oj.uz

Submission #81005

# Submission time Handle Problem Language Result Execution time Memory
81005 2018-10-23T12:23:46 Z ToadDaveski Chessboard (IZhO18_chessboard) C++14
70 / 100
 498 ms 2304 KB 
#include <bits/stdc++.h>
#define ll long long
#define fr first
#define sc second
using namespace std;
pair <ll,ll> a[100001];
int main()
{
    ll n,m,i,j;
    cin>>n>>m;
    for(i=1;i<=m;i++)
    {
        ll x,y;
        cin>>x>>x>>x>>y;
        a[i]={x,y};
    }
    ll ans=1e10;
    for(i=1;i<=sqrt(n);i++)
    {
        if (n%i==0)
        {
            ll raz=i;ll  izm=0;
            ll kolb=(((n*n)/(i*i)))/2*i*i;
            ll kolw=((((n*n)/(i*i)))/2+(((n*n)/(i*i))%2))*i*i;
            for(ll j=1;j<=m;j++)
            {
                ll x=(a[j].fr/i)+(a[j].fr%i>0),y=(a[j].sc/i)+(a[j].sc%i>0);
                if ((x+y)%2==1)
                    izm++;
            }
            ans=min(ans,min(izm+(kolw-(m-izm)),(m-izm)+(kolb-izm)));
            //cout<<ans<<" "<<i<<" "<<izm<<" "<<kolb<<" "<<kolw<<endl;
            if (i==1) continue;
            raz=i;
            i=n/i;
            izm=0;
            kolb=(((n*n)/(i*i)))/2*i*i;
            kolw=((((n*n)/(i*i)))/2+(((n*n)/(i*i))%2))*i*i;
            for(ll j=1;j<=m;j++)
            {
                ll x=a[j].fr/i+(a[j].fr%i>0),y=(a[j].sc/i)+(a[j].sc%i>0);
                if ((x+y)%2==1)
                    izm++;
            }
            ans=min(ans,min(izm+(kolw-(m-izm)),(m-izm)+(kolb-izm)));
            //cout<<ans<<" "<<i<<" "<<izm<<endl;
            i=raz;
        }
    }
    cout<<ans;
    return 0;
}
/*
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:9:14: warning: unused variable 'j' [-Wunused-variable]
     ll n,m,i,j;
              ^

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 484 KB Output is correct
3 Correct 2 ms 484 KB Output is correct
4 Correct 2 ms 484 KB Output is correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 2 ms 484 KB Output is correct
7 Correct 2 ms 484 KB Output is correct
8 Correct 2 ms 484 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 86 ms 1400 KB Output is correct
2 Correct 23 ms 1400 KB Output is correct
3 Correct 55 ms 1400 KB Output is correct
4 Correct 56 ms 1400 KB Output is correct
5 Correct 75 ms 1400 KB Output is correct
6 Correct 49 ms 1400 KB Output is correct
7 Correct 12 ms 1400 KB Output is correct
8 Correct 62 ms 1400 KB Output is correct
9 Correct 124 ms 1908 KB Output is correct
10 Correct 69 ms 1908 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1908 KB Output is correct
2 Correct 2 ms 1908 KB Output is correct
3 Correct 3 ms 1908 KB Output is correct
4 Correct 4 ms 1908 KB Output is correct
5 Correct 3 ms 1908 KB Output is correct
6 Correct 3 ms 1908 KB Output is correct
7 Correct 4 ms 1908 KB Output is correct
8 Correct 2 ms 1908 KB Output is correct
9 Correct 2 ms 1908 KB Output is correct
10 Correct 2 ms 1908 KB Output is correct
11 Correct 2 ms 1908 KB Output is correct
12 Correct 2 ms 1908 KB Output is correct
13 Correct 3 ms 1908 KB Output is correct
14 Correct 3 ms 1908 KB Output is correct
15 Correct 3 ms 1908 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1908 KB Output is correct
2 Correct 2 ms 1908 KB Output is correct
3 Correct 3 ms 1908 KB Output is correct
4 Correct 4 ms 1908 KB Output is correct
5 Correct 3 ms 1908 KB Output is correct
6 Correct 3 ms 1908 KB Output is correct
7 Correct 4 ms 1908 KB Output is correct
8 Correct 2 ms 1908 KB Output is correct
9 Correct 2 ms 1908 KB Output is correct
10 Correct 2 ms 1908 KB Output is correct
11 Correct 2 ms 1908 KB Output is correct
12 Correct 2 ms 1908 KB Output is correct
13 Correct 3 ms 1908 KB Output is correct
14 Correct 3 ms 1908 KB Output is correct
15 Correct 3 ms 1908 KB Output is correct
16 Correct 35 ms 1908 KB Output is correct
17 Correct 89 ms 1908 KB Output is correct
18 Correct 116 ms 2176 KB Output is correct
19 Correct 162 ms 2176 KB Output is correct
20 Correct 172 ms 2176 KB Output is correct
21 Correct 83 ms 2176 KB Output is correct
22 Correct 2 ms 2176 KB Output is correct
23 Correct 54 ms 2176 KB Output is correct
24 Correct 111 ms 2176 KB Output is correct
25 Correct 13 ms 2176 KB Output is correct
26 Correct 95 ms 2176 KB Output is correct
27 Correct 77 ms 2176 KB Output is correct
28 Correct 108 ms 2176 KB Output is correct
29 Correct 52 ms 2176 KB Output is correct
30 Correct 5 ms 2176 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 86 ms 1400 KB Output is correct
2 Correct 23 ms 1400 KB Output is correct
3 Correct 55 ms 1400 KB Output is correct
4 Correct 56 ms 1400 KB Output is correct
5 Correct 75 ms 1400 KB Output is correct
6 Correct 49 ms 1400 KB Output is correct
7 Correct 12 ms 1400 KB Output is correct
8 Correct 62 ms 1400 KB Output is correct
9 Correct 124 ms 1908 KB Output is correct
10 Correct 69 ms 1908 KB Output is correct
11 Correct 2 ms 1908 KB Output is correct
12 Correct 2 ms 1908 KB Output is correct
13 Correct 3 ms 1908 KB Output is correct
14 Correct 4 ms 1908 KB Output is correct
15 Correct 3 ms 1908 KB Output is correct
16 Correct 3 ms 1908 KB Output is correct
17 Correct 4 ms 1908 KB Output is correct
18 Correct 2 ms 1908 KB Output is correct
19 Correct 2 ms 1908 KB Output is correct
20 Correct 2 ms 1908 KB Output is correct
21 Correct 2 ms 1908 KB Output is correct
22 Correct 2 ms 1908 KB Output is correct
23 Correct 3 ms 1908 KB Output is correct
24 Correct 3 ms 1908 KB Output is correct
25 Correct 3 ms 1908 KB Output is correct
26 Correct 35 ms 1908 KB Output is correct
27 Correct 89 ms 1908 KB Output is correct
28 Correct 116 ms 2176 KB Output is correct
29 Correct 162 ms 2176 KB Output is correct
30 Correct 172 ms 2176 KB Output is correct
31 Correct 83 ms 2176 KB Output is correct
32 Correct 2 ms 2176 KB Output is correct
33 Correct 54 ms 2176 KB Output is correct
34 Correct 111 ms 2176 KB Output is correct
35 Correct 13 ms 2176 KB Output is correct
36 Correct 95 ms 2176 KB Output is correct
37 Correct 77 ms 2176 KB Output is correct
38 Correct 108 ms 2176 KB Output is correct
39 Correct 52 ms 2176 KB Output is correct
40 Correct 5 ms 2176 KB Output is correct
41 Correct 174 ms 2176 KB Output is correct
42 Correct 139 ms 2176 KB Output is correct
43 Correct 137 ms 2176 KB Output is correct
44 Correct 131 ms 2176 KB Output is correct
45 Correct 174 ms 2176 KB Output is correct
46 Correct 185 ms 2176 KB Output is correct
47 Correct 139 ms 2176 KB Output is correct
48 Correct 135 ms 2176 KB Output is correct
49 Correct 126 ms 2176 KB Output is correct
50 Correct 449 ms 2176 KB Output is correct
51 Correct 472 ms 2244 KB Output is correct
52 Correct 478 ms 2244 KB Output is correct
53 Correct 482 ms 2244 KB Output is correct
54 Correct 462 ms 2244 KB Output is correct
55 Correct 498 ms 2304 KB Output is correct
56 Correct 418 ms 2304 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 2 ms 484 KB Output is correct
3 Correct 2 ms 484 KB Output is correct
4 Correct 2 ms 484 KB Output is correct
5 Correct 2 ms 484 KB Output is correct
6 Correct 2 ms 484 KB Output is correct
7 Correct 2 ms 484 KB Output is correct
8 Correct 2 ms 484 KB Output is correct
9 Correct 86 ms 1400 KB Output is correct
10 Correct 23 ms 1400 KB Output is correct
11 Correct 55 ms 1400 KB Output is correct
12 Correct 56 ms 1400 KB Output is correct
13 Correct 75 ms 1400 KB Output is correct
14 Correct 49 ms 1400 KB Output is correct
15 Correct 12 ms 1400 KB Output is correct
16 Correct 62 ms 1400 KB Output is correct
17 Correct 124 ms 1908 KB Output is correct
18 Correct 69 ms 1908 KB Output is correct
19 Correct 2 ms 1908 KB Output is correct
20 Correct 2 ms 1908 KB Output is correct
21 Correct 3 ms 1908 KB Output is correct
22 Correct 4 ms 1908 KB Output is correct
23 Correct 3 ms 1908 KB Output is correct
24 Correct 3 ms 1908 KB Output is correct
25 Correct 4 ms 1908 KB Output is correct
26 Correct 2 ms 1908 KB Output is correct
27 Correct 2 ms 1908 KB Output is correct
28 Correct 2 ms 1908 KB Output is correct
29 Correct 2 ms 1908 KB Output is correct
30 Correct 2 ms 1908 KB Output is correct
31 Correct 3 ms 1908 KB Output is correct
32 Correct 3 ms 1908 KB Output is correct
33 Correct 3 ms 1908 KB Output is correct
34 Correct 35 ms 1908 KB Output is correct
35 Correct 89 ms 1908 KB Output is correct
36 Correct 116 ms 2176 KB Output is correct
37 Correct 162 ms 2176 KB Output is correct
38 Correct 172 ms 2176 KB Output is correct
39 Correct 83 ms 2176 KB Output is correct
40 Correct 2 ms 2176 KB Output is correct
41 Correct 54 ms 2176 KB Output is correct
42 Correct 111 ms 2176 KB Output is correct
43 Correct 13 ms 2176 KB Output is correct
44 Correct 95 ms 2176 KB Output is correct
45 Correct 77 ms 2176 KB Output is correct
46 Correct 108 ms 2176 KB Output is correct
47 Correct 52 ms 2176 KB Output is correct
48 Correct 5 ms 2176 KB Output is correct
49 Correct 174 ms 2176 KB Output is correct
50 Correct 139 ms 2176 KB Output is correct
51 Correct 137 ms 2176 KB Output is correct
52 Correct 131 ms 2176 KB Output is correct
53 Correct 174 ms 2176 KB Output is correct
54 Correct 185 ms 2176 KB Output is correct
55 Correct 139 ms 2176 KB Output is correct
56 Correct 135 ms 2176 KB Output is correct
57 Correct 126 ms 2176 KB Output is correct
58 Correct 449 ms 2176 KB Output is correct
59 Correct 472 ms 2244 KB Output is correct
60 Correct 478 ms 2244 KB Output is correct
61 Correct 482 ms 2244 KB Output is correct
62 Correct 462 ms 2244 KB Output is correct
63 Correct 498 ms 2304 KB Output is correct
64 Correct 418 ms 2304 KB Output is correct
65 Correct 2 ms 2304 KB Output is correct
66 Incorrect 2 ms 2304 KB Output isn't correct
67 Halted 0 ms 0 KB -