 out of 12000 queries used.
17 Correct 4 ms 8540 KB Correct: 7161 out of 12000 queries used.
18 Correct 3 ms 8540 KB Correct: 5211 out of 12000 queries used.
19 Correct 4 ms 8536 KB Correct: 2753 out of 12000 queries used.
20 Correct 4 ms 8540 KB Correct: 6071 out of 12000 queries used.
21 Correct 4 ms 8540 KB Correct: 9538 out of 25000 queries used.
22 Correct 4 ms 8536 KB Correct: 3953 out of 25000 queries used.
23 Correct 3 ms 8540 KB Correct: 3945 out of 25000 queries used.
24 Correct 4 ms 8540 KB Correct: 6863 out of 25000 queries used.
25 Correct 3 ms 8540 KB Correct: 6886 out of 25000 queries used.
26 Correct 3 ms 8284 KB Correct: 7269 out of 25000 queries used.
27 Correct 4 ms 8540 KB Correct: 7660 out of 25000 queries used.
28 Correct 3 ms 8552 KB Correct: 6965 out of 25000 queries used.
29 Correct 3 ms 8540 KB Correct: 9129 out of 25000 queries used.
30 Correct 3 ms 8536 KB Correct: 7911 out of 25000 queries used.
31 Correct 3 ms 8540 KB Correct: 7890 out of 25000 queries used.
32 Correct 5 ms 8500 KB Correct: 7901 out of 25000 queries used.
33 Correct 3 ms 8540 KB Correct: 6959 out of 25000 queries used.
34 Correct 4 ms 8540 KB Correct: 7283 out of 25000 queries used.
35 Correct 4 ms 8520 KB Correct: 7286 out of 25000 queries used.
36 Correct 3 ms 8540 KB Correct: 7518 out of 25000 queries used.
37 Correct 4 ms 8540 KB Correct: 10894 out of 25000 queries used.
38 Correct 4 ms 8540 KB Correct: 10453 out of 25000 queries used.
39 Correct 3 ms 8540 KB Correct: 6917 out of 25000 queries used.
40 Correct 4 ms 8540 KB Correct: 7171 out of 25000 queries used.
41 Correct 3 ms 8540 KB Correct: 8079 out of 25000 queries used.
42 Correct 4 ms 8540 KB Correct: 9042 out of 25000 queries used.
43 Correct 4 ms 8540 KB Correct: 6643 out of 25000 queries used.
44 Correct 3 ms 8284 KB Correct: 6931 out of 25000 queries used.
45 Correct 3 ms 8284 KB Correct: 7176 out of 25000 queries used.
46 Correct 4 ms 8284 KB Correct: 7988 out of 25000 queries used.
47 Correct 3 ms 8540 KB Correct: 8020 out of 25000 queries used.
48 Correct 3 ms 8540 KB Correct: 6799 out of 25000 queries used.
49 Correct 3 ms 8540 KB Correct: 7536 out of 25000 queries used.
50 Correct 4 ms 8540 KB Correct: 8125 out of 25000 queries used.
51 Correct 3 ms 8540 KB Correct: 8225 out of 25000 queries used.
52 Correct 3 ms 8540 KB Correct: 8711 out of 25000 queries used.
53 Correct 3 ms 8440 KB Correct: 6940 out of 25000 queries used.
54 Correct 4 ms 8540 KB Correct: 5693 out of 25000 queries used.
55 Correct 3 ms 8540 KB Correct: 8658 out of 25000 queries used.
56 Correct 3 ms 8696 KB Correct: 7088 out of 25000 queries used.
57 Correct 4 ms 8540 KB Correct: 7965 out of 25000 queries used.
58 Correct 3 ms 8540 KB Correct: 7292 out of 25000 queries used.
59 Correct 3 ms 8540 KB Correct: 7309 out of 25000 queries used.
60 Correct 3 ms 8540 KB Correct: 7623 out of 25000 queries used.
61 Correct 3 ms 8540 KB Correct: 7013 out of 25000 queries used.
62 Correct 3 ms 8540 KB Correct: 7953 out of 25000 queries used.
63 Correct 4 ms 8540 KB Correct: 9391 out of 25000 queries used.
64 Correct 3 ms 8536 KB Correct: 8949 out of 25000 queries used.
65 Correct 4 ms 8540 KB Correct: 5274 out of 25000 queries used.
66 Correct 4 ms 8536 KB Correct: 5672 out of 25000 queries used.
67 Correct 4 ms 8536 KB Correct: 4592 out of 25000 queries used.
68 Correct 3 ms 8540 KB Correct: 7499 out of 25000 queries used.
69 Correct 3 ms 8540 KB Correct: 3328 out of 25000 queries used.
70 Correct 3 ms 8540 KB Correct: 5024 out of 25000 queries used.