Submission #48452

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
48452	2018-05-13 16:16:15	Pajaraja	Tracks in the Snow (BOI13_tracks)	C++17	100 / 100	1879 ms	685748 KiB

tracks

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#include <bits/stdc++.h>
using namespace std;
int t[4007][4007],vi[4007][4007],n,m;
queue<pair<int,int> > q[3];
void dfs(int x,int y,int k)
{
  if(x<0 || y<0 || x>=n || y>=m || vi[x][y]) return;
  if(t[x][y]!=k)
  {
    if(t[x][y]==3-k) q[3-k].push(make_pair(x,y));
    return;
  }
  vi[x][y]=true;
  dfs(x-1,y,k);
  dfs(x+1,y,k);
  dfs(x,y-1,k);
  dfs(x,y+1,k);
}
int main()
{
  int sol=0;
  cin>>n>>m;
  for(int i=0;i<n;i++)
  {
    string s;
    cin>>s;
    for(int j=0;j<m;j++) t[i][j]=(s[j]=='F'?2:(s[j]=='R'?1:0));
  }
  q[t[0][0]].push(make_pair(0,0));
  for(int i=0;i<16000000;i++)
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 70 / 70