oj.uz

Submission #174041

# Submission time Handle Problem Language Result Execution time Memory
174041 2020-01-06T07:33:31 Z anakib1 Chessboard (IZhO18_chessboard) C++17
70 / 100
 2000 ms 3576 KB 
/*

Sviatoslav Bidzilia 2019
CF: anakib1

*/

#include <iostream>
#include <cmath>
#include <algorithm>
#include <stdio.h>
#include <cstring>
#include <string>
#include <cstdlib>
#include <vector>
#include <bitset>
#include <map>
#include <chrono>
#include <unordered_set>
#include <unordered_map>
#include <numeric>
#include <queue>
#include <ctime>
#include <stack>
#include <set>
#include <list>
#include <deque>
#include <iomanip>
#include <sstream>
#include <fstream>
#include <stdarg.h>
#include <utility>

using namespace std;

#define pb push_back
#define mp make_pair
#define ll long long
#define ull unisgned long long
#define ld long double
#define all(a) a.begin(), a.end()
#define SORT(a) sort(all(a))
#define pii pair<int, int>
#define tii triple<int, int, int>
#define e 1e-7
#define PI acos(-1)
#define inf 1e17
#define vi vector<int>
#define F first
#define S second
#define rng(x) for(int _ = 0; _ < (x); _++)
#define rngi(i, x) for(int i = 0; i < (x); i++)
#define rngsi(s, i, x) for(int i = (s); i <(x); i++)
#define int long long
template<typename A, typename B, typename C>
struct triple
{
	A X;
	B Y;
	C Z;
	triple(A a = 0, B b = 0, C c = 0) :X(a), Y(b), Z(c) {}
};
template<typename A, typename B, typename C>
triple<A, B, C> make_triple(A a = 0, B b = 0, C c = 0)
{
	return triple<A, B, C>(a, b, c);
}
template<typename A, typename B, typename C>
bool operator<(const triple<A, B, C>& a, const triple<A, B, C>& b)
{
	if (a.X != b.X)
		return a.X < b.X;
	if (a.Y != b.Y)
		return a.Y < b.Y;
	return a.Z < b.Z;
}
template<typename T, typename SS>
ostream& operator<<(ostream& ofs, const pair<T, SS>& p)
{
	ofs << "( " << p.F << " , " << p.S << " )";
	return ofs;
}
template<typename T>
void print(T a)
{
	for (auto i : a)
		cout << i << ' ';
	cout << '\n';
}
template<typename T>
T max(T a, T b, T c)
{
	return max(a, max(b, c));
}
template<typename T>
T min(T a, T b, T c)
{
	return min(a, min(b, c));
}
struct custom_hash
{
	static uint64_t splitmix64(uint64_t x)
	{
		x += 0x9e3779b97f4a7c15;
		x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
		x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
		return x ^ (x >> 31);
	}

	size_t operator()(uint64_t x) const
	{
		static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
		return splitmix64(x + FIXED_RANDOM);
	}
};
int sz, flx, fly, d, s, d1, d2;
int n;
int r;
int m;
int cntw, cntb, allb;
#define mxn (int)(1e5 + 11)
int X1[mxn], Y1[mxn], X2[mxn], Y2[mxn];
inline int sum1(int x, int y, int k)
{
	y--, x--;
	sz = k * k;
	flx = (x + 1) / k;
	fly = (y + 1) / k;
	int ans = (fly >> 1) * sz * flx;
	if (fly & 1)
	{
		ans += (flx >> 1) * sz;
		if (flx & 1)
			ans += sz;
	}
	if ((x + 1) % k)
	{
		d = (x + 1) % k;
		s = (flx + 1) & 1;
		ans += (fly >> 1) * k * d;
		if (fly & 1 && s)
			ans += k * d;
	}
	if ((y + 1) % k != 0)
	{
		d = (y + 1) % k;
		s = (fly + 1) & 1;
		ans += (flx >> 1) * k * d;
		if (flx & 1 && s)
			ans += k * d;
	}
	if ((x + 1) % k && (y + 1) % k)
	{
		d1 = (x + 1) % k;
		d2 = (y + 1) % k;
		s = (fly + flx) & 1;
		s ^= 1;
		if (s)
			ans += d1 * d2;
	}
	return ans;
}
inline int sum(int x, int y, int t, int k)
{
	if (t)
		return sum1(x, y, k);
	else
		return x * y - sum1(x, y, k);
}
inline int sumr(int x1, int y1, int x2, int y2, int t, int k)
{
	if (x1 == x2 && y1 == y2)
	{
		int x = x1 / k - 1;
		int y = y1 / k - 1;
		if (x1 % k)
			x++;
		if (y1 % k)
			y++;
		if (!t)
			return (x + y) & 1;
		else
			return (x + y + 1) & 1;
	}
	return sum(x2, y2, t, k) - (x1 > 1 ? sum(x1 - 1, y2, t, k) : 0) - (y1 > 1 ? sum(x2, y1 - 1, t, k) : 0) + (x1 > 1 && y1 > 1 ? sum(x1 - 1, y1 - 1, t, k) : 0);
}
inline int solve(int k, int t)
{
	int ans = 0;
	cntb = 0;
	cntw = 0;
	for(int i =0; i < m; i++)
	{
		r = sumr(X1[i], Y1[i], X2[i], Y2[i], t, k);
		cntb += r;
		cntw += (Y2[i] - Y1[i] + 1) * (X2[i] - X1[i] + 1) - r;
	}
	allb = sumr(1, 1, n, n, t, k);
	cntw += allb - cntb;
	return cntw;
}
signed main()
{
	//freopen(".in", "r", stdin);
	//freopen(".out", "w", stdout);
	srand(time(NULL));
	cin.tie(0);
	cout.tie(0);
	ios_base::sync_with_stdio(false);
	/*rng(20)
	{
		int a, b, c, d;
		cin >> a >> b >> c >> d;
		cout << sumr(a, b, c, d, 0, 3) << '\n';
	}*/
	scanf("%d%d", &n, &m);
	for (int i =0; i <m ;i++)
		scanf("%d%d%d%d", &Y1[i], &X1[i], &Y2[i], &X2[i]);
	int ans = min(solve(1, 0), solve(1,1));
	for (int d = 2; d * d <= n; d++)
		if (n % d == 0)
		{
			ans = min(ans, solve(d, 0), solve(d, 1));
			ans = min(ans, solve(n/d, 0), solve(n/d, 1));
		}

	cout << ans << '\n';
}

Compilation message

chessboard.cpp: In function 'long long int solve(long long int, long long int)':
chessboard.cpp:189:6: warning: unused variable 'ans' [-Wunused-variable]
  int ans = 0;
      ^~~
chessboard.cpp: In function 'int main()':
chessboard.cpp:216:22: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
  scanf("%d%d", &n, &m);
                ~~    ^
chessboard.cpp:216:22: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
chessboard.cpp:218:51: warning: format '%d' expects argument of type 'int*', but argument 2 has type 'long long int*' [-Wformat=]
   scanf("%d%d%d%d", &Y1[i], &X1[i], &Y2[i], &X2[i]);
                     ~~~~~~                        ^
chessboard.cpp:218:51: warning: format '%d' expects argument of type 'int*', but argument 3 has type 'long long int*' [-Wformat=]
chessboard.cpp:218:51: warning: format '%d' expects argument of type 'int*', but argument 4 has type 'long long int*' [-Wformat=]
chessboard.cpp:218:51: warning: format '%d' expects argument of type 'int*', but argument 5 has type 'long long int*' [-Wformat=]
chessboard.cpp:216:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~
chessboard.cpp:218:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d%d", &Y1[i], &X1[i], &Y2[i], &X2[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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 380 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 36 ms 2296 KB Output is correct
2 Correct 11 ms 948 KB Output is correct
3 Correct 24 ms 1528 KB Output is correct
4 Correct 25 ms 1784 KB Output is correct
5 Correct 32 ms 2224 KB Output is correct
6 Correct 21 ms 1404 KB Output is correct
7 Correct 6 ms 632 KB Output is correct
8 Correct 22 ms 1400 KB Output is correct
9 Correct 51 ms 3196 KB Output is correct
10 Correct 29 ms 1960 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 2 ms 380 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 504 KB Output is correct
10 Correct 3 ms 380 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 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 2 ms 380 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 504 KB Output is correct
10 Correct 3 ms 380 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Correct 2 ms 376 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 18 ms 1144 KB Output is correct
17 Correct 41 ms 2952 KB Output is correct
18 Correct 59 ms 3448 KB Output is correct
19 Correct 168 ms 3192 KB Output is correct
20 Correct 194 ms 3520 KB Output is correct
21 Correct 39 ms 2940 KB Output is correct
22 Correct 3 ms 376 KB Output is correct
23 Correct 37 ms 1784 KB Output is correct
24 Correct 56 ms 3192 KB Output is correct
25 Correct 9 ms 632 KB Output is correct
26 Correct 35 ms 2168 KB Output is correct
27 Correct 50 ms 2556 KB Output is correct
28 Correct 58 ms 3320 KB Output is correct
29 Correct 18 ms 1400 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 36 ms 2296 KB Output is correct
2 Correct 11 ms 948 KB Output is correct
3 Correct 24 ms 1528 KB Output is correct
4 Correct 25 ms 1784 KB Output is correct
5 Correct 32 ms 2224 KB Output is correct
6 Correct 21 ms 1404 KB Output is correct
7 Correct 6 ms 632 KB Output is correct
8 Correct 22 ms 1400 KB Output is correct
9 Correct 51 ms 3196 KB Output is correct
10 Correct 29 ms 1960 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 2 ms 380 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 504 KB Output is correct
20 Correct 3 ms 380 KB Output is correct
21 Correct 2 ms 376 KB Output is correct
22 Correct 2 ms 376 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 18 ms 1144 KB Output is correct
27 Correct 41 ms 2952 KB Output is correct
28 Correct 59 ms 3448 KB Output is correct
29 Correct 168 ms 3192 KB Output is correct
30 Correct 194 ms 3520 KB Output is correct
31 Correct 39 ms 2940 KB Output is correct
32 Correct 3 ms 376 KB Output is correct
33 Correct 37 ms 1784 KB Output is correct
34 Correct 56 ms 3192 KB Output is correct
35 Correct 9 ms 632 KB Output is correct
36 Correct 35 ms 2168 KB Output is correct
37 Correct 50 ms 2556 KB Output is correct
38 Correct 58 ms 3320 KB Output is correct
39 Correct 18 ms 1400 KB Output is correct
40 Correct 4 ms 376 KB Output is correct
41 Correct 151 ms 3028 KB Output is correct
42 Correct 64 ms 3280 KB Output is correct
43 Correct 93 ms 2936 KB Output is correct
44 Correct 62 ms 3192 KB Output is correct
45 Correct 63 ms 3448 KB Output is correct
46 Correct 170 ms 3192 KB Output is correct
47 Correct 50 ms 3068 KB Output is correct
48 Correct 81 ms 3064 KB Output is correct
49 Correct 59 ms 2936 KB Output is correct
50 Correct 679 ms 3320 KB Output is correct
51 Correct 719 ms 3448 KB Output is correct
52 Correct 669 ms 3324 KB Output is correct
53 Correct 714 ms 3448 KB Output is correct
54 Correct 660 ms 3180 KB Output is correct
55 Correct 742 ms 3576 KB Output is correct
56 Correct 643 ms 3064 KB Output is correct

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 380 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 36 ms 2296 KB Output is correct
10 Correct 11 ms 948 KB Output is correct
11 Correct 24 ms 1528 KB Output is correct
12 Correct 25 ms 1784 KB Output is correct
13 Correct 32 ms 2224 KB Output is correct
14 Correct 21 ms 1404 KB Output is correct
15 Correct 6 ms 632 KB Output is correct
16 Correct 22 ms 1400 KB Output is correct
17 Correct 51 ms 3196 KB Output is correct
18 Correct 29 ms 1960 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 2 ms 380 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 504 KB Output is correct
28 Correct 3 ms 380 KB Output is correct
29 Correct 2 ms 376 KB Output is correct
30 Correct 2 ms 376 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 18 ms 1144 KB Output is correct
35 Correct 41 ms 2952 KB Output is correct
36 Correct 59 ms 3448 KB Output is correct
37 Correct 168 ms 3192 KB Output is correct
38 Correct 194 ms 3520 KB Output is correct
39 Correct 39 ms 2940 KB Output is correct
40 Correct 3 ms 376 KB Output is correct
41 Correct 37 ms 1784 KB Output is correct
42 Correct 56 ms 3192 KB Output is correct
43 Correct 9 ms 632 KB Output is correct
44 Correct 35 ms 2168 KB Output is correct
45 Correct 50 ms 2556 KB Output is correct
46 Correct 58 ms 3320 KB Output is correct
47 Correct 18 ms 1400 KB Output is correct
48 Correct 4 ms 376 KB Output is correct
49 Correct 151 ms 3028 KB Output is correct
50 Correct 64 ms 3280 KB Output is correct
51 Correct 93 ms 2936 KB Output is correct
52 Correct 62 ms 3192 KB Output is correct
53 Correct 63 ms 3448 KB Output is correct
54 Correct 170 ms 3192 KB Output is correct
55 Correct 50 ms 3068 KB Output is correct
56 Correct 81 ms 3064 KB Output is correct
57 Correct 59 ms 2936 KB Output is correct
58 Correct 679 ms 3320 KB Output is correct
59 Correct 719 ms 3448 KB Output is correct
60 Correct 669 ms 3324 KB Output is correct
61 Correct 714 ms 3448 KB Output is correct
62 Correct 660 ms 3180 KB Output is correct
63 Correct 742 ms 3576 KB Output is correct
64 Correct 643 ms 3064 KB Output is correct
65 Correct 2 ms 376 KB Output is correct
66 Correct 2 ms 376 KB Output is correct
67 Execution timed out 2028 ms 3192 KB Time limit exceeded
68 Halted 0 ms 0 KB -