oj.uz

Submission #93140

# Submission time Handle Problem Language Result Execution time Memory
93140 2019-01-06T15:11:03 Z SamAnd Chessboard (IZhO18_chessboard) C++14
70 / 100
 1266 ms 1916 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;
    if (x1 == x2 && y1 == y2)
        return sevv(x1, y1, t);
    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;
    long long xx = 0;

    if (xm1 - xm2 == t + 1)
    {
        if (sevv(x1, y1, t))
            xx = (x2 - x1 + 1);
        goto kovx;
    }
    // x1; xm1 - 1
    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);

    kovx:

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

    kovy:

    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 main()
{
    //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:146:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &n, &m);
     ~~~~~^~~~~~~~~~~~~~~~
chessboard.cpp:149:14: 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 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 380 KB Output is correct
8 Correct 2 ms 256 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 1272 KB Output is correct
2 Correct 9 ms 632 KB Output is correct
3 Correct 19 ms 892 KB Output is correct
4 Correct 21 ms 1016 KB Output is correct
5 Correct 26 ms 1144 KB Output is correct
6 Correct 17 ms 888 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 17 ms 888 KB Output is correct
9 Correct 41 ms 1684 KB Output is correct
10 Correct 24 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 256 KB Output is correct
3 Correct 2 ms 252 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 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 348 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 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 256 KB Output is correct
3 Correct 2 ms 252 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 256 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 348 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 15 ms 760 KB Output is correct
17 Correct 33 ms 1656 KB Output is correct
18 Correct 51 ms 1912 KB Output is correct
19 Correct 179 ms 1740 KB Output is correct
20 Correct 194 ms 1912 KB Output is correct
21 Correct 33 ms 1528 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 34 ms 1116 KB Output is correct
24 Correct 48 ms 1784 KB Output is correct
25 Correct 8 ms 380 KB Output is correct
26 Correct 30 ms 1144 KB Output is correct
27 Correct 44 ms 1400 KB Output is correct
28 Correct 50 ms 1784 KB Output is correct
29 Correct 15 ms 760 KB Output is correct
30 Correct 3 ms 376 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 1272 KB Output is correct
2 Correct 9 ms 632 KB Output is correct
3 Correct 19 ms 892 KB Output is correct
4 Correct 21 ms 1016 KB Output is correct
5 Correct 26 ms 1144 KB Output is correct
6 Correct 17 ms 888 KB Output is correct
7 Correct 5 ms 376 KB Output is correct
8 Correct 17 ms 888 KB Output is correct
9 Correct 41 ms 1684 KB Output is correct
10 Correct 24 ms 1144 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 256 KB Output is correct
13 Correct 2 ms 252 KB Output is correct
14 Correct 2 ms 376 KB Output is correct
15 Correct 2 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 256 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 348 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 256 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 15 ms 760 KB Output is correct
27 Correct 33 ms 1656 KB Output is correct
28 Correct 51 ms 1912 KB Output is correct
29 Correct 179 ms 1740 KB Output is correct
30 Correct 194 ms 1912 KB Output is correct
31 Correct 33 ms 1528 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 34 ms 1116 KB Output is correct
34 Correct 48 ms 1784 KB Output is correct
35 Correct 8 ms 380 KB Output is correct
36 Correct 30 ms 1144 KB Output is correct
37 Correct 44 ms 1400 KB Output is correct
38 Correct 50 ms 1784 KB Output is correct
39 Correct 15 ms 760 KB Output is correct
40 Correct 3 ms 376 KB Output is correct
41 Correct 149 ms 1652 KB Output is correct
42 Correct 57 ms 1784 KB Output is correct
43 Correct 90 ms 1628 KB Output is correct
44 Correct 53 ms 1784 KB Output is correct
45 Correct 46 ms 1784 KB Output is correct
46 Correct 167 ms 1808 KB Output is correct
47 Correct 40 ms 1656 KB Output is correct
48 Correct 71 ms 1632 KB Output is correct
49 Correct 50 ms 1656 KB Output is correct
50 Correct 735 ms 1776 KB Output is correct
51 Correct 776 ms 1912 KB Output is correct
52 Correct 730 ms 1784 KB Output is correct
53 Correct 764 ms 1860 KB Output is correct
54 Correct 717 ms 1656 KB Output is correct
55 Correct 806 ms 1916 KB Output is correct
56 Correct 697 ms 1784 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 256 KB Output is correct
4 Correct 2 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 380 KB Output is correct
8 Correct 2 ms 256 KB Output is correct
9 Correct 29 ms 1272 KB Output is correct
10 Correct 9 ms 632 KB Output is correct
11 Correct 19 ms 892 KB Output is correct
12 Correct 21 ms 1016 KB Output is correct
13 Correct 26 ms 1144 KB Output is correct
14 Correct 17 ms 888 KB Output is correct
15 Correct 5 ms 376 KB Output is correct
16 Correct 17 ms 888 KB Output is correct
17 Correct 41 ms 1684 KB Output is correct
18 Correct 24 ms 1144 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 252 KB Output is correct
22 Correct 2 ms 376 KB Output is correct
23 Correct 2 ms 376 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 376 KB Output is correct
26 Correct 2 ms 256 KB Output is correct
27 Correct 2 ms 256 KB Output is correct
28 Correct 2 ms 348 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 256 KB Output is correct
31 Correct 2 ms 504 KB Output is correct
32 Correct 2 ms 376 KB Output is correct
33 Correct 2 ms 376 KB Output is correct
34 Correct 15 ms 760 KB Output is correct
35 Correct 33 ms 1656 KB Output is correct
36 Correct 51 ms 1912 KB Output is correct
37 Correct 179 ms 1740 KB Output is correct
38 Correct 194 ms 1912 KB Output is correct
39 Correct 33 ms 1528 KB Output is correct
40 Correct 2 ms 376 KB Output is correct
41 Correct 34 ms 1116 KB Output is correct
42 Correct 48 ms 1784 KB Output is correct
43 Correct 8 ms 380 KB Output is correct
44 Correct 30 ms 1144 KB Output is correct
45 Correct 44 ms 1400 KB Output is correct
46 Correct 50 ms 1784 KB Output is correct
47 Correct 15 ms 760 KB Output is correct
48 Correct 3 ms 376 KB Output is correct
49 Correct 149 ms 1652 KB Output is correct
50 Correct 57 ms 1784 KB Output is correct
51 Correct 90 ms 1628 KB Output is correct
52 Correct 53 ms 1784 KB Output is correct
53 Correct 46 ms 1784 KB Output is correct
54 Correct 167 ms 1808 KB Output is correct
55 Correct 40 ms 1656 KB Output is correct
56 Correct 71 ms 1632 KB Output is correct
57 Correct 50 ms 1656 KB Output is correct
58 Correct 735 ms 1776 KB Output is correct
59 Correct 776 ms 1912 KB Output is correct
60 Correct 730 ms 1784 KB Output is correct
61 Correct 764 ms 1860 KB Output is correct
62 Correct 717 ms 1656 KB Output is correct
63 Correct 806 ms 1916 KB Output is correct
64 Correct 697 ms 1784 KB Output is correct
65 Correct 2 ms 376 KB Output is correct
66 Correct 2 ms 376 KB Output is correct
67 Incorrect 1266 ms 1784 KB Output isn't correct
68 Halted 0 ms 0 KB -