Submission #366953

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
366953	2021-02-15 19:59:10	vishesh312	Tracks in the Snow (BOI13_tracks)	C++17	100 / 100	1148 ms	984844 KiB

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#include "bits/stdc++.h"
using namespace std;
/*
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
using ordered_set = tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update>;
*/
#define all(x) begin(x), end(x)
#define sz(x) (int)x.size()
using ll = long long;
const int mod = 1e9+7;
vector<string> v;
int n, m;
int ans = 0;
array<vector<array<int, 2>>, 2> cur;
bool isValid(int i, int j) {
    return i < n and i >= 0 and j < m and j >= 0 and v[i][j] != '.';
}
vector<array<int, 2>> moves = {{0, 1}, {0, -1}, {1, 0}, {-1, 0}};
void dfs(array<int, 2> a) {
    char c = v[a[0]][a[1]];
    v[a[0]][a[1]] = '.';
    for (auto m : moves) {
        int nx = a[0] + m[0], ny = a[1] + m[1];
        if (isValid(nx, ny)) {
 
 
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• Subtask 1: 30 / 30
• Subtask 2: 70 / 70