Submission #238169

#	Time	Username	Problem	Language	Result	Execution time	Memory
238169		74TrAkToR	Tetris (COCI17_tetris)	C++17	80 / 80	5 ms	384 KiB

tetris

#include<bits/stdc++.h>

using namespace std;

char a[12][12];
int used[12][12];
int ans[5];
vector < pair < int, int > > go = {{-1, 0}, {1, 0}, {0, -1}, {0, 1}};
vector < pair < int, int > > Q;

map < vector < pair < int, int > >, int > t = {
    {{{0, 0}, {0, 1}, {1, 0}, {1, 1}}, 0},
    {{{0, 0}, {0, 1}, {0, 2}, {0, 3}}, 1},
    {{{0, 0}, {1, 0}, {2, 0}, {3, 0}}, 1},
    {{{0, 0}, {1, 0}, {0, 1}, {1, -1}}, 2},
    {{{0, 0}, {0, 1}, {1, 1}, {1, 2}}, 3},
    {{{0, 0}, {1, 0}, {1, 1}, {2, 1}}, 2},
    {{{0, 0}, {1, 0}, {1, -1}, {2, -1}}, 3}
};

void dfs(int i, int j) {
    Q.push_back({i, j});
    used[i][j] = 1;
    for (auto u : go) {
        i += u.first, j += u.second;
        if (used[i][j] == 0 && a[i][j] == a[i - u.first][j - u.second]) {
            dfs(i, j);
        }
        i -= u.first, j -= u.second;
    }
}

main() {
#ifdef HOME
    //freopen("input.txt", "r", stdin);
#endif // HOME
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n, m;
    cin >> n >> m;
    for (int i = 0; i <= 11; ++i) {
        for (int j = 0; j <= 11; ++j) a[i][j] = '.';
    }
    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= m; ++j) cin >> a[i][j];
    }
    for (int i = 1; i <= n; ++i) {
        for (int j = 1; j <= m; ++j) {
            if (a[i][j] != '.' && used[i][j] == 0) {
                Q = {};
                dfs(i, j);
                assert((int)Q.size() == 4);
                int oksik = 4;
                for (int pos = 3; pos >= 0; --pos) Q[pos].first -= Q[0].first, Q[pos].second -= Q[0].second;
                for (int pos = 0; pos < 24; ++pos) {
                    if (t.find(Q) != t.end()) oksik = t[Q];
                    if (pos != 23) next_permutation(Q.begin(), Q.end());
                }
                ans[oksik]++;
            }
        }
    }
    for (int i = 0; i <= 4; ++i) cout << ans[i] << '\n';
    return 0;
}

Compilation message (stderr)

tetris.cpp:33:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main() {
      ^

• Subtask 1: 80 / 80