oj.uz

Submission #379859

# Submission time Handle Problem Language Result Execution time Memory
379859 2021-03-19T14:37:05 Z nguyen31hoang08minh2003 Selotejp (COCI20_selotejp) C++14
110 / 110
 237 ms 98796 KB 
#include <bits/stdc++.h>
#define fore(i, a, b) for (ll i = (a), _b = (b); i < _b; ++i)
#define fort(i, a, b) for (ll i = (a), _b = (b); i <= _b; ++i)
#define ford(i, a, b) for (ll i = (a), _b = (b); i >= _b; --i)
#define fi first
#define se second
#define pb push_back
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define getbit(x, i) ((x) & (1 << (i)))
#define off(x, i) ((x) & (~(1 << (i))))
#define on(x, i) ((x) | (1 << (i)))
using namespace std;

template<class A, class B> bool maxi(A &a, const B &b) {return (a < b) ? (a = b, true):false;};
template<class A, class B> bool mini(A &a, const B &b) {return (a > b) ? (a = b, true):false;};

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<vii> vvii;

const int maxN = 1000, maxM = 10, inf = 1e9;

int n, m, dp[maxN][maxM][1 << maxM][2];
bool vis[maxN][maxM][1 << maxM][2];
char s[maxN][maxM];

int DP(const int r, const int c, const int vertical, const bool horizontal) {
    if (r >= n)
        return 0;
    if (!vis[r][c][vertical][horizontal]) {
        vis[r][c][vertical][horizontal] = true;
        dp[r][c][vertical][horizontal] = inf;
        if (c + 1 < m) {
            if (s[r][c] == '.')
                mini(dp[r][c][vertical][horizontal], DP(r, c + 1, off(vertical, c), false));
            else {
                if (getbit(vertical, c))
                    mini(dp[r][c][vertical][horizontal], DP(r, c + 1, vertical, false));
                else
                    mini(dp[r][c][vertical][horizontal], DP(r, c + 1, on(vertical, c), false) + 1);
                mini(dp[r][c][vertical][horizontal], DP(r, c + 1, off(vertical, c), true) + !horizontal);
            }
        } else {
            if (s[r][c] == '.')
                mini(dp[r][c][vertical][horizontal], DP(r + 1, 0, off(vertical, c), false));
            else {
                if (getbit(vertical, c))
                    mini(dp[r][c][vertical][horizontal], DP(r + 1, 0, vertical, false));
                else
                    mini(dp[r][c][vertical][horizontal], DP(r + 1, 0, on(vertical, c), false) + 1);
                mini(dp[r][c][vertical][horizontal], DP(r + 1, 0, off(vertical, c), false) + !horizontal);
            }
        }
    }
    return dp[r][c][vertical][horizontal];
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    cin >> n >> m;
    fore(i, 0, n)
        cin >> s[i];
    cout << DP(0, 0, 0, false) << '\n';
    return 0;
}

Subtask #1
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1900 KB Output is correct
2 Correct 47 ms 72684 KB Output is correct
3 Correct 41 ms 65004 KB Output is correct
4 Correct 47 ms 73836 KB Output is correct
5 Correct 57 ms 84972 KB Output is correct
6 Correct 58 ms 89196 KB Output is correct
7 Correct 62 ms 93804 KB Output is correct
8 Correct 45 ms 74604 KB Output is correct
9 Correct 52 ms 84076 KB Output is correct
10 Correct 82 ms 87660 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1260 KB Output is correct
2 Correct 2 ms 1388 KB Output is correct
3 Correct 1 ms 1260 KB Output is correct
4 Correct 2 ms 1388 KB Output is correct
5 Correct 1 ms 1004 KB Output is correct
6 Correct 1 ms 1132 KB Output is correct
7 Correct 1 ms 1132 KB Output is correct
8 Correct 1 ms 1260 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1900 KB Output is correct
2 Correct 47 ms 72684 KB Output is correct
3 Correct 41 ms 65004 KB Output is correct
4 Correct 47 ms 73836 KB Output is correct
5 Correct 57 ms 84972 KB Output is correct
6 Correct 58 ms 89196 KB Output is correct
7 Correct 62 ms 93804 KB Output is correct
8 Correct 45 ms 74604 KB Output is correct
9 Correct 52 ms 84076 KB Output is correct
10 Correct 82 ms 87660 KB Output is correct
11 Correct 1 ms 1260 KB Output is correct
12 Correct 2 ms 1388 KB Output is correct
13 Correct 1 ms 1260 KB Output is correct
14 Correct 2 ms 1388 KB Output is correct
15 Correct 1 ms 1004 KB Output is correct
16 Correct 1 ms 1132 KB Output is correct
17 Correct 1 ms 1132 KB Output is correct
18 Correct 1 ms 1260 KB Output is correct
19 Correct 22 ms 31852 KB Output is correct
20 Correct 50 ms 74348 KB Output is correct
21 Correct 62 ms 87916 KB Output is correct
22 Correct 37 ms 60780 KB Output is correct
23 Correct 43 ms 70124 KB Output is correct
24 Correct 52 ms 83052 KB Output is correct
25 Correct 70 ms 96364 KB Output is correct
26 Correct 115 ms 95212 KB Output is correct
27 Correct 167 ms 95596 KB Output is correct
28 Correct 237 ms 98796 KB Output is correct