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Submission #43746

# Submission time Handle Problem Language Result Execution time Memory
43746 2018-03-22T03:06:08 Z nickyrio Chessboard (IZhO18_chessboard) C++14
70 / 100
 739 ms 46672 KB 
#include <bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i <= (b); ++i)
#define FORD(i, a, b) for (int i = (a); i >= (b); --i)
#define REP(i, a) for (int i = 0; i < (a); ++i)
#define DEBUG(x) { cerr << #x << '=' << x << endl; }
#define Arr(a, l, r) { cerr << #a << " = {"; FOR(_, l, r) cerr << ' ' << a[_]; cerr << "}\n"; }
#define N 1001000
#define pp pair<int, int>
#define endl '\n'
#define IO ios::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL)
#define taskname ""
#define bit(S, i) (((S) >> (i)) & 1)
using namespace std;
long long n, k, xx1[N], xx2[N], xy1[N], xy2[N];

long long solve(int l, int color) {// color = 0 -> Top-left is black
    long long ans = ((1ll * (n / l) * (n / l) + 1 - color) / 2) * l * l ;
    REP(i, k) {
        if (color ^ (((xx1[i] / l) % 2) == (xy1[i] / l) % 2)) ans--;
        else ans++;
    }
    return ans;
} 
int main() {
    #ifdef NERO
    freopen("test.inp","r",stdin);
    freopen("test.out","w",stdout);
    clock_t stime = clock();
    #endif //NERO
    IO;
    cin >> n >> k;
    long long ans = 1e18;
    REP(i, k) cin >> xx1[i] >> xy1[i] >> xx2[i] >> xy2[i];
    REP(i, k) xx1[i]--,xx2[i]--,xy1[i]--,xy2[i]--;
    FOR(i, 1, sqrt(n)) if (n % i == 0) {
        ans = min(ans, solve(i, 0));
        ans = min(ans, solve(i, 1));
        if (i != 1) ans = min(ans, solve(n / i, 0));
        if (i != 1) ans = min(ans, solve(n / i, 1));
    }
    cout << ans;
    #ifdef NERO
    clock_t etime = clock();
    cerr << "Execution time: " << (etime - stime) / CLOCKS_PER_SEC * 1000 << " ms.";
    #endif // NERO
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 248 KB Output is correct
2 Correct 2 ms 352 KB Output is correct
3 Correct 2 ms 424 KB Output is correct
4 Correct 2 ms 440 KB Output is correct
5 Correct 2 ms 496 KB Output is correct
6 Correct 2 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 2560 KB Output is correct
2 Correct 10 ms 2560 KB Output is correct
3 Correct 20 ms 3128 KB Output is correct
4 Correct 20 ms 4292 KB Output is correct
5 Correct 25 ms 5992 KB Output is correct
6 Correct 18 ms 6212 KB Output is correct
7 Correct 5 ms 6212 KB Output is correct
8 Correct 18 ms 7136 KB Output is correct
9 Correct 45 ms 10904 KB Output is correct
10 Correct 24 ms 10904 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10904 KB Output is correct
2 Correct 1 ms 10904 KB Output is correct
3 Correct 2 ms 10904 KB Output is correct
4 Correct 2 ms 10904 KB Output is correct
5 Correct 2 ms 10904 KB Output is correct
6 Correct 2 ms 10904 KB Output is correct
7 Correct 2 ms 10904 KB Output is correct
8 Correct 2 ms 10904 KB Output is correct
9 Correct 2 ms 10904 KB Output is correct
10 Correct 2 ms 10904 KB Output is correct
11 Correct 2 ms 10904 KB Output is correct
12 Correct 2 ms 10904 KB Output is correct
13 Correct 2 ms 10904 KB Output is correct
14 Correct 2 ms 10904 KB Output is correct
15 Correct 3 ms 10904 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10904 KB Output is correct
2 Correct 1 ms 10904 KB Output is correct
3 Correct 2 ms 10904 KB Output is correct
4 Correct 2 ms 10904 KB Output is correct
5 Correct 2 ms 10904 KB Output is correct
6 Correct 2 ms 10904 KB Output is correct
7 Correct 2 ms 10904 KB Output is correct
8 Correct 2 ms 10904 KB Output is correct
9 Correct 2 ms 10904 KB Output is correct
10 Correct 2 ms 10904 KB Output is correct
11 Correct 2 ms 10904 KB Output is correct
12 Correct 2 ms 10904 KB Output is correct
13 Correct 2 ms 10904 KB Output is correct
14 Correct 2 ms 10904 KB Output is correct
15 Correct 3 ms 10904 KB Output is correct
16 Correct 17 ms 10904 KB Output is correct
17 Correct 33 ms 11848 KB Output is correct
18 Correct 49 ms 12360 KB Output is correct
19 Correct 157 ms 12360 KB Output is correct
20 Correct 185 ms 12420 KB Output is correct
21 Correct 33 ms 12420 KB Output is correct
22 Correct 3 ms 12420 KB Output is correct
23 Correct 32 ms 12420 KB Output is correct
24 Correct 46 ms 12420 KB Output is correct
25 Correct 8 ms 12420 KB Output is correct
26 Correct 35 ms 12420 KB Output is correct
27 Correct 47 ms 12420 KB Output is correct
28 Correct 51 ms 12420 KB Output is correct
29 Correct 14 ms 12420 KB Output is correct
30 Correct 3 ms 12420 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 2560 KB Output is correct
2 Correct 10 ms 2560 KB Output is correct
3 Correct 20 ms 3128 KB Output is correct
4 Correct 20 ms 4292 KB Output is correct
5 Correct 25 ms 5992 KB Output is correct
6 Correct 18 ms 6212 KB Output is correct
7 Correct 5 ms 6212 KB Output is correct
8 Correct 18 ms 7136 KB Output is correct
9 Correct 45 ms 10904 KB Output is correct
10 Correct 24 ms 10904 KB Output is correct
11 Correct 2 ms 10904 KB Output is correct
12 Correct 1 ms 10904 KB Output is correct
13 Correct 2 ms 10904 KB Output is correct
14 Correct 2 ms 10904 KB Output is correct
15 Correct 2 ms 10904 KB Output is correct
16 Correct 2 ms 10904 KB Output is correct
17 Correct 2 ms 10904 KB Output is correct
18 Correct 2 ms 10904 KB Output is correct
19 Correct 2 ms 10904 KB Output is correct
20 Correct 2 ms 10904 KB Output is correct
21 Correct 2 ms 10904 KB Output is correct
22 Correct 2 ms 10904 KB Output is correct
23 Correct 2 ms 10904 KB Output is correct
24 Correct 2 ms 10904 KB Output is correct
25 Correct 3 ms 10904 KB Output is correct
26 Correct 17 ms 10904 KB Output is correct
27 Correct 33 ms 11848 KB Output is correct
28 Correct 49 ms 12360 KB Output is correct
29 Correct 157 ms 12360 KB Output is correct
30 Correct 185 ms 12420 KB Output is correct
31 Correct 33 ms 12420 KB Output is correct
32 Correct 3 ms 12420 KB Output is correct
33 Correct 32 ms 12420 KB Output is correct
34 Correct 46 ms 12420 KB Output is correct
35 Correct 8 ms 12420 KB Output is correct
36 Correct 35 ms 12420 KB Output is correct
37 Correct 47 ms 12420 KB Output is correct
38 Correct 51 ms 12420 KB Output is correct
39 Correct 14 ms 12420 KB Output is correct
40 Correct 3 ms 12420 KB Output is correct
41 Correct 133 ms 13896 KB Output is correct
42 Correct 53 ms 16536 KB Output is correct
43 Correct 91 ms 18152 KB Output is correct
44 Correct 52 ms 20588 KB Output is correct
45 Correct 46 ms 23228 KB Output is correct
46 Correct 149 ms 25320 KB Output is correct
47 Correct 41 ms 27048 KB Output is correct
48 Correct 65 ms 29104 KB Output is correct
49 Correct 45 ms 31140 KB Output is correct
50 Correct 640 ms 33632 KB Output is correct
51 Correct 672 ms 36028 KB Output is correct
52 Correct 647 ms 38032 KB Output is correct
53 Correct 696 ms 40508 KB Output is correct
54 Correct 613 ms 42292 KB Output is correct
55 Correct 739 ms 45056 KB Output is correct
56 Correct 606 ms 46672 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 248 KB Output is correct
2 Correct 2 ms 352 KB Output is correct
3 Correct 2 ms 424 KB Output is correct
4 Correct 2 ms 440 KB Output is correct
5 Correct 2 ms 496 KB Output is correct
6 Correct 2 ms 512 KB Output is correct
7 Correct 2 ms 512 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 28 ms 2560 KB Output is correct
10 Correct 10 ms 2560 KB Output is correct
11 Correct 20 ms 3128 KB Output is correct
12 Correct 20 ms 4292 KB Output is correct
13 Correct 25 ms 5992 KB Output is correct
14 Correct 18 ms 6212 KB Output is correct
15 Correct 5 ms 6212 KB Output is correct
16 Correct 18 ms 7136 KB Output is correct
17 Correct 45 ms 10904 KB Output is correct
18 Correct 24 ms 10904 KB Output is correct
19 Correct 2 ms 10904 KB Output is correct
20 Correct 1 ms 10904 KB Output is correct
21 Correct 2 ms 10904 KB Output is correct
22 Correct 2 ms 10904 KB Output is correct
23 Correct 2 ms 10904 KB Output is correct
24 Correct 2 ms 10904 KB Output is correct
25 Correct 2 ms 10904 KB Output is correct
26 Correct 2 ms 10904 KB Output is correct
27 Correct 2 ms 10904 KB Output is correct
28 Correct 2 ms 10904 KB Output is correct
29 Correct 2 ms 10904 KB Output is correct
30 Correct 2 ms 10904 KB Output is correct
31 Correct 2 ms 10904 KB Output is correct
32 Correct 2 ms 10904 KB Output is correct
33 Correct 3 ms 10904 KB Output is correct
34 Correct 17 ms 10904 KB Output is correct
35 Correct 33 ms 11848 KB Output is correct
36 Correct 49 ms 12360 KB Output is correct
37 Correct 157 ms 12360 KB Output is correct
38 Correct 185 ms 12420 KB Output is correct
39 Correct 33 ms 12420 KB Output is correct
40 Correct 3 ms 12420 KB Output is correct
41 Correct 32 ms 12420 KB Output is correct
42 Correct 46 ms 12420 KB Output is correct
43 Correct 8 ms 12420 KB Output is correct
44 Correct 35 ms 12420 KB Output is correct
45 Correct 47 ms 12420 KB Output is correct
46 Correct 51 ms 12420 KB Output is correct
47 Correct 14 ms 12420 KB Output is correct
48 Correct 3 ms 12420 KB Output is correct
49 Correct 133 ms 13896 KB Output is correct
50 Correct 53 ms 16536 KB Output is correct
51 Correct 91 ms 18152 KB Output is correct
52 Correct 52 ms 20588 KB Output is correct
53 Correct 46 ms 23228 KB Output is correct
54 Correct 149 ms 25320 KB Output is correct
55 Correct 41 ms 27048 KB Output is correct
56 Correct 65 ms 29104 KB Output is correct
57 Correct 45 ms 31140 KB Output is correct
58 Correct 640 ms 33632 KB Output is correct
59 Correct 672 ms 36028 KB Output is correct
60 Correct 647 ms 38032 KB Output is correct
61 Correct 696 ms 40508 KB Output is correct
62 Correct 613 ms 42292 KB Output is correct
63 Correct 739 ms 45056 KB Output is correct
64 Correct 606 ms 46672 KB Output is correct
65 Correct 2 ms 46672 KB Output is correct
66 Incorrect 1 ms 46672 KB Output isn't correct
67 Halted 0 ms 0 KB -