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답안 #172450

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
172450 2020-01-01T14:51:04 Z lobo_prix 경주 (Race) (IOI11_race) C++17
100 / 100
 1735 ms 59328 KB 
#include <bits/stdc++.h>

using namespace std;using f64 = double;using i64=long long;using u64=unsigned long long;
template<typename T> using Arr=vector<T>;
#define hfor(v, s, e) for(int v=(s);(s)<=v&&v<(e);++v)//half-opened range
#define hfori(v, s, e) for(int v=(e)-1;(s)<=v&&v<(e);--v)//inversion
#define hforo(v, s, e) int v=(s);for(;(s)<=v&&v<(e);++v)//out declaration
#define hforoi(v, s, e) int v=(e)-1; for(;(s)<=v&&v<(e);--v)
#define cfor(v, s, e) hfor(v,(s),(e)+1)//closed range
#define cfori(v, s, e) hfori(v,(s),(e)+1)
#define cforo(v, s, e) hforo(v,(s),(e)+1)
#define cforoi(v, s, e) hforoi(v,(s),(e)+1)
#define rep(v,x) hfor(v,0,(x))
#define repi(v,x) hfori(v,0,(x))
#define repo(v,x) hforo(v,0,(x))
#define all(x) (x).begin(),(x).end()
#define sz(x) ((int)(x).size())
#define pushb push_back
#define pushf push_front
#define popb pop_back
#define popf pop_front
#define empl emplace
#define emplb emplace_back
#define emplf emplace_front
#define fi first
#define se second
#define cxp constexpr
#define PQ std::priority_queue

#ifndef DEBUG
	#pragma GCC optimize ("Ofast")
	auto __PRE_RUN__=(ios::sync_with_stdio(0), cin.tie(0), cout.tie(0),(cout<<fixed<<setprecision(11)), 0);
#endif

template<typename T> cxp T inf() { return numeric_limits<T>::max() / 2; }
auto mapf(auto a, auto f){for(auto& x:a)x=f(x); return a;}
int rd(int lb, int ub){static mt19937 rng(time(0)^i64(new int)); return uniform_int_distribution<int>(lb, ub-1)(rng);}
int rd(int ub=inf<int>()){return rd(0,ub);}
const f64 pi=acosl(-1);
#define endl '\n'//not interactive?
#define int i64//MLE?
using pint = pair<int,int>;
using tint = tuple<int,int,int>;

const int N=200000;
int n,k;
Arr<pint> t[N];
int s[N];
int d[N];

int ct(int v, int sz_tot){
	int mx=-1;
	for(auto i:t[v])
		if(!d[i.fi] and (mx<0 or s[mx]<s[i.fi]))
			mx=i.fi;

	if(mx<0 or s[mx]*2<=sz_tot)
		return v;
	d[v]++;
	int ret=ct(mx, sz_tot);
	d[v]--;
	return ret;
}

int recalc(int v){
	d[v]++;
	s[v]=1;
	for(auto i:t[v])
		if(!d[i.fi])
			s[v]+=recalc(i.fi);
	d[v]--;
	return s[v];
}

void get_paths(int v, int dist, int cnt, multiset<pint>& z){
	z.insert({dist,cnt});
	if(d[v])
		return;
	d[v]++;
	for(auto i:t[v])
		if(!d[i.fi])
			get_paths(i.fi, dist+i.se, cnt+1, z);
	d[v]--;
}

int f(int v){
	recalc(v);
	v=ct(v, s[v]);

	d[v]++;
	int ret=inf<int>();

	multiset<pint> z;
	z.insert({0,0});
	for(auto i:t[v]){
		multiset<pint> y;
		if(!d[i.fi])
			get_paths(i.fi, i.se, 1, y);

		for(auto j:y){
			auto it = z.lower_bound({k-j.fi,0});
			if(it!=z.end() and it->fi==k-j.fi)
				ret=min(ret, j.se+it->se);
		}
		z.insert(all(y));
	}

	for(auto i:t[v])
		if(!d[i.fi])
			ret=min(ret, f(i.fi));
	//d[v]--;
	return ret;
}

#include "race.h"
signed best_path(signed N, signed K, signed H[][2], signed L[])
{
   	n=N;k=K;
  	rep(i,n-1){
		t[H[i][0]].push_back({H[i][1],L[i]});
		t[H[i][1]].push_back({H[i][0],L[i]});
	}
    int ans=f(0);
	return ans==inf<int>()?-1:ans;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 5112 KB Output is correct
4 Correct 6 ms 5112 KB Output is correct
5 Correct 6 ms 5112 KB Output is correct
6 Correct 6 ms 5112 KB Output is correct
7 Correct 6 ms 5112 KB Output is correct
8 Correct 7 ms 5112 KB Output is correct
9 Correct 6 ms 5112 KB Output is correct
10 Correct 6 ms 5112 KB Output is correct
11 Correct 6 ms 5116 KB Output is correct
12 Correct 6 ms 5112 KB Output is correct
13 Correct 6 ms 5112 KB Output is correct
14 Correct 6 ms 5112 KB Output is correct
15 Correct 6 ms 5112 KB Output is correct
16 Correct 6 ms 5112 KB Output is correct
17 Correct 6 ms 5112 KB Output is correct
18 Correct 6 ms 5112 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 5112 KB Output is correct
4 Correct 6 ms 5112 KB Output is correct
5 Correct 6 ms 5112 KB Output is correct
6 Correct 6 ms 5112 KB Output is correct
7 Correct 6 ms 5112 KB Output is correct
8 Correct 7 ms 5112 KB Output is correct
9 Correct 6 ms 5112 KB Output is correct
10 Correct 6 ms 5112 KB Output is correct
11 Correct 6 ms 5116 KB Output is correct
12 Correct 6 ms 5112 KB Output is correct
13 Correct 6 ms 5112 KB Output is correct
14 Correct 6 ms 5112 KB Output is correct
15 Correct 6 ms 5112 KB Output is correct
16 Correct 6 ms 5112 KB Output is correct
17 Correct 6 ms 5112 KB Output is correct
18 Correct 6 ms 5112 KB Output is correct
19 Correct 6 ms 5112 KB Output is correct
20 Correct 6 ms 5112 KB Output is correct
21 Correct 8 ms 5240 KB Output is correct
22 Correct 9 ms 5240 KB Output is correct
23 Correct 9 ms 5240 KB Output is correct
24 Correct 9 ms 5368 KB Output is correct
25 Correct 9 ms 5264 KB Output is correct
26 Correct 8 ms 5240 KB Output is correct
27 Correct 8 ms 5240 KB Output is correct
28 Correct 8 ms 5244 KB Output is correct
29 Correct 8 ms 5240 KB Output is correct
30 Correct 7 ms 5368 KB Output is correct
31 Correct 9 ms 5268 KB Output is correct
32 Correct 8 ms 5240 KB Output is correct
33 Correct 9 ms 5240 KB Output is correct
34 Correct 8 ms 5240 KB Output is correct
35 Correct 7 ms 5240 KB Output is correct
36 Correct 8 ms 5240 KB Output is correct
37 Correct 8 ms 5272 KB Output is correct
38 Correct 8 ms 5240 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 5112 KB Output is correct
4 Correct 6 ms 5112 KB Output is correct
5 Correct 6 ms 5112 KB Output is correct
6 Correct 6 ms 5112 KB Output is correct
7 Correct 6 ms 5112 KB Output is correct
8 Correct 7 ms 5112 KB Output is correct
9 Correct 6 ms 5112 KB Output is correct
10 Correct 6 ms 5112 KB Output is correct
11 Correct 6 ms 5116 KB Output is correct
12 Correct 6 ms 5112 KB Output is correct
13 Correct 6 ms 5112 KB Output is correct
14 Correct 6 ms 5112 KB Output is correct
15 Correct 6 ms 5112 KB Output is correct
16 Correct 6 ms 5112 KB Output is correct
17 Correct 6 ms 5112 KB Output is correct
18 Correct 6 ms 5112 KB Output is correct
19 Correct 670 ms 25504 KB Output is correct
20 Correct 659 ms 25848 KB Output is correct
21 Correct 647 ms 25796 KB Output is correct
22 Correct 553 ms 25564 KB Output is correct
23 Correct 733 ms 25336 KB Output is correct
24 Correct 339 ms 21672 KB Output is correct
25 Correct 764 ms 31864 KB Output is correct
26 Correct 516 ms 31864 KB Output is correct
27 Correct 642 ms 36128 KB Output is correct
28 Correct 1618 ms 58248 KB Output is correct
29 Correct 1697 ms 58232 KB Output is correct
30 Correct 585 ms 36160 KB Output is correct
31 Correct 599 ms 36088 KB Output is correct
32 Correct 694 ms 36100 KB Output is correct
33 Correct 1520 ms 46072 KB Output is correct
34 Correct 1668 ms 44312 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 5112 KB Output is correct
2 Correct 6 ms 5112 KB Output is correct
3 Correct 6 ms 5112 KB Output is correct
4 Correct 6 ms 5112 KB Output is correct
5 Correct 6 ms 5112 KB Output is correct
6 Correct 6 ms 5112 KB Output is correct
7 Correct 6 ms 5112 KB Output is correct
8 Correct 7 ms 5112 KB Output is correct
9 Correct 6 ms 5112 KB Output is correct
10 Correct 6 ms 5112 KB Output is correct
11 Correct 6 ms 5116 KB Output is correct
12 Correct 6 ms 5112 KB Output is correct
13 Correct 6 ms 5112 KB Output is correct
14 Correct 6 ms 5112 KB Output is correct
15 Correct 6 ms 5112 KB Output is correct
16 Correct 6 ms 5112 KB Output is correct
17 Correct 6 ms 5112 KB Output is correct
18 Correct 6 ms 5112 KB Output is correct
19 Correct 6 ms 5112 KB Output is correct
20 Correct 6 ms 5112 KB Output is correct
21 Correct 8 ms 5240 KB Output is correct
22 Correct 9 ms 5240 KB Output is correct
23 Correct 9 ms 5240 KB Output is correct
24 Correct 9 ms 5368 KB Output is correct
25 Correct 9 ms 5264 KB Output is correct
26 Correct 8 ms 5240 KB Output is correct
27 Correct 8 ms 5240 KB Output is correct
28 Correct 8 ms 5244 KB Output is correct
29 Correct 8 ms 5240 KB Output is correct
30 Correct 7 ms 5368 KB Output is correct
31 Correct 9 ms 5268 KB Output is correct
32 Correct 8 ms 5240 KB Output is correct
33 Correct 9 ms 5240 KB Output is correct
34 Correct 8 ms 5240 KB Output is correct
35 Correct 7 ms 5240 KB Output is correct
36 Correct 8 ms 5240 KB Output is correct
37 Correct 8 ms 5272 KB Output is correct
38 Correct 8 ms 5240 KB Output is correct
39 Correct 670 ms 25504 KB Output is correct
40 Correct 659 ms 25848 KB Output is correct
41 Correct 647 ms 25796 KB Output is correct
42 Correct 553 ms 25564 KB Output is correct
43 Correct 733 ms 25336 KB Output is correct
44 Correct 339 ms 21672 KB Output is correct
45 Correct 764 ms 31864 KB Output is correct
46 Correct 516 ms 31864 KB Output is correct
47 Correct 642 ms 36128 KB Output is correct
48 Correct 1618 ms 58248 KB Output is correct
49 Correct 1697 ms 58232 KB Output is correct
50 Correct 585 ms 36160 KB Output is correct
51 Correct 599 ms 36088 KB Output is correct
52 Correct 694 ms 36100 KB Output is correct
53 Correct 1520 ms 46072 KB Output is correct
54 Correct 1668 ms 44312 KB Output is correct
55 Correct 39 ms 7160 KB Output is correct
56 Correct 41 ms 7032 KB Output is correct
57 Correct 585 ms 25132 KB Output is correct
58 Correct 128 ms 19880 KB Output is correct
59 Correct 589 ms 32068 KB Output is correct
60 Correct 1735 ms 58976 KB Output is correct
61 Correct 607 ms 36856 KB Output is correct
62 Correct 570 ms 36856 KB Output is correct
63 Correct 700 ms 36856 KB Output is correct
64 Correct 1599 ms 48100 KB Output is correct
65 Correct 1228 ms 46956 KB Output is correct
66 Correct 1691 ms 59328 KB Output is correct
67 Correct 404 ms 35928 KB Output is correct
68 Correct 749 ms 42608 KB Output is correct
69 Correct 822 ms 43008 KB Output is correct
70 Correct 729 ms 40952 KB Output is correct