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답안 #377809

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
377809 2021-03-15T07:29:23 Z Vimmer Sateliti (COCI20_satellti) C++14
110 / 110
 642 ms 54956 KB 
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

//#pragma GCC optimize("unroll-loops")
//#pragma GCC optimize("-O3")
//#pragma GCC optimize("Ofast")

#define N 2051
#define NN 1005000
#define PB push_back
#define M ll(1e9 + 7)
#define all(x) x.begin(), x.end()
#define sz(x) int(x.size())
#define pri(x) cout << x << endl
//#define endl '\n'
#define _ << " " <<
#define F first
#define S second

using namespace std;
//using namespace __gnu_pbds;

//typedef tree <int, null_type, less <int>, rb_tree_tag, tree_order_statistics_node_update> oredered_set;

typedef long long ll;
typedef long double ld;
typedef unsigned long long ull;
typedef short int si;

bitset <N> bt[N], lt, rt;

ll pw[N][2], pr[N][N];

ll mlt(ll x, ll y)
{
    return (x * y) % M;
}

ll sm(ll x, ll y)
{
    x += y;

    if (x >= M)
        x -= M;

    return x;
}

ll sub(ll x, ll y)
{
    x -= y;

    if (x < 0)
        x += M;

    return x;
}

int main()
{
    ios_base::sync_with_stdio(0); istream::sync_with_stdio(0); cin.tie(0); cout.tie(0);

//    freopen("1.in", "r", stdin);

    pw[0][0] = 1;

    for (int i = 1; i < N; i++)
        pw[i][0] = mlt(pw[i - 1][0], 2);

    pw[0][1] = 1;

    for (int i = 1; i < N; i++)
        pw[i][1] = mlt(pw[i - 1][1], 3);

    int n, m;

    cin >> n >> m;

    string s[n + n];

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

    for (int i = 0; i < n; i++)
        {
            s[i] = s[i] + s[i];

            s[i + n] = s[i];
        }

    int a[n + n][m + m];

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

                    bt[i][j] = 1;
                }
                else a[i][j] = 0;
        }

    for (int i = 0; i < n + n; i++)
        for (int j = 0; j < m + m; j++)
        {
            pr[i][j] = mlt(mlt(pw[j][0], pw[i][1]), a[i][j]);

            if (i != 0)
                pr[i][j] = sm(pr[i][j], pr[i - 1][j]);

            if (j != 0)
                pr[i][j] = sm(pr[i][j], pr[i][j - 1]);

            if (i != 0 && j != 0)
                pr[i][j] = sub(pr[i][j], pr[i - 1][j - 1]);
        }

    int x = 0, y = 0;

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

            int l = 0, r = n - 1;

            while (l < r)
            {
                int md = (l + r) >> 1;

                bool ft = 1;

                ll h = pr[i + md][j + m];

                if (i != 0)
                    h = sub(h, pr[i - 1][j + m]);

                if (j != 0)
                    h = sub(h, pr[i + md][j - 1]);

                if (i != 0 && j != 0)
                    h = sm(h, pr[i - 1][j - 1]);

                if (x > i)
                    h = mlt(h, pw[x - i][1]);

                if (y > j)
                    h = mlt(h, pw[y - j][0]);

                    ll p = pr[x + md][y + m];

                    if (x != 0)
                        p = sub(p, pr[x - 1][y + m]);

                    if (y != 0)
                        p = sub(p, pr[x + md][y - 1]);

                    if (x != 0 && y != 0)
                        p = sm(p, pr[x - 1][y - 1]);

                    if (x < i)
                        p = mlt(p, pw[i - x][1]);

                    if (y < j)
                        p = mlt(p, pw[j - y][0]);

                ft = (p == h);

                if (ft)
                    l = md + 1;
                        else r = md;
            }

//            lt = bt[x + l];
//
//            rt = bt[i + l];
//
//            lt >>= y;
//
//            rt >>= j;
//
//            int ps = (lt ^ rt)._Find_first();

            int t = 0;

            while (t < m && a[x + l][t + y] == a[i + l][t + j])
                t++;

//            if (ps < m || t < m)
//                assert(t == ps);

            if (t < m && a[x + l][t + y] == 0)
            {
                x = i; y = j;
            }
        }

    for (int i = x; i < x + n; i++)
    {
        for (int j = y; j < y + m; j++)
            cout << s[i][j];

        cout << endl;
    }
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:150:17: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
  150 |                 if (y > j)
      |                 ^~
Main.cpp:153:21: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
  153 |                     ll p = pr[x + md][y + m];
      |                     ^~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1004 KB Output is correct
2 Correct 1 ms 876 KB Output is correct
3 Correct 1 ms 876 KB Output is correct
4 Correct 1 ms 876 KB Output is correct
5 Correct 2 ms 1004 KB Output is correct
6 Correct 1 ms 1004 KB Output is correct
7 Correct 1 ms 1004 KB Output is correct

Subtask #2
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1004 KB Output is correct
2 Correct 1 ms 876 KB Output is correct
3 Correct 1 ms 876 KB Output is correct
4 Correct 1 ms 876 KB Output is correct
5 Correct 2 ms 1004 KB Output is correct
6 Correct 1 ms 1004 KB Output is correct
7 Correct 1 ms 1004 KB Output is correct
8 Correct 27 ms 7404 KB Output is correct
9 Correct 1 ms 620 KB Output is correct
10 Correct 3 ms 2924 KB Output is correct
11 Correct 25 ms 7376 KB Output is correct
12 Correct 32 ms 7532 KB Output is correct
13 Correct 26 ms 7660 KB Output is correct
14 Correct 34 ms 7788 KB Output is correct
15 Correct 25 ms 7788 KB Output is correct
16 Correct 32 ms 7752 KB Output is correct
17 Correct 34 ms 7788 KB Output is correct

Subtask #3
60.0 / 60.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 1004 KB Output is correct
2 Correct 1 ms 876 KB Output is correct
3 Correct 1 ms 876 KB Output is correct
4 Correct 1 ms 876 KB Output is correct
5 Correct 2 ms 1004 KB Output is correct
6 Correct 1 ms 1004 KB Output is correct
7 Correct 1 ms 1004 KB Output is correct
8 Correct 27 ms 7404 KB Output is correct
9 Correct 1 ms 620 KB Output is correct
10 Correct 3 ms 2924 KB Output is correct
11 Correct 25 ms 7376 KB Output is correct
12 Correct 32 ms 7532 KB Output is correct
13 Correct 26 ms 7660 KB Output is correct
14 Correct 34 ms 7788 KB Output is correct
15 Correct 25 ms 7788 KB Output is correct
16 Correct 32 ms 7752 KB Output is correct
17 Correct 34 ms 7788 KB Output is correct
18 Correct 305 ms 54636 KB Output is correct
19 Correct 13 ms 9580 KB Output is correct
20 Correct 5 ms 1388 KB Output is correct
21 Correct 287 ms 54516 KB Output is correct
22 Correct 567 ms 54764 KB Output is correct
23 Correct 313 ms 54636 KB Output is correct
24 Correct 642 ms 54892 KB Output is correct
25 Correct 277 ms 54956 KB Output is correct
26 Correct 517 ms 54892 KB Output is correct
27 Correct 561 ms 54792 KB Output is correct