oj.uz

Submission #56456

# Submission time Handle Problem Language Result Execution time Memory
56456 2018-07-11T11:47:03 Z Bodo171 Race (IOI11_race) C++14
100 / 100
 1507 ms 207056 KB 
#include "race.h"
#include <vector>
#include <map>
#include <iostream>
using namespace std;
const int nmax=200005;
map<long long,int> m[nmax];
vector< pair<int,int> > v[nmax];
long long k;
long long L[nmax];
int rr[nmax],l[nmax],r[nmax],lev[nmax],w[nmax],p[nmax];
int mn,nr,paths,n,i;
void ver(int path,long long A,long long LCA,int lca,int x)
{
    //A+X-2*LCA=K
    //X=K-A+2*LCA
    if(m[path][k-A+2*LCA]&&m[path][k-A+2*LCA]+x-2*lca<mn)
        mn=m[path][k-A+2*LCA]+x-2*lca;
}
void baga(int path,long long A,int x)
{
    if((!m[path][A])||m[path][A]>x)
        m[path][A]=x;
}
void dfs(int x)
{
    int son=n+1,nod=0;
    rr[++nr]=x;l[x]=nr;w[x]=1;
    for(int i=0;i<v[x].size();i++)
        if(!w[v[x][i].first])
    {
        nod=v[x][i].first;
        lev[nod]=lev[x]+1;L[nod]=1LL*L[x]+v[x][i].second;
        dfs(nod);
        w[x]+=w[nod];
        if(w[nod]>w[son]) son=nod;
    }
    r[x]=nr;
    p[x]=p[son];
    if(son==n+1) p[x]=++paths;
    for(int i=0;i<v[x].size();i++)
        if(w[v[x][i].first]<=w[x]&&son!=v[x][i].first)
    {
        nod=v[x][i].first;
        for(int j=l[nod];j<=r[nod];j++)
        {
            ver(p[x],L[rr[j]],L[x],lev[x],lev[rr[j]]);
        }
        for(int j=l[nod];j<=r[nod];j++)
        {
            baga(p[x],L[rr[j]],lev[rr[j]]);
        }
    }
    ver(p[x],L[x],L[x],lev[x],lev[x]);
    baga(p[x],L[x],lev[x]);
}
int best_path(int N, int K, int H[][2], int L[])
{
  n=N,k=K;
  for(i=0;i<n-1;i++)
  {
      v[H[i][0]].push_back({H[i][1],L[i]});
      v[H[i][1]].push_back({H[i][0],L[i]});
  }
  lev[0]=1;mn=n+1;
  dfs(0);
  if(mn==n+1) mn=-1;
  return mn;
}

Compilation message

race.cpp: In function 'void dfs(int)':
race.cpp:29:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[x].size();i++)
                 ~^~~~~~~~~~~~
race.cpp:41:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<v[x].size();i++)
                 ~^~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 14456 KB Output is correct
2 Correct 15 ms 14632 KB Output is correct
3 Correct 17 ms 14632 KB Output is correct
4 Correct 16 ms 14632 KB Output is correct
5 Correct 16 ms 14632 KB Output is correct
6 Correct 14 ms 14632 KB Output is correct
7 Correct 14 ms 14632 KB Output is correct
8 Correct 19 ms 14704 KB Output is correct
9 Correct 19 ms 14704 KB Output is correct
10 Correct 14 ms 14724 KB Output is correct
11 Correct 15 ms 14788 KB Output is correct
12 Correct 17 ms 14788 KB Output is correct
13 Correct 19 ms 14788 KB Output is correct
14 Correct 14 ms 14788 KB Output is correct
15 Correct 15 ms 14788 KB Output is correct
16 Correct 15 ms 14788 KB Output is correct
17 Correct 15 ms 14788 KB Output is correct
18 Correct 16 ms 14788 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 14456 KB Output is correct
2 Correct 15 ms 14632 KB Output is correct
3 Correct 17 ms 14632 KB Output is correct
4 Correct 16 ms 14632 KB Output is correct
5 Correct 16 ms 14632 KB Output is correct
6 Correct 14 ms 14632 KB Output is correct
7 Correct 14 ms 14632 KB Output is correct
8 Correct 19 ms 14704 KB Output is correct
9 Correct 19 ms 14704 KB Output is correct
10 Correct 14 ms 14724 KB Output is correct
11 Correct 15 ms 14788 KB Output is correct
12 Correct 17 ms 14788 KB Output is correct
13 Correct 19 ms 14788 KB Output is correct
14 Correct 14 ms 14788 KB Output is correct
15 Correct 15 ms 14788 KB Output is correct
16 Correct 15 ms 14788 KB Output is correct
17 Correct 15 ms 14788 KB Output is correct
18 Correct 16 ms 14788 KB Output is correct
19 Correct 17 ms 14788 KB Output is correct
20 Correct 18 ms 14788 KB Output is correct
21 Correct 18 ms 15100 KB Output is correct
22 Correct 16 ms 15228 KB Output is correct
23 Correct 22 ms 15228 KB Output is correct
24 Correct 20 ms 15356 KB Output is correct
25 Correct 19 ms 15356 KB Output is correct
26 Correct 21 ms 15388 KB Output is correct
27 Correct 16 ms 15388 KB Output is correct
28 Correct 18 ms 15644 KB Output is correct
29 Correct 20 ms 15644 KB Output is correct
30 Correct 18 ms 15644 KB Output is correct
31 Correct 20 ms 15644 KB Output is correct
32 Correct 21 ms 15644 KB Output is correct
33 Correct 21 ms 15644 KB Output is correct
34 Correct 16 ms 15644 KB Output is correct
35 Correct 17 ms 15644 KB Output is correct
36 Correct 16 ms 15644 KB Output is correct
37 Correct 20 ms 15644 KB Output is correct
38 Correct 17 ms 15644 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 14456 KB Output is correct
2 Correct 15 ms 14632 KB Output is correct
3 Correct 17 ms 14632 KB Output is correct
4 Correct 16 ms 14632 KB Output is correct
5 Correct 16 ms 14632 KB Output is correct
6 Correct 14 ms 14632 KB Output is correct
7 Correct 14 ms 14632 KB Output is correct
8 Correct 19 ms 14704 KB Output is correct
9 Correct 19 ms 14704 KB Output is correct
10 Correct 14 ms 14724 KB Output is correct
11 Correct 15 ms 14788 KB Output is correct
12 Correct 17 ms 14788 KB Output is correct
13 Correct 19 ms 14788 KB Output is correct
14 Correct 14 ms 14788 KB Output is correct
15 Correct 15 ms 14788 KB Output is correct
16 Correct 15 ms 14788 KB Output is correct
17 Correct 15 ms 14788 KB Output is correct
18 Correct 16 ms 14788 KB Output is correct
19 Correct 313 ms 45436 KB Output is correct
20 Correct 290 ms 45436 KB Output is correct
21 Correct 291 ms 45704 KB Output is correct
22 Correct 261 ms 45704 KB Output is correct
23 Correct 398 ms 72968 KB Output is correct
24 Correct 300 ms 72968 KB Output is correct
25 Correct 149 ms 72968 KB Output is correct
26 Correct 84 ms 72968 KB Output is correct
27 Correct 434 ms 72968 KB Output is correct
28 Correct 366 ms 78236 KB Output is correct
29 Correct 408 ms 81964 KB Output is correct
30 Correct 369 ms 81964 KB Output is correct
31 Correct 385 ms 81964 KB Output is correct
32 Correct 549 ms 81964 KB Output is correct
33 Correct 501 ms 81964 KB Output is correct
34 Correct 974 ms 145124 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 14456 KB Output is correct
2 Correct 15 ms 14632 KB Output is correct
3 Correct 17 ms 14632 KB Output is correct
4 Correct 16 ms 14632 KB Output is correct
5 Correct 16 ms 14632 KB Output is correct
6 Correct 14 ms 14632 KB Output is correct
7 Correct 14 ms 14632 KB Output is correct
8 Correct 19 ms 14704 KB Output is correct
9 Correct 19 ms 14704 KB Output is correct
10 Correct 14 ms 14724 KB Output is correct
11 Correct 15 ms 14788 KB Output is correct
12 Correct 17 ms 14788 KB Output is correct
13 Correct 19 ms 14788 KB Output is correct
14 Correct 14 ms 14788 KB Output is correct
15 Correct 15 ms 14788 KB Output is correct
16 Correct 15 ms 14788 KB Output is correct
17 Correct 15 ms 14788 KB Output is correct
18 Correct 16 ms 14788 KB Output is correct
19 Correct 17 ms 14788 KB Output is correct
20 Correct 18 ms 14788 KB Output is correct
21 Correct 18 ms 15100 KB Output is correct
22 Correct 16 ms 15228 KB Output is correct
23 Correct 22 ms 15228 KB Output is correct
24 Correct 20 ms 15356 KB Output is correct
25 Correct 19 ms 15356 KB Output is correct
26 Correct 21 ms 15388 KB Output is correct
27 Correct 16 ms 15388 KB Output is correct
28 Correct 18 ms 15644 KB Output is correct
29 Correct 20 ms 15644 KB Output is correct
30 Correct 18 ms 15644 KB Output is correct
31 Correct 20 ms 15644 KB Output is correct
32 Correct 21 ms 15644 KB Output is correct
33 Correct 21 ms 15644 KB Output is correct
34 Correct 16 ms 15644 KB Output is correct
35 Correct 17 ms 15644 KB Output is correct
36 Correct 16 ms 15644 KB Output is correct
37 Correct 20 ms 15644 KB Output is correct
38 Correct 17 ms 15644 KB Output is correct
39 Correct 313 ms 45436 KB Output is correct
40 Correct 290 ms 45436 KB Output is correct
41 Correct 291 ms 45704 KB Output is correct
42 Correct 261 ms 45704 KB Output is correct
43 Correct 398 ms 72968 KB Output is correct
44 Correct 300 ms 72968 KB Output is correct
45 Correct 149 ms 72968 KB Output is correct
46 Correct 84 ms 72968 KB Output is correct
47 Correct 434 ms 72968 KB Output is correct
48 Correct 366 ms 78236 KB Output is correct
49 Correct 408 ms 81964 KB Output is correct
50 Correct 369 ms 81964 KB Output is correct
51 Correct 385 ms 81964 KB Output is correct
52 Correct 549 ms 81964 KB Output is correct
53 Correct 501 ms 81964 KB Output is correct
54 Correct 974 ms 145124 KB Output is correct
55 Correct 43 ms 145124 KB Output is correct
56 Correct 31 ms 145124 KB Output is correct
57 Correct 227 ms 145124 KB Output is correct
58 Correct 97 ms 145124 KB Output is correct
59 Correct 239 ms 145124 KB Output is correct
60 Correct 495 ms 145124 KB Output is correct
61 Correct 524 ms 145124 KB Output is correct
62 Correct 374 ms 145124 KB Output is correct
63 Correct 459 ms 145124 KB Output is correct
64 Correct 1436 ms 204796 KB Output is correct
65 Correct 1507 ms 207056 KB Output is correct
66 Correct 585 ms 207056 KB Output is correct
67 Correct 431 ms 207056 KB Output is correct
68 Correct 913 ms 207056 KB Output is correct
69 Correct 934 ms 207056 KB Output is correct
70 Correct 792 ms 207056 KB Output is correct