Submission #475593

#	Time	Username	Problem	Language	Result	Execution time	Memory
475593		abc864197532	Selotejp (COCI20_selotejp)	C++17	35 / 110	116 ms	356 KiB

Main

/*
 *   ##   #####   ####      ####  #    #  ####
 *  #  #  #    # #    #    #    # #    # #    #
 * #    # #####  #         #    # #    # #    #
 * ###### #    # #         #    # # ## # #    #
 * #    # #    # #    #    #    # ##  ## #    #
 * #    # #####   ####      ####  #    #  ####
 */
#include <bits/stdc++.h>
using namespace std;
#define lli long long int
#define mp make_pair
#define pb push_back
#define eb emplace_back
#define pii pair <int, int>
#define X first
#define Y second
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define info() cout << __PRETTY_FUNCTION__ << ": " << __LINE__ << endl
void abc() {cout << endl;}
template <typename T, typename ...U> void abc(T a, U ...b) {
    cout << a << ' ', abc(b...);
}
template <typename T> void printv(T l, T r) {
    for (; l != r; ++l) cout << *l << " \n"[l + 1 == r];
}
template <typename A, typename B> istream& operator >> (istream& o, pair<A, B> &a) {
    return o >> a.X >> a.Y;
}
template <typename A, typename B> ostream& operator << (ostream& o, pair<A, B> a) {
    return o << '(' << a.X << ", " << a.Y << ')';
}
template <typename T> ostream& operator << (ostream& o, vector<T> a) {
    bool is = false;
    if (a.empty()) return o << "{}";
    for (T i : a) {o << (is ? ' ' : '{'), is = true, o << i;}
    return o << '}';
}
template <typename T> struct vv : vector <vector <T>> {
    vv(int n, int m, T v) : vector <vector <T>> (n, vector <T>(m, v)) {}
    vv() {}
};
template <typename T> struct vvv : vector <vv <T>> {
    vvv(int n, int m, int k, T v) : vector <vv <T>> (n, vv <T>(m, k, v)) {}
    vvv() {}
};
#ifdef Doludu
#define test(args...) info(), abc("[" + string(#args) + "]", args)
#define owo freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout); 
#else
#define test(args...) void(0)
#define owo ios::sync_with_stdio(false); cin.tie(0)
#endif
const int mod = 998244353, N = 300001, logN = 20, K = 111;

int main () {
    owo;
    int n, m;
    cin >> n >> m;
    vector <string> t(n);
    for (int i = 0; i < n; ++i)
        cin >> t[i];
    vector <int> pre(1 << m + 1, 1 << 30), dp;
    pre[0] = 0;
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < m; ++j) {
            dp.assign(1 << m + 1, 1 << 30);
            for (int s = 0; s < 1 << m + 1; ++s) {
                if (t[i][j] == '#') {
                    if (s >> m & 1 || s >> j & 1)
                        dp[s] = min(dp[s], pre[s]);
                    else {
                        dp[s ^ (1 << m)] = min(dp[s ^ (1 << m)], pre[s] + 1);
                        dp[s ^ (1 << j)] = min(dp[s ^ (1 << j)], pre[s] + 1);
                    }
                } else {
                    int nxt = s;
                    if (s >> m & 1)
                        nxt ^= 1 << m;
                    if (s >> j & 1)
                        nxt ^= 1 << j;
                    dp[nxt] = min(dp[nxt], pre[s]);
                }
            }
            pre = dp;
        }
        for (int s = 0; s < 1 << m; ++s)
            pre[s] = min(pre[s], pre[s ^ (1 << m)]), pre[s ^ (1 << m)] = 1 << 30;
    }
    int ans = 1 << 30;
    for (int i : pre)
        ans = min(ans, i);
    cout << ans << endl;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:64:29: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   64 |     vector <int> pre(1 << m + 1, 1 << 30), dp;
      |                           ~~^~~
Main.cpp:68:30: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   68 |             dp.assign(1 << m + 1, 1 << 30);
      |                            ~~^~~
Main.cpp:69:40: warning: suggest parentheses around '+' inside '<<' [-Wparentheses]
   69 |             for (int s = 0; s < 1 << m + 1; ++s) {
      |                                      ~~^~~

• Subtask 1: 35 / 35
• Subtask 2: 0 / 35
• Subtask 3: 0 / 40