Submission #813292

#	Time	Username	Problem	Language	Result	Execution time	Memory
813292		Moses	Rail (IOI14_rail)	C++14	0 / 100	188 ms	712 KiB

rail

/*
           _                   _         _       __  __  _____ 
     /\   | |            /\   | |       | |     |  \/  |/ ____|
    /  \  | |__   ___   /  \  | |__   __| | ___ | \  / | |     
   / /\ \ | '_ \ / _ \ / /\ \ | '_ \ / _` |/ _ \| |\/| | |     
  / ____ \| |_) | (_) / ____ \| |_) | (_| | (_) | |  | | |____ 
 /_/    \_\_.__/ \___/_/    \_\_.__/ \__,_|\___/|_|  |_|\_____|
*/

// build command:
// g++ -std=gnu++17 -O3 -DDEBUG -g -fsanitize=signed-integer-overflow -fsanitize=bounds-strict -fsanitize=address -fsanitize=integer-divide-by-zero -fsanitize=float-divide-by-zero -fsanitize=pointer-overflow -fsanitize=shift-exponent -fsplit-stack -Wshadow -Wall -fconcepts -Wno-unused-result

// REMEMBER:
// BS, Offline, Persistent SegTree, SQRT, Treap, MaxFlow, FFT, Matrices

#include "rail.h"
#include <bits/stdc++.h>


using namespace std;

#pragma GCC optimize("O3,unroll-loops")

// DEBUG STUFF
template<typename A, typename B> ostream& operator<<(ostream &os, const pair<A, B> &p) { return os << '(' << p.first << ", " << p.second << ')'; }
template<typename T_container, typename T = typename enable_if<!is_same<T_container, string>::value, typename T_container::value_type>::type> ostream& operator<<(ostream &os, const T_container &v) { os << '{'; string sep; for (const T &x : v) os << sep << x, sep = ", "; return os << '}'; }
void dbg_out() { cerr << endl; }
template<typename Head, typename... Tail> void dbg_out(Head H, Tail... T) { cerr << ' ' << H; dbg_out(T...); }
#ifdef DEBUG
#define dbg(...) cerr << "(" << #__VA_ARGS__ << "):", dbg_out(__VA_ARGS__)
#else
#define dbg(...)
#endif


#define F first
#define S second
#define pb push_back
#define all(x) (x).begin(), (x).end()
#define sz(x) ((int)(x).size())

typedef long long ll;
typedef long double ld;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;

// RANDOM NUMBER GENERATOR
mt19937 RNG(chrono::steady_clock::now().time_since_epoch().count());  
#define SHUF(v) shuffle(all(v), RNG); 
// Use mt19937_64 for 64 bit random numbers.

int getrand(int l,int r) {
	return uniform_int_distribution<int>(l, r)(RNG);
}

const ld eps = 1e-9;
const int mod = 1e9 + 7;
const int oo = 1e9 + 7;
const ll lloo = 1e18 + 7;
const int N = 5000 + 7;

pii mn[N];

vector<pii> g[N];

void dfs(int i,int loc,int type) {
	
}

void findLocation(int n, int first, int location[], int stype[]) {
	location[0] = first;
	stype[0] = 1;
	for(int i = 0 ; i < n ; i++) {
		mn[i] = {oo,-1};
		for(int j = i+1 ; j < n ; j++) {
			int x = getDistance(i,j);
			mn[i] = min(mn[i],{x,j});
			mn[j] = min(mn[j],{x,i});
		}
	}
	
	for(int i = 0 ; i < n ; i++) {
		g[mn[i].S].pb({i,mn[i].F});
	}
	vector<bool> vis(n);
	function<void(int,int,int)> dfs = [&](int i,int loc,int type) {
		vis[i] = 1;
		location[i] = loc;
		stype[i] = type+1;
		for(auto x:g[i]) {
			int v = x.F;
			int w = x.S;
			if (vis[v]) continue;
			dfs(v,loc+(type?(-w):(w)),type^1);
		}
	};
	dfs(0,first,0);
	
	return;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 22
• Subtask 3: 0 / 26
• Subtask 4: 0 / 44