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Submission #787412

# Submission time Handle Problem Language Result Execution time Memory
787412 2023-07-19T07:01:37 Z willychan Chessboard (IZhO18_chessboard) C++14
70 / 100
 342 ms 4156 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
//#include<bits/extc++.h>
//__gnu_pbds
#define int ll
struct square{
	int x;int y;
	int xp;int yp;
};


signed main(){
	ios_base::sync_with_stdio(0),cin.tie(0),cout.tie(0);
	int n,k;cin>>n>>k;
	vector<ll> blackunion(n+1,0);
	vector<square> s(k);
	ll blacksum = 0;
	for(int i=0;i<k;i++){
		cin>>s[i].x>>s[i].xp>>s[i].y>>s[i].yp;
		s[i].x--;
		s[i].y--;
		s[i].xp--;
		s[i].yp--;
		blacksum+=1LL*(s[i].y-s[i].x+1)*(s[i].yp-s[i].xp+1);
	}
	ll minn = LONG_LONG_MAX;
	for(int d=1;d<n;d++){
		if(n%d) continue;
		for(int i=0;i<k;i++){
			ll hoz = 0;
			ll ver = 0;
			int g = (s[i].y/d)-(s[i].x/d);
			if(g==0) hoz = s[i].y-s[i].x+1;
			else{
				if(g&1){
					hoz = (d*(g/2))+d-(s[i].x%d);
				}else{
					hoz = d-(s[i].x%d)+(s[i].y%d)+1+(d*((g-1)/2));
				}
			}
			int h = (s[i].yp/d)-(s[i].xp/d);
			if(h==0) ver = s[i].yp-s[i].xp+1;
			else{
				if(h&1){
					ver = (d*(h/2))+d-(s[i].xp%d);
				}else{
					ver = d-(s[i].xp%d)+(s[i].yp%d)+1+(d*((h-1)/2));
				}
			}
			//cout<<ver<<" "<<hoz<<"\n";
			if((((s[i].x/d)&1)^((s[i].xp/d)&1))==0) blackunion[d]+=ver*hoz;	
			else blackunion[d]+=1LL*(s[i].y-s[i].x+1)*(s[i].yp-s[i].xp+1)-(ver*hoz);
		}
		ll allblack = 0;
		if((n/d)&1) allblack= 1LL*d*d*(1LL*(n/d)*(((n/d)/2))+((n/d)/2+1));
		else allblack = 1LL*d*d*(1LL*(n/d)*(n/d)/2);
		//cout<<d<<" "<<blackunion[d]<<" "<<allblack<<" "<<blacksum<<"\n";
		minn = min(minn,blacksum+allblack-2*blackunion[d]);
		minn = min(minn,2*blackunion[d]+(1LL*n*n-allblack)-blacksum);
	}
	cout<<minn<<"\n";
	return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 2772 KB Output is correct
2 Correct 5 ms 852 KB Output is correct
3 Correct 11 ms 2132 KB Output is correct
4 Correct 11 ms 1748 KB Output is correct
5 Correct 15 ms 2480 KB Output is correct
6 Correct 10 ms 1748 KB Output is correct
7 Correct 2 ms 724 KB Output is correct
8 Correct 10 ms 1748 KB Output is correct
9 Correct 30 ms 3392 KB Output is correct
10 Correct 14 ms 2132 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 0 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 8 ms 1108 KB Output is correct
17 Correct 19 ms 2900 KB Output is correct
18 Correct 28 ms 3412 KB Output is correct
19 Correct 72 ms 3028 KB Output is correct
20 Correct 80 ms 3412 KB Output is correct
21 Correct 24 ms 2892 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 16 ms 1620 KB Output is correct
24 Correct 24 ms 3156 KB Output is correct
25 Correct 3 ms 596 KB Output is correct
26 Correct 15 ms 2004 KB Output is correct
27 Correct 22 ms 2388 KB Output is correct
28 Correct 32 ms 3284 KB Output is correct
29 Correct 8 ms 1364 KB Output is correct
30 Correct 1 ms 340 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 2772 KB Output is correct
2 Correct 5 ms 852 KB Output is correct
3 Correct 11 ms 2132 KB Output is correct
4 Correct 11 ms 1748 KB Output is correct
5 Correct 15 ms 2480 KB Output is correct
6 Correct 10 ms 1748 KB Output is correct
7 Correct 2 ms 724 KB Output is correct
8 Correct 10 ms 1748 KB Output is correct
9 Correct 30 ms 3392 KB Output is correct
10 Correct 14 ms 2132 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 340 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 8 ms 1108 KB Output is correct
27 Correct 19 ms 2900 KB Output is correct
28 Correct 28 ms 3412 KB Output is correct
29 Correct 72 ms 3028 KB Output is correct
30 Correct 80 ms 3412 KB Output is correct
31 Correct 24 ms 2892 KB Output is correct
32 Correct 1 ms 212 KB Output is correct
33 Correct 16 ms 1620 KB Output is correct
34 Correct 24 ms 3156 KB Output is correct
35 Correct 3 ms 596 KB Output is correct
36 Correct 15 ms 2004 KB Output is correct
37 Correct 22 ms 2388 KB Output is correct
38 Correct 32 ms 3284 KB Output is correct
39 Correct 8 ms 1364 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 76 ms 3680 KB Output is correct
42 Correct 34 ms 4052 KB Output is correct
43 Correct 47 ms 3696 KB Output is correct
44 Correct 29 ms 3924 KB Output is correct
45 Correct 27 ms 4156 KB Output is correct
46 Correct 78 ms 3996 KB Output is correct
47 Correct 24 ms 3668 KB Output is correct
48 Correct 40 ms 3816 KB Output is correct
49 Correct 31 ms 3668 KB Output is correct
50 Correct 307 ms 3840 KB Output is correct
51 Correct 324 ms 3992 KB Output is correct
52 Correct 301 ms 3796 KB Output is correct
53 Correct 324 ms 3976 KB Output is correct
54 Correct 302 ms 3744 KB Output is correct
55 Correct 334 ms 4100 KB Output is correct
56 Correct 302 ms 3668 KB Output is correct

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 17 ms 2772 KB Output is correct
10 Correct 5 ms 852 KB Output is correct
11 Correct 11 ms 2132 KB Output is correct
12 Correct 11 ms 1748 KB Output is correct
13 Correct 15 ms 2480 KB Output is correct
14 Correct 10 ms 1748 KB Output is correct
15 Correct 2 ms 724 KB Output is correct
16 Correct 10 ms 1748 KB Output is correct
17 Correct 30 ms 3392 KB Output is correct
18 Correct 14 ms 2132 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 0 ms 212 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 340 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 340 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 8 ms 1108 KB Output is correct
35 Correct 19 ms 2900 KB Output is correct
36 Correct 28 ms 3412 KB Output is correct
37 Correct 72 ms 3028 KB Output is correct
38 Correct 80 ms 3412 KB Output is correct
39 Correct 24 ms 2892 KB Output is correct
40 Correct 1 ms 212 KB Output is correct
41 Correct 16 ms 1620 KB Output is correct
42 Correct 24 ms 3156 KB Output is correct
43 Correct 3 ms 596 KB Output is correct
44 Correct 15 ms 2004 KB Output is correct
45 Correct 22 ms 2388 KB Output is correct
46 Correct 32 ms 3284 KB Output is correct
47 Correct 8 ms 1364 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 76 ms 3680 KB Output is correct
50 Correct 34 ms 4052 KB Output is correct
51 Correct 47 ms 3696 KB Output is correct
52 Correct 29 ms 3924 KB Output is correct
53 Correct 27 ms 4156 KB Output is correct
54 Correct 78 ms 3996 KB Output is correct
55 Correct 24 ms 3668 KB Output is correct
56 Correct 40 ms 3816 KB Output is correct
57 Correct 31 ms 3668 KB Output is correct
58 Correct 307 ms 3840 KB Output is correct
59 Correct 324 ms 3992 KB Output is correct
60 Correct 301 ms 3796 KB Output is correct
61 Correct 324 ms 3976 KB Output is correct
62 Correct 302 ms 3744 KB Output is correct
63 Correct 334 ms 4100 KB Output is correct
64 Correct 302 ms 3668 KB Output is correct
65 Correct 0 ms 212 KB Output is correct
66 Correct 0 ms 212 KB Output is correct
67 Incorrect 342 ms 3900 KB Output isn't correct
68 Halted 0 ms 0 KB -