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Submission #220732

# Submission time Handle Problem Language Result Execution time Memory
220732 2020-04-08T13:41:30 Z NONAME Skandi (COCI20_skandi) C++17
110 / 110
 4276 ms 19064 KB 
#include <bits/stdc++.h>
#include <time.h>
//#include <random>
//#ifndef _LOCAL
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")
//#pragma GCC optimize("unroll-loops")
//#endif
#define sz(x) int(x.size())
#define in(x) freopen(x, "r", stdin)
#define out(x) freopen(x, "w", stdout)
#define N 100500
#define oo ll(1e16)
#define pii pair <int, int>
#define pll pair <ll, ll>
#define ft first
#define sd second
#define pb push_back
#define ppb pop_back
#define mp make_pair
#define el '\n'
#define elf endl
#define base ll(1e9 + 7)
#define re return
#define nins 4294967295
using namespace std;
typedef long long ll;
typedef long double ld;

//mt19937 rnd(0);

pii ver_co[501 * 501], hor_co[501 * 501];
int n, m, ver, hor;
vector <int> mV, mH, g[501 * 501], mkV, mkH;
vector <char> mk;
map <pii, int> ver_id, hor_id;
string s[501];

bool try_kuhn(int v) {
    if (mk[v])
        return 0;
    mk[v] = 1;

    for (int i = 0; i < sz(g[v]); i++) {
        int to = g[v][i];

        if (mH[to] == -1 || try_kuhn(mH[to])) {
            mH[to] = v;
            return 1;
        }
    }

    return 0;
}

void dfs(int v) {
    mkV[v] = 1;
    for (int i = 0; i < sz(g[v]); i++) {
        int to = g[v][i];
        if (mkH[to])
            continue;
        mkH[to] = 1;
        dfs(mH[to]);
    }
}

void solve() {
    cin >> n >> m;
    for (int i = 0; i < n; i++)
        cin >> s[i];

    for (int i = 0; i < n; i++)
    for (int j = 0; j < m; j++) {
        if (s[i][j] == '0')
            continue;

        if (i + 1 < n && s[i + 1][j] == '0') {
            ver_id[{i, j}] = ver;
            ver_co[ver++] = {i + 1, j + 1};
        }

        if (j + 1 < m && s[i][j + 1] == '0') {
            hor_id[{i, j}] = hor;
            hor_co[hor++] = {i + 1, j + 1};
        }
    }

    for (int i = 0; i < n; i++)
    for (int j = 0; j < m; j++) {
        if (s[i][j] == '1')
            continue;

        int _i = i, _j = j;

        while (s[_i][j] == '0') _i--;

        while (s[i][_j] == '0') _j--;

        g[ver_id[{_i, j}]].pb(hor_id[{i, _j}]);
    }

    int rs = 0;
    mV.assign(ver, -1);
    mH.assign(hor, -1);
    for (int i = 0; i < ver; i++) {
        mk.assign(ver, 0);

        rs += try_kuhn(i);
    }

    cout << rs << el;

    mkV.assign(ver, 0);
    mkH.assign(hor, 0);

    for (int i = 0; i < hor; i++)
        if (mH[i] != -1)
            mV[mH[i]] = i;

    for (int i = 0; i < ver; i++) {
        if (mV[i] != -1)
            continue;

        dfs(i);
    }

    for (int i = 0; i < ver; i++)
        if (!mkV[i])
            cout << ver_co[i].ft << ' ' << ver_co[i].sd << " DOLJE" << el;

    for (int i = 0; i < hor; i++)
        if (mkH[i])
            cout << hor_co[i].ft << ' ' << hor_co[i].sd << " DESNO" << el;
}

int main() {
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    #ifdef _LOCAL
        in("input.txt");

        int t = 1;
//        cin >> t;
        for (int i = 1; i <= t; i++) {
            cout << "Test #" << i << elf;

            clock_t start_time = clock();

            solve();

            cerr.precision(4); cerr << fixed;
            cerr << elf;
            cerr << "Time :: " << ld(clock() - start_time) / CLOCKS_PER_SEC << elf;

            cout << elf;
        }
    #else
        int t = 1;
//        cin >> t;

        while (t--) {
            solve();
            cout << el;
        }
    #endif
}

Subtask #1
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6272 KB Correct.
2 Correct 8 ms 6272 KB Correct.
3 Correct 8 ms 6272 KB Correct.
4 Correct 8 ms 6272 KB Correct.
5 Correct 10 ms 6272 KB Correct.
6 Correct 8 ms 6272 KB Correct.
7 Correct 8 ms 6272 KB Correct.
8 Correct 8 ms 6272 KB Correct.
9 Correct 8 ms 6272 KB Correct.
10 Correct 8 ms 6272 KB Correct.
11 Correct 9 ms 6272 KB Correct.
12 Correct 8 ms 6272 KB Correct.
13 Correct 10 ms 6272 KB Correct.
14 Correct 8 ms 6272 KB Correct.
15 Correct 8 ms 6272 KB Correct.
16 Correct 8 ms 6272 KB Correct.
17 Correct 9 ms 6196 KB Correct.
18 Correct 8 ms 6272 KB Correct.
19 Correct 8 ms 6272 KB Correct.
20 Correct 8 ms 6272 KB Correct.
21 Correct 8 ms 6272 KB Correct.
22 Correct 8 ms 6272 KB Correct.
23 Correct 11 ms 6272 KB Correct.

Subtask #2
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6272 KB Correct.
2 Correct 8 ms 6272 KB Correct.
3 Correct 9 ms 6400 KB Correct.
4 Correct 8 ms 6272 KB Correct.
5 Correct 9 ms 6272 KB Correct.
6 Correct 9 ms 6272 KB Correct.
7 Correct 8 ms 6272 KB Correct.
8 Correct 10 ms 6400 KB Correct.
9 Correct 9 ms 6400 KB Correct.
10 Correct 9 ms 6528 KB Correct.
11 Correct 12 ms 6528 KB Correct.
12 Correct 12 ms 6528 KB Correct.
13 Correct 9 ms 6528 KB Correct.
14 Correct 10 ms 6528 KB Correct.
15 Correct 9 ms 6528 KB Correct.
16 Correct 10 ms 6528 KB Correct.
17 Correct 9 ms 6528 KB Correct.
18 Correct 12 ms 6400 KB Correct.
19 Correct 9 ms 6528 KB Correct.
20 Correct 10 ms 6400 KB Correct.
21 Correct 9 ms 6528 KB Correct.
22 Correct 10 ms 6528 KB Correct.
23 Correct 11 ms 6528 KB Correct.
24 Correct 9 ms 6400 KB Correct.
25 Correct 13 ms 6504 KB Correct.
26 Correct 9 ms 6528 KB Correct.

Subtask #3
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 6272 KB Correct.
2 Correct 8 ms 6272 KB Correct.
3 Correct 8 ms 6272 KB Correct.
4 Correct 8 ms 6272 KB Correct.
5 Correct 10 ms 6272 KB Correct.
6 Correct 8 ms 6272 KB Correct.
7 Correct 8 ms 6272 KB Correct.
8 Correct 8 ms 6272 KB Correct.
9 Correct 8 ms 6272 KB Correct.
10 Correct 8 ms 6272 KB Correct.
11 Correct 9 ms 6272 KB Correct.
12 Correct 8 ms 6272 KB Correct.
13 Correct 10 ms 6272 KB Correct.
14 Correct 8 ms 6272 KB Correct.
15 Correct 8 ms 6272 KB Correct.
16 Correct 8 ms 6272 KB Correct.
17 Correct 9 ms 6196 KB Correct.
18 Correct 8 ms 6272 KB Correct.
19 Correct 8 ms 6272 KB Correct.
20 Correct 8 ms 6272 KB Correct.
21 Correct 8 ms 6272 KB Correct.
22 Correct 8 ms 6272 KB Correct.
23 Correct 11 ms 6272 KB Correct.
24 Correct 8 ms 6272 KB Correct.
25 Correct 8 ms 6272 KB Correct.
26 Correct 9 ms 6400 KB Correct.
27 Correct 8 ms 6272 KB Correct.
28 Correct 9 ms 6272 KB Correct.
29 Correct 9 ms 6272 KB Correct.
30 Correct 8 ms 6272 KB Correct.
31 Correct 10 ms 6400 KB Correct.
32 Correct 9 ms 6400 KB Correct.
33 Correct 9 ms 6528 KB Correct.
34 Correct 12 ms 6528 KB Correct.
35 Correct 12 ms 6528 KB Correct.
36 Correct 9 ms 6528 KB Correct.
37 Correct 10 ms 6528 KB Correct.
38 Correct 9 ms 6528 KB Correct.
39 Correct 10 ms 6528 KB Correct.
40 Correct 9 ms 6528 KB Correct.
41 Correct 12 ms 6400 KB Correct.
42 Correct 9 ms 6528 KB Correct.
43 Correct 10 ms 6400 KB Correct.
44 Correct 9 ms 6528 KB Correct.
45 Correct 10 ms 6528 KB Correct.
46 Correct 11 ms 6528 KB Correct.
47 Correct 9 ms 6400 KB Correct.
48 Correct 13 ms 6504 KB Correct.
49 Correct 9 ms 6528 KB Correct.
50 Correct 150 ms 16892 KB Correct.
51 Correct 4276 ms 10600 KB Correct.
52 Correct 180 ms 17400 KB Correct.
53 Correct 172 ms 16888 KB Correct.
54 Correct 146 ms 15740 KB Correct.
55 Correct 192 ms 18388 KB Correct.
56 Correct 164 ms 17656 KB Correct.
57 Correct 167 ms 17400 KB Correct.
58 Correct 2742 ms 9924 KB Correct.
59 Correct 141 ms 16052 KB Correct.
60 Correct 162 ms 17528 KB Correct.
61 Correct 149 ms 14456 KB Correct.
62 Correct 176 ms 17656 KB Correct.
63 Correct 164 ms 17784 KB Correct.
64 Correct 198 ms 7672 KB Correct.
65 Correct 163 ms 17656 KB Correct.
66 Correct 147 ms 15736 KB Correct.
67 Correct 177 ms 15864 KB Correct.
68 Correct 192 ms 18296 KB Correct.
69 Correct 164 ms 17120 KB Correct.
70 Correct 159 ms 17272 KB Correct.
71 Correct 190 ms 17912 KB Correct.
72 Correct 170 ms 18428 KB Correct.
73 Correct 194 ms 18680 KB Correct.
74 Correct 193 ms 17660 KB Correct.
75 Correct 197 ms 19064 KB Correct.