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Submission #172806

# Submission time Handle Problem Language Result Execution time Memory
172806 2020-01-02T16:21:47 Z muhammad_hokimiyon Chessboard (IZhO18_chessboard) C++14
47 / 100
 2000 ms 5224 KB 
#include <bits/stdc++.h>

#pragma GCC optimize("Ofast")

#define fi first
#define se second
#define ll long long

using namespace std;

const int N = 1e5 + 7;
const int M = 23;
const int mod = 998244353;

ll n,k;
ll A[N];
ll B[N];
ll C[N];
ll D[N];

ll f( ll x , ll y , ll div )
{
    ll x1 = y / div;
    ll y1 = x / div;
    x1 = x1 * y1 + 1;
    x1 /= 2;
    x1 *= div * div;
    ll a = y % div;
    ll b = x % div;
    if( ((y - 1) / div % 2 == 0 && 1 / div % 2 == 0) || y < div ){
        x1 += ((x / div + 1) / 2) * div * a;
    }else{
        x1 += x / div / 2 * div * a;
    }
    if( ((x - 1) / div % 2 == 0) ){
        x1 += (y / div + 1) / 2 * div * b;
    }else{
        x1 += y / div / 2 * div * b;
    }
    if( ((x - 1) / div % 2 == 1 && (y - 1) / div % 2 == 1) || ((x - 1) / div % 2 == 0 && (y - 1) / div % 2 == 0) ){
        x1 += (x % div) * (y % div);
    }
    //cout << x << " " << y << " " << div << " " << x1 << " " << fg[x][y] << "\n";
    return x1;
}

void solve1()
{
    cin >> n >> k;
    vector < ll > div;
    for( int i = 1; i < n; i++ ){
        if( n % i == 0 )div.push_back(i);
    }
    for( int i = 0; i < k; i++ ){
        cin >> A[i] >> B[i] >> C[i] >> D[i];
    }
    ll ans = 1e14;
    for( int i = 0; i < (int)div.size(); i++ ){
        ll nn = n / div[i];
        ll fg = div[i] * div[i];
        ll B1 = (nn + 1) / 2;
        ll B2 = nn / 2;
        B1 *= fg;
        B2 *= fg;
        B1 *= (nn + 1) / 2;
        B2 *= nn / 2;
        B1 += B2;
        ll B3 = (nn) / 2;
        ll B4 = (nn + 1) / 2;
        B3 *= fg;
        B4 *= fg;
        B3 *= (nn + 1) / 2;
        B4 *= (nn) / 2;
        B3 += B4;
        vector < ll > w(k , 0);
        vector < ll > b(k , 0);
        for( int j = 0; j < k; j++ ){
            ll x = f(C[j] , D[j] , div[i]) - f(C[j] , B[j] - 1 , div[i]) -
            f(A[j] - 1, D[j] , div[i]) + f(A[j] - 1 , B[j] - 1 , div[i]);
            ll y = (C[j] - A[j] + 1) * (D[j] - B[j] + 1);
            w[j] = y - x;
            b[j] = x;
        }
        ll x = 0;
        ll y = 0;
        //cout << B1 << " " << B3 << "\n";
        for( int j = 0; j < k; j++ ){
            B1 -= b[j];
            x += w[j];
            y += b[j];
            B3 -= w[j];
            //if( div[i] == 1 )cout << b[j] << " ";
        }
        //cout << "\n";
        //cout << B1 + x << " " << B3 + y << " " << div[i] << "\n";
        ans = min(ans , B1 + x);
        ans = min(ans , B3 + y);
    }
    cout << ans;
}

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

    int cghf = 1;//cin >> cghf;
    while( cghf-- ){
        solve1();
    }
}

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 3 ms 376 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 3 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 49 ms 3360 KB Output is correct
2 Correct 11 ms 1116 KB Output is correct
3 Correct 31 ms 2168 KB Output is correct
4 Correct 34 ms 2552 KB Output is correct
5 Correct 41 ms 2936 KB Output is correct
6 Correct 28 ms 2040 KB Output is correct
7 Correct 8 ms 632 KB Output is correct
8 Correct 28 ms 2040 KB Output is correct
9 Correct 67 ms 4600 KB Output is correct
10 Correct 39 ms 2808 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 4 ms 376 KB Output is correct
5 Correct 3 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 4 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 376 KB Output is correct
13 Correct 4 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 3 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 4 ms 376 KB Output is correct
5 Correct 3 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 4 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 376 KB Output is correct
13 Correct 4 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 35 ms 1652 KB Output is correct
17 Correct 55 ms 4252 KB Output is correct
18 Correct 120 ms 5036 KB Output is correct
19 Correct 689 ms 4816 KB Output is correct
20 Correct 770 ms 5224 KB Output is correct
21 Correct 53 ms 4216 KB Output is correct
22 Correct 4 ms 376 KB Output is correct
23 Correct 100 ms 2576 KB Output is correct
24 Correct 110 ms 4600 KB Output is correct
25 Correct 22 ms 760 KB Output is correct
26 Correct 72 ms 3068 KB Output is correct
27 Correct 124 ms 3580 KB Output is correct
28 Correct 116 ms 4884 KB Output is correct
29 Correct 21 ms 1916 KB Output is correct
30 Correct 5 ms 504 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 3360 KB Output is correct
2 Correct 11 ms 1116 KB Output is correct
3 Correct 31 ms 2168 KB Output is correct
4 Correct 34 ms 2552 KB Output is correct
5 Correct 41 ms 2936 KB Output is correct
6 Correct 28 ms 2040 KB Output is correct
7 Correct 8 ms 632 KB Output is correct
8 Correct 28 ms 2040 KB Output is correct
9 Correct 67 ms 4600 KB Output is correct
10 Correct 39 ms 2808 KB Output is correct
11 Correct 3 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 4 ms 376 KB Output is correct
15 Correct 3 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 4 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 376 KB Output is correct
23 Correct 4 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 35 ms 1652 KB Output is correct
27 Correct 55 ms 4252 KB Output is correct
28 Correct 120 ms 5036 KB Output is correct
29 Correct 689 ms 4816 KB Output is correct
30 Correct 770 ms 5224 KB Output is correct
31 Correct 53 ms 4216 KB Output is correct
32 Correct 4 ms 376 KB Output is correct
33 Correct 100 ms 2576 KB Output is correct
34 Correct 110 ms 4600 KB Output is correct
35 Correct 22 ms 760 KB Output is correct
36 Correct 72 ms 3068 KB Output is correct
37 Correct 124 ms 3580 KB Output is correct
38 Correct 116 ms 4884 KB Output is correct
39 Correct 21 ms 1916 KB Output is correct
40 Correct 5 ms 504 KB Output is correct
41 Correct 571 ms 4420 KB Output is correct
42 Correct 128 ms 4776 KB Output is correct
43 Correct 290 ms 4348 KB Output is correct
44 Correct 118 ms 4696 KB Output is correct
45 Correct 76 ms 4984 KB Output is correct
46 Correct 641 ms 4940 KB Output is correct
47 Correct 67 ms 4344 KB Output is correct
48 Correct 210 ms 4508 KB Output is correct
49 Correct 109 ms 4328 KB Output is correct
50 Execution timed out 2065 ms 4916 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 3 ms 376 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 3 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 49 ms 3360 KB Output is correct
10 Correct 11 ms 1116 KB Output is correct
11 Correct 31 ms 2168 KB Output is correct
12 Correct 34 ms 2552 KB Output is correct
13 Correct 41 ms 2936 KB Output is correct
14 Correct 28 ms 2040 KB Output is correct
15 Correct 8 ms 632 KB Output is correct
16 Correct 28 ms 2040 KB Output is correct
17 Correct 67 ms 4600 KB Output is correct
18 Correct 39 ms 2808 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 4 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 4 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 376 KB Output is correct
31 Correct 4 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 35 ms 1652 KB Output is correct
35 Correct 55 ms 4252 KB Output is correct
36 Correct 120 ms 5036 KB Output is correct
37 Correct 689 ms 4816 KB Output is correct
38 Correct 770 ms 5224 KB Output is correct
39 Correct 53 ms 4216 KB Output is correct
40 Correct 4 ms 376 KB Output is correct
41 Correct 100 ms 2576 KB Output is correct
42 Correct 110 ms 4600 KB Output is correct
43 Correct 22 ms 760 KB Output is correct
44 Correct 72 ms 3068 KB Output is correct
45 Correct 124 ms 3580 KB Output is correct
46 Correct 116 ms 4884 KB Output is correct
47 Correct 21 ms 1916 KB Output is correct
48 Correct 5 ms 504 KB Output is correct
49 Correct 571 ms 4420 KB Output is correct
50 Correct 128 ms 4776 KB Output is correct
51 Correct 290 ms 4348 KB Output is correct
52 Correct 118 ms 4696 KB Output is correct
53 Correct 76 ms 4984 KB Output is correct
54 Correct 641 ms 4940 KB Output is correct
55 Correct 67 ms 4344 KB Output is correct
56 Correct 210 ms 4508 KB Output is correct
57 Correct 109 ms 4328 KB Output is correct
58 Execution timed out 2065 ms 4916 KB Time limit exceeded
59 Halted 0 ms 0 KB -