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답안 #339773

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
339773 2020-12-26T07:45:47 Z Kerim 경주 (Race) (IOI11_race) C++17
100 / 100
 452 ms 73236 KB 
#include "race.h"
#include "bits/stdc++.h"
#define MAXN 200009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x)  cerr<< #x <<" = "<< x<<endl;
using namespace std;

typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
int n,k,ans=INF;
ll dis[MAXN];
vector<PII>adj[MAXN];
set<pair<ll,int> >s[MAXN];
void dfs(int nd,int pr,int lvl){
	tr(it,adj[nd]){
		int to=it->ff;
		if(to!=pr){
			dis[to]=dis[nd]+it->ss;
			dfs(to,nd,lvl+1);	
			if((int)s[to].size()>(int)s[nd].size())
				swap(s[to],s[nd]);
			__typeof((s[nd]).begin())itt;
			tr(it,s[to])
				if(dis[nd]*2+k>=it->ff){
					itt=s[nd].lower_bound(mp(dis[nd]*2+k-it->ff,-1));
					if(itt!=s[nd].end() and itt->ff+it->ff==k+dis[nd]*2)
						umin(ans,it->ss+itt->ss-2*lvl);	
				}
			tr(it,s[to])s[nd].insert(*it);
			s[to].clear();
		}
	}
	s[nd].insert(mp(dis[nd],lvl));
	__typeof((s[nd]).begin())itt=s[nd].lower_bound(mp(k+dis[nd],-1));
	if(itt!=s[nd].end() and itt->ff-dis[nd]==k)
		umin(ans,itt->ss-lvl);
}
int best_path(int N, int K, int h[][2], int l[]){
	n=N,k=K;
	for(int i=0;i<n-1;i++){
		int u=h[i][0],v=h[i][1];
		adj[u].pb(mp(v,l[i]));
		adj[v].pb(mp(u,l[i]));	
	}dfs(1,-1,0);if(ans==INF)ans=-1;
	return ans;
}
/*
static int N, K;
static int H[MAXN][2];
static int L[MAXN];
static int solution;

inline 
void my_assert(int e) {if (!e) abort();}

void read_input(){
  int i;
  my_assert(2==scanf("%d %d",&N,&K));
  for(i=0; i<N-1; i++)
    my_assert(3==scanf("%d %d %d",&H[i][0],&H[i][1],&L[i]));
  my_assert(1==scanf("%d",&solution));
}

int main(){
  freopen("grader.in.3","r",stdin);
  int ans;
  read_input();
  ans = best_path(N,K,H,L);
  if(ans==solution)
    printf("Correct.\n");
  else
    printf("Incorrect. Returned %d, Expected %d.\n",ans,solution);

  return 0;
}*/

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 14444 KB Output is correct
2 Correct 9 ms 14444 KB Output is correct
3 Correct 11 ms 14592 KB Output is correct
4 Correct 9 ms 14444 KB Output is correct
5 Correct 10 ms 14444 KB Output is correct
6 Correct 9 ms 14444 KB Output is correct
7 Correct 9 ms 14444 KB Output is correct
8 Correct 9 ms 14444 KB Output is correct
9 Correct 11 ms 14444 KB Output is correct
10 Correct 9 ms 14444 KB Output is correct
11 Correct 11 ms 14444 KB Output is correct
12 Correct 10 ms 14444 KB Output is correct
13 Correct 9 ms 14444 KB Output is correct
14 Correct 9 ms 14444 KB Output is correct
15 Correct 9 ms 14444 KB Output is correct
16 Correct 9 ms 14444 KB Output is correct
17 Correct 9 ms 14444 KB Output is correct
18 Correct 9 ms 14444 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 14444 KB Output is correct
2 Correct 9 ms 14444 KB Output is correct
3 Correct 11 ms 14592 KB Output is correct
4 Correct 9 ms 14444 KB Output is correct
5 Correct 10 ms 14444 KB Output is correct
6 Correct 9 ms 14444 KB Output is correct
7 Correct 9 ms 14444 KB Output is correct
8 Correct 9 ms 14444 KB Output is correct
9 Correct 11 ms 14444 KB Output is correct
10 Correct 9 ms 14444 KB Output is correct
11 Correct 11 ms 14444 KB Output is correct
12 Correct 10 ms 14444 KB Output is correct
13 Correct 9 ms 14444 KB Output is correct
14 Correct 9 ms 14444 KB Output is correct
15 Correct 9 ms 14444 KB Output is correct
16 Correct 9 ms 14444 KB Output is correct
17 Correct 9 ms 14444 KB Output is correct
18 Correct 9 ms 14444 KB Output is correct
19 Correct 9 ms 14444 KB Output is correct
20 Correct 10 ms 14444 KB Output is correct
21 Correct 10 ms 14572 KB Output is correct
22 Correct 11 ms 14572 KB Output is correct
23 Correct 11 ms 14572 KB Output is correct
24 Correct 10 ms 14572 KB Output is correct
25 Correct 10 ms 14572 KB Output is correct
26 Correct 10 ms 14572 KB Output is correct
27 Correct 10 ms 14444 KB Output is correct
28 Correct 10 ms 14572 KB Output is correct
29 Correct 10 ms 14572 KB Output is correct
30 Correct 10 ms 14572 KB Output is correct
31 Correct 11 ms 14572 KB Output is correct
32 Correct 11 ms 14592 KB Output is correct
33 Correct 11 ms 14572 KB Output is correct
34 Correct 10 ms 14572 KB Output is correct
35 Correct 10 ms 14572 KB Output is correct
36 Correct 10 ms 14572 KB Output is correct
37 Correct 10 ms 14592 KB Output is correct
38 Correct 10 ms 14572 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 14444 KB Output is correct
2 Correct 9 ms 14444 KB Output is correct
3 Correct 11 ms 14592 KB Output is correct
4 Correct 9 ms 14444 KB Output is correct
5 Correct 10 ms 14444 KB Output is correct
6 Correct 9 ms 14444 KB Output is correct
7 Correct 9 ms 14444 KB Output is correct
8 Correct 9 ms 14444 KB Output is correct
9 Correct 11 ms 14444 KB Output is correct
10 Correct 9 ms 14444 KB Output is correct
11 Correct 11 ms 14444 KB Output is correct
12 Correct 10 ms 14444 KB Output is correct
13 Correct 9 ms 14444 KB Output is correct
14 Correct 9 ms 14444 KB Output is correct
15 Correct 9 ms 14444 KB Output is correct
16 Correct 9 ms 14444 KB Output is correct
17 Correct 9 ms 14444 KB Output is correct
18 Correct 9 ms 14444 KB Output is correct
19 Correct 138 ms 21860 KB Output is correct
20 Correct 137 ms 21996 KB Output is correct
21 Correct 131 ms 21740 KB Output is correct
22 Correct 137 ms 21740 KB Output is correct
23 Correct 165 ms 22636 KB Output is correct
24 Correct 135 ms 21740 KB Output is correct
25 Correct 127 ms 43244 KB Output is correct
26 Correct 94 ms 44396 KB Output is correct
27 Correct 250 ms 32236 KB Output is correct
28 Correct 269 ms 73236 KB Output is correct
29 Correct 283 ms 65772 KB Output is correct
30 Correct 246 ms 32364 KB Output is correct
31 Correct 232 ms 32236 KB Output is correct
32 Correct 287 ms 32328 KB Output is correct
33 Correct 213 ms 28396 KB Output is correct
34 Correct 362 ms 42052 KB Output is correct

Subtask #4
57.0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 14444 KB Output is correct
2 Correct 9 ms 14444 KB Output is correct
3 Correct 11 ms 14592 KB Output is correct
4 Correct 9 ms 14444 KB Output is correct
5 Correct 10 ms 14444 KB Output is correct
6 Correct 9 ms 14444 KB Output is correct
7 Correct 9 ms 14444 KB Output is correct
8 Correct 9 ms 14444 KB Output is correct
9 Correct 11 ms 14444 KB Output is correct
10 Correct 9 ms 14444 KB Output is correct
11 Correct 11 ms 14444 KB Output is correct
12 Correct 10 ms 14444 KB Output is correct
13 Correct 9 ms 14444 KB Output is correct
14 Correct 9 ms 14444 KB Output is correct
15 Correct 9 ms 14444 KB Output is correct
16 Correct 9 ms 14444 KB Output is correct
17 Correct 9 ms 14444 KB Output is correct
18 Correct 9 ms 14444 KB Output is correct
19 Correct 9 ms 14444 KB Output is correct
20 Correct 10 ms 14444 KB Output is correct
21 Correct 10 ms 14572 KB Output is correct
22 Correct 11 ms 14572 KB Output is correct
23 Correct 11 ms 14572 KB Output is correct
24 Correct 10 ms 14572 KB Output is correct
25 Correct 10 ms 14572 KB Output is correct
26 Correct 10 ms 14572 KB Output is correct
27 Correct 10 ms 14444 KB Output is correct
28 Correct 10 ms 14572 KB Output is correct
29 Correct 10 ms 14572 KB Output is correct
30 Correct 10 ms 14572 KB Output is correct
31 Correct 11 ms 14572 KB Output is correct
32 Correct 11 ms 14592 KB Output is correct
33 Correct 11 ms 14572 KB Output is correct
34 Correct 10 ms 14572 KB Output is correct
35 Correct 10 ms 14572 KB Output is correct
36 Correct 10 ms 14572 KB Output is correct
37 Correct 10 ms 14592 KB Output is correct
38 Correct 10 ms 14572 KB Output is correct
39 Correct 138 ms 21860 KB Output is correct
40 Correct 137 ms 21996 KB Output is correct
41 Correct 131 ms 21740 KB Output is correct
42 Correct 137 ms 21740 KB Output is correct
43 Correct 165 ms 22636 KB Output is correct
44 Correct 135 ms 21740 KB Output is correct
45 Correct 127 ms 43244 KB Output is correct
46 Correct 94 ms 44396 KB Output is correct
47 Correct 250 ms 32236 KB Output is correct
48 Correct 269 ms 73236 KB Output is correct
49 Correct 283 ms 65772 KB Output is correct
50 Correct 246 ms 32364 KB Output is correct
51 Correct 232 ms 32236 KB Output is correct
52 Correct 287 ms 32328 KB Output is correct
53 Correct 213 ms 28396 KB Output is correct
54 Correct 362 ms 42052 KB Output is correct
55 Correct 22 ms 15872 KB Output is correct
56 Correct 17 ms 15212 KB Output is correct
57 Correct 75 ms 21740 KB Output is correct
58 Correct 58 ms 21344 KB Output is correct
59 Correct 95 ms 44396 KB Output is correct
60 Correct 273 ms 63980 KB Output is correct
61 Correct 272 ms 36460 KB Output is correct
62 Correct 240 ms 32492 KB Output is correct
63 Correct 268 ms 32364 KB Output is correct
64 Correct 452 ms 42348 KB Output is correct
65 Correct 437 ms 42604 KB Output is correct
66 Correct 262 ms 71308 KB Output is correct
67 Correct 184 ms 29660 KB Output is correct
68 Correct 371 ms 41964 KB Output is correct
69 Correct 387 ms 46956 KB Output is correct
70 Correct 332 ms 40812 KB Output is correct