oj.uz

답안 #228425

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
228425 2020-05-01T02:22:26 Z mohamedsobhi777 꿈 (IOI13_dreaming) C++14
47 / 100
 161 ms 32888 KB 
#include<bits/stdc++.h>
#include "dreaming.h"

using namespace std ; 

const int N = 1e5 + 7 ; 

int mn ; 
int vis[N] ; 
int mxx[N] ; 
int anss[N] ;  

vector<pair<int , int > > adj[N]; 
int node , dst ; 
int ansi , ans2;

int solve1(int x, int p){
    int ret = 0 ; 
    for(auto u : adj[x]){
        if(u.first==p)continue ; 
        int dfx = solve1(u.first , x) + u.second ; 
        ret = max(ret , dfx) ;
    }
    anss[x] = ret ; 
    return mxx[x] = ret ; 
}

void dfs(int x , int p , int h){
    for(auto u : adj[x]){
        if(u.first==p)continue ; 
        dfs(u.first , x , h + u.second) ; 
    }
    if( h > dst){
        node = x ; 
        dst = h ; 
    }
    ans2 = max(ans2 , h) ;
}

int dfs1(int x, int p , int dp = 0 ){
    vis[x] ++ ; 
    anss[x] = max(anss[x] , dp ) ;
    ansi = min(ansi , anss[x]) ; 
    vector<int> dps , pre , suf; 
    for(auto u : adj[x]){
        if(u.first == p)continue ; 
        dps.push_back(mxx[u.first] + u.second) ;
        int mx = pre.size() ? pre.back() : 0 ; 
        pre.push_back(max(mx , dps.back())) ; 
    }  
    suf.resize(pre.size()) ;
    if(suf.size())
    suf[suf.size()-1] = dps[suf.size()-1] ; 
    for(int i = suf.size() -2 ; i >=0 ;i --){
        suf[i] = max(dps[i] , suf[i+1]) ; 
    }
    int i = 0 ; 
    for(auto u : adj[x]){
        if(u.first==p)continue ;
        int subdp = 0 ;
        if(i) subdp = max(subdp , pre[i-1]) ; 
        if(i < suf.size() -1 ) subdp = max(subdp , suf[i+1]) ; 
        dfs1(u.first , x , max(dp , subdp) + u.second) ; 
        i++; 
    } 
}

int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
    for(int i  =0 ; i< M ;i++){
        adj[A[i] +1 ].push_back({B[i]+1 , T[i]}) ;
        adj[B[i]+1].push_back({A[i]+1 , T[i]}) ;
    }
    vector<int> v; 
    for(int i = 1; i <=N ; i++){
        if(vis[i])continue ; 
        ansi = 2e9 ; 
        dfs(i , i , 0) ; dst = 0 ; 
        dfs(node , node , 0) ; 
        solve1(i , i ) ; 
        dfs1(i , i) ;
        v.push_back(ansi) ; 
    }
    if(v.size() == 1)return ans2 ; 
    else if(v.size() ==2 )return max(v[0] + v[1]  + L , ans2) ; 

    int s = v.size() ; 
    int ans = 2e9 ; 
    sort(v.begin() , v.end()) ; 
    for(int i = 0 ; i < s ; i++){
        int cur = v[i] + v.back() ; 
        if( i < s -1){
            if( i == s-2){
                cur = max(cur , v.back() + v[s-3] + L) ; 
            }
            else cur = max(cur , v.back() + v[s-2] + L) ; 
        }
        ans = min(ans , cur) ; 
    }
    return max(ans + L  , ans2) ; 
}

Compilation message

dreaming.cpp: In function 'int dfs1(int, int, int)':
dreaming.cpp:62:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         if(i < suf.size() -1 ) subdp = max(subdp , suf[i+1]) ; 
            ~~^~~~~~~~~~~~~~~
dreaming.cpp:66:1: warning: no return statement in function returning non-void [-Wreturn-type]
 }
 ^

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 89 ms 20344 KB Output is correct
2 Correct 99 ms 19320 KB Output is correct
3 Correct 63 ms 18808 KB Output is correct
4 Correct 16 ms 5248 KB Output is correct
5 Correct 14 ms 3968 KB Output is correct
6 Correct 24 ms 6528 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct
8 Correct 40 ms 9728 KB Output is correct
9 Correct 58 ms 15224 KB Output is correct
10 Correct 6 ms 2816 KB Output is correct
11 Correct 105 ms 14968 KB Output is correct
12 Correct 124 ms 17532 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 89 ms 20344 KB Output is correct
2 Correct 99 ms 19320 KB Output is correct
3 Correct 63 ms 18808 KB Output is correct
4 Correct 16 ms 5248 KB Output is correct
5 Correct 14 ms 3968 KB Output is correct
6 Correct 24 ms 6528 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct
8 Correct 40 ms 9728 KB Output is correct
9 Correct 58 ms 15224 KB Output is correct
10 Correct 6 ms 2816 KB Output is correct
11 Correct 105 ms 14968 KB Output is correct
12 Correct 124 ms 17532 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct
14 Correct 6 ms 2688 KB Output is correct
15 Correct 6 ms 2688 KB Output is correct
16 Correct 6 ms 2688 KB Output is correct
17 Correct 6 ms 2688 KB Output is correct
18 Correct 6 ms 2688 KB Output is correct
19 Correct 6 ms 2688 KB Output is correct
20 Correct 6 ms 2688 KB Output is correct
21 Correct 7 ms 2688 KB Output is correct
22 Correct 6 ms 2688 KB Output is correct
23 Correct 6 ms 2688 KB Output is correct
24 Correct 6 ms 2688 KB Output is correct
25 Correct 6 ms 2560 KB Output is correct
26 Correct 6 ms 2688 KB Output is correct
27 Correct 6 ms 2688 KB Output is correct
28 Correct 6 ms 2688 KB Output is correct
29 Correct 6 ms 2688 KB Output is correct
30 Correct 6 ms 2688 KB Output is correct
31 Correct 6 ms 2688 KB Output is correct
32 Correct 6 ms 2688 KB Output is correct
33 Correct 6 ms 2688 KB Output is correct
34 Correct 7 ms 2688 KB Output is correct
35 Correct 6 ms 2688 KB Output is correct
36 Correct 6 ms 2688 KB Output is correct
37 Correct 6 ms 2688 KB Output is correct
38 Correct 6 ms 2688 KB Output is correct

Subtask #3
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 89 ms 20344 KB Output is correct
2 Correct 99 ms 19320 KB Output is correct
3 Correct 63 ms 18808 KB Output is correct
4 Correct 16 ms 5248 KB Output is correct
5 Correct 14 ms 3968 KB Output is correct
6 Correct 24 ms 6528 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct
8 Correct 40 ms 9728 KB Output is correct
9 Correct 58 ms 15224 KB Output is correct
10 Correct 6 ms 2816 KB Output is correct
11 Correct 105 ms 14968 KB Output is correct
12 Correct 124 ms 17532 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct
14 Correct 6 ms 2688 KB Output is correct
15 Correct 6 ms 2688 KB Output is correct
16 Correct 6 ms 2688 KB Output is correct
17 Correct 6 ms 2688 KB Output is correct
18 Correct 6 ms 2688 KB Output is correct
19 Correct 6 ms 2688 KB Output is correct
20 Correct 6 ms 2688 KB Output is correct
21 Correct 7 ms 2688 KB Output is correct
22 Correct 6 ms 2688 KB Output is correct
23 Correct 6 ms 2688 KB Output is correct
24 Correct 6 ms 2688 KB Output is correct
25 Correct 6 ms 2560 KB Output is correct
26 Correct 6 ms 2688 KB Output is correct
27 Correct 6 ms 2688 KB Output is correct
28 Correct 6 ms 2688 KB Output is correct
29 Correct 6 ms 2688 KB Output is correct
30 Correct 6 ms 2688 KB Output is correct
31 Correct 6 ms 2688 KB Output is correct
32 Correct 6 ms 2688 KB Output is correct
33 Correct 6 ms 2688 KB Output is correct
34 Correct 7 ms 2688 KB Output is correct
35 Correct 6 ms 2688 KB Output is correct
36 Correct 6 ms 2688 KB Output is correct
37 Correct 6 ms 2688 KB Output is correct
38 Correct 6 ms 2688 KB Output is correct
39 Correct 94 ms 20344 KB Output is correct
40 Correct 94 ms 19320 KB Output is correct
41 Correct 67 ms 18808 KB Output is correct
42 Correct 16 ms 5248 KB Output is correct
43 Correct 7 ms 2688 KB Output is correct
44 Correct 6 ms 2688 KB Output is correct
45 Correct 6 ms 2688 KB Output is correct
46 Correct 6 ms 2688 KB Output is correct
47 Correct 6 ms 2688 KB Output is correct
48 Correct 6 ms 2688 KB Output is correct
49 Correct 6 ms 2688 KB Output is correct
50 Correct 6 ms 2688 KB Output is correct
51 Correct 6 ms 2688 KB Output is correct
52 Correct 6 ms 2688 KB Output is correct
53 Correct 6 ms 2688 KB Output is correct
54 Correct 6 ms 2688 KB Output is correct
55 Correct 6 ms 2688 KB Output is correct
56 Correct 6 ms 2688 KB Output is correct
57 Correct 106 ms 8952 KB Output is correct
58 Correct 111 ms 8952 KB Output is correct
59 Correct 110 ms 9080 KB Output is correct
60 Correct 121 ms 8980 KB Output is correct
61 Correct 103 ms 8824 KB Output is correct
62 Correct 117 ms 8824 KB Output is correct
63 Correct 105 ms 8828 KB Output is correct
64 Correct 120 ms 8696 KB Output is correct
65 Correct 100 ms 8700 KB Output is correct
66 Correct 102 ms 8696 KB Output is correct
67 Correct 118 ms 9208 KB Output is correct
68 Correct 140 ms 9080 KB Output is correct
69 Correct 118 ms 9080 KB Output is correct
70 Correct 112 ms 8952 KB Output is correct
71 Correct 6 ms 2688 KB Output is correct
72 Correct 9 ms 2944 KB Output is correct
73 Correct 8 ms 2944 KB Output is correct
74 Correct 8 ms 2944 KB Output is correct
75 Correct 8 ms 2944 KB Output is correct
76 Correct 8 ms 2944 KB Output is correct
77 Correct 8 ms 2944 KB Output is correct
78 Correct 8 ms 2944 KB Output is correct
79 Correct 8 ms 2944 KB Output is correct
80 Correct 132 ms 8956 KB Output is correct
81 Correct 132 ms 9100 KB Output is correct
82 Correct 104 ms 8824 KB Output is correct
83 Correct 108 ms 8824 KB Output is correct
84 Correct 7 ms 2816 KB Output is correct
85 Correct 7 ms 2816 KB Output is correct
86 Correct 7 ms 2944 KB Output is correct
87 Correct 7 ms 2816 KB Output is correct
88 Correct 7 ms 2816 KB Output is correct
89 Correct 7 ms 2816 KB Output is correct
90 Correct 7 ms 2816 KB Output is correct
91 Correct 8 ms 2944 KB Output is correct
92 Correct 8 ms 2944 KB Output is correct
93 Correct 8 ms 2944 KB Output is correct
94 Correct 6 ms 2688 KB Output is correct
95 Correct 6 ms 2688 KB Output is correct
96 Correct 6 ms 2688 KB Output is correct
97 Correct 6 ms 2688 KB Output is correct
98 Correct 6 ms 2688 KB Output is correct
99 Correct 6 ms 2688 KB Output is correct
100 Correct 6 ms 2688 KB Output is correct
101 Correct 6 ms 2688 KB Output is correct
102 Correct 6 ms 2688 KB Output is correct
103 Correct 7 ms 2816 KB Output is correct
104 Correct 14 ms 3968 KB Output is correct
105 Correct 26 ms 6528 KB Output is correct
106 Correct 6 ms 2816 KB Output is correct
107 Correct 66 ms 9720 KB Output is correct
108 Correct 55 ms 15224 KB Output is correct
109 Correct 6 ms 2816 KB Output is correct
110 Correct 92 ms 14840 KB Output is correct
111 Correct 101 ms 17528 KB Output is correct
112 Correct 7 ms 2816 KB Output is correct
113 Correct 161 ms 32888 KB Output is correct

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 37 ms 6520 KB Output is correct
2 Incorrect 33 ms 6528 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 89 ms 20344 KB Output is correct
2 Correct 99 ms 19320 KB Output is correct
3 Correct 63 ms 18808 KB Output is correct
4 Correct 16 ms 5248 KB Output is correct
5 Correct 14 ms 3968 KB Output is correct
6 Correct 24 ms 6528 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct
8 Correct 40 ms 9728 KB Output is correct
9 Correct 58 ms 15224 KB Output is correct
10 Correct 6 ms 2816 KB Output is correct
11 Correct 105 ms 14968 KB Output is correct
12 Correct 124 ms 17532 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct
14 Correct 6 ms 2688 KB Output is correct
15 Correct 7 ms 2816 KB Output is correct
16 Correct 8 ms 2944 KB Output is correct
17 Correct 6 ms 2688 KB Output is correct
18 Correct 7 ms 2816 KB Output is correct
19 Correct 8 ms 2944 KB Output is correct
20 Incorrect 6 ms 2688 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 89 ms 20344 KB Output is correct
2 Correct 99 ms 19320 KB Output is correct
3 Correct 63 ms 18808 KB Output is correct
4 Correct 16 ms 5248 KB Output is correct
5 Correct 14 ms 3968 KB Output is correct
6 Correct 24 ms 6528 KB Output is correct
7 Correct 6 ms 2688 KB Output is correct
8 Correct 40 ms 9728 KB Output is correct
9 Correct 58 ms 15224 KB Output is correct
10 Correct 6 ms 2816 KB Output is correct
11 Correct 105 ms 14968 KB Output is correct
12 Correct 124 ms 17532 KB Output is correct
13 Correct 7 ms 2816 KB Output is correct
14 Correct 6 ms 2688 KB Output is correct
15 Correct 6 ms 2688 KB Output is correct
16 Correct 6 ms 2688 KB Output is correct
17 Correct 6 ms 2688 KB Output is correct
18 Correct 6 ms 2688 KB Output is correct
19 Correct 6 ms 2688 KB Output is correct
20 Correct 6 ms 2688 KB Output is correct
21 Correct 7 ms 2688 KB Output is correct
22 Correct 6 ms 2688 KB Output is correct
23 Correct 6 ms 2688 KB Output is correct
24 Correct 6 ms 2688 KB Output is correct
25 Correct 6 ms 2560 KB Output is correct
26 Correct 6 ms 2688 KB Output is correct
27 Correct 6 ms 2688 KB Output is correct
28 Correct 6 ms 2688 KB Output is correct
29 Correct 6 ms 2688 KB Output is correct
30 Correct 6 ms 2688 KB Output is correct
31 Correct 6 ms 2688 KB Output is correct
32 Correct 6 ms 2688 KB Output is correct
33 Correct 6 ms 2688 KB Output is correct
34 Correct 7 ms 2688 KB Output is correct
35 Correct 6 ms 2688 KB Output is correct
36 Correct 6 ms 2688 KB Output is correct
37 Correct 6 ms 2688 KB Output is correct
38 Correct 6 ms 2688 KB Output is correct
39 Correct 94 ms 20344 KB Output is correct
40 Correct 94 ms 19320 KB Output is correct
41 Correct 67 ms 18808 KB Output is correct
42 Correct 16 ms 5248 KB Output is correct
43 Correct 7 ms 2688 KB Output is correct
44 Correct 6 ms 2688 KB Output is correct
45 Correct 6 ms 2688 KB Output is correct
46 Correct 6 ms 2688 KB Output is correct
47 Correct 6 ms 2688 KB Output is correct
48 Correct 6 ms 2688 KB Output is correct
49 Correct 6 ms 2688 KB Output is correct
50 Correct 6 ms 2688 KB Output is correct
51 Correct 6 ms 2688 KB Output is correct
52 Correct 6 ms 2688 KB Output is correct
53 Correct 6 ms 2688 KB Output is correct
54 Correct 6 ms 2688 KB Output is correct
55 Correct 6 ms 2688 KB Output is correct
56 Correct 6 ms 2688 KB Output is correct
57 Correct 106 ms 8952 KB Output is correct
58 Correct 111 ms 8952 KB Output is correct
59 Correct 110 ms 9080 KB Output is correct
60 Correct 121 ms 8980 KB Output is correct
61 Correct 103 ms 8824 KB Output is correct
62 Correct 117 ms 8824 KB Output is correct
63 Correct 105 ms 8828 KB Output is correct
64 Correct 120 ms 8696 KB Output is correct
65 Correct 100 ms 8700 KB Output is correct
66 Correct 102 ms 8696 KB Output is correct
67 Correct 118 ms 9208 KB Output is correct
68 Correct 140 ms 9080 KB Output is correct
69 Correct 118 ms 9080 KB Output is correct
70 Correct 112 ms 8952 KB Output is correct
71 Correct 6 ms 2688 KB Output is correct
72 Correct 9 ms 2944 KB Output is correct
73 Correct 8 ms 2944 KB Output is correct
74 Correct 8 ms 2944 KB Output is correct
75 Correct 8 ms 2944 KB Output is correct
76 Correct 8 ms 2944 KB Output is correct
77 Correct 8 ms 2944 KB Output is correct
78 Correct 8 ms 2944 KB Output is correct
79 Correct 8 ms 2944 KB Output is correct
80 Correct 132 ms 8956 KB Output is correct
81 Correct 132 ms 9100 KB Output is correct
82 Correct 104 ms 8824 KB Output is correct
83 Correct 108 ms 8824 KB Output is correct
84 Correct 7 ms 2816 KB Output is correct
85 Correct 7 ms 2816 KB Output is correct
86 Correct 7 ms 2944 KB Output is correct
87 Correct 7 ms 2816 KB Output is correct
88 Correct 7 ms 2816 KB Output is correct
89 Correct 7 ms 2816 KB Output is correct
90 Correct 7 ms 2816 KB Output is correct
91 Correct 8 ms 2944 KB Output is correct
92 Correct 8 ms 2944 KB Output is correct
93 Correct 8 ms 2944 KB Output is correct
94 Correct 6 ms 2688 KB Output is correct
95 Correct 6 ms 2688 KB Output is correct
96 Correct 6 ms 2688 KB Output is correct
97 Correct 6 ms 2688 KB Output is correct
98 Correct 6 ms 2688 KB Output is correct
99 Correct 6 ms 2688 KB Output is correct
100 Correct 6 ms 2688 KB Output is correct
101 Correct 6 ms 2688 KB Output is correct
102 Correct 6 ms 2688 KB Output is correct
103 Correct 7 ms 2816 KB Output is correct
104 Correct 14 ms 3968 KB Output is correct
105 Correct 26 ms 6528 KB Output is correct
106 Correct 6 ms 2816 KB Output is correct
107 Correct 66 ms 9720 KB Output is correct
108 Correct 55 ms 15224 KB Output is correct
109 Correct 6 ms 2816 KB Output is correct
110 Correct 92 ms 14840 KB Output is correct
111 Correct 101 ms 17528 KB Output is correct
112 Correct 7 ms 2816 KB Output is correct
113 Correct 161 ms 32888 KB Output is correct
114 Correct 37 ms 6520 KB Output is correct
115 Incorrect 33 ms 6528 KB Output isn't correct
116 Halted 0 ms 0 KB -