oj.uz

Submission #827080

# Submission time Handle Problem Language Result Execution time Memory
827080 2023-08-16T08:36:26 Z Alora Selotejp (COCI20_selotejp) C++17
110 / 110
 29 ms 356 KB 
#include <bits/stdc++.h>
#define name "cownav"
#define fi(i,a,b) for(int i = a; i <= b; i++)
#define fid(i,a,b) for(int i = a; i >= b; i--)
#define ll long long
#define f first
#define se second
#define pii pair<int, int>
#define getbit(i, j) ((i >> j) & 1)
#define pb push_back
#define all(v) v.begin(), v.end()
#define maxn 255
const int M = 1e9 + 7;
using namespace std;
int m, n, full, pre[1 << 10], dp[1 << 10];
char s[1003][11];

void sol(){
    full = (1 << m) - 1;
    memset(pre, 0x3f, sizeof(pre));
    pre[0] = 0;
    fi(j, 0, n - 1){
        fi(i, 0, m - 1){
            fi(tt, 0, full){
                // if i-th bit of tt = 0 -> cell(j, i) is shut by a horizontal tape
                // if i-th bit of tt = 1 -> cell(j, i) is shut by a vertical tape
                if(s[j][i] == '.'){
                    if(getbit(tt, i)) dp[tt] = 1e9;
                    else dp[tt] = min(pre[tt], pre[tt^(1 << i)]);
                    continue;
                }
                if(getbit(tt, i)) dp[tt] = min(pre[tt], pre[tt^(1 << i)] + 1);
                else{
                    dp[tt] = min(pre[tt], pre[tt^(1 << i)]);
                    if(i == 0 || s[j][i - 1] == '.' || getbit(tt, i - 1)) dp[tt]++;
                }
            }
            swap(pre, dp);
        }
    }
    int res = 1e9;
    fi(tt, 0, full) res = min(res, pre[tt]);
    cout << res;
}

int main(){
	ios_base::sync_with_stdio(0);
	cin.tie(NULL);
	//freopen(name".in","r",stdin);
	//freopen(name".out","w",stdout);
    cin >> n >> m;
    fi(i, 0, n - 1)
        fi(j, 0, m - 1) cin >> s[i][j];
    sol();
	return 0;
}

Compilation message

Main.cpp: In function 'void sol()':
Main.cpp:35:69: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   35 |                     if(i == 0 || s[j][i - 1] == '.' || getbit(tt, i - 1)) dp[tt]++;
      |                                                                   ~~^~~
Main.cpp:9:29: note: in definition of macro 'getbit'
    9 | #define getbit(i, j) ((i >> j) & 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 348 KB Output is correct
3 Correct 8 ms 348 KB Output is correct
4 Correct 12 ms 348 KB Output is correct
5 Correct 27 ms 352 KB Output is correct
6 Correct 28 ms 332 KB Output is correct
7 Correct 28 ms 332 KB Output is correct
8 Correct 20 ms 340 KB Output is correct
9 Correct 29 ms 340 KB Output is correct
10 Correct 25 ms 340 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 324 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 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 348 KB Output is correct
3 Correct 8 ms 348 KB Output is correct
4 Correct 12 ms 348 KB Output is correct
5 Correct 27 ms 352 KB Output is correct
6 Correct 28 ms 332 KB Output is correct
7 Correct 28 ms 332 KB Output is correct
8 Correct 20 ms 340 KB Output is correct
9 Correct 29 ms 340 KB Output is correct
10 Correct 25 ms 340 KB Output is correct
11 Correct 1 ms 324 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 4 ms 340 KB Output is correct
20 Correct 8 ms 340 KB Output is correct
21 Correct 13 ms 328 KB Output is correct
22 Correct 21 ms 352 KB Output is correct
23 Correct 19 ms 356 KB Output is correct
24 Correct 19 ms 340 KB Output is correct
25 Correct 21 ms 348 KB Output is correct
26 Correct 22 ms 348 KB Output is correct
27 Correct 23 ms 352 KB Output is correct
28 Correct 23 ms 328 KB Output is correct