Submission #133876

#	Time	Username	Problem	Language	Result	Execution time	Memory
133876		arthurconmy	Wombats (IOI13_wombats)	C++14	28 / 100	20074 ms	17672 KiB

wombats

#include <bits/stdc++.h>

#ifndef ARTHUR_LOCAL
	#include "wombats.h"
#endif

using namespace std;
using pii=pair<int,int>;

const int INF = 1000000000;
int r=-1;
int c=-1;
int H[5000][200];
int V[5000][200];
vector<pii> adj[10000];
int dis[10000];

void init(int r_raw, int c_raw, int H_raw[5000][200], int V_raw[5000][200])
{
	r=r_raw;
	c=c_raw;

	for(int i=0; i<5000; i++)
	{
		for(int j=0; j<200; j++)
		{
			H[i][j]=H_raw[i][j];
			V[i][j]=V_raw[i][j];
		}
	}

	for(int i=0; i<10000; i++)
	{
		int row=int(i/c);
		int col=i%c;

		if(row>=r) break;

		// << "RC: " << row << " " << col << endl;

		if(row < r-1)
		{
			// dis[i][i+c] = V[row][col];
			//cout << i << " " << i+c << " " << V[row][col] << " V" << endl;
		
			adj[i].push_back(make_pair(i+c,V[row][col]));
		}

		if(col < c-1)
		{
			// dis[i][i+1] = H[row][col];
			// dis[i+1][i] = H[row][col];
			//cout << i << " " << i+1 << " " << H[row][col] << " H" << endl;
		
			adj[i].push_back(make_pair(i+1,H[row][col]));
			adj[i+1].push_back(make_pair(i,H[row][col]));
		}
	}

	// cout << "here" << endl;
}

void changeH(int p, int q, int w)
{
	for(int i=0; i<adj[p*c + q].size(); i++)
	{
		pii u = adj[p*c + q][i];

		if(u.first == p*c + q + 1)
		{
			adj[p*c + q][i] = {u.first, w};
			break;
		}
	}

	for(int i=0; i<adj[p*c + q + 1].size(); i++)
	{
		pii u = adj[p*c + q + 1][i];

		if(u.first == p*c + q)
		{
			adj[p*c + q + 1][i] = {u.first, w};
			break;
		}
	}
}

void changeV(int p, int q, int w)
{
	for(int i=0; i<adj[p*c + q].size(); i++)
	{
		pii u = adj[p*c + q][i];

		if(u.first == p*c + q + c)
		{
			adj[p*c + q][i] = {u.first,w};
			break;
		}
	}

	for(int i=0; i<adj[p*c + q + c].size(); i++)
	{
		pii u = adj[p*c + q + c][i];

		if(u.first == p*c + q)
		{
			adj[p*c + q + c][i] = {u.first,w};
			break;
		}
	}
}


int escape(int v1, int v2)
{
	for(int i=0; i<10000; i++) dis[i]=INF;

	priority_queue<pii> PQ;
	PQ.push(make_pair(-0,v1));

	while(!PQ.empty())
	{
		int v = PQ.top().second;
		int cur_dis = -PQ.top().first;
		PQ.pop();

		if(dis[v]!=INF) continue;
		//if(v1==3) cout << v << " " << cur_dis << endl;
		dis[v]=cur_dis;

		for(auto pear:adj[v])
		{
			int jump=pear.second;
			int w=pear.first;

			if(dis[w]==INF)
			{
				PQ.push(make_pair(-cur_dis-jump,w));
			}
		}
	}

	#ifdef ARTHUR_LOCAL
		cout << dis[c*(r-1) + v2] << endl;
	#endif

	return dis[c*(r-1) + v2];
}

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
  int res;
      ^~~
wombats.cpp: In function 'void changeH(int, int, int)':
wombats.cpp:65:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<adj[p*c + q].size(); i++)
               ~^~~~~~~~~~~~~~~~~~~~
wombats.cpp:76:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<adj[p*c + q + 1].size(); i++)
               ~^~~~~~~~~~~~~~~~~~~~~~~~
wombats.cpp: In function 'void changeV(int, int, int)':
wombats.cpp:90:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<adj[p*c + q].size(); i++)
               ~^~~~~~~~~~~~~~~~~~~~
wombats.cpp:101:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0; i<adj[p*c + q + c].size(); i++)
               ~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 9
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 0 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 24