oj.uz

Submission #155531

# Submission time Handle Problem Language Result Execution time Memory
155531 2019-09-28T21:50:36 Z Dasha_Gnedko Chessboard (IZhO18_chessboard) C++14
100 / 100
 1975 ms 2040 KB 
#include <bits/stdc++.h>

//#include <ext/pb_ds/detail/standard_policies.hpp>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>

//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")

#define ll long long
#define ld long double
#define pb push_back
#define F first
#define S second
#define endl '\n'
//#define int long long

using namespace std;

//using namespace __gnu_pbds;
//template <typename T> using ordered_set = tree <T, null_type, less < T >, rb_tree_tag, tree_order_statistics_node_update>;

const int N = 1e5 + 100;
const int M = 21890;
const ll mod = 1e9 + 7;
const ll MOD = 998244353;
const int P = 1336;
const ld eps = 0.000000001;
const int inf = 1e9 + 7;
const ll inff = 1e18 + 7;

mt19937 gen(chrono::high_resolution_clock::now().time_since_epoch().count());

int l1[N], r1[N], l2[N], r2[N];
int m;
vector <int> a;

pair <int, pair <ll, ll> > get(ll r, ll x, ll y, int fl)
{
    ll gx = x / r, gy = y / r;
    if (x % r) gx++;
    if (y % r) gy++;

    bool f;

    if (fl == 0)
    {
        if (gx % 2)
        {
            if (gy % 2) f = 0;
            else f = 1;
        }
        else if (gy % 2) f = 1;
        else f = 0;
    }
    else
    {
        if (gx % 2)
        {
            if (gy % 2) f = 1;
            else f = 0;
        }
        else if (gy % 2) f = 0;
        else f = 1;
    }

    ll bx = 1ll * gx * r - x + 1;
    ll by = 1ll * gy * r - y + 1;

    return {f, {bx, by}};
}

ll solve(ll r, ll x1, ll y1, ll x2, ll y2, int fl)
{
    if (x1 > x2 || y1 > y2) return 0;

    ll gx1 = x1 / r + 1, gx2 = x2 / r;
    if (x1 % r != 1) gx1++;
    if (x1 % r == 0) gx1--;

    ll gy1 = y1 / r + 1, gy2 = y2 / r;
    if (y1 % r != 1) gy1++;
    if (y1 % r == 0) gy1--;

    if (r == 1)
    {
        gx1 = x1;
        gx2 = x2;
        gy1 = y1;
        gy2 = y2;
    }

    if (gx1 > gx2 || gy1 > gy2)
    {
        pair < int, pair <ll, ll> > p;

            ll gx = x1 / r, gy = y1 / r;
            if (x1 % r) gx++;
            if (y1 % r) gy++;

            bool f;

            if (fl == 0)
            {
                if (gx % 2)
                {
                    if (gy % 2) f = 0;
                    else f = 1;
                }
                else if (gy % 2) f = 1;
                else f = 0;
            }
            else
            {
                if (gx % 2)
                {
                    if (gy % 2) f = 1;
                    else f = 0;
                }
                else if (gy % 2) f = 0;
                else f = 1;
            }

            ll bx = 1ll * gx * r - x1 + 1;
            ll by = 1ll * gy * r - y1 + 1;

            p.F = f;
            p.S.F = bx;
            p.S.S = by;

        if (gx1 > gx2 && gy1 > gy2)
        {
            if (x1 + p.S.F > x2 && y1 + p.S.S > y2)
            {
                if (p.F == 0) return 1ll * (x2 - x1 + 1) * (y2 - y1 + 1);
                else return 0;
            }

            if (x1 + p.S.F > x2)
            {
                ll S = 1ll * (x2 - x1 + 1) * p.S.S;
                if (p.F == 0) return S;
                else return 1ll * (x2 - x1 + 1) * (y2 - y1 + 1) - S;
            }

            if (y1 + p.S.S > y2)
            {
                ll S = 1ll * (y2 - y1 + 1) * p.S.F;
                if (p.F == 0) return S;
                else return 1ll * (x2 - x1 + 1) * (y2 - y1 + 1) - S;
            }

            ll v1 = 1ll * p.S.F * p.S.S + 1ll * (x2 - x1 + 1 - p.S.F) * (y2 - y1 + 1 - p.S.S);
            ll v2 = 1ll * (x2 - x1 + 1) * (y2 - y1 + 1) - v1;

            if (p.F == 0) return v1;
            else return v2;

        }

        if (gx1 <= gx2)
        {

            if (y1 + p.S.S <= y2)
            {
                return 1ll * solve(r, x1, y1, x2, y1 + p.S.S - 1, fl) + solve(r, x1, y1 + p.S.S, x2, y2, fl);
            }

            ll S = 0;
            if (p.S.F < r) S += 1ll * p.S.F * (y2 - y1 + 1);
            ll k = (gx2 - gx1 + 1) / 2;
            if (p.S.F == r) k = (gx2 - gx1 + 1 + 1) / 2;
            S += 1ll * (y2 - y1 + 1) * r * k;

            pair < int, pair <ll, ll> > p1;

            gx = (gx2 * r + 1) / r; gy = y1 / r;
            if ((gx2 * r + 1) % r) gx++;
            if (y1 % r) gy++;

            if (fl == 0)
            {
                if (gx % 2)
                {
                    if (gy % 2) f = 0;
                    else f = 1;
                }
                else if (gy % 2) f = 1;
                else f = 0;
            }
            else
            {
                if (gx % 2)
                {
                    if (gy % 2) f = 1;
                    else f = 0;
                }
                else if (gy % 2) f = 0;
                else f = 1;
            }

            bx = 1ll * gx * r - (gx2 * r + 1) + 1;
            by = 1ll * gy * r - y1 + 1;

            p1.F = f;
            p1.S.F = bx;
            p1.S.S = by;

            if (p1.F == p.F && gx2 * r + 1 <= x2) S += 1ll * (x2 - gx2 * r) * (y2 - y1 + 1);

            if (p.F == 0) return S;
            else return 1ll * (x2 - x1 + 1) * (y2 - y1 + 1) - S;

        }

        if (gy1 <= gy2)
        {


            if (x1 + p.S.F <= x2)
            {
                return 1ll * solve(r, x1, y1, x1 + p.S.F - 1, y2, fl) + solve(r, x1 + p.S.F, y1, x2, y2, fl);
            }

            ll S = 0;
            if (p.S.S < r) S += 1ll * (x2 - x1 + 1) * p.S.S;
            ll k = (gy2 - gy1 + 1) / 2;
            if (p.S.S == r) k = (gy2 - gy1 + 1 + 1) / 2;
            S += 1ll * (x2 - x1 + 1) * r * k;

            pair < int, pair <ll, ll> > p1;

            gx = x1 / r; gy = (gy2 * r + 1) / r;
            if (x1 % r) gx++;
            if ((gy2 * r + 1) % r) gy++;

            if (fl == 0)
            {
                if (gx % 2)
                {
                    if (gy % 2) f = 0;
                    else f = 1;
                }
                else if (gy % 2) f = 1;
                else f = 0;
            }
            else
            {
                if (gx % 2)
                {
                    if (gy % 2) f = 1;
                    else f = 0;
                }
                else if (gy % 2) f = 0;
                else f = 1;
            }

            bx = 1ll * gx * r - x1 + 1;
            by = 1ll * gy * r - (gy2 * r + 1) + 1;

            p1.F = f;
            p1.S.F = bx;
            p1.S.S = by;

            if (p1.F == p.F && gy2 * r + 1 <= y2) S += (y2 - gy2 * r) * (x2 - x1 + 1);

            if (p.F == 0) return S;
            else return (x2 - x1 + 1) * (y2 - y1 + 1) - S;

        }

        return 0;

    }

    ll stx = 1ll * gx1 * r - r + 1;
    ll ex = 1ll * gx2 * r;

    ll sty = 1ll * gy1 * r - r + 1;
    ll ey = 1ll * gy2 * r;

    ll kolx = (gx2 - gx1 + 1 + 1) / 2;
    ll koly = (gy2 - gy1 + 1 + 1) / 2;

    ll S = 1ll * kolx * koly * r * r;

    kolx = (gx2 - gx1 + 1) / 2;
    koly = (gy2 - gy1 + 1) / 2;

    S += 1ll * kolx * koly * r * r;

    pair < int, pair <ll, ll> > p;

    ll gx = stx / r, gy = sty / r;
    if (stx % r) gx++;
    if (sty % r) gy++;

    bool f;

    if (fl == 0)
    {
        if (gx % 2)
        {
            if (gy % 2) f = 0;
            else f = 1;
        }
        else if (gy % 2) f = 1;
        else f = 0;
    }
    else
    {
        if (gx % 2)
        {
            if (gy % 2) f = 1;
            else f = 0;
        }
        else if (gy % 2) f = 0;
        else f = 1;
    }

    ll bx = 1ll * gx * r - stx + 1;
    ll by = 1ll * gy * r - sty + 1;

    p.F = f;
    p.S.F = bx;
    p.S.S = by;

    ll add = solve(r, x1, y1, stx - 1, y2, fl);
    add += solve(r, ex + 1, y1, x2, y2, fl);
    add += solve(r, stx, y1, ex, sty - 1, fl);
    add += solve(r, stx, ey + 1, ex, y2, fl);

    if (p.F == 0) return S + add;
    else return 1ll * (ex - stx + 1) * (ey - sty + 1) - S + add;
}


int32_t main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    srand(time(0));

    //freopen("input.txt", "r", stdin);
    //freopen("output.txt", "w", stdout);

    ll n;
    cin >> n >> m;

    for(int i = 0; i < m; i++)
    {
        cin >> l1[i] >> r1[i] >> l2[i] >> r2[i];
    }

    a.pb(1);

    int d = 2;
    while (d * d <= n)
    {
        if (n % d == 0)
        {
            a.pb(d);
            a.pb(n / d);
        }
        d++;
    }

    int kopn = n;
    ll ans = inff;

    for(auto to: a)
    {
        n = kopn;
        ll r = to;

        ll S = 1ll * n * n;
        n /= r;

        ll kx = 1ll * (n + 1) / 2;
        ll k1 = kx * kx;
        kx = 1ll * n / 2;
        k1 += kx * kx;
        k1 *= r * r;

        ll k2 = S - k1;

        ll v1 = 0, v2 = 0;

        for(int i = 0; i < m; i++)
        {
            ll pl = 1ll * (l2[i] - l1[i] + 1) * (r2[i] - r1[i] + 1);
            ll c1 = solve(r, l1[i], r1[i], l2[i], r2[i], 1);
            ll c2 = solve(r, l1[i], r1[i], l2[i], r2[i], 0);

            v1 += c1;
            k1 -= (pl - c1);

            v2 += c2;
            k2 -= (pl - c2);
        }

        ans = min(ans, min(v1 + k1, v2 + k2));
    }

    cout << ans;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 1272 KB Output is correct
2 Correct 12 ms 660 KB Output is correct
3 Correct 25 ms 1016 KB Output is correct
4 Correct 28 ms 1144 KB Output is correct
5 Correct 34 ms 1144 KB Output is correct
6 Correct 23 ms 888 KB Output is correct
7 Correct 6 ms 504 KB Output is correct
8 Correct 23 ms 1016 KB Output is correct
9 Correct 56 ms 1784 KB Output is correct
10 Correct 32 ms 1144 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 2 ms 380 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 3 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 3 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 3 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 2 ms 380 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 23 ms 760 KB Output is correct
17 Correct 45 ms 1656 KB Output is correct
18 Correct 78 ms 1912 KB Output is correct
19 Correct 348 ms 1784 KB Output is correct
20 Correct 377 ms 2040 KB Output is correct
21 Correct 43 ms 1656 KB Output is correct
22 Correct 4 ms 376 KB Output is correct
23 Correct 56 ms 1100 KB Output is correct
24 Correct 72 ms 1784 KB Output is correct
25 Correct 13 ms 504 KB Output is correct
26 Correct 50 ms 1400 KB Output is correct
27 Correct 74 ms 1460 KB Output is correct
28 Correct 75 ms 1784 KB Output is correct
29 Correct 19 ms 888 KB Output is correct
30 Correct 4 ms 376 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 39 ms 1272 KB Output is correct
2 Correct 12 ms 660 KB Output is correct
3 Correct 25 ms 1016 KB Output is correct
4 Correct 28 ms 1144 KB Output is correct
5 Correct 34 ms 1144 KB Output is correct
6 Correct 23 ms 888 KB Output is correct
7 Correct 6 ms 504 KB Output is correct
8 Correct 23 ms 1016 KB Output is correct
9 Correct 56 ms 1784 KB Output is correct
10 Correct 32 ms 1144 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 2 ms 376 KB Output is correct
14 Correct 3 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 3 ms 376 KB Output is correct
17 Correct 3 ms 376 KB Output is correct
18 Correct 3 ms 376 KB Output is correct
19 Correct 3 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 3 ms 376 KB Output is correct
22 Correct 2 ms 380 KB Output is correct
23 Correct 3 ms 376 KB Output is correct
24 Correct 3 ms 376 KB Output is correct
25 Correct 3 ms 376 KB Output is correct
26 Correct 23 ms 760 KB Output is correct
27 Correct 45 ms 1656 KB Output is correct
28 Correct 78 ms 1912 KB Output is correct
29 Correct 348 ms 1784 KB Output is correct
30 Correct 377 ms 2040 KB Output is correct
31 Correct 43 ms 1656 KB Output is correct
32 Correct 4 ms 376 KB Output is correct
33 Correct 56 ms 1100 KB Output is correct
34 Correct 72 ms 1784 KB Output is correct
35 Correct 13 ms 504 KB Output is correct
36 Correct 50 ms 1400 KB Output is correct
37 Correct 74 ms 1460 KB Output is correct
38 Correct 75 ms 1784 KB Output is correct
39 Correct 19 ms 888 KB Output is correct
40 Correct 4 ms 376 KB Output is correct
41 Correct 283 ms 1660 KB Output is correct
42 Correct 82 ms 1912 KB Output is correct
43 Correct 154 ms 1740 KB Output is correct
44 Correct 78 ms 1784 KB Output is correct
45 Correct 58 ms 1912 KB Output is correct
46 Correct 312 ms 1912 KB Output is correct
47 Correct 60 ms 1784 KB Output is correct
48 Correct 118 ms 1684 KB Output is correct
49 Correct 71 ms 1656 KB Output is correct
50 Correct 1483 ms 1828 KB Output is correct
51 Correct 1599 ms 1928 KB Output is correct
52 Correct 1494 ms 1816 KB Output is correct
53 Correct 1579 ms 1912 KB Output is correct
54 Correct 1462 ms 1792 KB Output is correct
55 Correct 1628 ms 1912 KB Output is correct
56 Correct 1436 ms 1788 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 39 ms 1272 KB Output is correct
10 Correct 12 ms 660 KB Output is correct
11 Correct 25 ms 1016 KB Output is correct
12 Correct 28 ms 1144 KB Output is correct
13 Correct 34 ms 1144 KB Output is correct
14 Correct 23 ms 888 KB Output is correct
15 Correct 6 ms 504 KB Output is correct
16 Correct 23 ms 1016 KB Output is correct
17 Correct 56 ms 1784 KB Output is correct
18 Correct 32 ms 1144 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 3 ms 376 KB Output is correct
25 Correct 3 ms 376 KB Output is correct
26 Correct 3 ms 376 KB Output is correct
27 Correct 3 ms 376 KB Output is correct
28 Correct 2 ms 376 KB Output is correct
29 Correct 3 ms 376 KB Output is correct
30 Correct 2 ms 380 KB Output is correct
31 Correct 3 ms 376 KB Output is correct
32 Correct 3 ms 376 KB Output is correct
33 Correct 3 ms 376 KB Output is correct
34 Correct 23 ms 760 KB Output is correct
35 Correct 45 ms 1656 KB Output is correct
36 Correct 78 ms 1912 KB Output is correct
37 Correct 348 ms 1784 KB Output is correct
38 Correct 377 ms 2040 KB Output is correct
39 Correct 43 ms 1656 KB Output is correct
40 Correct 4 ms 376 KB Output is correct
41 Correct 56 ms 1100 KB Output is correct
42 Correct 72 ms 1784 KB Output is correct
43 Correct 13 ms 504 KB Output is correct
44 Correct 50 ms 1400 KB Output is correct
45 Correct 74 ms 1460 KB Output is correct
46 Correct 75 ms 1784 KB Output is correct
47 Correct 19 ms 888 KB Output is correct
48 Correct 4 ms 376 KB Output is correct
49 Correct 283 ms 1660 KB Output is correct
50 Correct 82 ms 1912 KB Output is correct
51 Correct 154 ms 1740 KB Output is correct
52 Correct 78 ms 1784 KB Output is correct
53 Correct 58 ms 1912 KB Output is correct
54 Correct 312 ms 1912 KB Output is correct
55 Correct 60 ms 1784 KB Output is correct
56 Correct 118 ms 1684 KB Output is correct
57 Correct 71 ms 1656 KB Output is correct
58 Correct 1483 ms 1828 KB Output is correct
59 Correct 1599 ms 1928 KB Output is correct
60 Correct 1494 ms 1816 KB Output is correct
61 Correct 1579 ms 1912 KB Output is correct
62 Correct 1462 ms 1792 KB Output is correct
63 Correct 1628 ms 1912 KB Output is correct
64 Correct 1436 ms 1788 KB Output is correct
65 Correct 2 ms 376 KB Output is correct
66 Correct 2 ms 372 KB Output is correct
67 Correct 1769 ms 1860 KB Output is correct
68 Correct 1776 ms 1868 KB Output is correct
69 Correct 1526 ms 1784 KB Output is correct
70 Correct 1592 ms 1784 KB Output is correct
71 Correct 1649 ms 1792 KB Output is correct
72 Correct 1584 ms 1784 KB Output is correct
73 Correct 1610 ms 1728 KB Output is correct
74 Correct 1761 ms 1912 KB Output is correct
75 Correct 1626 ms 1784 KB Output is correct
76 Correct 1783 ms 1912 KB Output is correct
77 Correct 272 ms 1912 KB Output is correct
78 Correct 83 ms 1784 KB Output is correct
79 Correct 229 ms 1764 KB Output is correct
80 Correct 196 ms 1784 KB Output is correct
81 Correct 186 ms 1656 KB Output is correct
82 Correct 154 ms 1912 KB Output is correct
83 Correct 121 ms 1656 KB Output is correct
84 Correct 1062 ms 1912 KB Output is correct
85 Correct 1975 ms 2040 KB Output is correct
86 Correct 5 ms 376 KB Output is correct
87 Correct 3 ms 376 KB Output is correct
88 Correct 1846 ms 1948 KB Output is correct
89 Correct 370 ms 728 KB Output is correct
90 Correct 2 ms 376 KB Output is correct