oj.uz

Submission #334513

# Submission time Handle Problem Language Result Execution time Memory
334513 2020-12-09T09:53:15 Z talant117408 Chessboard (IZhO18_chessboard) C++17
47 / 100
 2000 ms 6732 KB 
/*
    Code written by Talant I.D.
*/
  
#include <bits/stdc++.h>
  
using namespace std;
  
typedef long long ll;
typedef pair <int, int> pii;
typedef pair <ll, ll> pll;
  
#define precision(n) fixed << setprecision(n)
#define pb push_back
#define ub upper_bound
#define lb lower_bound
#define mp make_pair
#define eps (double)1e-9
#define PI 2*acos(0.0)
#define endl "\n"
#define sz(v) int((v).size())
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define do_not_disturb ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define OK cout << "OK" << endl;
  
inline bool isvowel(char ch){
    ch = tolower(ch);
    return (ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u');
}
  
inline bool isprime(int n){
    if(n < 2 || (n%2 == 0 && n != 2)) return false;
    for(int i = 3; i*i <= n; i++)
        if(n%i == 0) return false;
    return true;
}
 
class Union{
    private:
        vector <int> saizu, link;
    public:
        Union(int n){
            saizu.assign(n, 1); link.resize(n); 
            iota(all(link), 0);
        }
        int find(int n){
            if(link[n] == n) return n;
            return link[n] = find(link[n]);
        }
        int same(int a, int b){
            return find(a) == find(b);
        }
        void unite(int a, int b){
            if(same(a, b)) return;
             
            a = find(a); b = find(b);
            if(saizu[a] < saizu[b]) swap(a, b);
             
            saizu[a] += saizu[b];
            link[b] = a;
        }
        int getsize(int a){
            return saizu[find(a)];
        }
};
 
const int mod = 1e9+7;
 
ll mode(ll a){
    a %= mod;
    if(a < 0) a += mod;
    return a;
}
 
ll subt(ll a, ll b){
    return mode(mode(a)-mode(b));
}
 
ll add(ll a, ll b){
    return mode(mode(a)+mode(b));
}
 
ll mult(ll a, ll b){
    return mode(mode(a)*mode(b));
}
 
ll binpow(ll a, ll b){
    ll res = 1;
    while(b){
        if(b&1) res = mult(res, a);
        a = mult(a, a);
        b >>= 1;
    }
    return res;
}

#define vl vector <ll> 

const int N = 1e5+7;
ll n, k;

ll rect_size(ll x1, ll y1, ll x2, ll y2){
    return (x2-x1+1)*(y2-y1+1);
}

ll pref(ll x, ll y, ll div){
    ll res = 0;
    ll x_full = x-(x+1)%div, y_full = y-(y+1)%div;
    ll full_s1 = (x_full+1)/div, full_s2 = (y_full+1)/div;
    res += ((full_s1*full_s2)&1 ? full_s1*full_s2/2+1 : full_s1*full_s2/2)*div*div;
    
    ll tmp;
    if(((y_full+1)/div)&1){
        int flag = x/div+y_full/div;
        if(flag&1){
            res += ((x+1)%div)*((y_full+1)/div/2)*div;
        }
        else{
            res += ((x+1)%div)*((y_full+1)/div/2+1)*div;
        }
    }
    else{
        tmp = (y_full+1)/2*((x+1)%div);
        res += tmp;
    }
    if(((x_full+1)/div)&1){
        int flag = y/div+x_full/div;
        if(flag&1){
            res += ((y+1)%div)*((x_full+1)/2/div)*div;
        }
        else{
            res += ((y+1)%div)*((x_full+1)/div/2+1)*div;
        }
    }
    else{
        tmp = (x_full+1)/2*((y+1)%div);
        res += tmp;
    }
    
    int flag = x/div+y/div;
    if(!(flag&1)){
        res += rect_size(x_full+1, y_full+1, x, y);
    }
    
    return res;
}

ll calc1(ll div, vl x1, vl y1, vl x2, vl y2){
    ll to_white = 0, to_black = ((n*n/div/div)&1 ? (n*n/div/div/2+1)*div*div : (n*n/2));
    for(ll i = 0; i < k; i++){
        ll blacks_in = pref(x2[i], y2[i], div)-(x1[i]-1 > -1 ? pref(x1[i]-1, y2[i], div) : 0)-(y1[i]-1 > -1 ? pref(x2[i], y1[i]-1, div) : 0)+
                      ((x1[i]-1 > -1) && (y1[i]-1 > -1) ? pref(x1[i]-1, y1[i]-1, div) : 0);
        to_black -= blacks_in;
        to_white += rect_size(x1[i], y1[i], x2[i], y2[i])-blacks_in;
    }
    
    return to_white+to_black;
}

int main(){
    do_not_disturb
    
    ll ans = 9e18, i;
    cin >> n >> k;
    vector <ll> x1(k), y1(k), x2(k), y2(k);
    
    for(i = 0; i < k; i++){
        cin >> x1[i] >> y1[i] >> x2[i] >> y2[i];
        x1[i]--; y1[i]--; x2[i]--; y2[i]--;
    }
    
    for(i = 1; i*i <= n; i++){
        if(n%i == 0){
            auto tmp = calc1(i, x1, y1, x2, y2);
            ans = min(ans, min(tmp, n*n-tmp));
            if(i > 1){
                tmp = calc1(n/i, x1, y1, x2, y2);
                ans = min(ans, min(tmp, n*n-tmp));
            }
        }
    }
    
    cout << ans << endl;
    
    return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 0 ms 364 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 4332 KB Output is correct
2 Correct 10 ms 1388 KB Output is correct
3 Correct 25 ms 2796 KB Output is correct
4 Correct 26 ms 3180 KB Output is correct
5 Correct 34 ms 3820 KB Output is correct
6 Correct 22 ms 2540 KB Output is correct
7 Correct 5 ms 768 KB Output is correct
8 Correct 22 ms 2540 KB Output is correct
9 Correct 56 ms 5996 KB Output is correct
10 Correct 31 ms 3436 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 1 ms 364 KB Output is correct
3 Correct 1 ms 364 KB Output is correct
4 Correct 2 ms 364 KB Output is correct
5 Correct 1 ms 364 KB Output is correct
6 Correct 1 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Correct 1 ms 364 KB Output is correct
10 Correct 1 ms 364 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 2 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 25 ms 2100 KB Output is correct
17 Correct 45 ms 5740 KB Output is correct
18 Correct 92 ms 6604 KB Output is correct
19 Correct 484 ms 6008 KB Output is correct
20 Correct 543 ms 6732 KB Output is correct
21 Correct 43 ms 5484 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 70 ms 3044 KB Output is correct
24 Correct 82 ms 5996 KB Output is correct
25 Correct 14 ms 896 KB Output is correct
26 Correct 51 ms 3948 KB Output is correct
27 Correct 89 ms 4636 KB Output is correct
28 Correct 89 ms 6380 KB Output is correct
29 Correct 18 ms 2412 KB Output is correct
30 Correct 3 ms 492 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 38 ms 4332 KB Output is correct
2 Correct 10 ms 1388 KB Output is correct
3 Correct 25 ms 2796 KB Output is correct
4 Correct 26 ms 3180 KB Output is correct
5 Correct 34 ms 3820 KB Output is correct
6 Correct 22 ms 2540 KB Output is correct
7 Correct 5 ms 768 KB Output is correct
8 Correct 22 ms 2540 KB Output is correct
9 Correct 56 ms 5996 KB Output is correct
10 Correct 31 ms 3436 KB Output is correct
11 Correct 1 ms 364 KB Output is correct
12 Correct 1 ms 364 KB Output is correct
13 Correct 1 ms 364 KB Output is correct
14 Correct 2 ms 364 KB Output is correct
15 Correct 1 ms 364 KB Output is correct
16 Correct 1 ms 364 KB Output is correct
17 Correct 1 ms 364 KB Output is correct
18 Correct 1 ms 364 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 1 ms 364 KB Output is correct
23 Correct 2 ms 364 KB Output is correct
24 Correct 2 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 25 ms 2100 KB Output is correct
27 Correct 45 ms 5740 KB Output is correct
28 Correct 92 ms 6604 KB Output is correct
29 Correct 484 ms 6008 KB Output is correct
30 Correct 543 ms 6732 KB Output is correct
31 Correct 43 ms 5484 KB Output is correct
32 Correct 2 ms 364 KB Output is correct
33 Correct 70 ms 3044 KB Output is correct
34 Correct 82 ms 5996 KB Output is correct
35 Correct 14 ms 896 KB Output is correct
36 Correct 51 ms 3948 KB Output is correct
37 Correct 89 ms 4636 KB Output is correct
38 Correct 89 ms 6380 KB Output is correct
39 Correct 18 ms 2412 KB Output is correct
40 Correct 3 ms 492 KB Output is correct
41 Correct 428 ms 5660 KB Output is correct
42 Correct 102 ms 6252 KB Output is correct
43 Correct 224 ms 5612 KB Output is correct
44 Correct 94 ms 6092 KB Output is correct
45 Correct 60 ms 6508 KB Output is correct
46 Correct 486 ms 6200 KB Output is correct
47 Correct 52 ms 5740 KB Output is correct
48 Correct 161 ms 5840 KB Output is correct
49 Correct 86 ms 5616 KB Output is correct
50 Execution timed out 2082 ms 6356 KB Time limit exceeded
51 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 1 ms 364 KB Output is correct
8 Correct 0 ms 364 KB Output is correct
9 Correct 38 ms 4332 KB Output is correct
10 Correct 10 ms 1388 KB Output is correct
11 Correct 25 ms 2796 KB Output is correct
12 Correct 26 ms 3180 KB Output is correct
13 Correct 34 ms 3820 KB Output is correct
14 Correct 22 ms 2540 KB Output is correct
15 Correct 5 ms 768 KB Output is correct
16 Correct 22 ms 2540 KB Output is correct
17 Correct 56 ms 5996 KB Output is correct
18 Correct 31 ms 3436 KB Output is correct
19 Correct 1 ms 364 KB Output is correct
20 Correct 1 ms 364 KB Output is correct
21 Correct 1 ms 364 KB Output is correct
22 Correct 2 ms 364 KB Output is correct
23 Correct 1 ms 364 KB Output is correct
24 Correct 1 ms 364 KB Output is correct
25 Correct 1 ms 364 KB Output is correct
26 Correct 1 ms 364 KB Output is correct
27 Correct 1 ms 364 KB Output is correct
28 Correct 1 ms 364 KB Output is correct
29 Correct 1 ms 364 KB Output is correct
30 Correct 1 ms 364 KB Output is correct
31 Correct 2 ms 364 KB Output is correct
32 Correct 2 ms 364 KB Output is correct
33 Correct 1 ms 364 KB Output is correct
34 Correct 25 ms 2100 KB Output is correct
35 Correct 45 ms 5740 KB Output is correct
36 Correct 92 ms 6604 KB Output is correct
37 Correct 484 ms 6008 KB Output is correct
38 Correct 543 ms 6732 KB Output is correct
39 Correct 43 ms 5484 KB Output is correct
40 Correct 2 ms 364 KB Output is correct
41 Correct 70 ms 3044 KB Output is correct
42 Correct 82 ms 5996 KB Output is correct
43 Correct 14 ms 896 KB Output is correct
44 Correct 51 ms 3948 KB Output is correct
45 Correct 89 ms 4636 KB Output is correct
46 Correct 89 ms 6380 KB Output is correct
47 Correct 18 ms 2412 KB Output is correct
48 Correct 3 ms 492 KB Output is correct
49 Correct 428 ms 5660 KB Output is correct
50 Correct 102 ms 6252 KB Output is correct
51 Correct 224 ms 5612 KB Output is correct
52 Correct 94 ms 6092 KB Output is correct
53 Correct 60 ms 6508 KB Output is correct
54 Correct 486 ms 6200 KB Output is correct
55 Correct 52 ms 5740 KB Output is correct
56 Correct 161 ms 5840 KB Output is correct
57 Correct 86 ms 5616 KB Output is correct
58 Execution timed out 2082 ms 6356 KB Time limit exceeded
59 Halted 0 ms 0 KB -