oj.uz

Submission #1112611

# Submission time Handle Problem Language Result Execution time Memory
1112611 2024-11-14T12:12:56 Z vjudge1 Chessboard (IZhO18_chessboard) C++17
47 / 100
 2000 ms 9712 KB 
//Dost SEFEROĞLU
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
#include <bits/stdc++.h>
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; 
 

int32_t t[400001],lazy[400001];
struct ST {
    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 solve() { 
    int n,k;
    cin >> n >> k;
    vector<pii> upds[n+2];
    for (int i=1;i<=k;i++) {
        int x1,y1,x2,y2;
        cin >> x1 >> y1 >> x2 >> y2;
        upds[x1].push_back({y1,y2});
        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;
    for (int d : divs) {
        int cur = 1;
        int fl = 0;
        while (cur <= n) {
            if (!fl) st1.update(1,1,n,cur,cur+d-1);
            cur+=d;
            fl^=1;
        }
        int need = 0;
        for (int j = 1;j<=n+1;j++) {
            for (auto it : upds[j]) st1.update(1,1,n,it.ff,it.ss);
            if (j > n) break;
            if (((j-1)/d)%2 == 0) need+=st1.query(1,1,n,1,n);
            else need+=n-st1.query(1,1,n,1,n);
        }
        ans = min(ans,need);
        ans = min(ans,n*n-need);
        cur = 1;
        fl = 0;
        while (cur <= n) {
            if (!fl) st1.update(1,1,n,cur,cur+d-1);
            cur+=d;
            fl^=1;
        }
    }
    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 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 568 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 5968 KB Output is correct
2 Correct 12 ms 1872 KB Output is correct
3 Correct 47 ms 6228 KB Output is correct
4 Correct 19 ms 2896 KB Output is correct
5 Correct 40 ms 5448 KB Output is correct
6 Correct 29 ms 4176 KB Output is correct
7 Correct 8 ms 1616 KB Output is correct
8 Correct 28 ms 4176 KB Output is correct
9 Correct 52 ms 6224 KB Output is correct
10 Correct 33 ms 4688 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 2 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 2 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 17 ms 1872 KB Output is correct
17 Correct 29 ms 4944 KB Output is correct
18 Correct 59 ms 4956 KB Output is correct
19 Correct 326 ms 4688 KB Output is correct
20 Correct 405 ms 4632 KB Output is correct
21 Correct 30 ms 4944 KB Output is correct
22 Correct 2 ms 336 KB Output is correct
23 Correct 49 ms 2692 KB Output is correct
24 Correct 55 ms 4688 KB Output is correct
25 Correct 18 ms 1096 KB Output is correct
26 Correct 36 ms 2896 KB Output is correct
27 Correct 60 ms 4432 KB Output is correct
28 Correct 60 ms 4704 KB Output is correct
29 Correct 12 ms 2384 KB Output is correct
30 Correct 3 ms 592 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 5968 KB Output is correct
2 Correct 12 ms 1872 KB Output is correct
3 Correct 47 ms 6228 KB Output is correct
4 Correct 19 ms 2896 KB Output is correct
5 Correct 40 ms 5448 KB Output is correct
6 Correct 29 ms 4176 KB Output is correct
7 Correct 8 ms 1616 KB Output is correct
8 Correct 28 ms 4176 KB Output is correct
9 Correct 52 ms 6224 KB Output is correct
10 Correct 33 ms 4688 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 2 ms 336 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 336 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 17 ms 1872 KB Output is correct
27 Correct 29 ms 4944 KB Output is correct
28 Correct 59 ms 4956 KB Output is correct
29 Correct 326 ms 4688 KB Output is correct
30 Correct 405 ms 4632 KB Output is correct
31 Correct 30 ms 4944 KB Output is correct
32 Correct 2 ms 336 KB Output is correct
33 Correct 49 ms 2692 KB Output is correct
34 Correct 55 ms 4688 KB Output is correct
35 Correct 18 ms 1096 KB Output is correct
36 Correct 36 ms 2896 KB Output is correct
37 Correct 60 ms 4432 KB Output is correct
38 Correct 60 ms 4704 KB Output is correct
39 Correct 12 ms 2384 KB Output is correct
40 Correct 3 ms 592 KB Output is correct
41 Correct 617 ms 9172 KB Output is correct
42 Correct 142 ms 9544 KB Output is correct
43 Correct 333 ms 9080 KB Output is correct
44 Correct 137 ms 9544 KB Output is correct
45 Correct 75 ms 9664 KB Output is correct
46 Correct 703 ms 9712 KB Output is correct
47 Correct 66 ms 9040 KB Output is correct
48 Correct 224 ms 9288 KB Output is correct
49 Correct 111 ms 9216 KB Output is correct
50 Execution timed out 2062 ms 9400 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 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 336 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 568 KB Output is correct
9 Correct 45 ms 5968 KB Output is correct
10 Correct 12 ms 1872 KB Output is correct
11 Correct 47 ms 6228 KB Output is correct
12 Correct 19 ms 2896 KB Output is correct
13 Correct 40 ms 5448 KB Output is correct
14 Correct 29 ms 4176 KB Output is correct
15 Correct 8 ms 1616 KB Output is correct
16 Correct 28 ms 4176 KB Output is correct
17 Correct 52 ms 6224 KB Output is correct
18 Correct 33 ms 4688 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 1 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 2 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 336 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 1 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 336 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 17 ms 1872 KB Output is correct
35 Correct 29 ms 4944 KB Output is correct
36 Correct 59 ms 4956 KB Output is correct
37 Correct 326 ms 4688 KB Output is correct
38 Correct 405 ms 4632 KB Output is correct
39 Correct 30 ms 4944 KB Output is correct
40 Correct 2 ms 336 KB Output is correct
41 Correct 49 ms 2692 KB Output is correct
42 Correct 55 ms 4688 KB Output is correct
43 Correct 18 ms 1096 KB Output is correct
44 Correct 36 ms 2896 KB Output is correct
45 Correct 60 ms 4432 KB Output is correct
46 Correct 60 ms 4704 KB Output is correct
47 Correct 12 ms 2384 KB Output is correct
48 Correct 3 ms 592 KB Output is correct
49 Correct 617 ms 9172 KB Output is correct
50 Correct 142 ms 9544 KB Output is correct
51 Correct 333 ms 9080 KB Output is correct
52 Correct 137 ms 9544 KB Output is correct
53 Correct 75 ms 9664 KB Output is correct
54 Correct 703 ms 9712 KB Output is correct
55 Correct 66 ms 9040 KB Output is correct
56 Correct 224 ms 9288 KB Output is correct
57 Correct 111 ms 9216 KB Output is correct
58 Execution timed out 2062 ms 9400 KB Time limit exceeded
59 Halted 0 ms 0 KB -