Submission #992907

# Submission time Handle Problem Language Result Execution time Memory
992907 2024-06-05T08:15:42 Z danikoynov Intergalactic ship (IZhO19_xorsum) C++14
36 / 100
1710 ms 15076 KB
#include<bits/stdc++.h>
#define endl '\n'

using namespace std;
typedef long long ll;

void speed()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
}

const ll mod = 1e9 + 7;

const int maxn = 1010;

const int maxbit = 7;
const int maxq = 1e5 + 10;

int n, q;
int a[maxn];

struct query_data
{
    int l, r, x;

    void input()
    {
        cin >> l >> r >> x;
    }
} task[maxq];

bool is_affected(int i, int bit_i, int t)
{
    if (task[t].r < i || task[t].l > i)
        return false;

    if ((task[t].x & (1 << bit_i)) == 0)
        return false;

    return true;
}

ll fac[maxq], inv[maxq];

ll power(ll base, ll st)
{
    ll res = 1;
    while(st > 0)
    {
        if (st % 2 == 1)
            res = (res * base) % mod;

        base = (base * base) % mod;
        st /= 2;
    }
    return res;
}

ll comb(ll from, ll take)
{
    if (take < 0 || take > from)
        return 0;
    return ((fac[from] * inv[take]) % mod * inv[from - take]) % mod;
}

ll pw[maxq];
bitset < 310 > bt[maxbit][maxn];

vector < int > spot[(1 << maxbit) * 2][maxn];
int ch[maxbit][maxn];

int get_both(int mask, int left, int right)
{
    int cnt = 0;
    for (int i = 1; i <= left; i ++)
    {
        for (int cur : spot[mask][i])
            if (cur >= right)
            cnt ++;
    }
    return cnt;
}
void solve()
{
    cin >> n;
    for (int i = 1; i <= n; i ++)
        cin >> a[i];
    cin >> q;
    fac[0] = inv[0] = pw[0] = 1;
    for (int i = 1; i < max(q + 1, maxbit * 2); i ++)
    {
        pw[i] = (pw[i - 1] * 2) % mod;
    }


    for (int i = 1; i <= q; i ++)
    {

        fac[i] = (fac[i - 1] * (ll)(i)) % mod;
        inv[i] = power(fac[i], mod - 2);
    }

    for (int i = 1; i <= q; i ++)
    {
        task[i].input();

        for (int bit1 = 0; bit1 < maxbit; bit1 ++)
        for (int bit2 = 0; bit2 < maxbit; bit2 ++)
        {
            int mask = ((1 << bit1) | (1 << bit2));
            if ((task[i].x & mask) == mask)
            {
                spot[mask][task[i].l].push_back(task[i].r);
            }
        }
    }
    for (int i = 1; i <= n; i ++)
    {
        for (int bit = 0; bit < maxbit; bit ++)
        {

            for (int j = 1; j <= q; j ++)
            {
                ch[bit][i] += is_affected(i, bit, j);
                bt[bit][i][j] = is_affected(i, bit, j);
            }
        }
    }

    ll ans = 0;
    for (int i = 1; i <= n; i ++)
    {
        for (int j = i; j <= n; j ++)
        {

            for (int bit_i = 0; bit_i < maxbit; bit_i ++)
            {
                for (int bit_j = 0; bit_j < maxbit; bit_j ++)
                {
                    int both = 0;
                    int ch_i = 0;
                    int ch_j = 0;
                    int neit = 0;

                    //ch_i = bt[bit_i][i].count();
                    //ch_j = bt[bit_j][j].count();

                    ch_i = ch[bit_i][i];
                    ch_j = ch[bit_j][j];
                    //both = get_both(((1 << bit_i) | (1 << bit_j)), i, j);
                     both = (bt[bit_i][i] & bt[bit_j][j]).count();
                    ch_i -= both;
                    ch_j -= both;
                    neit = q - both - ch_i - ch_j;
                    /**for (int t = 1; t <= q; t ++)
                    {
                        bool af_i = is_affected(i, bit_i, t), af_j = is_affected(j, bit_j, t);
                        if (af_i == false && af_j == false)
                            neit ++;
                        else if (af_i == true && af_j == false)
                            ch_i ++;
                        else if (af_i == false && af_j == true)
                            ch_j ++;
                        else if (af_i == true && af_j == true)
                            both ++;
                    }*/

                    int val_i = ((a[i] & (1 << bit_i)) > 0);
                    int val_j = ((a[j] & (1 << bit_j)) > 0);

                    ll res = 0;
                    for (int d_i = 0; d_i < 2; d_i ++)
                        for (int d_j = 0; d_j < 2; d_j ++)
                            for (int b = 0; b < 2; b ++)
                            {
                                if ((val_i + d_i + b) % 2 == 0 ||
                                        (val_j + d_j + b) % 2 == 0)
                                    continue;

                                ll way_i = 0;
                                ll way_j = 0;
                                ll way_b = 0;
                                for (int l = d_i; l <= ch_i;  l += 2)
                                {
                                    way_i += comb(ch_i, l);
                                    if (way_i >= mod)
                                        way_i -= mod;
                                }
                                for (int l = d_j; l <= ch_j; l += 2)
                                {
                                    way_j += comb(ch_j, l);
                                    if (way_j >= mod)
                                        way_j -= mod;
                                }
                                for (int l = b; l <= both; l += 2)
                                {
                                    way_b += comb(both, l);
                                    if (way_b >= mod)
                                        way_b -= mod;
                                }
                               ///if ((a[i] & (1 << bit_i)) > 0 && (a[j] & (1 << bit_j)) > 0)
                                {
                                    ///cout << "ways " << way_i << " " << way_j << " " << way_b << endl;
                                }

                                ll ways = ((way_i * way_j) % mod * way_b) % mod;
                                res = res + ways;
                                if (res >= mod)
                                    res -= mod;
                            }



                    res = (res * (pw[bit_i + bit_j])) % mod;
                    res = (res * pw[neit]) % mod;
                    res = (res * (ll)(i) * (ll)(n - j + 1)) % mod;
                    if (i != j)
                        res = (res * 2) % mod;
                    ans += res;
                    if (ans >= mod)
                        ans -= mod;
                    ///if ((a[i] & (1 << bit_i)) > 0 && (a[j] & (1 << bit_j)) > 0)
                    {
                        ///cout << i << " " << j << " " << bit_i << " " << bit_j << " " << res << endl;
                        ///cout << pw[bit_i + bit_j] << " " << (i * (n - i + 1)) << endl;
                        ///cout << ans << endl;
                    }

                }
            }
        }
    }

    cout << ans << endl;
}

int main()
{
    speed();
    solve();
    return 0;
}
/**
2
1 3
2
1 2 2
1 1 1

*/
# Verdict Execution time Memory Grader output
1 Correct 2 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 2 ms 8792 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 1 ms 8784 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 2 ms 8792 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 1 ms 8784 KB Output is correct
6 Correct 20 ms 8792 KB Output is correct
7 Correct 18 ms 8796 KB Output is correct
8 Correct 21 ms 8848 KB Output is correct
# Verdict Execution time Memory Grader output
1 Incorrect 951 ms 15076 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 1710 ms 8972 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 4 ms 8792 KB Output is correct
2 Correct 3 ms 8844 KB Output is correct
3 Correct 4 ms 8796 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 4 ms 8792 KB Output is correct
2 Correct 3 ms 8844 KB Output is correct
3 Correct 4 ms 8796 KB Output is correct
4 Incorrect 119 ms 9048 KB Output isn't correct
5 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 2 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 2 ms 8792 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 1 ms 8784 KB Output is correct
6 Correct 20 ms 8792 KB Output is correct
7 Correct 18 ms 8796 KB Output is correct
8 Correct 21 ms 8848 KB Output is correct
9 Correct 4 ms 8792 KB Output is correct
10 Correct 3 ms 8844 KB Output is correct
11 Correct 4 ms 8796 KB Output is correct
12 Correct 99 ms 8888 KB Output is correct
13 Correct 102 ms 8796 KB Output is correct
14 Correct 26 ms 8796 KB Output is correct
15 Correct 41 ms 8796 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 2 ms 8792 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 1 ms 8784 KB Output is correct
6 Correct 20 ms 8792 KB Output is correct
7 Correct 18 ms 8796 KB Output is correct
8 Correct 21 ms 8848 KB Output is correct
9 Correct 4 ms 8792 KB Output is correct
10 Correct 3 ms 8844 KB Output is correct
11 Correct 4 ms 8796 KB Output is correct
12 Incorrect 119 ms 9048 KB Output isn't correct
13 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Correct 2 ms 8796 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 2 ms 8792 KB Output is correct
4 Correct 2 ms 8796 KB Output is correct
5 Correct 1 ms 8784 KB Output is correct
6 Correct 20 ms 8792 KB Output is correct
7 Correct 18 ms 8796 KB Output is correct
8 Correct 21 ms 8848 KB Output is correct
9 Incorrect 951 ms 15076 KB Output isn't correct
10 Halted 0 ms 0 KB -