oj.uz

Submission #1112569

# Submission time Handle Problem Language Result Execution time Memory
1112569 2024-11-14T10:54:34 Z vjudge1 Chessboard (IZhO18_chessboard) C++17
47 / 100
 2000 ms 20296 KB 
//Dost SEFEROĞLU
#include <bits/stdc++.h>
#pragma GCC optimize("O3,unroll-loops")
using namespace std;
#define int long long
#define pii pair<int,int>
#define ff first
#define ss second
#define sp << " " << 
#define vi vector<int>
#define all(xx) xx.begin(),xx.end()
#define ps(xxx) cout << (xxx) << endl;
const int N = 5e2+1,inf = 1e16,MOD = 1e9+7; 
 

int t1[400001],lazy1[400001],t2[400001],lazy2[400001];
struct ST {
    int* t;
    int* lazy;

    ST(int* p1,int* p2) {
        t  = p1,lazy = p2;
    }
    inline void push(const int& node,const int& l,const int& r) {
        if (!lazy[node]) return;
        t[node] = (r-l+1)-t[node];
        if (l != r) {
            lazy[2*node]^=1;
            lazy[2*node+1]^=1;
        }
        lazy[node] = 0;
    }

    void update(int node,int l,int r,int L,int R) {
        push(node,l,r);
        if (l > R || r < L) return;
        if (l >= L && r <= R) {
            lazy[node]^=1;
            push(node,l,r);
            return;
        }
        int m = (l+r) >> 1;
        update(2*node,l,m,L,R),update(2*node+1,m+1,r,L,R);
        t[node] = t[2*node]+t[2*node+1];
    }

    int query(int node,int l,int r,int L,int R) {
        push(node,l,r);
        if (l > R || r < L) return 0;
        if (l >= L && r <= R) return t[node];
        int m = (l+r) >> 1;
        return query(2*node,l,m,L,R)+query(2*node+1,m+1,r,L,R); 
    }
    void clear() {
        fill(lazy,lazy+400001,0);
        fill(t,t+400001,0);
    }
};

void solve() { 
    int n,k;
    cin >> n >> k;
    vector<pii> upds[n+1];
    for (int i=1;i<=k;i++) {
        int x1,y1,x2,y2;
        cin >> x1 >> y1 >> x2 >> y2;
        upds[x1].push_back({y1,y2});
        if (x2 < n) upds[x2+1].push_back({y1,y2});
    }
    vi divs;
    for (int i=1;i<n;i++) if (n%i == 0) divs.push_back(i);
    int ans = inf;
    ST st1(t1,lazy1),st2(t2,lazy2);
    for (int d : divs) {
        st1.clear();
        st2.clear();
        int cur = 1;
        while (cur <= n) {
            if ((cur/d)%2) st2.update(1,1,n,cur,cur+d-1);
            else st1.update(1,1,n,cur,cur+d-1);
            cur+=d;
        }
        int need = 0;
        for (int j = 1;j<=n;j++) {
            for (auto it : upds[j]) {
                st1.update(1,1,n,it.ff,it.ss);
                st2.update(1,1,n,it.ff,it.ss);
            }
            if (((j-1)/d)%2 == 0) need+=st1.query(1,1,n,1,n);
            else need+=st2.query(1,1,n,1,n);
        }
        ans = min(ans,need);
        ans = min(ans,n*n-need);
    }
    cout << ans << endl;
}  
 
                
                            
signed main() { 
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    #ifdef Dodi
        freopen("in.txt","r",stdin);
        freopen("out.txt","w",stdout);
    #endif
    int t = 1;
    //cin >> t; 
    while (t --> 0) solve();
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 12880 KB Output is correct
2 Correct 6 ms 12880 KB Output is correct
3 Correct 5 ms 12880 KB Output is correct
4 Correct 5 ms 12984 KB Output is correct
5 Correct 3 ms 12880 KB Output is correct
6 Correct 7 ms 12988 KB Output is correct
7 Correct 3 ms 12880 KB Output is correct
8 Correct 4 ms 12980 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 17484 KB Output is correct
2 Correct 18 ms 14176 KB Output is correct
3 Correct 53 ms 17044 KB Output is correct
4 Correct 32 ms 15440 KB Output is correct
5 Correct 91 ms 17056 KB Output is correct
6 Correct 41 ms 15696 KB Output is correct
7 Correct 14 ms 13904 KB Output is correct
8 Correct 56 ms 15952 KB Output is correct
9 Correct 87 ms 18256 KB Output is correct
10 Correct 52 ms 16376 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12880 KB Output is correct
2 Correct 16 ms 12916 KB Output is correct
3 Correct 19 ms 12880 KB Output is correct
4 Correct 19 ms 12884 KB Output is correct
5 Correct 11 ms 12880 KB Output is correct
6 Correct 11 ms 12880 KB Output is correct
7 Correct 14 ms 12880 KB Output is correct
8 Correct 6 ms 12880 KB Output is correct
9 Correct 4 ms 12880 KB Output is correct
10 Correct 4 ms 12880 KB Output is correct
11 Correct 4 ms 12880 KB Output is correct
12 Correct 3 ms 12880 KB Output is correct
13 Correct 5 ms 12880 KB Output is correct
14 Correct 6 ms 12880 KB Output is correct
15 Correct 5 ms 12880 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 12880 KB Output is correct
2 Correct 16 ms 12916 KB Output is correct
3 Correct 19 ms 12880 KB Output is correct
4 Correct 19 ms 12884 KB Output is correct
5 Correct 11 ms 12880 KB Output is correct
6 Correct 11 ms 12880 KB Output is correct
7 Correct 14 ms 12880 KB Output is correct
8 Correct 6 ms 12880 KB Output is correct
9 Correct 4 ms 12880 KB Output is correct
10 Correct 4 ms 12880 KB Output is correct
11 Correct 4 ms 12880 KB Output is correct
12 Correct 3 ms 12880 KB Output is correct
13 Correct 5 ms 12880 KB Output is correct
14 Correct 6 ms 12880 KB Output is correct
15 Correct 5 ms 12880 KB Output is correct
16 Correct 38 ms 14160 KB Output is correct
17 Correct 63 ms 17220 KB Output is correct
18 Correct 147 ms 17232 KB Output is correct
19 Correct 736 ms 17280 KB Output is correct
20 Correct 785 ms 17028 KB Output is correct
21 Correct 46 ms 17232 KB Output is correct
22 Correct 8 ms 12880 KB Output is correct
23 Correct 92 ms 15184 KB Output is correct
24 Correct 98 ms 17232 KB Output is correct
25 Correct 21 ms 13392 KB Output is correct
26 Correct 63 ms 15628 KB Output is correct
27 Correct 114 ms 16976 KB Output is correct
28 Correct 100 ms 17224 KB Output is correct
29 Correct 20 ms 14672 KB Output is correct
30 Correct 6 ms 13136 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 73 ms 17484 KB Output is correct
2 Correct 18 ms 14176 KB Output is correct
3 Correct 53 ms 17044 KB Output is correct
4 Correct 32 ms 15440 KB Output is correct
5 Correct 91 ms 17056 KB Output is correct
6 Correct 41 ms 15696 KB Output is correct
7 Correct 14 ms 13904 KB Output is correct
8 Correct 56 ms 15952 KB Output is correct
9 Correct 87 ms 18256 KB Output is correct
10 Correct 52 ms 16376 KB Output is correct
11 Correct 13 ms 12880 KB Output is correct
12 Correct 16 ms 12916 KB Output is correct
13 Correct 19 ms 12880 KB Output is correct
14 Correct 19 ms 12884 KB Output is correct
15 Correct 11 ms 12880 KB Output is correct
16 Correct 11 ms 12880 KB Output is correct
17 Correct 14 ms 12880 KB Output is correct
18 Correct 6 ms 12880 KB Output is correct
19 Correct 4 ms 12880 KB Output is correct
20 Correct 4 ms 12880 KB Output is correct
21 Correct 4 ms 12880 KB Output is correct
22 Correct 3 ms 12880 KB Output is correct
23 Correct 5 ms 12880 KB Output is correct
24 Correct 6 ms 12880 KB Output is correct
25 Correct 5 ms 12880 KB Output is correct
26 Correct 38 ms 14160 KB Output is correct
27 Correct 63 ms 17220 KB Output is correct
28 Correct 147 ms 17232 KB Output is correct
29 Correct 736 ms 17280 KB Output is correct
30 Correct 785 ms 17028 KB Output is correct
31 Correct 46 ms 17232 KB Output is correct
32 Correct 8 ms 12880 KB Output is correct
33 Correct 92 ms 15184 KB Output is correct
34 Correct 98 ms 17232 KB Output is correct
35 Correct 21 ms 13392 KB Output is correct
36 Correct 63 ms 15628 KB Output is correct
37 Correct 114 ms 16976 KB Output is correct
38 Correct 100 ms 17224 KB Output is correct
39 Correct 20 ms 14672 KB Output is correct
40 Correct 6 ms 13136 KB Output is correct
41 Correct 1220 ms 19644 KB Output is correct
42 Correct 222 ms 20048 KB Output is correct
43 Correct 525 ms 19528 KB Output is correct
44 Correct 193 ms 20040 KB Output is correct
45 Correct 100 ms 20296 KB Output is correct
46 Correct 1223 ms 20040 KB Output is correct
47 Correct 95 ms 19784 KB Output is correct
48 Correct 404 ms 19868 KB Output is correct
49 Correct 202 ms 19536 KB Output is correct
50 Execution timed out 2066 ms 19532 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 12880 KB Output is correct
2 Correct 6 ms 12880 KB Output is correct
3 Correct 5 ms 12880 KB Output is correct
4 Correct 5 ms 12984 KB Output is correct
5 Correct 3 ms 12880 KB Output is correct
6 Correct 7 ms 12988 KB Output is correct
7 Correct 3 ms 12880 KB Output is correct
8 Correct 4 ms 12980 KB Output is correct
9 Correct 73 ms 17484 KB Output is correct
10 Correct 18 ms 14176 KB Output is correct
11 Correct 53 ms 17044 KB Output is correct
12 Correct 32 ms 15440 KB Output is correct
13 Correct 91 ms 17056 KB Output is correct
14 Correct 41 ms 15696 KB Output is correct
15 Correct 14 ms 13904 KB Output is correct
16 Correct 56 ms 15952 KB Output is correct
17 Correct 87 ms 18256 KB Output is correct
18 Correct 52 ms 16376 KB Output is correct
19 Correct 13 ms 12880 KB Output is correct
20 Correct 16 ms 12916 KB Output is correct
21 Correct 19 ms 12880 KB Output is correct
22 Correct 19 ms 12884 KB Output is correct
23 Correct 11 ms 12880 KB Output is correct
24 Correct 11 ms 12880 KB Output is correct
25 Correct 14 ms 12880 KB Output is correct
26 Correct 6 ms 12880 KB Output is correct
27 Correct 4 ms 12880 KB Output is correct
28 Correct 4 ms 12880 KB Output is correct
29 Correct 4 ms 12880 KB Output is correct
30 Correct 3 ms 12880 KB Output is correct
31 Correct 5 ms 12880 KB Output is correct
32 Correct 6 ms 12880 KB Output is correct
33 Correct 5 ms 12880 KB Output is correct
34 Correct 38 ms 14160 KB Output is correct
35 Correct 63 ms 17220 KB Output is correct
36 Correct 147 ms 17232 KB Output is correct
37 Correct 736 ms 17280 KB Output is correct
38 Correct 785 ms 17028 KB Output is correct
39 Correct 46 ms 17232 KB Output is correct
40 Correct 8 ms 12880 KB Output is correct
41 Correct 92 ms 15184 KB Output is correct
42 Correct 98 ms 17232 KB Output is correct
43 Correct 21 ms 13392 KB Output is correct
44 Correct 63 ms 15628 KB Output is correct
45 Correct 114 ms 16976 KB Output is correct
46 Correct 100 ms 17224 KB Output is correct
47 Correct 20 ms 14672 KB Output is correct
48 Correct 6 ms 13136 KB Output is correct
49 Correct 1220 ms 19644 KB Output is correct
50 Correct 222 ms 20048 KB Output is correct
51 Correct 525 ms 19528 KB Output is correct
52 Correct 193 ms 20040 KB Output is correct
53 Correct 100 ms 20296 KB Output is correct
54 Correct 1223 ms 20040 KB Output is correct
55 Correct 95 ms 19784 KB Output is correct
56 Correct 404 ms 19868 KB Output is correct
57 Correct 202 ms 19536 KB Output is correct
58 Execution timed out 2066 ms 19532 KB Time limit exceeded
59 Halted 0 ms 0 KB -