Submission #961996

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
961996	2024-04-13 02:21:25	pcc	Tracks in the Snow (BOI13_tracks)	C++17	60.63 / 100	2073 ms	102212 KiB

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#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>
#define tiii tuple<int,int,int>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,popcnt,sse4")
const int mxn = 4040;
int N,M;
string arr[mxn];
int dist[mxn][mxn];
deque<tiii> dq;
pii dir[] = {{0,1},{0,-1},{1,0},{-1,0}};
int main(){
  ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
  memset(dist,-1,sizeof(dist));
  cin>>N>>M;
  for(int i = 1;i<=N;i++){
    cin>>arr[i];
    arr[i] = "."+arr[i]+".";
  }
  arr[0] = arr[N+1] = string(M+2,'.');
  dist[1][1] = 1;
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 30.625 / 70