oj.uz

Submission #786930

# Submission time Handle Problem Language Result Execution time Memory
786930 2023-07-18T14:57:32 Z MCi Tracks in the Snow (BOI13_tracks) C++14
1.66667 / 100
 827 ms 436396 KB 
#include<bits/stdc++.h>
#define file "D:\\CWistor\\code"
using namespace std; 

#define ll long long
#define MAX 100100
#define fi first
#define se second
#define ull unsigned long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define vi vector<int>
#define vl vector<long long>
#define mem(a, b) memset((a), (b), sizeof((a)))
#define all(c) (c).begin(), (c).end()
const int MOD = 1e9 + 7;
const int N = 2e6 + 6;
const ll M = (ll)1e18 + 7LL;
const int INF = 1e9 + 7;
ll oo = 1e17 + 5;
ll n, m, a[5005][5005];
int dx[] = {1, -1, 0, 0};
int dy[] = {0, 0, 1, -1};
ll cnt = 0;
void run_with_file()
{
    if (fopen(file".inp", "r"))
    {
        freopen(file".inp", "r", stdin);
        freopen(file".out", "w", stdout);
    }
}
void inp(){
    cin >> n >> m;
    for(int i = 1; i <= n; ++i){
        for(int j = 1; j <= m; ++j){
            char x;
            cin >> x;
            if(x == '.') a[i][j] = 1;
            else a[i][j] = 0;
        }
    }
}
void dfs(int i, int j){
    a[i][j] = 0;
    for(int k = 0; k < 4; ++k){
        int i1 = i + dx[k];
        int j1 = j + dy[k];
        if(i1 >= 1 && i1 <= n && j1 >= 1 && j1 <= m && a[i1][j1] == 1){
            a[i1][j1] = 0;
            dfs(i1, j1);
        }
    }
}
int main()
{
    cin.tie(0)->sync_with_stdio(0);
    run_with_file(); 
    inp();
    if(n == 1 && m == 1){
        if(a[n][m] == 1) cout << 1;
        else cout << 0;
        exit(0);
    }
    for(int i = 1; i <= n; ++i){
        for(int j = 1; j <= m; ++j){
            if(a[i][j] == 1){
                cnt++;
                dfs(i, j);
            }
        }
    }
    cout << cnt;
}

Compilation message

tracks.cpp: In function 'void run_with_file()':
tracks.cpp:29:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   29 |         freopen(file".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
tracks.cpp:30:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |         freopen(file".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
1.66666666667 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 4436 KB Output isn't correct
2 Incorrect 1 ms 340 KB Output isn't correct
3 Incorrect 1 ms 468 KB Output isn't correct
4 Incorrect 3 ms 3584 KB Output isn't correct
5 Incorrect 3 ms 2772 KB Output isn't correct
6 Incorrect 1 ms 340 KB Output isn't correct
7 Incorrect 1 ms 468 KB Output isn't correct
8 Incorrect 1 ms 588 KB Output isn't correct
9 Correct 1 ms 852 KB Output is correct
10 Incorrect 2 ms 2004 KB Output isn't correct
11 Incorrect 1 ms 1428 KB Output isn't correct
12 Incorrect 2 ms 2260 KB Output isn't correct
13 Incorrect 3 ms 2772 KB Output isn't correct
14 Incorrect 3 ms 2772 KB Output isn't correct
15 Incorrect 5 ms 4564 KB Output isn't correct
16 Incorrect 4 ms 4436 KB Output isn't correct
17 Incorrect 6 ms 4952 KB Output isn't correct
18 Incorrect 3 ms 3588 KB Output isn't correct

Subtask #2
0 / 70.0

# Verdict Execution time Memory Grader output
1 Incorrect 7 ms 16464 KB Output isn't correct
2 Incorrect 34 ms 19940 KB Output isn't correct
3 Incorrect 349 ms 155060 KB Output isn't correct
4 Incorrect 100 ms 50460 KB Output isn't correct
5 Incorrect 158 ms 85776 KB Output isn't correct
6 Incorrect 193 ms 143876 KB Output isn't correct
7 Incorrect 8 ms 17236 KB Output isn't correct
8 Incorrect 7 ms 16468 KB Output isn't correct
9 Incorrect 2 ms 1108 KB Output isn't correct
10 Incorrect 2 ms 2004 KB Output isn't correct
11 Incorrect 8 ms 17308 KB Output isn't correct
12 Incorrect 1 ms 1108 KB Output isn't correct
13 Incorrect 31 ms 19988 KB Output isn't correct
14 Incorrect 19 ms 12724 KB Output isn't correct
15 Incorrect 36 ms 31040 KB Output isn't correct
16 Incorrect 12 ms 8276 KB Output isn't correct
17 Incorrect 81 ms 44360 KB Output isn't correct
18 Incorrect 196 ms 103380 KB Output isn't correct
19 Incorrect 102 ms 50420 KB Output isn't correct
20 Incorrect 80 ms 41156 KB Output isn't correct
21 Incorrect 209 ms 95596 KB Output isn't correct
22 Incorrect 149 ms 85848 KB Output isn't correct
23 Incorrect 152 ms 75876 KB Output isn't correct
24 Incorrect 175 ms 87368 KB Output isn't correct
25 Incorrect 827 ms 436396 KB Output isn't correct
26 Incorrect 176 ms 110504 KB Output isn't correct
27 Incorrect 212 ms 141764 KB Output isn't correct
28 Incorrect 202 ms 141772 KB Output isn't correct
29 Incorrect 214 ms 141800 KB Output isn't correct
30 Incorrect 202 ms 138916 KB Output isn't correct
31 Incorrect 134 ms 93644 KB Output isn't correct
32 Incorrect 269 ms 150256 KB Output isn't correct