| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 234745 | 2020-05-25T12:50:17 Z | muhammad_hokimiyon | 악어의 지하 도시 (IOI11_crocodile) | C++14 | 0 ms | 0 KB |
#include "crocodile.h"
#include <bits/stdc++.h>
#define fi first
#define se second
#define ll long long
#define dl double long
using namespace std;
const int NN = 2e6 + 7;
const int N = 1e5 + 7;
const int M = 22;
const int mod = 998244353;
const ll inf = 1e18 + 7;
const dl rf = 1e-14;
const int B = sqrt(N);
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int b[N];
bool used[N];
vector < pair < int , ll > > v[N];
pair < ll , int > dfs( int x )
{
if( b[x] ){
return {0 , 0};
}
used[x] = true;
vector < pair < ll , int > > g;
for( int i = 0; i < (int)v[x].size(); i++ ){
auto y = v[x][i];
if( used[y.fi] )continue;
auto xx = dfs( y.fi );
xx.fi += y.se;
//cout << x << " " << y.fi << " " << xx << "\n";
g.push_back(xx);
}
if( (int)g.size() < 2 )return {g[0].fi , 1};
sort( g.begin() , g.end() );
if( (int)g.size() > 2 && g[1].se == 1 )return g[2].fi;
return g[1].fi;
}
int travel_plan(int n, int m, int a[][2], int l[], int k, int p[])
{
for( int i = 0; i < m; i++ ){
a[i][0] += 1 , a[i][1] += 1;
}
for( int i = 0; i < m; i++ ){
v[a[i][0]].push_back({ a[i][1] , l[i] });
v[a[i][1]].push_back({ a[i][0] , l[i] });
}
for( int i = 0; i < k; i++ ){
p[i] += 1;
b[p[i]] = 1;
}
return dfs(1).fi;
}