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Submission #99771

# Submission time Handle Problem Language Result Execution time Memory
99771 2019-03-07T02:54:35 Z choikiwon Chessboard (IZhO18_chessboard) C++17
70 / 100
 693 ms 4344 KB 
#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

const int MN = 100010;

int N, K;
struct Rect {
    int r1, c1, r2, c2;
};
Rect rect[MN];

int main() {
    scanf("%d %d", &N, &K);

    for(int i = 0; i < K; i++) {
        scanf("%d %d %d %d", &rect[i].r1, &rect[i].c1, &rect[i].r2, &rect[i].c2);
        rect[i].r1--;
        rect[i].c1--;
        rect[i].r2--;
        rect[i].c2--;
    }

    ll mn = 1e18;
    for(int i = 1; i < N; i++) {
        if(N % i == 0) {
            for(int j = 0; j < 2; j++) {
                int n = N / i;

                ll tmp = j? (1LL * n * n + 1) / 2 : 1LL * n * n / 2;
                tmp *= 1LL * i * i;

                for(int k = 0; k < K; k++) {
                    int rr = min(rect[k].r2 + 1, (rect[k].r1 + i) / i * i);
                    int cc = min(rect[k].c2 + 1, (rect[k].c1 + i) / i * i);
                    int br = (rect[k].r2 - rr + 1) / (2 * i);
                    int bc = (rect[k].c2 - cc + 1) / (2 * i);
                    if((rect[k].r2 - rr + 1) % (2 * i) > i) br += (rect[k].r2 - rr + 1) % (2 * i) - i;
                    if((rect[k].c2 - cc + 1) % (2 * i) > i) bc += (rect[k].c2 - cc + 1) % (2 * i) - i;
                    br += rr - rect[k].r1;
                    bc += cc - rect[k].c1;
                    int wr = rect[k].r2 - rect[k].r1 + 1 - br;
                    int wc = rect[k].c2 - rect[k].c1 + 1 - bc;

                    if(j ^ ((rect[k].r1 / i + rect[k].c1 / i) & 1)) tmp -= 1LL * (br - wr) * (bc - wc);
                    else tmp += 1LL * (br - wr) * (bc - wc);
                }

                mn = min(mn, tmp);
            }
        }
    }
    printf("%lld", mn);
}

Compilation message

chessboard.cpp: In function 'int main()':
chessboard.cpp:16:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &N, &K);
     ~~~~~^~~~~~~~~~~~~~~~~
chessboard.cpp:19:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d %d", &rect[i].r1, &rect[i].c1, &rect[i].r2, &rect[i].c2);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 1272 KB Output is correct
2 Correct 9 ms 512 KB Output is correct
3 Correct 21 ms 896 KB Output is correct
4 Correct 23 ms 1016 KB Output is correct
5 Correct 33 ms 1152 KB Output is correct
6 Correct 31 ms 844 KB Output is correct
7 Correct 9 ms 512 KB Output is correct
8 Correct 20 ms 896 KB Output is correct
9 Correct 53 ms 1656 KB Output is correct
10 Correct 25 ms 1144 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 256 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 256 KB Output is correct
2 Correct 3 ms 384 KB Output is correct
3 Correct 3 ms 384 KB Output is correct
4 Correct 3 ms 384 KB Output is correct
5 Correct 3 ms 384 KB Output is correct
6 Correct 3 ms 384 KB Output is correct
7 Correct 3 ms 384 KB Output is correct
8 Correct 3 ms 384 KB Output is correct
9 Correct 2 ms 256 KB Output is correct
10 Correct 2 ms 256 KB Output is correct
11 Correct 2 ms 384 KB Output is correct
12 Correct 2 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 18 ms 768 KB Output is correct
17 Correct 36 ms 1656 KB Output is correct
18 Correct 51 ms 1912 KB Output is correct
19 Correct 167 ms 1748 KB Output is correct
20 Correct 167 ms 1912 KB Output is correct
21 Correct 34 ms 1656 KB Output is correct
22 Correct 3 ms 256 KB Output is correct
23 Correct 53 ms 1016 KB Output is correct
24 Correct 54 ms 1784 KB Output is correct
25 Correct 8 ms 384 KB Output is correct
26 Correct 47 ms 1276 KB Output is correct
27 Correct 45 ms 1380 KB Output is correct
28 Correct 53 ms 1780 KB Output is correct
29 Correct 17 ms 896 KB Output is correct
30 Correct 4 ms 384 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 33 ms 1272 KB Output is correct
2 Correct 9 ms 512 KB Output is correct
3 Correct 21 ms 896 KB Output is correct
4 Correct 23 ms 1016 KB Output is correct
5 Correct 33 ms 1152 KB Output is correct
6 Correct 31 ms 844 KB Output is correct
7 Correct 9 ms 512 KB Output is correct
8 Correct 20 ms 896 KB Output is correct
9 Correct 53 ms 1656 KB Output is correct
10 Correct 25 ms 1144 KB Output is correct
11 Correct 3 ms 256 KB Output is correct
12 Correct 3 ms 384 KB Output is correct
13 Correct 3 ms 384 KB Output is correct
14 Correct 3 ms 384 KB Output is correct
15 Correct 3 ms 384 KB Output is correct
16 Correct 3 ms 384 KB Output is correct
17 Correct 3 ms 384 KB Output is correct
18 Correct 3 ms 384 KB Output is correct
19 Correct 2 ms 256 KB Output is correct
20 Correct 2 ms 256 KB Output is correct
21 Correct 2 ms 384 KB Output is correct
22 Correct 2 ms 384 KB Output is correct
23 Correct 3 ms 384 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 3 ms 384 KB Output is correct
26 Correct 18 ms 768 KB Output is correct
27 Correct 36 ms 1656 KB Output is correct
28 Correct 51 ms 1912 KB Output is correct
29 Correct 167 ms 1748 KB Output is correct
30 Correct 167 ms 1912 KB Output is correct
31 Correct 34 ms 1656 KB Output is correct
32 Correct 3 ms 256 KB Output is correct
33 Correct 53 ms 1016 KB Output is correct
34 Correct 54 ms 1784 KB Output is correct
35 Correct 8 ms 384 KB Output is correct
36 Correct 47 ms 1276 KB Output is correct
37 Correct 45 ms 1380 KB Output is correct
38 Correct 53 ms 1780 KB Output is correct
39 Correct 17 ms 896 KB Output is correct
40 Correct 4 ms 384 KB Output is correct
41 Correct 135 ms 1656 KB Output is correct
42 Correct 58 ms 4008 KB Output is correct
43 Correct 88 ms 3576 KB Output is correct
44 Correct 59 ms 3960 KB Output is correct
45 Correct 93 ms 4216 KB Output is correct
46 Correct 153 ms 4052 KB Output is correct
47 Correct 60 ms 3708 KB Output is correct
48 Correct 78 ms 3832 KB Output is correct
49 Correct 78 ms 3704 KB Output is correct
50 Correct 619 ms 4016 KB Output is correct
51 Correct 641 ms 4216 KB Output is correct
52 Correct 643 ms 3960 KB Output is correct
53 Correct 663 ms 4216 KB Output is correct
54 Correct 589 ms 3840 KB Output is correct
55 Correct 669 ms 4344 KB Output is correct
56 Correct 574 ms 3832 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 256 KB Output is correct
2 Correct 2 ms 256 KB Output is correct
3 Correct 2 ms 384 KB Output is correct
4 Correct 3 ms 256 KB Output is correct
5 Correct 2 ms 256 KB Output is correct
6 Correct 2 ms 256 KB Output is correct
7 Correct 2 ms 384 KB Output is correct
8 Correct 2 ms 384 KB Output is correct
9 Correct 33 ms 1272 KB Output is correct
10 Correct 9 ms 512 KB Output is correct
11 Correct 21 ms 896 KB Output is correct
12 Correct 23 ms 1016 KB Output is correct
13 Correct 33 ms 1152 KB Output is correct
14 Correct 31 ms 844 KB Output is correct
15 Correct 9 ms 512 KB Output is correct
16 Correct 20 ms 896 KB Output is correct
17 Correct 53 ms 1656 KB Output is correct
18 Correct 25 ms 1144 KB Output is correct
19 Correct 3 ms 256 KB Output is correct
20 Correct 3 ms 384 KB Output is correct
21 Correct 3 ms 384 KB Output is correct
22 Correct 3 ms 384 KB Output is correct
23 Correct 3 ms 384 KB Output is correct
24 Correct 3 ms 384 KB Output is correct
25 Correct 3 ms 384 KB Output is correct
26 Correct 3 ms 384 KB Output is correct
27 Correct 2 ms 256 KB Output is correct
28 Correct 2 ms 256 KB Output is correct
29 Correct 2 ms 384 KB Output is correct
30 Correct 2 ms 384 KB Output is correct
31 Correct 3 ms 384 KB Output is correct
32 Correct 3 ms 384 KB Output is correct
33 Correct 3 ms 384 KB Output is correct
34 Correct 18 ms 768 KB Output is correct
35 Correct 36 ms 1656 KB Output is correct
36 Correct 51 ms 1912 KB Output is correct
37 Correct 167 ms 1748 KB Output is correct
38 Correct 167 ms 1912 KB Output is correct
39 Correct 34 ms 1656 KB Output is correct
40 Correct 3 ms 256 KB Output is correct
41 Correct 53 ms 1016 KB Output is correct
42 Correct 54 ms 1784 KB Output is correct
43 Correct 8 ms 384 KB Output is correct
44 Correct 47 ms 1276 KB Output is correct
45 Correct 45 ms 1380 KB Output is correct
46 Correct 53 ms 1780 KB Output is correct
47 Correct 17 ms 896 KB Output is correct
48 Correct 4 ms 384 KB Output is correct
49 Correct 135 ms 1656 KB Output is correct
50 Correct 58 ms 4008 KB Output is correct
51 Correct 88 ms 3576 KB Output is correct
52 Correct 59 ms 3960 KB Output is correct
53 Correct 93 ms 4216 KB Output is correct
54 Correct 153 ms 4052 KB Output is correct
55 Correct 60 ms 3708 KB Output is correct
56 Correct 78 ms 3832 KB Output is correct
57 Correct 78 ms 3704 KB Output is correct
58 Correct 619 ms 4016 KB Output is correct
59 Correct 641 ms 4216 KB Output is correct
60 Correct 643 ms 3960 KB Output is correct
61 Correct 663 ms 4216 KB Output is correct
62 Correct 589 ms 3840 KB Output is correct
63 Correct 669 ms 4344 KB Output is correct
64 Correct 574 ms 3832 KB Output is correct
65 Correct 3 ms 512 KB Output is correct
66 Correct 3 ms 256 KB Output is correct
67 Incorrect 693 ms 4076 KB Output isn't correct
68 Halted 0 ms 0 KB -