oj.uz

답안 #669437

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
669437 2022-12-06T12:50:21 Z Bogdan1110 꿈 (IOI13_dreaming) C++14
18 / 100
 69 ms 57036 KB 
#include <bits/stdc++.h>
#include "dreaming.h"
#define FAST {ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);}
#define FILES {freopen("input.txt", "r", stdin);freopen("output.txt", "w", stdout);}
#define ll long long
#define ull unsigned long long
#define pqueue priority_queue
#define pb push_back
#define fi first
#define se second
#define ld long double
#define pii pair<int,int>
#define pll pair<long long,long long>
#define all(a) (a).begin(), (a).end()
#define mp make_pair 
using namespace std;
// order_of_key -> # less than k
// find_by_order -> k-th element
// pq max element
 
const double eps = 0.00000001;
const int NMAX = 2000010;
const ll inf = LLONG_MAX/3;
const ll modi = 998244353;
 
int D, maks, mx;
vector<pii>al[NMAX];
int visited[NMAX], dis[NMAX], vv[NMAX];
int maksd,poc;
 
vector<int>vis,nes;
set<int>vektor;
 
void izr() {
    for (auto u : vis) {
        u = dis[u];
        maks = min(maks, max(u,D-u));
    }
}
 
void dfs1(int node, int dist = 0) {
    if (visited[node]) {
        return;
    }
    vv[node] = 1;
    vis.pb(node);
    visited[node] =1;
    if ( dist > maksd ) {
        maksd = dist;
        poc = node;
    }
    for (auto u : al[node] ) {
        dfs1(u.fi, u.se + dist);
    }
}
 
void dfs2(int node, int dist = 0) {
    if (visited[node]) {
        return;
    }
    vis.pb(node);
    visited[node] =1;
    dis[node] = max(dis[node], dist);
    if ( dist > maksd ) {
        maksd = dist;
        poc = node;
    }
    
    for (auto u : al[node] ) {
        dfs2(u.fi, u.se + dist);
    }
}
 
void clrvis() {
    for (auto u : vis) {
        visited[u] = 0;
    }
    vis.clear();
}

void clrdis() {
    for (auto u : vis) {
        dis[u] = 0;
    }
}
 
   
int travelTime(int n,int m,int l,int A[],int B[],int T[]) {
    for (int i = 0 ; i < m; i++) {
        al[A[i]].pb({B[i],T[i]});
        al[B[i]].pb({A[i],T[i]});
    }
    vector<int>r;
    for (int i = 0 ; i < n ; i++ ) {
        if (!vv[i]) {
            maksd = -1;
            dfs1(i);
            clrvis();
		
		 int poc1 = poc;
		   
            
            maksd = -1;
            dfs1(poc);
            
            clrdis();
            clrvis();
 		
 		
		int poc2 = poc;
		D = maksd;
		
		dfs2(poc1);
		clrvis();
		dfs2(poc2);
		
		maks = INT_MAX;
		izr();
		
		clrdis();
		
		//cout << D << ' ' << maks << endl;
						
 		
            r.pb(maks);
        }
    }
 
    //for (auto u : r) cout << u << ' ';
    
 
    sort(all(r));
    int res = r[r.size()-1];
  	if ( r.size() == 1 ) {
      	return res;
    }
  	if ( r.size() == 2 ) {
      	return res + r[0] + l;
    }
  
  	res = max(res, res + r[r.size()-2] + l);
  	res = max(res , r[r.size()-2] + l + r[r.size()-3] + l);
  	
    return res;
}

Subtask #1
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 69 ms 57036 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 21 ms 47240 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 69 ms 57036 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 43 ms 51080 KB Output is correct
2 Correct 46 ms 51076 KB Output is correct
3 Correct 46 ms 51084 KB Output is correct
4 Correct 51 ms 51072 KB Output is correct
5 Correct 53 ms 51048 KB Output is correct
6 Correct 46 ms 51580 KB Output is correct
7 Correct 44 ms 51236 KB Output is correct
8 Correct 43 ms 50980 KB Output is correct
9 Correct 46 ms 51004 KB Output is correct
10 Correct 45 ms 51160 KB Output is correct
11 Correct 26 ms 47204 KB Output is correct
12 Correct 32 ms 49040 KB Output is correct
13 Correct 30 ms 49116 KB Output is correct
14 Correct 32 ms 49080 KB Output is correct
15 Correct 31 ms 49140 KB Output is correct
16 Correct 29 ms 49232 KB Output is correct
17 Correct 31 ms 48972 KB Output is correct
18 Correct 36 ms 49072 KB Output is correct
19 Correct 30 ms 49008 KB Output is correct
20 Correct 22 ms 47300 KB Output is correct
21 Correct 25 ms 47256 KB Output is correct
22 Correct 23 ms 47316 KB Output is correct
23 Correct 30 ms 49096 KB Output is correct

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 21 ms 47240 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 69 ms 57036 KB Output isn't correct
2 Halted 0 ms 0 KB -