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답안 #316736

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
316736 2020-10-27T17:04:58 Z neki 꿈 (IOI13_dreaming) C++14
18 / 100
 99 ms 21624 KB 
#include <bits/stdc++.h>
#include"dreaming.h"
#define loop(i, a, b) for(long long i=a;i<b;i++)
#define pool(i, a, b) for(long long i=a-1;i>=b;i--)
#define fore(i, a) for(auto&& i:a)
#define fi first
#define se second
#define ps(a) push_back(a)
#define pb(a) pop_back(a)
#define sc scanf
#define vc vector
#define pa pair<ll, ll>
#define ll long long
#define lb lower_bound
#define ub upper_bound
#define all(a) a.begin(), a.end()
#define llmax LLONG_MAX/2
#define llmin -LLONG_MAX/2
using namespace std;
#define mn 200100
#define pa pair<ll, ll>
#define ld long double 
#define k 450

vc<pa> edg[mn];
vc<ll> ne;
ll v1[mn], v2[mn], dp[mn], ans=0;
void dfs1(ll u){
    v1[u]=1;
    fore(v, edg[u]) if(!v1[v.fi])dfs1(v.fi), dp[u]=max(dp[u], dp[v.fi]+v.se);
}
ll dfs2(ll u, ll cur){
    v2[u]=1;
    ans=max(ans, dp[u]);
    if(cur==-1){
        if(edg[u].size()==0) return 0;
        if(edg[u].size()==1) return min(dp[u], dfs2(edg[u][0].fi, edg[u][0].se));
    }
    ll ret=max(cur, dp[u]);
    vc<ll> srt;if(cur!=-1) srt.ps(cur);
    fore(v, edg[u]) if(!v2[v.fi]) srt.ps(dp[v.fi]+v.se);
    sort(all(srt));ll siz=srt.size(); if(siz>1) ans=max(ans, srt[siz-2]+srt[siz-1]);
    fore(v, edg[u]) if(!v2[v.fi]){
        if(dp[v.fi]+v.se==srt[siz-1]) ret=min(ret, dfs2(v.fi, srt[siz-2]+v.se));
        else ret=min(ret, dfs2(v.fi, srt[siz-1]+v.se));
    }
    return ret;
}
int travelTime(int n,int m,int L, int a[],int b[],int t[]){
    loop(i, 0, m) edg[a[i]].ps(make_pair(b[i], t[i]));
    loop(i, 0, m) edg[b[i]].ps(make_pair(a[i], t[i]));
    
    loop(i, 0, n){
        if(!v1[i])dfs1(i);
        if(!v2[i]) ne.ps((dfs2(i, -1)));
    }
    sort(all(ne));ll siz=ne.size();
    if(ne.size()==1) return max(ne[0], ans);
    if(ne.size()==2) return max(ne[1]+ne[2]+L, ans);
    return max(ans, max(ne[siz-1]+ne[siz-2]+L, ne[siz-3]+ne[siz-2]+2 * L));
}

Subtask #1
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 99 ms 21624 KB Output is correct
2 Correct 83 ms 21112 KB Output is correct
3 Correct 55 ms 18936 KB Output is correct
4 Correct 13 ms 7408 KB Output is correct
5 Correct 11 ms 6400 KB Output is correct
6 Correct 20 ms 8832 KB Output is correct
7 Incorrect 5 ms 5248 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 99 ms 21624 KB Output is correct
2 Correct 83 ms 21112 KB Output is correct
3 Correct 55 ms 18936 KB Output is correct
4 Correct 13 ms 7408 KB Output is correct
5 Correct 11 ms 6400 KB Output is correct
6 Correct 20 ms 8832 KB Output is correct
7 Incorrect 5 ms 5248 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 99 ms 21624 KB Output is correct
2 Correct 83 ms 21112 KB Output is correct
3 Correct 55 ms 18936 KB Output is correct
4 Correct 13 ms 7408 KB Output is correct
5 Correct 11 ms 6400 KB Output is correct
6 Correct 20 ms 8832 KB Output is correct
7 Incorrect 5 ms 5248 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 34 ms 10612 KB Output is correct
2 Correct 32 ms 10656 KB Output is correct
3 Correct 34 ms 10612 KB Output is correct
4 Correct 44 ms 10612 KB Output is correct
5 Correct 32 ms 10612 KB Output is correct
6 Correct 35 ms 11516 KB Output is correct
7 Correct 33 ms 10868 KB Output is correct
8 Correct 32 ms 10492 KB Output is correct
9 Correct 31 ms 10488 KB Output is correct
10 Correct 33 ms 10736 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 8 ms 8184 KB Output is correct
13 Correct 9 ms 8312 KB Output is correct
14 Correct 9 ms 8056 KB Output is correct
15 Correct 9 ms 8184 KB Output is correct
16 Correct 8 ms 8056 KB Output is correct
17 Correct 8 ms 7668 KB Output is correct
18 Correct 9 ms 8312 KB Output is correct
19 Correct 8 ms 8056 KB Output is correct
20 Correct 3 ms 4992 KB Output is correct
21 Correct 3 ms 4992 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct
23 Correct 9 ms 8056 KB Output is correct

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 99 ms 21624 KB Output is correct
2 Correct 83 ms 21112 KB Output is correct
3 Correct 55 ms 18936 KB Output is correct
4 Correct 13 ms 7408 KB Output is correct
5 Correct 11 ms 6400 KB Output is correct
6 Correct 20 ms 8832 KB Output is correct
7 Incorrect 5 ms 5248 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 99 ms 21624 KB Output is correct
2 Correct 83 ms 21112 KB Output is correct
3 Correct 55 ms 18936 KB Output is correct
4 Correct 13 ms 7408 KB Output is correct
5 Correct 11 ms 6400 KB Output is correct
6 Correct 20 ms 8832 KB Output is correct
7 Incorrect 5 ms 5248 KB Output isn't correct
8 Halted 0 ms 0 KB -