oj.uz

Submission #465531

# Submission time Handle Problem Language Result Execution time Memory
465531 2021-08-16T09:52:04 Z TheScrasse Selotejp (COCI20_selotejp) C++17
110 / 110
 375 ms 8420 KB 
#include <bits/stdc++.h>
using namespace std;

#define nl "\n"
#define nf endl
#define ll long long
#define pb push_back
#define _ << ' ' <<

#define INF (ll)1e18
#define mod 998244353
#define maxn 1010
#define maxm 11
#define maxb 1034

ll i, i1, j, k, k1, t, n, m, res, flag[10], a, b;
ll mk0, mk1, mk2, mka, dp[maxn][maxb], x;
char mt[maxn][maxm];

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);

    #if !ONLINE_JUDGE && !EVAL
        ifstream cin("input.txt");
        ofstream cout("output.txt");
    #endif

    cin >> n >> m;
    for (i = 1; i <= n; i++) {
        for (j = 0; j <= m - 1; j++) {
            cin >> mt[i][j];
        }
    }

    for (i = 0; i <= n; i++) {
        for (mk1 = 0; mk1 < (1 << m); mk1++) {
            dp[i][mk1] = INF;
        }
    }
    dp[0][0] = 0;

    for (i = 1; i <= n; i++) {
        mk0 = 0;
        for (j = 0; j <= m - 1; j++) {
            if (mt[i][j] == '#') mk0 += (1 << j);
        }

        for (mk1 = mk0;; mk1 = (mk1 - 1) & mk0) {
            mka = (mk0 & (~mk1)); k = 0;
            for (j = 0; j <= m - 1; j++) {
                if (((mka >> j) & 1) == 0) continue;
                if (j == 0 || ((mka >> (j - 1)) & 1) == 0) k++;
            }

            for (mk2 = mk1;; mk2 = (mk2 - 1) & mk1) {
                x = __builtin_popcountll(mk1) - __builtin_popcountll(mk1 & mk2);
                x += dp[i - 1][mk2];
                dp[i][mk1] = min(dp[i][mk1], k + x);
                if (mk2 == 0) break;
            }
            if (mk1 == 0) break;
        }

        for (mk1 = mk0;; mk1 = (mk1 - 1) & mk0) {
            for (mk2 = mk1;; mk2 = (mk2 - 1) & mk1) {
                dp[i][mk2] = min(dp[i][mk2], dp[i][mk1]);
                if (mk2 == 0) break;
            }
            if (mk1 == 0) break;
        }
    }

    /* for (i = 0; i <= n; i++) {
        for (mk1 = 0; mk1 < (1 << m); mk1++) {
            cout << dp[i][mk1] << ' ';
        }
        cout << nl;
    } */

    cout << dp[n][0] << nl;

    return 0;
}

Subtask #1
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 6 ms 7756 KB Output is correct
3 Correct 4 ms 5836 KB Output is correct
4 Correct 6 ms 8108 KB Output is correct
5 Correct 7 ms 8308 KB Output is correct
6 Correct 8 ms 8340 KB Output is correct
7 Correct 7 ms 8140 KB Output is correct
8 Correct 5 ms 7756 KB Output is correct
9 Correct 6 ms 7756 KB Output is correct
10 Correct 203 ms 8420 KB Output is correct

Subtask #2
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 332 KB Output is correct

Subtask #3
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 6 ms 7756 KB Output is correct
3 Correct 4 ms 5836 KB Output is correct
4 Correct 6 ms 8108 KB Output is correct
5 Correct 7 ms 8308 KB Output is correct
6 Correct 8 ms 8340 KB Output is correct
7 Correct 7 ms 8140 KB Output is correct
8 Correct 5 ms 7756 KB Output is correct
9 Correct 6 ms 7756 KB Output is correct
10 Correct 203 ms 8420 KB Output is correct
11 Correct 1 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 1 ms 332 KB Output is correct
14 Correct 1 ms 320 KB Output is correct
15 Correct 1 ms 332 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 3 ms 4428 KB Output is correct
20 Correct 6 ms 6220 KB Output is correct
21 Correct 10 ms 8244 KB Output is correct
22 Correct 5 ms 8136 KB Output is correct
23 Correct 5 ms 8140 KB Output is correct
24 Correct 6 ms 8012 KB Output is correct
25 Correct 14 ms 8268 KB Output is correct
26 Correct 72 ms 7932 KB Output is correct
27 Correct 196 ms 7948 KB Output is correct
28 Correct 375 ms 8212 KB Output is correct