oj.uz

답안 #792636

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
792636 2023-07-25T07:40:58 Z 이동현(#10054) Binaria (CCO23_day1problem1) C++17
10 / 25
 1000 ms 94232 KB 
#include <bits/stdc++.h>
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
#define int long long
using namespace std;

const int NS = (int)1e6 + 4, mod = (int)1e6 + 3;
int n, k;
int a[NS];
int r[NS], l[NS], chk[NS];

int pw(int x, int y){
    if(!y) return 1;
    if(y == 1) return x;
    int v = pw(x, y / 2);
    return v * v % mod * (y % 2 ? x : 1) % mod;
}

int fdr(int x){
    return (x == r[x] ? x : r[x] = fdr(r[x]));
}

int fdl(int x){
    return (x == l[x] || x == -1 ? x : l[x] = fdl(l[x]));
}

struct Fenwick{
    int n;
    vector<int> tr;
    Fenwick(int m){
        n = m + 4;
        tr.resize(n);
    }

    void push(int pos, int val){
        pos += 2;
        for(int i = pos; i < n; i += (i & -i)){
            tr[i] += val;
        }
    }

    int get(int pos){
        int rv = 0;
        pos += 2;
        for(int i = pos; i > 0; i -= (i & -i)){
            rv += tr[i];
        }

        return rv;
    }

    int get(int l, int r){
        return get(r) - get(l - 1);
    }
};

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);

    iota(r, r + NS, 0);
    iota(l, l + NS, 0);
    memset(chk, -1, sizeof(chk));

    int n, k;
    cin >> n >> k;
    vector<int> a(n - k + 1);
    for(int i = 0; i < n - k + 1; ++i){
        cin >> a[i];
    }
    Fenwick tr(n);

    auto cant = [&]{
        cout << "0\n";
        exit(0);
    };

    auto nor = [&](vector<int> x)->vector<int>{
        if(x[0] > x[1]) return x;
        int nl = fdr(x[0]);
        int nr = fdl(x[1]);
        if(nl > nr){
            int nv = x[2] - tr.get(x[0], x[1]);
            if(nv) cant();
            return {nl, nr, 0};
        }
        int nv = x[2] - tr.get(x[0], nl - 1) - tr.get(nr + 1, x[1]);
        return {nl, nr, nv};
    };

    auto upd = [&](int pos, int val){
        // cout << "UPD " << pos << ' ' << val << endl;
        if(val < 0 || val > 1) cant();
        chk[pos] = val;
        tr.push(pos, val);
        l[pos] = pos - 1;
        r[pos] = pos + 1;
    };

    vector<vector<int>> ran(n - k + 1);
    for(int i = 0; i < n - k + 1; ++i){
        ran[i] = {i, i + k - 1, a[i]};
    }
    while(true){
        int f = 0;
        for(int i = 0; i + 1 < (int)ran.size(); ++i){
            ran[i] = nor(ran[i]);
            // cout << i << ' ' << ran[i + 1][0] << ' ' << ran[i + 1][1] << ' ' << ran[i + 1][2] << endl;
            ran[i + 1] = nor(ran[i + 1]);
            int sval = ran[i][2] - tr.get(ran[i][0], ran[i][1]);
            int nval = ran[i + 1][2] - tr.get(ran[i + 1][0], ran[i + 1][1]);
            if(ran[i][0] > ran[i][1] || ran[i + 1][0] > ran[i + 1][1]) continue;
            if(ran[i][0] == ran[i + 1][0] && ran[i][1] == ran[i + 1][1]){
                if(sval != nval) cant();
                continue;
            }
            if(ran[i][0] < ran[i + 1][0] && ran[i][1] < ran[i + 1][1] && sval == nval){
                continue;
            }

            f = 1;
            // cout << i << ' ' << sval << ' ' << nval << endl;

            if(ran[i][0] == ran[i + 1][0]){
                upd(ran[i + 1][1], nval - sval);
            }
            else if(ran[i][1] == ran[i + 1][1]){
                upd(ran[i][0], sval - nval);
            }
            else{
                if(sval > nval){
                    upd(ran[i][0], sval - nval);
                    upd(ran[i + 1][1], 0);
                }
                else{
                    upd(ran[i + 1][1], nval - sval);
                    upd(ran[i][0], 0);
                }
            }

            i = max(0ll, i - 3);
        }
        if(!f) break;
    }

    // cout << "HI" << endl;

    int stval = 0;
    while(stval < n - k + 1){
        ran[stval] = nor(ran[stval]);
        if(ran[stval][0] <= ran[stval][1]) break;
        ++stval;
    }
    if(stval == n - k + 1){
        cout << "1\n";
        return 0;
    }
    int ac = 0, oc = a[stval];
    for(int i = stval; i < stval + k; ++i){
        ac += (chk[i] == -1);
        oc -= (chk[i] == 1);
    }

    int ans = 1;
    for(int i = oc + 1; i <= ac; ++i){
        (ans *= i) %= mod;
    }
    for(int i = 2; i <= ac - oc; ++i){
        (ans *= pw(i, mod - 2)) %= mod;
    }

    cout << ans << '\n';
    
    return 0;
}

Subtask #1
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 23764 KB Output is correct
2 Correct 9 ms 23808 KB Output is correct
3 Correct 9 ms 23716 KB Output is correct
4 Correct 10 ms 23736 KB Output is correct
5 Correct 9 ms 23772 KB Output is correct
6 Correct 10 ms 23788 KB Output is correct
7 Correct 8 ms 23736 KB Output is correct
8 Correct 10 ms 23784 KB Output is correct
9 Correct 11 ms 23764 KB Output is correct
10 Correct 9 ms 23764 KB Output is correct
11 Correct 9 ms 23732 KB Output is correct
12 Correct 9 ms 23764 KB Output is correct

Subtask #2
3.0 / 3.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 23764 KB Output is correct
2 Correct 9 ms 23808 KB Output is correct
3 Correct 9 ms 23716 KB Output is correct
4 Correct 10 ms 23736 KB Output is correct
5 Correct 9 ms 23772 KB Output is correct
6 Correct 10 ms 23788 KB Output is correct
7 Correct 8 ms 23736 KB Output is correct
8 Correct 10 ms 23784 KB Output is correct
9 Correct 11 ms 23764 KB Output is correct
10 Correct 9 ms 23764 KB Output is correct
11 Correct 9 ms 23732 KB Output is correct
12 Correct 9 ms 23764 KB Output is correct
13 Correct 9 ms 23764 KB Output is correct
14 Correct 9 ms 23792 KB Output is correct
15 Correct 8 ms 23752 KB Output is correct
16 Correct 9 ms 23764 KB Output is correct
17 Correct 11 ms 23732 KB Output is correct
18 Correct 9 ms 23796 KB Output is correct
19 Correct 10 ms 23732 KB Output is correct
20 Correct 12 ms 23680 KB Output is correct
21 Correct 10 ms 23788 KB Output is correct

Subtask #3
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 23764 KB Output is correct
2 Correct 9 ms 23808 KB Output is correct
3 Correct 9 ms 23716 KB Output is correct
4 Correct 10 ms 23736 KB Output is correct
5 Correct 9 ms 23772 KB Output is correct
6 Correct 10 ms 23788 KB Output is correct
7 Correct 8 ms 23736 KB Output is correct
8 Correct 10 ms 23784 KB Output is correct
9 Correct 11 ms 23764 KB Output is correct
10 Correct 9 ms 23764 KB Output is correct
11 Correct 9 ms 23732 KB Output is correct
12 Correct 9 ms 23764 KB Output is correct
13 Correct 9 ms 23764 KB Output is correct
14 Correct 9 ms 23792 KB Output is correct
15 Correct 8 ms 23752 KB Output is correct
16 Correct 9 ms 23764 KB Output is correct
17 Correct 11 ms 23732 KB Output is correct
18 Correct 9 ms 23796 KB Output is correct
19 Correct 10 ms 23732 KB Output is correct
20 Correct 12 ms 23680 KB Output is correct
21 Correct 10 ms 23788 KB Output is correct
22 Correct 9 ms 23764 KB Output is correct
23 Correct 20 ms 23760 KB Output is correct
24 Correct 9 ms 23804 KB Output is correct
25 Correct 9 ms 23768 KB Output is correct
26 Correct 9 ms 23780 KB Output is correct
27 Correct 10 ms 23764 KB Output is correct
28 Correct 11 ms 23808 KB Output is correct
29 Correct 10 ms 23764 KB Output is correct
30 Correct 10 ms 23844 KB Output is correct
31 Correct 26 ms 23860 KB Output is correct
32 Correct 22 ms 23812 KB Output is correct
33 Correct 27 ms 23880 KB Output is correct
34 Correct 10 ms 23800 KB Output is correct

Subtask #4
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 23764 KB Output is correct
2 Correct 9 ms 23808 KB Output is correct
3 Correct 9 ms 23716 KB Output is correct
4 Correct 10 ms 23736 KB Output is correct
5 Correct 9 ms 23772 KB Output is correct
6 Correct 10 ms 23788 KB Output is correct
7 Correct 8 ms 23736 KB Output is correct
8 Correct 10 ms 23784 KB Output is correct
9 Correct 11 ms 23764 KB Output is correct
10 Correct 9 ms 23764 KB Output is correct
11 Correct 9 ms 23732 KB Output is correct
12 Correct 9 ms 23764 KB Output is correct
13 Correct 9 ms 23764 KB Output is correct
14 Correct 9 ms 23792 KB Output is correct
15 Correct 8 ms 23752 KB Output is correct
16 Correct 9 ms 23764 KB Output is correct
17 Correct 11 ms 23732 KB Output is correct
18 Correct 9 ms 23796 KB Output is correct
19 Correct 10 ms 23732 KB Output is correct
20 Correct 12 ms 23680 KB Output is correct
21 Correct 10 ms 23788 KB Output is correct
22 Correct 9 ms 23764 KB Output is correct
23 Correct 20 ms 23760 KB Output is correct
24 Correct 9 ms 23804 KB Output is correct
25 Correct 9 ms 23768 KB Output is correct
26 Correct 9 ms 23780 KB Output is correct
27 Correct 10 ms 23764 KB Output is correct
28 Correct 11 ms 23808 KB Output is correct
29 Correct 10 ms 23764 KB Output is correct
30 Correct 10 ms 23844 KB Output is correct
31 Correct 26 ms 23860 KB Output is correct
32 Correct 22 ms 23812 KB Output is correct
33 Correct 27 ms 23880 KB Output is correct
34 Correct 10 ms 23800 KB Output is correct
35 Correct 239 ms 94232 KB Output is correct
36 Execution timed out 1092 ms 94232 KB Time limit exceeded
37 Halted 0 ms 0 KB -

Subtask #5
0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 23764 KB Output is correct
2 Correct 9 ms 23808 KB Output is correct
3 Correct 9 ms 23716 KB Output is correct
4 Correct 10 ms 23736 KB Output is correct
5 Correct 9 ms 23772 KB Output is correct
6 Correct 10 ms 23788 KB Output is correct
7 Correct 8 ms 23736 KB Output is correct
8 Correct 10 ms 23784 KB Output is correct
9 Correct 11 ms 23764 KB Output is correct
10 Correct 9 ms 23764 KB Output is correct
11 Correct 9 ms 23732 KB Output is correct
12 Correct 9 ms 23764 KB Output is correct
13 Correct 9 ms 23764 KB Output is correct
14 Correct 9 ms 23792 KB Output is correct
15 Correct 8 ms 23752 KB Output is correct
16 Correct 9 ms 23764 KB Output is correct
17 Correct 11 ms 23732 KB Output is correct
18 Correct 9 ms 23796 KB Output is correct
19 Correct 10 ms 23732 KB Output is correct
20 Correct 12 ms 23680 KB Output is correct
21 Correct 10 ms 23788 KB Output is correct
22 Correct 9 ms 23764 KB Output is correct
23 Correct 20 ms 23760 KB Output is correct
24 Correct 9 ms 23804 KB Output is correct
25 Correct 9 ms 23768 KB Output is correct
26 Correct 9 ms 23780 KB Output is correct
27 Correct 10 ms 23764 KB Output is correct
28 Correct 11 ms 23808 KB Output is correct
29 Correct 10 ms 23764 KB Output is correct
30 Correct 10 ms 23844 KB Output is correct
31 Correct 26 ms 23860 KB Output is correct
32 Correct 22 ms 23812 KB Output is correct
33 Correct 27 ms 23880 KB Output is correct
34 Correct 10 ms 23800 KB Output is correct
35 Correct 239 ms 94232 KB Output is correct
36 Execution timed out 1092 ms 94232 KB Time limit exceeded
37 Halted 0 ms 0 KB -

Subtask #6
0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 10 ms 23764 KB Output is correct
2 Correct 9 ms 23808 KB Output is correct
3 Correct 9 ms 23716 KB Output is correct
4 Correct 10 ms 23736 KB Output is correct
5 Correct 9 ms 23772 KB Output is correct
6 Correct 10 ms 23788 KB Output is correct
7 Correct 8 ms 23736 KB Output is correct
8 Correct 10 ms 23784 KB Output is correct
9 Correct 11 ms 23764 KB Output is correct
10 Correct 9 ms 23764 KB Output is correct
11 Correct 9 ms 23732 KB Output is correct
12 Correct 9 ms 23764 KB Output is correct
13 Correct 9 ms 23764 KB Output is correct
14 Correct 9 ms 23792 KB Output is correct
15 Correct 8 ms 23752 KB Output is correct
16 Correct 9 ms 23764 KB Output is correct
17 Correct 11 ms 23732 KB Output is correct
18 Correct 9 ms 23796 KB Output is correct
19 Correct 10 ms 23732 KB Output is correct
20 Correct 12 ms 23680 KB Output is correct
21 Correct 10 ms 23788 KB Output is correct
22 Correct 9 ms 23764 KB Output is correct
23 Correct 20 ms 23760 KB Output is correct
24 Correct 9 ms 23804 KB Output is correct
25 Correct 9 ms 23768 KB Output is correct
26 Correct 9 ms 23780 KB Output is correct
27 Correct 10 ms 23764 KB Output is correct
28 Correct 11 ms 23808 KB Output is correct
29 Correct 10 ms 23764 KB Output is correct
30 Correct 10 ms 23844 KB Output is correct
31 Correct 26 ms 23860 KB Output is correct
32 Correct 22 ms 23812 KB Output is correct
33 Correct 27 ms 23880 KB Output is correct
34 Correct 10 ms 23800 KB Output is correct
35 Correct 239 ms 94232 KB Output is correct
36 Execution timed out 1092 ms 94232 KB Time limit exceeded
37 Halted 0 ms 0 KB -