Submission #895547

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
895547	2023-12-30 08:47:21	123456321	Tracks in the Snow (BOI13_tracks)	C++17	19.79 / 100	2060 ms	262428 KiB

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#include <bits/stdc++.h>
#define ll long long
using namespace std;
const int mod = 1000000007;
int n,m;
#define pb push_back
#define mp make_pair
vector<vector<pair<int,int>>> adj;
void solve()
{
    cin >> n >>m ;
    vector<string> snow(n);
    for(int i = 0;i<n;i++)cin >> snow[i];
    deque<pair<int,int>> q;
    vector<vector<int>> vis(n,vector<int>(m,0));
    vector<vector<int>> dist(n,vector<int>(m,1e9));
    vector<vector<int>> parent(n,vector<int>(m,-1));    
    vector<vector<int>> dir = {{1,0},{-1,0},{0,1},{0,-1}};
    q.push_back({0,0});
    dist[0][0] = 1;
    int ans = 0;
    while(!q.empty())
    {
        auto curr = q.front();
        q.pop_front();
        int x = curr.first;
        int y = curr.second;
        if(vis[x][y])continue;
 
 
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• Subtask 1: 6.666666666666667 / 30
• Subtask 2: 13.125 / 70