oj.uz

답안 #335873

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
335873 2020-12-14T07:27:12 Z hackxsaras 꿈 (IOI13_dreaming) C++14
47 / 100
 120 ms 18616 KB 
#include "bits/stdc++.h"
#include "dreaming.h"
// #include "chrono"
// #define int long long
using namespace std;
// using namespace std::chrono; 
 
// #pragma GCC target ("avx2")
// #pragma GCC optimization ("O3")
// #pragma GCC optimization ("unroll-loops")
// #pragma optimization_level 3
// #pragma GCC optimize("Ofast,no-stack-protector,unroll-loops,fast-math,O3")
// #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")

#define pb push_back
#define galen_colin {ios_base::sync_with_stdio(false);}
#define orz {cin.tie(NULL); cout.tie(NULL);}
#define fix(prec) {cout << setprecision(prec) << fixed;}
#define mp make_pair
#define f first
#define s second
#define all(v) v.begin(), v.end()

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpi;
typedef vector<pll> vpl;
typedef vector<vi> vvi;
typedef vector<vl> vvl;

template<typename A> ostream& operator<<(ostream &cout, vector<A> const &v);
template<typename A, typename B> ostream& operator<<(ostream &cout, pair<A, B> const &p) { return cout << "(" << p.f << ", " << p.s << ")"; }
template<typename A> ostream& operator<<(ostream &cout, vector<A> const &v) {
    cout << ""; for(int i = 0; i < v.size(); i++) {if (i) cout << " "; cout << v[i];} return cout << "\n";
}
template<typename A, typename B> istream& operator>>(istream& cin, pair<A, B> &p) {
    cin >> p.first;
    return cin >> p.second;
}
template<typename A> istream& operator>>(istream& cin, vector<A> &v) {
    for(auto &x:v)cin>>x;
    return cin;
}

// ll min(ll a, int b){return min(a, (ll) b);}
// ll min(int a, ll b){return min(b, (ll) a);}
// ll max(ll a, int b){return max(a, (ll) b);}
// ll max(int a, ll b){return max(b, (ll) a);}

void usaco(string filename) {
  // #pragma message("be careful, freopen may be wrong")
    freopen((filename + ".in").c_str(), "r", stdin);
    freopen((filename + ".out").c_str(), "w", stdout);
}
 
const ld pi = 3.14159265358979323846;
const ll mod = 1000000007;
// const ll mod = 998244353;
// ll mod;
const ll INF = 1e9+7;
 


ll n, m, k, q, l, r, x, y, z;

const ll sz = 1e5 + 1;
string s, t;
ll ans = 0, gc = 0;

vector<pair<ll,ll>> far;
vector<ll> full, half;
vpl adj[sz];
vl path, vis(sz);

void getccs(int no, int dep){
    vis[no]=1;
    
    if(dep>far[gc].second){
        far[gc]=make_pair(no,dep);
    }
    for(auto i:adj[no]){
        if(!vis[i.f]){
            getccs(i.f,dep+i.s);
        }
    }
    
}
//the max.....in this cc
//if sum > anything else up till now, but say there are only two edges we can't do better ig

ll binary_searc(vl& v){
    ll halfdiff = v.back()/2;
    ll l=0, r = v.size()-1;
    ll ret = v.back();
    while(l<=r){
        ll m = (l+r)/2;
        if(max(v.back() - v[m], v[m]) < ret){
            ret = max(v.back() - v[m], v[m]);
        }
        if(v[m] < v.back() - v[m]){
            l = m+1;
        } else {
            r = m-1;
        }
    }
    return ret;
}
void farfar(ll no, ll dep){
    
    vis[no]=1;
    
    path.push_back(dep);

    full[gc] = max(full[gc], path.back());
    half[gc] = max(half[gc], binary_searc(path));

    for(auto i:adj[no]){
        if(!vis[i.f]){
            farfar(i.f, dep + i.s);
        }
    }
    path.pop_back();
}
int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
    for(int i=0;i<M;i++){
        adj[A[i]].pb({B[i], T[i]});
        adj[B[i]].pb({A[i], T[i]});
    }

    n = N;
    for(int i=0;i<n;i++){

        if(!vis[i]){
            far.push_back(make_pair(-1,-1));
            getccs(i,0);
            gc++;
        }
    }

    gc=0;

    vis.clear();
    vis.resize(sz, 0);
    //aare yrr, notanki
    if(far.size() == n){
        if(n==1)return 0;
        if(n==2)return L;
        return 2*L;
    }
    for(int i=0;i<far.size();i++){
        full.pb(0), half.pb(0);
        farfar(far[i].first, 0);
        gc++;
    }

    
    sort(all(full));
    sort(all(half));

    ans = full.back();
    if(half.size() >= 2)
        ans = max(ans, half[half.size()-1] + half[half.size()-2] + L);

    return ans;
}
 
// int main() {
//     int N,M,L;
//     cin>>N>>M>>L;
//     int A[M], B[M], T[M];
//     for(int i=0;i<M;i++)cin>>A[i]>>B[i]>>T[i];
//     cout<< travelTime(N, M, L, A, B, T);
// } 

/*

12 8 2
0 8 4
8 2 2
2 7 4
5 11 3
5 1 7
1 3 1
1 9 5
10 6 3 

*/

Compilation message

dreaming.cpp: In function 'll binary_searc(vl&)':
dreaming.cpp:97:8: warning: unused variable 'halfdiff' [-Wunused-variable]
   97 |     ll halfdiff = v.back()/2;
      |        ^~~~~~~~
dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:150:19: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} and 'll' {aka 'long long int'} [-Wsign-compare]
  150 |     if(far.size() == n){
      |        ~~~~~~~~~~~^~~~
dreaming.cpp:155:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  155 |     for(int i=0;i<far.size();i++){
      |                 ~^~~~~~~~~~~
dreaming.cpp: In function 'void usaco(std::string)':
dreaming.cpp:57:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   57 |     freopen((filename + ".in").c_str(), "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
dreaming.cpp:58:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   58 |     freopen((filename + ".out").c_str(), "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 66 ms 16736 KB Output is correct
2 Correct 66 ms 16736 KB Output is correct
3 Correct 51 ms 12260 KB Output is correct
4 Correct 10 ms 5484 KB Output is correct
5 Correct 11 ms 4588 KB Output is correct
6 Correct 17 ms 6632 KB Output is correct
7 Correct 3 ms 3564 KB Output is correct
8 Correct 33 ms 8176 KB Output is correct
9 Correct 46 ms 10344 KB Output is correct
10 Correct 3 ms 3564 KB Output is correct
11 Correct 76 ms 12128 KB Output is correct
12 Correct 88 ms 14948 KB Output is correct
13 Correct 3 ms 3564 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 66 ms 16736 KB Output is correct
2 Correct 66 ms 16736 KB Output is correct
3 Correct 51 ms 12260 KB Output is correct
4 Correct 10 ms 5484 KB Output is correct
5 Correct 11 ms 4588 KB Output is correct
6 Correct 17 ms 6632 KB Output is correct
7 Correct 3 ms 3564 KB Output is correct
8 Correct 33 ms 8176 KB Output is correct
9 Correct 46 ms 10344 KB Output is correct
10 Correct 3 ms 3564 KB Output is correct
11 Correct 76 ms 12128 KB Output is correct
12 Correct 88 ms 14948 KB Output is correct
13 Correct 3 ms 3564 KB Output is correct
14 Correct 3 ms 3436 KB Output is correct
15 Correct 3 ms 3436 KB Output is correct
16 Correct 3 ms 3436 KB Output is correct
17 Correct 3 ms 3436 KB Output is correct
18 Correct 3 ms 3436 KB Output is correct
19 Correct 3 ms 3436 KB Output is correct
20 Correct 3 ms 3436 KB Output is correct
21 Correct 3 ms 3436 KB Output is correct
22 Correct 3 ms 3436 KB Output is correct
23 Correct 3 ms 3436 KB Output is correct
24 Correct 3 ms 3436 KB Output is correct
25 Correct 3 ms 3436 KB Output is correct
26 Correct 4 ms 3436 KB Output is correct
27 Correct 3 ms 3436 KB Output is correct
28 Correct 3 ms 3436 KB Output is correct
29 Correct 3 ms 3436 KB Output is correct
30 Correct 3 ms 3436 KB Output is correct
31 Correct 3 ms 3436 KB Output is correct
32 Correct 3 ms 3436 KB Output is correct
33 Correct 3 ms 3436 KB Output is correct
34 Correct 3 ms 3436 KB Output is correct
35 Correct 3 ms 3436 KB Output is correct
36 Correct 3 ms 3436 KB Output is correct
37 Correct 3 ms 3436 KB Output is correct
38 Correct 3 ms 3436 KB Output is correct

Subtask #3
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 66 ms 16736 KB Output is correct
2 Correct 66 ms 16736 KB Output is correct
3 Correct 51 ms 12260 KB Output is correct
4 Correct 10 ms 5484 KB Output is correct
5 Correct 11 ms 4588 KB Output is correct
6 Correct 17 ms 6632 KB Output is correct
7 Correct 3 ms 3564 KB Output is correct
8 Correct 33 ms 8176 KB Output is correct
9 Correct 46 ms 10344 KB Output is correct
10 Correct 3 ms 3564 KB Output is correct
11 Correct 76 ms 12128 KB Output is correct
12 Correct 88 ms 14948 KB Output is correct
13 Correct 3 ms 3564 KB Output is correct
14 Correct 3 ms 3436 KB Output is correct
15 Correct 3 ms 3436 KB Output is correct
16 Correct 3 ms 3436 KB Output is correct
17 Correct 3 ms 3436 KB Output is correct
18 Correct 3 ms 3436 KB Output is correct
19 Correct 3 ms 3436 KB Output is correct
20 Correct 3 ms 3436 KB Output is correct
21 Correct 3 ms 3436 KB Output is correct
22 Correct 3 ms 3436 KB Output is correct
23 Correct 3 ms 3436 KB Output is correct
24 Correct 3 ms 3436 KB Output is correct
25 Correct 3 ms 3436 KB Output is correct
26 Correct 4 ms 3436 KB Output is correct
27 Correct 3 ms 3436 KB Output is correct
28 Correct 3 ms 3436 KB Output is correct
29 Correct 3 ms 3436 KB Output is correct
30 Correct 3 ms 3436 KB Output is correct
31 Correct 3 ms 3436 KB Output is correct
32 Correct 3 ms 3436 KB Output is correct
33 Correct 3 ms 3436 KB Output is correct
34 Correct 3 ms 3436 KB Output is correct
35 Correct 3 ms 3436 KB Output is correct
36 Correct 3 ms 3436 KB Output is correct
37 Correct 3 ms 3436 KB Output is correct
38 Correct 3 ms 3436 KB Output is correct
39 Correct 87 ms 16864 KB Output is correct
40 Correct 78 ms 16736 KB Output is correct
41 Correct 45 ms 12260 KB Output is correct
42 Correct 12 ms 5484 KB Output is correct
43 Correct 3 ms 3436 KB Output is correct
44 Correct 3 ms 3436 KB Output is correct
45 Correct 3 ms 3436 KB Output is correct
46 Correct 3 ms 3436 KB Output is correct
47 Correct 3 ms 3436 KB Output is correct
48 Correct 3 ms 3436 KB Output is correct
49 Correct 3 ms 3436 KB Output is correct
50 Correct 3 ms 3584 KB Output is correct
51 Correct 3 ms 3436 KB Output is correct
52 Correct 3 ms 3436 KB Output is correct
53 Correct 3 ms 3436 KB Output is correct
54 Correct 3 ms 3436 KB Output is correct
55 Correct 3 ms 3436 KB Output is correct
56 Correct 3 ms 3436 KB Output is correct
57 Correct 96 ms 10496 KB Output is correct
58 Correct 100 ms 10476 KB Output is correct
59 Correct 107 ms 10348 KB Output is correct
60 Correct 120 ms 10348 KB Output is correct
61 Correct 101 ms 10220 KB Output is correct
62 Correct 93 ms 10092 KB Output is correct
63 Correct 85 ms 9836 KB Output is correct
64 Correct 94 ms 9836 KB Output is correct
65 Correct 111 ms 9836 KB Output is correct
66 Correct 95 ms 9836 KB Output is correct
67 Correct 97 ms 10348 KB Output is correct
68 Correct 101 ms 10348 KB Output is correct
69 Correct 120 ms 10348 KB Output is correct
70 Correct 102 ms 10348 KB Output is correct
71 Correct 3 ms 3436 KB Output is correct
72 Correct 4 ms 3692 KB Output is correct
73 Correct 4 ms 3692 KB Output is correct
74 Correct 4 ms 3692 KB Output is correct
75 Correct 5 ms 3692 KB Output is correct
76 Correct 4 ms 3692 KB Output is correct
77 Correct 4 ms 3692 KB Output is correct
78 Correct 4 ms 3692 KB Output is correct
79 Correct 4 ms 3692 KB Output is correct
80 Correct 98 ms 10348 KB Output is correct
81 Correct 104 ms 10220 KB Output is correct
82 Correct 93 ms 10100 KB Output is correct
83 Correct 93 ms 10092 KB Output is correct
84 Correct 4 ms 3564 KB Output is correct
85 Correct 4 ms 3564 KB Output is correct
86 Correct 5 ms 3564 KB Output is correct
87 Correct 4 ms 3692 KB Output is correct
88 Correct 4 ms 3564 KB Output is correct
89 Correct 4 ms 3840 KB Output is correct
90 Correct 4 ms 3564 KB Output is correct
91 Correct 4 ms 3692 KB Output is correct
92 Correct 4 ms 3692 KB Output is correct
93 Correct 6 ms 3692 KB Output is correct
94 Correct 3 ms 3436 KB Output is correct
95 Correct 3 ms 3436 KB Output is correct
96 Correct 3 ms 3436 KB Output is correct
97 Correct 3 ms 3436 KB Output is correct
98 Correct 3 ms 3436 KB Output is correct
99 Correct 3 ms 3436 KB Output is correct
100 Correct 3 ms 3436 KB Output is correct
101 Correct 3 ms 3436 KB Output is correct
102 Correct 3 ms 3436 KB Output is correct
103 Correct 3 ms 3436 KB Output is correct
104 Correct 8 ms 4588 KB Output is correct
105 Correct 17 ms 6632 KB Output is correct
106 Correct 3 ms 3564 KB Output is correct
107 Correct 32 ms 8176 KB Output is correct
108 Correct 45 ms 10216 KB Output is correct
109 Correct 3 ms 3564 KB Output is correct
110 Correct 95 ms 12096 KB Output is correct
111 Correct 89 ms 14820 KB Output is correct
112 Correct 3 ms 3564 KB Output is correct
113 Correct 117 ms 18616 KB Output is correct

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 39 ms 8040 KB Output is correct
2 Incorrect 38 ms 8184 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 66 ms 16736 KB Output is correct
2 Correct 66 ms 16736 KB Output is correct
3 Correct 51 ms 12260 KB Output is correct
4 Correct 10 ms 5484 KB Output is correct
5 Correct 11 ms 4588 KB Output is correct
6 Correct 17 ms 6632 KB Output is correct
7 Correct 3 ms 3564 KB Output is correct
8 Correct 33 ms 8176 KB Output is correct
9 Correct 46 ms 10344 KB Output is correct
10 Correct 3 ms 3564 KB Output is correct
11 Correct 76 ms 12128 KB Output is correct
12 Correct 88 ms 14948 KB Output is correct
13 Correct 3 ms 3564 KB Output is correct
14 Correct 3 ms 3564 KB Output is correct
15 Correct 4 ms 3564 KB Output is correct
16 Correct 4 ms 3692 KB Output is correct
17 Correct 3 ms 3564 KB Output is correct
18 Correct 3 ms 3564 KB Output is correct
19 Correct 4 ms 3692 KB Output is correct
20 Incorrect 3 ms 3564 KB Output isn't correct
21 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 66 ms 16736 KB Output is correct
2 Correct 66 ms 16736 KB Output is correct
3 Correct 51 ms 12260 KB Output is correct
4 Correct 10 ms 5484 KB Output is correct
5 Correct 11 ms 4588 KB Output is correct
6 Correct 17 ms 6632 KB Output is correct
7 Correct 3 ms 3564 KB Output is correct
8 Correct 33 ms 8176 KB Output is correct
9 Correct 46 ms 10344 KB Output is correct
10 Correct 3 ms 3564 KB Output is correct
11 Correct 76 ms 12128 KB Output is correct
12 Correct 88 ms 14948 KB Output is correct
13 Correct 3 ms 3564 KB Output is correct
14 Correct 3 ms 3436 KB Output is correct
15 Correct 3 ms 3436 KB Output is correct
16 Correct 3 ms 3436 KB Output is correct
17 Correct 3 ms 3436 KB Output is correct
18 Correct 3 ms 3436 KB Output is correct
19 Correct 3 ms 3436 KB Output is correct
20 Correct 3 ms 3436 KB Output is correct
21 Correct 3 ms 3436 KB Output is correct
22 Correct 3 ms 3436 KB Output is correct
23 Correct 3 ms 3436 KB Output is correct
24 Correct 3 ms 3436 KB Output is correct
25 Correct 3 ms 3436 KB Output is correct
26 Correct 4 ms 3436 KB Output is correct
27 Correct 3 ms 3436 KB Output is correct
28 Correct 3 ms 3436 KB Output is correct
29 Correct 3 ms 3436 KB Output is correct
30 Correct 3 ms 3436 KB Output is correct
31 Correct 3 ms 3436 KB Output is correct
32 Correct 3 ms 3436 KB Output is correct
33 Correct 3 ms 3436 KB Output is correct
34 Correct 3 ms 3436 KB Output is correct
35 Correct 3 ms 3436 KB Output is correct
36 Correct 3 ms 3436 KB Output is correct
37 Correct 3 ms 3436 KB Output is correct
38 Correct 3 ms 3436 KB Output is correct
39 Correct 87 ms 16864 KB Output is correct
40 Correct 78 ms 16736 KB Output is correct
41 Correct 45 ms 12260 KB Output is correct
42 Correct 12 ms 5484 KB Output is correct
43 Correct 3 ms 3436 KB Output is correct
44 Correct 3 ms 3436 KB Output is correct
45 Correct 3 ms 3436 KB Output is correct
46 Correct 3 ms 3436 KB Output is correct
47 Correct 3 ms 3436 KB Output is correct
48 Correct 3 ms 3436 KB Output is correct
49 Correct 3 ms 3436 KB Output is correct
50 Correct 3 ms 3584 KB Output is correct
51 Correct 3 ms 3436 KB Output is correct
52 Correct 3 ms 3436 KB Output is correct
53 Correct 3 ms 3436 KB Output is correct
54 Correct 3 ms 3436 KB Output is correct
55 Correct 3 ms 3436 KB Output is correct
56 Correct 3 ms 3436 KB Output is correct
57 Correct 96 ms 10496 KB Output is correct
58 Correct 100 ms 10476 KB Output is correct
59 Correct 107 ms 10348 KB Output is correct
60 Correct 120 ms 10348 KB Output is correct
61 Correct 101 ms 10220 KB Output is correct
62 Correct 93 ms 10092 KB Output is correct
63 Correct 85 ms 9836 KB Output is correct
64 Correct 94 ms 9836 KB Output is correct
65 Correct 111 ms 9836 KB Output is correct
66 Correct 95 ms 9836 KB Output is correct
67 Correct 97 ms 10348 KB Output is correct
68 Correct 101 ms 10348 KB Output is correct
69 Correct 120 ms 10348 KB Output is correct
70 Correct 102 ms 10348 KB Output is correct
71 Correct 3 ms 3436 KB Output is correct
72 Correct 4 ms 3692 KB Output is correct
73 Correct 4 ms 3692 KB Output is correct
74 Correct 4 ms 3692 KB Output is correct
75 Correct 5 ms 3692 KB Output is correct
76 Correct 4 ms 3692 KB Output is correct
77 Correct 4 ms 3692 KB Output is correct
78 Correct 4 ms 3692 KB Output is correct
79 Correct 4 ms 3692 KB Output is correct
80 Correct 98 ms 10348 KB Output is correct
81 Correct 104 ms 10220 KB Output is correct
82 Correct 93 ms 10100 KB Output is correct
83 Correct 93 ms 10092 KB Output is correct
84 Correct 4 ms 3564 KB Output is correct
85 Correct 4 ms 3564 KB Output is correct
86 Correct 5 ms 3564 KB Output is correct
87 Correct 4 ms 3692 KB Output is correct
88 Correct 4 ms 3564 KB Output is correct
89 Correct 4 ms 3840 KB Output is correct
90 Correct 4 ms 3564 KB Output is correct
91 Correct 4 ms 3692 KB Output is correct
92 Correct 4 ms 3692 KB Output is correct
93 Correct 6 ms 3692 KB Output is correct
94 Correct 3 ms 3436 KB Output is correct
95 Correct 3 ms 3436 KB Output is correct
96 Correct 3 ms 3436 KB Output is correct
97 Correct 3 ms 3436 KB Output is correct
98 Correct 3 ms 3436 KB Output is correct
99 Correct 3 ms 3436 KB Output is correct
100 Correct 3 ms 3436 KB Output is correct
101 Correct 3 ms 3436 KB Output is correct
102 Correct 3 ms 3436 KB Output is correct
103 Correct 3 ms 3436 KB Output is correct
104 Correct 8 ms 4588 KB Output is correct
105 Correct 17 ms 6632 KB Output is correct
106 Correct 3 ms 3564 KB Output is correct
107 Correct 32 ms 8176 KB Output is correct
108 Correct 45 ms 10216 KB Output is correct
109 Correct 3 ms 3564 KB Output is correct
110 Correct 95 ms 12096 KB Output is correct
111 Correct 89 ms 14820 KB Output is correct
112 Correct 3 ms 3564 KB Output is correct
113 Correct 117 ms 18616 KB Output is correct
114 Correct 39 ms 8040 KB Output is correct
115 Incorrect 38 ms 8184 KB Output isn't correct
116 Halted 0 ms 0 KB -