Submission #151481

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
151481	2019-09-03T11:32:17 Z	Nucleist	Sky Walking (IOI19_walk)	C++14	Compilation error	0 ms	0 KB

walk

#include <bits/stdc++.h>
#include "walk.h" 
using namespace std; 
#define flash ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#define debug(x) cerr << " - " << #x << ": " << x << endl;
#define debugs(x, y) cerr << " - " << #x << ": " << x << " " << #y << ": " << y << endl;
#define all(x) (x).begin(),(x).end()
#define sz(x) (ll)x.size()
#define ll long long
#define INF 1000000000
#define pb push_back
#define ve vector<ll>
#define dos pair<ll,ll>
#define vedos vector<dos>
struct greateri
{
    template<class T>
    bool operator()(T const &a, T const &b) const { return a > b; }
};
ll so,go;
ll n,m;
vector<pair<ll,pair<ll,ll>>>graph[100001];
map<ll,pair<ll,ll>>gg;
map<pair<ll,ll>,ll>dist;
map<pair<ll,ll>,ll>in_queu;
ll min_distance(vector<ll>x,vector<ll>h,vector<ll>l,vector<ll>r,vector<ll>y,ll s,ll g)
{
  for (ll i = 0; i < x.size(); ++i)
  {
  	gg[x[i]]={h[i],i};
  }
  for (ll i = 0; i < l.size(); ++i)
  {
  	auto k = gg.lower_bound(x[l[i]]);
  	auto hedi = (*k).first;
  	auto yo = (*k).second;
  	vector<pair<ll,ll>>connect;
  	while(hedi<=x[r[i]] && k!=gg.end())
  	{
  		if(yo.first>=y[i])
  		{
  			connect.pb({hedi,yo.second});
  		}
  		k++;
  		hedi = (*k).first;
  		yo = (*k).second;
  	}
  	for (ll j = 0; j < connect.size(); ++j)
  	{
  		for (ll d = j+1; d < connect.size(); ++d)
  		{
  			ll node = connect[j].second;
  			ll node1 = connect[d].second;
  			ll weight = abs(connect[d].first-connect[j].first);
  			graph[node].pb({node1,{y[i],weight}});
  			graph[node1].pb({node,{y[i],weight}});
  		}
  	}
  }
  queue<pair<ll,ll>>now;
  now.push({s,0});
  dist[{s,0}]=0;
  ll ans=INF;
  while(!now.empty())
  {
  	auto ni = now.front();
  	//debug(ni.first);
  	now.pop();
  	in_queu[ni]=0;
  	for (ll i = 0; i < graph[ni.first].size(); ++i)
  	{
		ll to = graph[ni.first][i].first;
  		ll index = graph[ni.first][i].second.first;
  		if((dist.find({to,index})==dist.end()||(dist[{to,index}]>dist[ni]+abs(ni.second-index)+abs(x[ni.first]-x[to])))) 
  		{
  			//debug(to);
  			dist[{to,index}]=dist[ni]+abs(ni.second-index)+abs(x[ni.first]-x[to]);
  			if(to==go)ans=min(ans,dist[{to,index}]+index);
  			if(!in_queu[{to,index}] || in_queu.find({to,index})==in_queu.end())
  				{in_queu[{to,index}]=1,now.push({to,index});}
  		}
  	}
  }
  if(ans==INF)return -1;
  return ans;
}
//code the AC sol !
// BS/queue/map

Compilation message

walk.cpp: In function 'long long int min_distance(std::vector<long long int>, std::vector<long long int>, std::vector<long long int>, std::vector<long long int>, std::vector<long long int>, long long int, long long int)':
walk.cpp:28:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (ll i = 0; i < x.size(); ++i)
                  ~~^~~~~~~~~~
walk.cpp:32:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (ll i = 0; i < l.size(); ++i)
                  ~~^~~~~~~~~~
walk.cpp:48:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (ll j = 0; j < connect.size(); ++j)
                   ~~^~~~~~~~~~~~~~~~
walk.cpp:50:24: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (ll d = j+1; d < connect.size(); ++d)
                      ~~^~~~~~~~~~~~~~~~
walk.cpp:70:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (ll i = 0; i < graph[ni.first].size(); ++i)
                   ~~^~~~~~~~~~~~~~~~~~~~~~~~
/tmp/cc50hucZ.o: In function `main':
grader.cpp:(.text.startup+0x378): undefined reference to `min_distance(std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >, int, int)'
collect2: error: ld returned 1 exit status