oj.uz

Submission #154286

# Submission time Handle Problem Language Result Execution time Memory
154286 2019-09-20T09:37:16 Z dandrozavr Chessboard (IZhO18_chessboard) C++14
70 / 100
 1224 ms 18592 KB 
/*
Uruchamiamy samolot zwiadowczy ( + 500% do wzlamaniej )

/▄/  /█/  /◐/   /▐/   /▌/ /▀/ /░/ /🔥/   choose  own style!

***IT'S OUR LONG WAY TO THE OIILLLL***

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*/


//#pragma GCC optimize("Ofast")
//#pragma GCC target("sse,sse2,sse3,ssse3,sse4")
//#pragma comment(linker, "/stack:200000000")

#include <bits/stdc++.h>
using namespace std;



#define pb push_back
#define ll long long
#define ld long doubl
#define fi first
#define se second
#define eb emplace_back
#define pii pair < int , int >
#define pipii pair< int, pair < int , int > >
#define TIME clock() * 1.0 / CLOCKS_PER_SEC
mt19937 gen(chrono::high_resolution_clock::now().time_since_epoch().count());

//#include <ext/pb_ds/detail/standard_policies.hpp>'
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
//using namespace __gnu_pbds;template <typename T> using ordered_set = tree <T, null_type, less< T >, rb_tree_tag,tree_order_statistics_node_update>;
namespace fastio {template <class T> ostream &operator<<(ostream &os, const vector<T> &container){for (auto &u : container)os << u << " ";return os;}template<class T1, class T2> ostream& operator << (ostream& os, const pair<T1, T2>& p) { return os << p.first << " " << p.second; }template <class T> ostream &operator<<(ostream &os, set<T> const& con) { for (auto &u : con) os << u << " "; return os; }void pr() {}template <typename T, typename... args> void pr(T x, args... tail) { cout << x << " "; pr(tail...);}}using namespace fastio;

const int N = 3e5 + 5;
const int MA = 1e6 + 1;

const int X[4] = {0, 0, 1, -1};
const int Y[4] = {-1, 1, 0, 0};

vector < int > g[N];
ll n, k;
vector < pair < pii , pii > >  q(N);
int x1, yy1, x2, y2;
int kk[4];

void update(pair < pii , pii > q, int len)
{
    x1 = q.fi.fi;
    x2 = q.se.fi;
    yy1 = q.fi.se;
    y2 = q.se.se;

    kk[0] = x1 % len;
    if (kk[0])
        kk[0] = len - kk[0];
    kk[0] = min(kk[0], x2 - x1 + 1);

    kk[1] = (x2 + 1) % len;
    kk[1] = min(kk[1], x2 - x1 + 1);

    kk[2] = yy1 % len;
    if (kk[2])
        kk[2] = len - kk[2];
    kk[2] = min(kk[2], y2 - yy1 + 1);

    kk[3] = (y2 + 1) % len;
    kk[3] = min(kk[3], y2 - yy1 + 1);
}


ll solve(int len)
{
    ll all = n * n;
    ll ans = 0;
    int llen = len * 2;

    vector < pair < pii , pii > >  z = q;

    for (int i = 0; i < n; ++i)
        if (i % llen < len)
            ans += (n / len / 2 + (n / len) % 2) * 1ll * len; else
            ans += (n / len / 2) * 1ll * len;
    for (int i = 0; i < k; ++i)
    {
        //kk[4]
        update(q[i], len);
//        cout<<ans<<endl;

        if (kk[2])
        {
            ll otv = 0;
            if (((x1 % llen < len) + (yy1 % llen < len)) % 2 == 0)
                otv -= kk[0]; else otv += kk[0];
            if (((x1 / len) != (x2 / len)) || (!kk[0]))
            if (((x2 % llen < len) + (yy1 % llen < len)) % 2 == 0)
                otv -= kk[1]; else otv += kk[1];

            ll dis = x2 - x1 + 1 - kk[0] - kk[1];
            ll bx = dis / len / 2 + (dis / len) % 2;
            ll mx = dis / len / 2;

            if ((1 + (yy1 % llen < len)) % 2 == 0)
               otv -= len * bx,
               otv += len * mx; else
               otv += len * bx,
               otv -= len * mx;
            ans += otv * kk[2];
            q[i].fi.se += kk[2];
        }

        if (q[i].fi.fi > q[i].se.fi || q[i].fi.se > q[i].se.se) continue;
        update(q[i], len);

        if (kk[0])
        {
            ll otv = 0;
            if (((x1 % llen < len) + (y2 % llen < len)) % 2 == 0)
                otv -= kk[3]; else otv += kk[3];
            ll dis = y2 - yy1 + 1 - kk[3];
            ll bx = dis / len / 2 + (dis / len) % 2;
            ll mx = dis / len / 2;
            if (((x1 % llen < len) + (yy1 % llen < len)) % 2 == 0)
               otv -= len * bx,
               otv += len * mx; else
               otv += len * bx,
               otv -= len * mx;
            ans += otv * kk[0];
            q[i].fi.fi += kk[0];
        }

        if (q[i].fi.fi > q[i].se.fi || q[i].fi.se > q[i].se.se) continue;
        update(q[i], len);

        if (kk[3])
        {
            ll otv = 0;
            if (((x2 % llen < len) + (y2 % llen < len)) % 2 == 0)
                otv -= kk[1]; else otv += kk[1];
            ll dis = x2 - x1 + 1 - kk[1];
            ll bx = dis / len / 2 + (dis / len) % 2;
            ll mx = dis / len / 2;
            if (((x1 % llen < len) + (y2 % llen < len)) % 2 == 0)
               otv -= len * bx,
               otv += len * mx; else
               otv += len * bx,
               otv -= len * mx;
            ans += otv * kk[3];
            q[i].se.se -= kk[3];
        }

        if (q[i].fi.fi > q[i].se.fi || q[i].fi.se > q[i].se.se) continue;
        update(q[i], len);
//        cout<<kk[0]<<" "<<kk[1]<<" "<<kk[2]<<" "<<kk[3]<<endl;
        if (kk[1])
        {
            ll otv = 0;
            ll dis = y2 - yy1 + 1;
            ll bx = dis / len / 2 + (dis / len) % 2;
            ll mx = dis / len / 2;
            if (((x2 % llen < len) + (yy1 % llen < len)) % 2 == 0)
               otv -= len * bx,
               otv += len * mx; else
               otv += len * bx,
               otv -= len * mx;
//            cout<<otv<<endl;
            ans += otv * kk[1];
            q[i].se.fi -= kk[1];
        }

        if (q[i].fi.fi > q[i].se.fi || q[i].fi.se > q[i].se.se) continue;
        update(q[i], len);

        //right
        ll dx = q[i].se.fi - q[i].fi.fi + 1;
        ll dy = q[i].se.se - q[i].fi.se + 1;
        ll by = dy / len / 2 + (dy / len) % 2;
        ll my = dy / len / 2;
        ll bx = dx / len / 2 + (dx / len) % 2;
        ll mx = dx / len / 2;
        ll alll = dx * dy;
        int nac = (q[i].fi.fi % llen < len) + (q[i].fi.se % llen < len);
//        cout<<len<<" "<<nac<<" "<<dx<<" "<<dy<<" "<<mx<<" "<<my<<" "<<bx<<" "<<by<<" "<<ans<<endl;

        if (nac % 2 == 0)
        {
            ll ch = (bx * by + mx * my) * 1ll * len * len;
            ans -= ch;
            ans += (alll - ch);
        } else
        {
            ll ch = (mx * by + bx * my) * 1ll * len * len;
            ans -= ch;
            ans += (alll - ch);
        }
    }
//    cout<<ans<<endl;
//    cout<<all<<endl;
//    cout<<endl;
    q = z;
    return min(ans, all - ans);
}

int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    #ifdef Estb_probitie
        freopen("input.txt","r",stdin);
        freopen("output.txt","w",stdout);
    #endif

    cin >> n >> k;

    for (int i = 0; i < k; ++i)
    {
        int x1, x2, yy1, y2;
        cin >> x1 >> yy1 >> x2 >> y2;
        --x1, --x2, --yy1, --y2;
        q[i] = {{x1, yy1}, {x2, y2}};
    }
    ll ans = solve(1);
    for (int i = 2; i * i <= n; ++i)
    if (n % i == 0)
        {
            ans = min(ans, solve(i));
            ans = min(ans, solve(n / i));
        }

    cout << ans;

}

Compilation message

chessboard.cpp: In function 'long long int solve(int)':
chessboard.cpp:113:16: warning: suggest explicit braces to avoid ambiguous 'else' [-Wdangling-else]
             if (((x1 / len) != (x2 / len)) || (!kk[0]))
                ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 16760 KB Output is correct
2 Correct 30 ms 16800 KB Output is correct
3 Correct 30 ms 16840 KB Output is correct
4 Correct 26 ms 16800 KB Output is correct
5 Correct 18 ms 16764 KB Output is correct
6 Correct 33 ms 16760 KB Output is correct
7 Correct 23 ms 16800 KB Output is correct
8 Correct 23 ms 16796 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 17528 KB Output is correct
2 Correct 28 ms 17144 KB Output is correct
3 Correct 41 ms 17784 KB Output is correct
4 Correct 49 ms 17628 KB Output is correct
5 Correct 50 ms 17656 KB Output is correct
6 Correct 39 ms 17656 KB Output is correct
7 Correct 23 ms 17016 KB Output is correct
8 Correct 38 ms 17656 KB Output is correct
9 Correct 72 ms 17656 KB Output is correct
10 Correct 51 ms 17784 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 16800 KB Output is correct
2 Correct 28 ms 16800 KB Output is correct
3 Correct 31 ms 16800 KB Output is correct
4 Correct 30 ms 16888 KB Output is correct
5 Correct 24 ms 16800 KB Output is correct
6 Correct 27 ms 16800 KB Output is correct
7 Correct 30 ms 16800 KB Output is correct
8 Correct 32 ms 16800 KB Output is correct
9 Correct 28 ms 16952 KB Output is correct
10 Correct 25 ms 16888 KB Output is correct
11 Correct 27 ms 16800 KB Output is correct
12 Correct 22 ms 16760 KB Output is correct
13 Correct 28 ms 16800 KB Output is correct
14 Correct 35 ms 16800 KB Output is correct
15 Correct 24 ms 16800 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 16800 KB Output is correct
2 Correct 28 ms 16800 KB Output is correct
3 Correct 31 ms 16800 KB Output is correct
4 Correct 30 ms 16888 KB Output is correct
5 Correct 24 ms 16800 KB Output is correct
6 Correct 27 ms 16800 KB Output is correct
7 Correct 30 ms 16800 KB Output is correct
8 Correct 32 ms 16800 KB Output is correct
9 Correct 28 ms 16952 KB Output is correct
10 Correct 25 ms 16888 KB Output is correct
11 Correct 27 ms 16800 KB Output is correct
12 Correct 22 ms 16760 KB Output is correct
13 Correct 28 ms 16800 KB Output is correct
14 Correct 35 ms 16800 KB Output is correct
15 Correct 24 ms 16800 KB Output is correct
16 Correct 43 ms 17288 KB Output is correct
17 Correct 65 ms 17656 KB Output is correct
18 Correct 84 ms 17696 KB Output is correct
19 Correct 237 ms 17756 KB Output is correct
20 Correct 257 ms 17656 KB Output is correct
21 Correct 62 ms 17628 KB Output is correct
22 Correct 39 ms 16792 KB Output is correct
23 Correct 69 ms 17492 KB Output is correct
24 Correct 83 ms 17644 KB Output is correct
25 Correct 35 ms 16928 KB Output is correct
26 Correct 59 ms 17700 KB Output is correct
27 Correct 85 ms 17736 KB Output is correct
28 Correct 90 ms 17696 KB Output is correct
29 Correct 37 ms 17404 KB Output is correct
30 Correct 31 ms 16800 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 17528 KB Output is correct
2 Correct 28 ms 17144 KB Output is correct
3 Correct 41 ms 17784 KB Output is correct
4 Correct 49 ms 17628 KB Output is correct
5 Correct 50 ms 17656 KB Output is correct
6 Correct 39 ms 17656 KB Output is correct
7 Correct 23 ms 17016 KB Output is correct
8 Correct 38 ms 17656 KB Output is correct
9 Correct 72 ms 17656 KB Output is correct
10 Correct 51 ms 17784 KB Output is correct
11 Correct 28 ms 16800 KB Output is correct
12 Correct 28 ms 16800 KB Output is correct
13 Correct 31 ms 16800 KB Output is correct
14 Correct 30 ms 16888 KB Output is correct
15 Correct 24 ms 16800 KB Output is correct
16 Correct 27 ms 16800 KB Output is correct
17 Correct 30 ms 16800 KB Output is correct
18 Correct 32 ms 16800 KB Output is correct
19 Correct 28 ms 16952 KB Output is correct
20 Correct 25 ms 16888 KB Output is correct
21 Correct 27 ms 16800 KB Output is correct
22 Correct 22 ms 16760 KB Output is correct
23 Correct 28 ms 16800 KB Output is correct
24 Correct 35 ms 16800 KB Output is correct
25 Correct 24 ms 16800 KB Output is correct
26 Correct 43 ms 17288 KB Output is correct
27 Correct 65 ms 17656 KB Output is correct
28 Correct 84 ms 17696 KB Output is correct
29 Correct 237 ms 17756 KB Output is correct
30 Correct 257 ms 17656 KB Output is correct
31 Correct 62 ms 17628 KB Output is correct
32 Correct 39 ms 16792 KB Output is correct
33 Correct 69 ms 17492 KB Output is correct
34 Correct 83 ms 17644 KB Output is correct
35 Correct 35 ms 16928 KB Output is correct
36 Correct 59 ms 17700 KB Output is correct
37 Correct 85 ms 17736 KB Output is correct
38 Correct 90 ms 17696 KB Output is correct
39 Correct 37 ms 17404 KB Output is correct
40 Correct 31 ms 16800 KB Output is correct
41 Correct 223 ms 17916 KB Output is correct
42 Correct 96 ms 17688 KB Output is correct
43 Correct 145 ms 17696 KB Output is correct
44 Correct 92 ms 17748 KB Output is correct
45 Correct 78 ms 17656 KB Output is correct
46 Correct 236 ms 17736 KB Output is correct
47 Correct 72 ms 17660 KB Output is correct
48 Correct 123 ms 17736 KB Output is correct
49 Correct 90 ms 18308 KB Output is correct
50 Correct 1047 ms 18464 KB Output is correct
51 Correct 1093 ms 18336 KB Output is correct
52 Correct 937 ms 18332 KB Output is correct
53 Correct 1014 ms 18512 KB Output is correct
54 Correct 1041 ms 18336 KB Output is correct
55 Correct 1091 ms 18336 KB Output is correct
56 Correct 931 ms 18372 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 16760 KB Output is correct
2 Correct 30 ms 16800 KB Output is correct
3 Correct 30 ms 16840 KB Output is correct
4 Correct 26 ms 16800 KB Output is correct
5 Correct 18 ms 16764 KB Output is correct
6 Correct 33 ms 16760 KB Output is correct
7 Correct 23 ms 16800 KB Output is correct
8 Correct 23 ms 16796 KB Output is correct
9 Correct 59 ms 17528 KB Output is correct
10 Correct 28 ms 17144 KB Output is correct
11 Correct 41 ms 17784 KB Output is correct
12 Correct 49 ms 17628 KB Output is correct
13 Correct 50 ms 17656 KB Output is correct
14 Correct 39 ms 17656 KB Output is correct
15 Correct 23 ms 17016 KB Output is correct
16 Correct 38 ms 17656 KB Output is correct
17 Correct 72 ms 17656 KB Output is correct
18 Correct 51 ms 17784 KB Output is correct
19 Correct 28 ms 16800 KB Output is correct
20 Correct 28 ms 16800 KB Output is correct
21 Correct 31 ms 16800 KB Output is correct
22 Correct 30 ms 16888 KB Output is correct
23 Correct 24 ms 16800 KB Output is correct
24 Correct 27 ms 16800 KB Output is correct
25 Correct 30 ms 16800 KB Output is correct
26 Correct 32 ms 16800 KB Output is correct
27 Correct 28 ms 16952 KB Output is correct
28 Correct 25 ms 16888 KB Output is correct
29 Correct 27 ms 16800 KB Output is correct
30 Correct 22 ms 16760 KB Output is correct
31 Correct 28 ms 16800 KB Output is correct
32 Correct 35 ms 16800 KB Output is correct
33 Correct 24 ms 16800 KB Output is correct
34 Correct 43 ms 17288 KB Output is correct
35 Correct 65 ms 17656 KB Output is correct
36 Correct 84 ms 17696 KB Output is correct
37 Correct 237 ms 17756 KB Output is correct
38 Correct 257 ms 17656 KB Output is correct
39 Correct 62 ms 17628 KB Output is correct
40 Correct 39 ms 16792 KB Output is correct
41 Correct 69 ms 17492 KB Output is correct
42 Correct 83 ms 17644 KB Output is correct
43 Correct 35 ms 16928 KB Output is correct
44 Correct 59 ms 17700 KB Output is correct
45 Correct 85 ms 17736 KB Output is correct
46 Correct 90 ms 17696 KB Output is correct
47 Correct 37 ms 17404 KB Output is correct
48 Correct 31 ms 16800 KB Output is correct
49 Correct 223 ms 17916 KB Output is correct
50 Correct 96 ms 17688 KB Output is correct
51 Correct 145 ms 17696 KB Output is correct
52 Correct 92 ms 17748 KB Output is correct
53 Correct 78 ms 17656 KB Output is correct
54 Correct 236 ms 17736 KB Output is correct
55 Correct 72 ms 17660 KB Output is correct
56 Correct 123 ms 17736 KB Output is correct
57 Correct 90 ms 18308 KB Output is correct
58 Correct 1047 ms 18464 KB Output is correct
59 Correct 1093 ms 18336 KB Output is correct
60 Correct 937 ms 18332 KB Output is correct
61 Correct 1014 ms 18512 KB Output is correct
62 Correct 1041 ms 18336 KB Output is correct
63 Correct 1091 ms 18336 KB Output is correct
64 Correct 931 ms 18372 KB Output is correct
65 Correct 29 ms 16800 KB Output is correct
66 Correct 29 ms 16800 KB Output is correct
67 Incorrect 1224 ms 18592 KB Output isn't correct
68 Halted 0 ms 0 KB -