oj.uz

답안 #669434

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
669434 2022-12-06T12:45:04 Z Bogdan1110 꿈 (IOI13_dreaming) C++14
0 / 100
 70 ms 57020 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()-2] + l);
  	
    return res;
}

Subtask #1
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 70 ms 57020 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 23 ms 47188 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 70 ms 57020 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 46 ms 51068 KB Output is correct
2 Incorrect 51 ms 51068 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 23 ms 47188 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 70 ms 57020 KB Output isn't correct
2 Halted 0 ms 0 KB -