oj.uz

Submission #706885

# Submission time Handle Problem Language Result Execution time Memory
706885 2023-03-08T04:29:32 Z YugiHacker Selotejp (COCI20_selotejp) C++14
110 / 110
 21 ms 352 KB 
/*
	www.youtube.com/YugiHackerChannel
	oj.vnoi.info/user/YugiHackerKhongCopCode
*/
#include<bits/stdc++.h>
#define el cout<<"\n"
#define f0(i,n) for(int i=0;i<n;++i)
#define f1(i,n) for(int i=1;i<=n;++i)
#define maxn
#define bit(n,i) ((n>>i)&1)
using namespace std;
int n, m;
char a[1003][11];
vector <int> f, pre;
main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> m;
    f0 (i, n) f0 (j, m) cin >> a[i][j];
    f.resize(1 << m), pre.resize(1 << m, 1e5);
    pre[0] = 0;
    f0 (i, n) f0 (j, m)
    {
        f0 (mask, 1 << m)
        {
            if (bit(mask, j))
            {
                if (a[i][j] == '.') f[mask] = 1e5; // ?
                else f[mask] = min(pre[mask], pre[mask ^ (1 << j)] + 1);
                // #
                // v
                // #
            }
            else
            {
                if (a[i][j] == '.')
                    f[mask] = min(pre[mask], pre[mask ^ (1 << j)]);
                else if (j && a[i][j] == '#' && a[i][j-1] == '#' && bit(mask, j-1) == 0)
                    f[mask] = min(pre[mask], pre[mask ^ (1 << j)]); // # -> #
                else
                    f[mask] = min(pre[mask], pre[mask ^ (1 << j)]) + 1;
            }
        }
        pre = f;
    }
    cout << *min_element(pre.begin(), pre.end());
}
/*
5 8
#.##..#.
....###.
#.#.##..
#.#..#.#
##..####
*/

Compilation message

Main.cpp:15:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   15 | main()
      | ^~~~
Main.cpp: In function 'int main()':
Main.cpp:40:80: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   40 |                 else if (j && a[i][j] == '#' && a[i][j-1] == '#' && bit(mask, j-1) == 0)
      |                                                                               ~^~
Main.cpp:10:23: note: in definition of macro 'bit'
   10 | #define bit(n,i) ((n>>i)&1)
      |                       ^

Subtask #1
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 18 ms 344 KB Output is correct
3 Correct 4 ms 340 KB Output is correct
4 Correct 8 ms 340 KB Output is correct
5 Correct 18 ms 340 KB Output is correct
6 Correct 18 ms 336 KB Output is correct
7 Correct 18 ms 352 KB Output is correct
8 Correct 17 ms 340 KB Output is correct
9 Correct 17 ms 340 KB Output is correct
10 Correct 20 ms 332 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 324 KB Output is correct
3 Correct 1 ms 324 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 324 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 320 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 18 ms 344 KB Output is correct
3 Correct 4 ms 340 KB Output is correct
4 Correct 8 ms 340 KB Output is correct
5 Correct 18 ms 340 KB Output is correct
6 Correct 18 ms 336 KB Output is correct
7 Correct 18 ms 352 KB Output is correct
8 Correct 17 ms 340 KB Output is correct
9 Correct 17 ms 340 KB Output is correct
10 Correct 20 ms 332 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 324 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 324 KB Output is correct
16 Correct 1 ms 320 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 320 KB Output is correct
19 Correct 1 ms 324 KB Output is correct
20 Correct 5 ms 336 KB Output is correct
21 Correct 9 ms 336 KB Output is correct
22 Correct 17 ms 348 KB Output is correct
23 Correct 18 ms 340 KB Output is correct
24 Correct 17 ms 340 KB Output is correct
25 Correct 18 ms 340 KB Output is correct
26 Correct 19 ms 352 KB Output is correct
27 Correct 21 ms 340 KB Output is correct
28 Correct 21 ms 340 KB Output is correct