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Submission #769769

# Submission time Handle Problem Language Result Execution time Memory
769769 2023-06-30T08:39:08 Z Ellinor Tracks in the Snow (BOI13_tracks) C++14
0 / 100
 2000 ms 1048576 KB 
#include <bits/stdc++.h>
using namespace std;
    
#define rep(i,a,b) for(int i = (a); i < (b); i++)
typedef long long ll;
    
int H, W;
vector<string> grid;
    
vector<vector<ll>> visited; // bitset ?
    
//priority_queue<vector<ll>> q;
vector<vector<pair<ll, ll>>> pq_vec;
    
void dfs(int hat, int wat, ll num)
{
    if (visited[hat][wat]>0) return;
    if (grid[hat][wat] == '.') return;
    visited[hat][wat] = num;
    
    char ch = grid[hat][wat];
    if (hat + 1 < H) {
        if (grid[hat + 1][wat] == ch) pq_vec[num].push_back({hat + 1, wat});
        else pq_vec[num + 1].push_back({hat + 1, wat});
    }
    if (wat + 1 < W) {
        if (grid[hat][wat + 1] == ch) pq_vec[num].push_back({hat, wat + 1});
        else pq_vec[num + 1].push_back({hat, wat + 1});
    }
    if (hat - 1 >= 0) {
        if (grid[hat - 1][wat] == ch) pq_vec[num].push_back({hat - 1, wat});
        else pq_vec[num + 1].push_back({hat - 1, wat});
    }
    if (wat - 1 >= 0) {
        if (grid[hat][wat - 1] == ch) pq_vec[num].push_back({hat, wat - 1});
        else pq_vec[num + 1].push_back({hat, wat - 1});
    }
}
    
int32_t main()
{
    cin>>H>>W;
    grid.assign(H, "");
    rep(i,0,H){
        cin>>grid[i];
    }
    
    visited.assign(H, vector<ll>(W, -1));
    //q.push({-1,0,0});
    pq_vec.assign(H*W + 1, {});
    pq_vec[1].push_back({0,0});

    ll i = 1;
    while(i < pq_vec.size())
    {
        ll j = 0;
        while (j < pq_vec[i].size())
        {
            pair<ll,ll> x = pq_vec[i][j];
            dfs(x.first, x.second, i);
            j++;
        }
        i++;
    }

    assert(1 == 0);
    
    ll ans = 1;
    rep(i,0,H){
        rep(j,0,W){
            ans = max(ans, visited[i][j]);
        }
    }
    cout << ans;
}

Compilation message

tracks.cpp: In function 'int32_t main()':
tracks.cpp:54:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::vector<std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   54 |     while(i < pq_vec.size())
      |           ~~^~~~~~~~~~~~~~~
tracks.cpp:57:18: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |         while (j < pq_vec[i].size())
      |                ~~^~~~~~~~~~~~~~~~~~

Subtask #1
0 / 30.0

# Verdict Execution time Memory Grader output
1 Runtime error 51 ms 47208 KB Execution killed with signal 6
2 Runtime error 1 ms 468 KB Execution killed with signal 6
3 Runtime error 1 ms 724 KB Execution killed with signal 6
4 Runtime error 36 ms 33728 KB Execution killed with signal 6
5 Runtime error 9 ms 9108 KB Execution killed with signal 6
6 Runtime error 1 ms 424 KB Execution killed with signal 6
7 Runtime error 1 ms 852 KB Execution killed with signal 6
8 Runtime error 2 ms 1492 KB Execution killed with signal 6
9 Runtime error 2 ms 1332 KB Execution killed with signal 6
10 Runtime error 9 ms 8836 KB Execution killed with signal 6
11 Runtime error 10 ms 11628 KB Execution killed with signal 6
12 Runtime error 18 ms 16976 KB Execution killed with signal 6
13 Runtime error 9 ms 9220 KB Execution killed with signal 6
14 Runtime error 9 ms 9140 KB Execution killed with signal 6
15 Runtime error 43 ms 41204 KB Execution killed with signal 6
16 Runtime error 51 ms 47240 KB Execution killed with signal 6
17 Runtime error 33 ms 30892 KB Execution killed with signal 6
18 Runtime error 34 ms 33692 KB Execution killed with signal 6

Subtask #2
0 / 70.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 6228 KB Execution killed with signal 6
2 Runtime error 218 ms 192036 KB Execution killed with signal 6
3 Runtime error 1496 ms 1048576 KB Execution killed with signal 6
4 Runtime error 357 ms 333296 KB Execution killed with signal 6
5 Runtime error 1200 ms 1048576 KB Execution killed with signal 6
6 Runtime error 1356 ms 1048576 KB Execution killed with signal 9
7 Runtime error 7 ms 5620 KB Execution killed with signal 6
8 Runtime error 6 ms 6228 KB Execution killed with signal 6
9 Runtime error 9 ms 8804 KB Execution killed with signal 6
10 Runtime error 3 ms 3852 KB Execution killed with signal 6
11 Runtime error 5 ms 5076 KB Execution killed with signal 6
12 Runtime error 4 ms 3796 KB Execution killed with signal 6
13 Runtime error 217 ms 191412 KB Execution killed with signal 6
14 Runtime error 128 ms 113368 KB Execution killed with signal 6
15 Runtime error 116 ms 118332 KB Execution killed with signal 6
16 Runtime error 100 ms 91560 KB Execution killed with signal 6
17 Runtime error 571 ms 491924 KB Execution killed with signal 6
18 Runtime error 481 ms 464744 KB Execution killed with signal 6
19 Runtime error 346 ms 331464 KB Execution killed with signal 6
20 Runtime error 366 ms 394500 KB Execution killed with signal 6
21 Runtime error 947 ms 1030020 KB Execution killed with signal 6
22 Runtime error 1132 ms 1048576 KB Execution killed with signal 6
23 Runtime error 1067 ms 916988 KB Execution killed with signal 6
24 Runtime error 985 ms 1048576 KB Execution killed with signal 6
25 Runtime error 1658 ms 1048576 KB Execution killed with signal 6
26 Runtime error 1213 ms 1048576 KB Execution killed with signal 9
27 Runtime error 914 ms 1048576 KB Execution killed with signal 9
28 Runtime error 1461 ms 1048576 KB Execution killed with signal 9
29 Runtime error 1443 ms 1048576 KB Execution killed with signal 9
30 Runtime error 1517 ms 1048576 KB Execution killed with signal 9
31 Execution timed out 2051 ms 1048576 KB Time limit exceeded
32 Runtime error 1000 ms 1048576 KB Execution killed with signal 9