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Submission #66574

# Submission time Handle Problem Language Result Execution time Memory
66574 2018-08-11T13:40:12 Z Vahan Dreaming (IOI13_dreaming) C++17
18 / 100
 65 ms 14328 KB 
#include "dreaming.h"
#include<vector>
#include<iostream>
#include<algorithm>
using namespace std;
vector<pair<int,int > > g[200000];
int u[200000],x[200000],d[200000],pa[200000],mh,ind,t,pat;
void dfs(int v,int p)
{
    u[v]=1;
    for(int i=0;i<g[v].size();i++)
    {
        int to =g[v][i].first;
        int her=g[v][i].second;
        if(to==p)
            continue;
        d[to]=d[v]+ her;
        pa[to]=v;
        if(d[to]>mh)
        {
            mh=d[to];
            ind=to;
        }
        dfs(to,v);
    }
}
int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
    for(int i=0;i<M;i++)
    {
        g[A[i]].push_back(make_pair(B[i],T[i]));
        g[B[i]].push_back(make_pair(A[i],T[i]));
    }
    for(int i=0;i<N;i++)
    {
        if(u[i]==0)
        {
            d[i]=0;
            mh=0;
            ind=i;
            dfs(i,-1);
            int a=ind;
            d[a]=0;
            mh=0;
            ind=a;
            dfs(a,-1);
            int b=ind;
            int e=b;
            int l=mh;
            while(e!=a)
            {
                l=min(l,max(mh-d[e],d[e]));
                e=pa[e];
            }
            x[t]=l;
            t++;
        }
    }
    sort(x,x+t);
    pat=max(pat,x[t-1]);
    if(t>=2)
        pat=max(pat,x[t-1]+x[t-2]+L);
    if(t>=3)
        pat=max(pat,x[t-2]+x[t-3]+2*L);
    return pat;
}

Compilation message

dreaming.cpp: In function 'void dfs(int, int)':
dreaming.cpp:11:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<g[v].size();i++)
                 ~^~~~~~~~~~~~

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 14328 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 14328 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 14328 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 8696 KB Output is correct
2 Correct 31 ms 8704 KB Output is correct
3 Correct 31 ms 8668 KB Output is correct
4 Correct 34 ms 8696 KB Output is correct
5 Correct 33 ms 8696 KB Output is correct
6 Correct 32 ms 8960 KB Output is correct
7 Correct 35 ms 8952 KB Output is correct
8 Correct 33 ms 8676 KB Output is correct
9 Correct 35 ms 8568 KB Output is correct
10 Correct 33 ms 8832 KB Output is correct
11 Correct 6 ms 5120 KB Output is correct
12 Correct 9 ms 6656 KB Output is correct
13 Correct 10 ms 6656 KB Output is correct
14 Correct 9 ms 6656 KB Output is correct
15 Correct 10 ms 6656 KB Output is correct
16 Correct 9 ms 6656 KB Output is correct
17 Correct 10 ms 6400 KB Output is correct
18 Correct 10 ms 6656 KB Output is correct
19 Correct 9 ms 6656 KB Output is correct
20 Correct 6 ms 5120 KB Output is correct
21 Correct 6 ms 5120 KB Output is correct
22 Correct 6 ms 5120 KB Output is correct
23 Correct 10 ms 6656 KB Output is correct

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 14328 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 14328 KB Output isn't correct
2 Halted 0 ms 0 KB -