oj.uz

Submission #241530

# Submission time Handle Problem Language Result Execution time Memory
241530 2020-06-24T11:33:29 Z mhy908 Chessboard (IZhO18_chessboard) C++14
100 / 100
 823 ms 4344 KB 
#include <bits/stdc++.h>
#define eb emplace_back
#define mp make_pair
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define svec(x) sort(x.begin(), x.end())
#define press(x) x.erase(unique(x.begin(), x.end()), x.end())
#define lb(x, v) lower_bound(x.begin(), x.end(), v)
#define ub(x, v) upper_bound(x.begin(), x.end(), v)
using namespace std;
typedef long long LL;
typedef pair<int, int> pii;
typedef pair<LL, LL> pll;
typedef pair<int, LL> pil;
typedef pair<LL, int> pli;
const LL llinf=2000000000000000000;
const LL mod1=1000000007;
const LL mod2=998244353;
const int inf=2000000000;
int n, k;
pair<pii, pii> rect[100010];
LL ans=llinf;
LL query2(int x, int y, int s){
    LL ret=0;
    int tx=x/s, ty=y/s;
    ret+=(LL)tx*ty/2*s*s;
    int rx=x%s, ry=y%s;
    if(tx%2)ret+=(LL)rx*((ty+1)/2)*s;
    else ret+=(LL)rx*(ty/2)*s;
    if(ty%2)ret+=(LL)ry*((tx+1)/2)*s;
    else ret+=(LL)ry*(tx/2)*s;
    if((tx+ty)%2)ret+=(LL)rx*ry;
    return ret;
}
pll query(int stx, int sty, int finx, int finy, int s){
    LL b=query2(finx, finy, s)-query2(stx-1, finy, s)-query2(finx, sty-1, s)+query2(stx-1, sty-1, s);
    LL w=(LL)(finx-stx+1)*(finy-sty+1)-b;
    //if(((stx-1)/s+(sty-1)/s)%2)return mp(1, 0);
    return mp(b, w);
}
int main(){
    scanf("%d %d", &n, &k);
    for(int i=1; i<=k; i++){
        scanf("%d %d %d %d", &rect[i].F.F, &rect[i].F.S, &rect[i].S.F, &rect[i].S.S);
    }
    for(int i=1; i<n; i++){
        if(n%i)continue;
        LL w=0, b=0;
        for(int j=1; j<=k; j++){
            pll tmp=query(rect[j].F.F, rect[j].F.S, rect[j].S.F, rect[j].S.S, i);
            b+=tmp.F;
            w+=tmp.S;
        }
        LL temp1=w+(LL)(n/i)*(n/i)/2*i*i-b;
        LL temp2=b+((LL)(n/i)*(n/i)+1)/2*i*i-w;
        ans=min(ans, min(temp1, temp2));
    }
    printf("%lld", ans);
}
/*
6 8
3 3 3 3
1 2 1 2
3 4 3 4
5 5 5 5
4 3 4 3
4 4 4 4
2 1 2 1
3 6 3 6
*/

Compilation message

chessboard.cpp: In function 'int main()':
chessboard.cpp:43:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d", &n, &k);
     ~~~~~^~~~~~~~~~~~~~~~~
chessboard.cpp:45:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d %d %d %d", &rect[i].F.F, &rect[i].F.S, &rect[i].S.F, &rect[i].S.S);
         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 4 ms 128 KB Output is correct
8 Correct 5 ms 384 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 1256 KB Output is correct
2 Correct 13 ms 640 KB Output is correct
3 Correct 26 ms 896 KB Output is correct
4 Correct 26 ms 1016 KB Output is correct
5 Correct 36 ms 1152 KB Output is correct
6 Correct 22 ms 896 KB Output is correct
7 Correct 9 ms 384 KB Output is correct
8 Correct 23 ms 872 KB Output is correct
9 Correct 51 ms 1656 KB Output is correct
10 Correct 32 ms 1152 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 6 ms 384 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 512 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 256 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 256 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 6 ms 384 KB Output is correct
9 Correct 5 ms 256 KB Output is correct
10 Correct 4 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 256 KB Output is correct
13 Correct 5 ms 384 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 512 KB Output is correct
16 Correct 20 ms 768 KB Output is correct
17 Correct 42 ms 1920 KB Output is correct
18 Correct 59 ms 1912 KB Output is correct
19 Correct 171 ms 1748 KB Output is correct
20 Correct 192 ms 1912 KB Output is correct
21 Correct 39 ms 1528 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 37 ms 1024 KB Output is correct
24 Correct 54 ms 1656 KB Output is correct
25 Correct 11 ms 512 KB Output is correct
26 Correct 35 ms 1152 KB Output is correct
27 Correct 49 ms 1312 KB Output is correct
28 Correct 57 ms 1792 KB Output is correct
29 Correct 20 ms 896 KB Output is correct
30 Correct 6 ms 384 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 37 ms 1256 KB Output is correct
2 Correct 13 ms 640 KB Output is correct
3 Correct 26 ms 896 KB Output is correct
4 Correct 26 ms 1016 KB Output is correct
5 Correct 36 ms 1152 KB Output is correct
6 Correct 22 ms 896 KB Output is correct
7 Correct 9 ms 384 KB Output is correct
8 Correct 23 ms 872 KB Output is correct
9 Correct 51 ms 1656 KB Output is correct
10 Correct 32 ms 1152 KB Output is correct
11 Correct 5 ms 256 KB Output is correct
12 Correct 4 ms 256 KB Output is correct
13 Correct 5 ms 256 KB Output is correct
14 Correct 5 ms 384 KB Output is correct
15 Correct 5 ms 384 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 6 ms 384 KB Output is correct
19 Correct 5 ms 256 KB Output is correct
20 Correct 4 ms 384 KB Output is correct
21 Correct 5 ms 384 KB Output is correct
22 Correct 5 ms 256 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 512 KB Output is correct
26 Correct 20 ms 768 KB Output is correct
27 Correct 42 ms 1920 KB Output is correct
28 Correct 59 ms 1912 KB Output is correct
29 Correct 171 ms 1748 KB Output is correct
30 Correct 192 ms 1912 KB Output is correct
31 Correct 39 ms 1528 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 37 ms 1024 KB Output is correct
34 Correct 54 ms 1656 KB Output is correct
35 Correct 11 ms 512 KB Output is correct
36 Correct 35 ms 1152 KB Output is correct
37 Correct 49 ms 1312 KB Output is correct
38 Correct 57 ms 1792 KB Output is correct
39 Correct 20 ms 896 KB Output is correct
40 Correct 6 ms 384 KB Output is correct
41 Correct 157 ms 1656 KB Output is correct
42 Correct 68 ms 1756 KB Output is correct
43 Correct 105 ms 1660 KB Output is correct
44 Correct 66 ms 1784 KB Output is correct
45 Correct 58 ms 1784 KB Output is correct
46 Correct 178 ms 1784 KB Output is correct
47 Correct 50 ms 1656 KB Output is correct
48 Correct 83 ms 1656 KB Output is correct
49 Correct 59 ms 1656 KB Output is correct
50 Correct 730 ms 1784 KB Output is correct
51 Correct 777 ms 1912 KB Output is correct
52 Correct 724 ms 1912 KB Output is correct
53 Correct 776 ms 1864 KB Output is correct
54 Correct 721 ms 1784 KB Output is correct
55 Correct 806 ms 2040 KB Output is correct
56 Correct 696 ms 1784 KB Output is correct

Subtask #6
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 256 KB Output is correct
2 Correct 4 ms 256 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 4 ms 256 KB Output is correct
5 Correct 5 ms 256 KB Output is correct
6 Correct 4 ms 256 KB Output is correct
7 Correct 4 ms 128 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 37 ms 1256 KB Output is correct
10 Correct 13 ms 640 KB Output is correct
11 Correct 26 ms 896 KB Output is correct
12 Correct 26 ms 1016 KB Output is correct
13 Correct 36 ms 1152 KB Output is correct
14 Correct 22 ms 896 KB Output is correct
15 Correct 9 ms 384 KB Output is correct
16 Correct 23 ms 872 KB Output is correct
17 Correct 51 ms 1656 KB Output is correct
18 Correct 32 ms 1152 KB Output is correct
19 Correct 5 ms 256 KB Output is correct
20 Correct 4 ms 256 KB Output is correct
21 Correct 5 ms 256 KB Output is correct
22 Correct 5 ms 384 KB Output is correct
23 Correct 5 ms 384 KB Output is correct
24 Correct 5 ms 384 KB Output is correct
25 Correct 5 ms 384 KB Output is correct
26 Correct 6 ms 384 KB Output is correct
27 Correct 5 ms 256 KB Output is correct
28 Correct 4 ms 384 KB Output is correct
29 Correct 5 ms 384 KB Output is correct
30 Correct 5 ms 256 KB Output is correct
31 Correct 5 ms 384 KB Output is correct
32 Correct 5 ms 384 KB Output is correct
33 Correct 5 ms 512 KB Output is correct
34 Correct 20 ms 768 KB Output is correct
35 Correct 42 ms 1920 KB Output is correct
36 Correct 59 ms 1912 KB Output is correct
37 Correct 171 ms 1748 KB Output is correct
38 Correct 192 ms 1912 KB Output is correct
39 Correct 39 ms 1528 KB Output is correct
40 Correct 5 ms 384 KB Output is correct
41 Correct 37 ms 1024 KB Output is correct
42 Correct 54 ms 1656 KB Output is correct
43 Correct 11 ms 512 KB Output is correct
44 Correct 35 ms 1152 KB Output is correct
45 Correct 49 ms 1312 KB Output is correct
46 Correct 57 ms 1792 KB Output is correct
47 Correct 20 ms 896 KB Output is correct
48 Correct 6 ms 384 KB Output is correct
49 Correct 157 ms 1656 KB Output is correct
50 Correct 68 ms 1756 KB Output is correct
51 Correct 105 ms 1660 KB Output is correct
52 Correct 66 ms 1784 KB Output is correct
53 Correct 58 ms 1784 KB Output is correct
54 Correct 178 ms 1784 KB Output is correct
55 Correct 50 ms 1656 KB Output is correct
56 Correct 83 ms 1656 KB Output is correct
57 Correct 59 ms 1656 KB Output is correct
58 Correct 730 ms 1784 KB Output is correct
59 Correct 777 ms 1912 KB Output is correct
60 Correct 724 ms 1912 KB Output is correct
61 Correct 776 ms 1864 KB Output is correct
62 Correct 721 ms 1784 KB Output is correct
63 Correct 806 ms 2040 KB Output is correct
64 Correct 696 ms 1784 KB Output is correct
65 Correct 4 ms 256 KB Output is correct
66 Correct 5 ms 256 KB Output is correct
67 Correct 763 ms 3960 KB Output is correct
68 Correct 760 ms 4052 KB Output is correct
69 Correct 668 ms 3604 KB Output is correct
70 Correct 741 ms 4088 KB Output is correct
71 Correct 740 ms 3896 KB Output is correct
72 Correct 717 ms 3832 KB Output is correct
73 Correct 705 ms 3832 KB Output is correct
74 Correct 754 ms 3960 KB Output is correct
75 Correct 729 ms 3960 KB Output is correct
76 Correct 770 ms 4220 KB Output is correct
77 Correct 143 ms 4344 KB Output is correct
78 Correct 67 ms 3832 KB Output is correct
79 Correct 104 ms 3704 KB Output is correct
80 Correct 108 ms 3832 KB Output is correct
81 Correct 100 ms 3576 KB Output is correct
82 Correct 91 ms 3960 KB Output is correct
83 Correct 75 ms 3704 KB Output is correct
84 Correct 465 ms 4216 KB Output is correct
85 Correct 809 ms 4344 KB Output is correct
86 Correct 6 ms 384 KB Output is correct
87 Correct 6 ms 256 KB Output is correct
88 Correct 823 ms 4344 KB Output is correct
89 Correct 160 ms 1024 KB Output is correct
90 Correct 5 ms 256 KB Output is correct