oj.uz

Submission #93168

# Submission time Handle Problem Language Result Execution time Memory
93168 2019-01-06T16:34:30 Z SamAnd Chessboard (IZhO18_chessboard) C++17
47 / 100
 2000 ms 4216 KB 
#include <iostream>
#include <cstdio>
using namespace std;
#define m_p make_pair
const int N = 100005;
struct ban
{
    int x, y;
    ban(){}
    ban(int x, int y)
    {
        this->x = x;
        this->y = y;
    }
};

int n;

int m;
pair<ban, ban> a[N];

bool vv;
bool sevv(int x, int y, int t)
{
    x = x / t;
    y = y / t;
    if ((x + y) % 2 == 0)
    {
        if (vv)
            return true;
        else
            return false;
    }
    else
    {
        if (vv)
            return false;
        else
            return true;
    }
}

long long sev(const pair<ban, ban>& a, int t)
{
    int x1 = a.first.x;
    int y1 = a.first.y;
    int x2 = a.second.x;
    int y2 = a.second.y;

    int xm1 = (x1 / t + 1) * t;
    if (x1 % t == 0)
        xm1 = x1;
    int xm2 = (x2 / t) * t - 1;
    if (x2 % t == t - 1)
        xm2 = x2;
    int ym1 = (y1 / t + 1) * t;
    if (y1 % t == 0)
        ym1 = y1;
    int ym2 = (y2 / t) * t - 1;
    if (y2 % t == t - 1)
        ym2 = y2;

    long long ans = 0;

    // y1; ym1 - 1
    // x1; xm1 - 1
    long long xx = 0;
    if (sevv(x1, y1, t))
        xx += (xm1 - x1);
    // xm1; xm2
    if (!sevv(xm1, y1, t))
        xx += ((((xm2 - xm1 + 1) / t) / 2) * t);
    else
        xx += ((((xm2 - xm1 + 1) / t) - (((xm2 - xm1 + 1) / t) / 2)) * t);
    // xm2 + 1; x2
    if (sevv(xm2 + 1, y1, t))
        xx += (x2 - xm2);
    if (xm1 - xm2 == t + 1)
    {
        xx = 0;
        if (sevv(x1, y1, t))
            xx = (x2 - x1 + 1);
    }
    ans += ((ym1 - y1) * xx);

    // ym1; ym2
    // x1; xm1 - 1
    xx = 0;
    if (sevv(x1, ym1, t))
        xx += (xm1 - x1);
    // xm1; xm2
    if (!sevv(xm1, ym1, t))
        xx += ((((xm2 - xm1 + 1) / t) / 2) * t);
    else
        xx += ((((xm2 - xm1 + 1) / t) - (((xm2 - xm1 + 1) / t) / 2)) * t);
    // xm2 + 1; x2
    if (sevv(xm2 + 1, ym1, t))
        xx += (x2 - xm2);
    if (xm1 - xm2 == t + 1)
    {
        xx = 0;
        if (sevv(x1, ym1, t))
            xx = (x2 - x1 + 1);
    }
    ans += ((((ym2 - ym1 + 1) / t) / 2) * ((x2 - x1 + 1) - xx) * t);
    ans += ((((ym2 - ym1 + 1) / t) - (((ym2 - ym1 + 1) / t) / 2)) * xx * t);

    // ym2 + 1; y2
    // x1; xm1 - 1
    xx = 0;
    if (sevv(x1, ym2 + 1, t))
        xx += (xm1 - x1);
    // xm1; xm2
    if (!sevv(xm1, ym2 + 1, t))
        xx += ((((xm2 - xm1 + 1) / t) / 2) * t);
    else
        xx += ((((xm2 - xm1 + 1) / t) - (((xm2 - xm1 + 1) / t) / 2)) * t);
    // xm2 + 1; x2
    if (sevv(xm2 + 1, ym2 + 1, t))
        xx += (x2 - xm2);
    if (xm1 - xm2 == t + 1)
    {
        xx = 0;
        if (sevv(x1, ym2 + 1, t))
            xx = (x2 - x1 + 1);
    }
    ans += ((y2 - ym2) * xx);

    if (ym1 - ym2 == t + 1)
    {
        ans = 0;
        xx = 0;
        if (sevv(x1, y1, t))
            xx += (xm1 - x1);
        // xm1; xm2
        if (!sevv(xm1, y1, t))
            xx += ((((xm2 - xm1 + 1) / t) / 2) * t);
        else
            xx += ((((xm2 - xm1 + 1) / t) - (((xm2 - xm1 + 1) / t) / 2)) * t);
        // xm2 + 1; x2
        if (sevv(xm2 + 1, y1, t))
            xx += (x2 - xm2);
        if (xm1 - xm2 == t + 1)
        {
            xx = 0;
            if (sevv(x1, y1, t))
                xx = (x2 - x1 + 1);
        }
        ans += (xx * (y2 - y1 + 1));
    }

    return ans;
}

long long spi(const pair<ban, ban>& a, int t)
{
    int x1 = a.first.x;
    int y1 = a.first.y;
    int x2 = a.second.x;
    int y2 = a.second.y;
    return 1LL * (x2 - x1 + 1) * (y2 - y1 + 1) - sev(a, t);
}

long long ans;
void stg(int t)
{
    vv = true;
    long long yans = 0;
    long long g = 0;
    for (int i = 0; i < m; ++i)
    {
        yans += (spi(a[i], t));
        g += (sev(a[i], t));
    }
    yans += (sev(m_p(ban(0, 0), ban(n - 1, n - 1)), t) - g);
    ans = min(ans, yans);
    vv = false;
    yans = 0;
    g = 0;
    for (int i = 0; i < m; ++i)
    {
        yans += (spi(a[i], t));
        g += (sev(a[i], t));
    }
    yans += (sev(m_p(ban(0, 0), ban(n - 1, n - 1)), t) - g);
    ans = min(ans, yans);
}

int b[8][8];
int main()
{
    /*vv = true;
    for (int i = 0; i < 6; ++i)
    {
        for (int j = 0; j < 6; ++j)
        {
            if (sevv(i, j, 1))
                b[i][j] = 1;
        }
    }
    for (int x1 = 0; x1 < 6; ++x1)
    {
        for (int x2 = x1; x2 < 6; ++x2)
        {
            for (int y1 = 0; y1 < 6; ++y1)
            {
                for (int y2 = y1; y2 < 6; ++y2)
                {
                    cout << x1 << ' ' << x2 << ' ' << y1 << ' ' << y2 << endl;
                    if (x1 == 4 && x2 == 4 && y1 == 0 && y2 == 4)
                        cout << "";
                    int ans1 = sev(m_p(ban(x1, y1), ban(x2, y2)), 1);
                    int ans2 = 0;
                    for (int i = x1; i <= x2; ++i)
                    {
                        for (int j = y1; j <= y2; ++j)
                        {
                            ans2 += b[i][j];
                        }
                    }
                    if (ans1 != ans2)
                        cout << "asdfdafjklshdfkjhaskjldfhakjl" << endl;
                }
            }
        }
    }*/
    //freopen("input2.txt", "r", stdin);
    scanf("%d%d", &n, &m);
    for (int i = 0; i < m; ++i)
    {
        scanf("%d%d%d%d", &a[i].first.x, &a[i].first.y, &a[i].second.x, &a[i].second.y);
        --a[i].first.x;
        --a[i].first.y;
        --a[i].second.x;
        --a[i].second.y;
    }
    ans = 1LL * n * n;
    for (int i = 1; i * i <= n; ++i)
    {
        if (n % i == 0)
        {
            if (i != n)
                stg(i);
            if (n / i != n)
                stg(n / i);
        }
    }
    cout << ans << endl;
    return 0;
}

Compilation message

chessboard.cpp: In function 'int main()':
chessboard.cpp:228:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~
chessboard.cpp:231:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d%d%d%d", &a[i].first.x, &a[i].first.y, &a[i].second.x, &a[i].second.y);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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 40 ms 1528 KB Output is correct
2 Correct 13 ms 740 KB Output is correct
3 Correct 26 ms 1016 KB Output is correct
4 Correct 29 ms 1272 KB Output is correct
5 Correct 35 ms 1400 KB Output is correct
6 Correct 23 ms 1144 KB Output is correct
7 Correct 6 ms 504 KB Output is correct
8 Correct 24 ms 1144 KB Output is correct
9 Correct 57 ms 2040 KB Output is correct
10 Correct 32 ms 1336 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 4 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 1 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 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 4 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 4 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 1 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 2 ms 376 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 256 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 3 ms 376 KB Output is correct
14 Correct 4 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 32 ms 888 KB Output is correct
17 Correct 47 ms 1756 KB Output is correct
18 Correct 112 ms 2000 KB Output is correct
19 Correct 677 ms 1752 KB Output is correct
20 Correct 766 ms 1912 KB Output is correct
21 Correct 46 ms 1708 KB Output is correct
22 Correct 4 ms 256 KB Output is correct
23 Correct 97 ms 1144 KB Output is correct
24 Correct 104 ms 1784 KB Output is correct
25 Correct 21 ms 504 KB Output is correct
26 Correct 64 ms 1272 KB Output is correct
27 Correct 114 ms 1528 KB Output is correct
28 Correct 104 ms 1912 KB Output is correct
29 Correct 20 ms 888 KB Output is correct
30 Correct 5 ms 376 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 40 ms 1528 KB Output is correct
2 Correct 13 ms 740 KB Output is correct
3 Correct 26 ms 1016 KB Output is correct
4 Correct 29 ms 1272 KB Output is correct
5 Correct 35 ms 1400 KB Output is correct
6 Correct 23 ms 1144 KB Output is correct
7 Correct 6 ms 504 KB Output is correct
8 Correct 24 ms 1144 KB Output is correct
9 Correct 57 ms 2040 KB Output is correct
10 Correct 32 ms 1336 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 4 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 1 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 2 ms 376 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 256 KB Output is correct
22 Correct 2 ms 256 KB Output is correct
23 Correct 3 ms 376 KB Output is correct
24 Correct 4 ms 376 KB Output is correct
25 Correct 3 ms 376 KB Output is correct
26 Correct 32 ms 888 KB Output is correct
27 Correct 47 ms 1756 KB Output is correct
28 Correct 112 ms 2000 KB Output is correct
29 Correct 677 ms 1752 KB Output is correct
30 Correct 766 ms 1912 KB Output is correct
31 Correct 46 ms 1708 KB Output is correct
32 Correct 4 ms 256 KB Output is correct
33 Correct 97 ms 1144 KB Output is correct
34 Correct 104 ms 1784 KB Output is correct
35 Correct 21 ms 504 KB Output is correct
36 Correct 64 ms 1272 KB Output is correct
37 Correct 114 ms 1528 KB Output is correct
38 Correct 104 ms 1912 KB Output is correct
39 Correct 20 ms 888 KB Output is correct
40 Correct 5 ms 376 KB Output is correct
41 Correct 557 ms 1656 KB Output is correct
42 Correct 112 ms 4088 KB Output is correct
43 Correct 285 ms 3576 KB Output is correct
44 Correct 109 ms 3960 KB Output is correct
45 Correct 63 ms 4216 KB Output is correct
46 Correct 714 ms 4088 KB Output is correct
47 Correct 56 ms 3704 KB Output is correct
48 Correct 201 ms 3704 KB Output is correct
49 Correct 101 ms 3576 KB Output is correct
50 Execution timed out 2054 ms 3832 KB Time limit exceeded
51 Halted 0 ms 0 KB -

Subtask #6
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 40 ms 1528 KB Output is correct
10 Correct 13 ms 740 KB Output is correct
11 Correct 26 ms 1016 KB Output is correct
12 Correct 29 ms 1272 KB Output is correct
13 Correct 35 ms 1400 KB Output is correct
14 Correct 23 ms 1144 KB Output is correct
15 Correct 6 ms 504 KB Output is correct
16 Correct 24 ms 1144 KB Output is correct
17 Correct 57 ms 2040 KB Output is correct
18 Correct 32 ms 1336 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 4 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 1 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 2 ms 376 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 256 KB Output is correct
30 Correct 2 ms 256 KB Output is correct
31 Correct 3 ms 376 KB Output is correct
32 Correct 4 ms 376 KB Output is correct
33 Correct 3 ms 376 KB Output is correct
34 Correct 32 ms 888 KB Output is correct
35 Correct 47 ms 1756 KB Output is correct
36 Correct 112 ms 2000 KB Output is correct
37 Correct 677 ms 1752 KB Output is correct
38 Correct 766 ms 1912 KB Output is correct
39 Correct 46 ms 1708 KB Output is correct
40 Correct 4 ms 256 KB Output is correct
41 Correct 97 ms 1144 KB Output is correct
42 Correct 104 ms 1784 KB Output is correct
43 Correct 21 ms 504 KB Output is correct
44 Correct 64 ms 1272 KB Output is correct
45 Correct 114 ms 1528 KB Output is correct
46 Correct 104 ms 1912 KB Output is correct
47 Correct 20 ms 888 KB Output is correct
48 Correct 5 ms 376 KB Output is correct
49 Correct 557 ms 1656 KB Output is correct
50 Correct 112 ms 4088 KB Output is correct
51 Correct 285 ms 3576 KB Output is correct
52 Correct 109 ms 3960 KB Output is correct
53 Correct 63 ms 4216 KB Output is correct
54 Correct 714 ms 4088 KB Output is correct
55 Correct 56 ms 3704 KB Output is correct
56 Correct 201 ms 3704 KB Output is correct
57 Correct 101 ms 3576 KB Output is correct
58 Execution timed out 2054 ms 3832 KB Time limit exceeded
59 Halted 0 ms 0 KB -