oj.uz

Submission #877686

# Submission time Handle Problem Language Result Execution time Memory
877686 2023-11-23T12:46:10 Z Beerus13 Tracks in the Snow (BOI13_tracks) C++14
100 / 100
 581 ms 59188 KB 
#include <bits/stdc++.h>
using namespace std;
#define ll long long
const int N = 4e3 + 5;

int h, w;
string s[N];
int dx[] = {-1, 0, 0, 1};
int dy[] = {0, -1, 1, 0};
bool vs[N][N];
queue<pair<int, int>> q[2];

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    cin >> h >> w;
    for(int i = 0; i < h; ++i) cin >> s[i];
    bool cur = (s[0][0] == 'F');
    vs[0][0] = 1;
    q[cur].emplace(0, 0);
    int cnt = 0;
    while(q[0].size() || q[1].size()) {
        while(q[cur].size()) {
            auto [u, v] = q[cur].front(); q[cur].pop();
            for(int i = 0; i < 4; ++i) {
                int x = u + dx[i];
                int y = v + dy[i];
                if(x < 0 || x >= h || y < 0 || y >= w) continue;
                if(vs[x][y] || s[x][y] == '.') continue;
                vs[x][y] = 1;
                bool tmp = (s[x][y] == 'F');
                q[tmp].emplace(x, y);
            }
        }
        ++cnt;
        cur ^= 1;
    }
    cout << cnt;
    return 0;
}

Compilation message

tracks.cpp: In function 'int main()':
tracks.cpp:24:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   24 |             auto [u, v] = q[cur].front(); q[cur].pop();
      |                  ^

Subtask #1
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 2908 KB Output is correct
2 Correct 0 ms 604 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 4 ms 2908 KB Output is correct
5 Correct 2 ms 1884 KB Output is correct
6 Correct 0 ms 604 KB Output is correct
7 Correct 1 ms 568 KB Output is correct
8 Correct 1 ms 604 KB Output is correct
9 Correct 1 ms 860 KB Output is correct
10 Correct 2 ms 1628 KB Output is correct
11 Correct 2 ms 1372 KB Output is correct
12 Correct 3 ms 1884 KB Output is correct
13 Correct 2 ms 1884 KB Output is correct
14 Correct 2 ms 1884 KB Output is correct
15 Correct 7 ms 3084 KB Output is correct
16 Correct 8 ms 2908 KB Output is correct
17 Correct 6 ms 2908 KB Output is correct
18 Correct 4 ms 2904 KB Output is correct

Subtask #2
70.0 / 70.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 15448 KB Output is correct
2 Correct 27 ms 8792 KB Output is correct
3 Correct 139 ms 49132 KB Output is correct
4 Correct 32 ms 15392 KB Output is correct
5 Correct 114 ms 30856 KB Output is correct
6 Correct 580 ms 59088 KB Output is correct
7 Correct 7 ms 16220 KB Output is correct
8 Correct 7 ms 15452 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 7 ms 15832 KB Output is correct
12 Correct 1 ms 1116 KB Output is correct
13 Correct 26 ms 8540 KB Output is correct
14 Correct 15 ms 5976 KB Output is correct
15 Correct 11 ms 6492 KB Output is correct
16 Correct 13 ms 3420 KB Output is correct
17 Correct 75 ms 16724 KB Output is correct
18 Correct 45 ms 16472 KB Output is correct
19 Correct 32 ms 15324 KB Output is correct
20 Correct 33 ms 14424 KB Output is correct
21 Correct 81 ms 31828 KB Output is correct
22 Correct 119 ms 30804 KB Output is correct
23 Correct 158 ms 26344 KB Output is correct
24 Correct 95 ms 31272 KB Output is correct
25 Correct 227 ms 48952 KB Output is correct
26 Correct 317 ms 39404 KB Output is correct
27 Correct 422 ms 50704 KB Output is correct
28 Correct 581 ms 59188 KB Output is correct
29 Correct 563 ms 57524 KB Output is correct
30 Correct 478 ms 56296 KB Output is correct
31 Correct 421 ms 34384 KB Output is correct
32 Correct 395 ms 49732 KB Output is correct