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Submission #787410

# Submission time Handle Problem Language Result Execution time Memory
787410 2023-07-19T07:00:46 Z willychan Chessboard (IZhO18_chessboard) C++14
70 / 100
 338 ms 4940 KB 
#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
//#include<bits/extc++.h>
//__gnu_pbds

struct square{
	int x;int y;
	int xp;int yp;
};


int 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 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 18 ms 3192 KB Output is correct
2 Correct 5 ms 980 KB Output is correct
3 Correct 12 ms 2484 KB Output is correct
4 Correct 12 ms 1864 KB Output is correct
5 Correct 15 ms 2900 KB Output is correct
6 Correct 10 ms 2004 KB Output is correct
7 Correct 3 ms 724 KB Output is correct
8 Correct 10 ms 1992 KB Output is correct
9 Correct 24 ms 4016 KB Output is correct
10 Correct 14 ms 2556 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 0 ms 316 KB Output is correct
3 Correct 1 ms 316 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 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 332 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 1 ms 212 KB Output is correct
2 Correct 0 ms 316 KB Output is correct
3 Correct 1 ms 316 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 1 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 324 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 332 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 8 ms 1108 KB Output is correct
17 Correct 20 ms 2924 KB Output is correct
18 Correct 32 ms 3416 KB Output is correct
19 Correct 76 ms 3100 KB Output is correct
20 Correct 81 ms 3412 KB Output is correct
21 Correct 19 ms 2872 KB Output is correct
22 Correct 1 ms 320 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 16 ms 2124 KB Output is correct
27 Correct 29 ms 2412 KB Output is correct
28 Correct 32 ms 3392 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 18 ms 3192 KB Output is correct
2 Correct 5 ms 980 KB Output is correct
3 Correct 12 ms 2484 KB Output is correct
4 Correct 12 ms 1864 KB Output is correct
5 Correct 15 ms 2900 KB Output is correct
6 Correct 10 ms 2004 KB Output is correct
7 Correct 3 ms 724 KB Output is correct
8 Correct 10 ms 1992 KB Output is correct
9 Correct 24 ms 4016 KB Output is correct
10 Correct 14 ms 2556 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 316 KB Output is correct
13 Correct 1 ms 316 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 1 ms 212 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 324 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 8 ms 1108 KB Output is correct
27 Correct 20 ms 2924 KB Output is correct
28 Correct 32 ms 3416 KB Output is correct
29 Correct 76 ms 3100 KB Output is correct
30 Correct 81 ms 3412 KB Output is correct
31 Correct 19 ms 2872 KB Output is correct
32 Correct 1 ms 320 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 16 ms 2124 KB Output is correct
37 Correct 29 ms 2412 KB Output is correct
38 Correct 32 ms 3392 KB Output is correct
39 Correct 8 ms 1364 KB Output is correct
40 Correct 1 ms 340 KB Output is correct
41 Correct 70 ms 4416 KB Output is correct
42 Correct 30 ms 4736 KB Output is correct
43 Correct 44 ms 4328 KB Output is correct
44 Correct 29 ms 4708 KB Output is correct
45 Correct 27 ms 4940 KB Output is correct
46 Correct 77 ms 4772 KB Output is correct
47 Correct 24 ms 4428 KB Output is correct
48 Correct 42 ms 4428 KB Output is correct
49 Correct 27 ms 4428 KB Output is correct
50 Correct 305 ms 4556 KB Output is correct
51 Correct 327 ms 4800 KB Output is correct
52 Correct 305 ms 4424 KB Output is correct
53 Correct 324 ms 4780 KB Output is correct
54 Correct 300 ms 4488 KB Output is correct
55 Correct 335 ms 4920 KB Output is correct
56 Correct 291 ms 4380 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 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 316 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 316 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 18 ms 3192 KB Output is correct
10 Correct 5 ms 980 KB Output is correct
11 Correct 12 ms 2484 KB Output is correct
12 Correct 12 ms 1864 KB Output is correct
13 Correct 15 ms 2900 KB Output is correct
14 Correct 10 ms 2004 KB Output is correct
15 Correct 3 ms 724 KB Output is correct
16 Correct 10 ms 1992 KB Output is correct
17 Correct 24 ms 4016 KB Output is correct
18 Correct 14 ms 2556 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 0 ms 316 KB Output is correct
21 Correct 1 ms 316 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 1 ms 212 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 324 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 8 ms 1108 KB Output is correct
35 Correct 20 ms 2924 KB Output is correct
36 Correct 32 ms 3416 KB Output is correct
37 Correct 76 ms 3100 KB Output is correct
38 Correct 81 ms 3412 KB Output is correct
39 Correct 19 ms 2872 KB Output is correct
40 Correct 1 ms 320 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 16 ms 2124 KB Output is correct
45 Correct 29 ms 2412 KB Output is correct
46 Correct 32 ms 3392 KB Output is correct
47 Correct 8 ms 1364 KB Output is correct
48 Correct 1 ms 340 KB Output is correct
49 Correct 70 ms 4416 KB Output is correct
50 Correct 30 ms 4736 KB Output is correct
51 Correct 44 ms 4328 KB Output is correct
52 Correct 29 ms 4708 KB Output is correct
53 Correct 27 ms 4940 KB Output is correct
54 Correct 77 ms 4772 KB Output is correct
55 Correct 24 ms 4428 KB Output is correct
56 Correct 42 ms 4428 KB Output is correct
57 Correct 27 ms 4428 KB Output is correct
58 Correct 305 ms 4556 KB Output is correct
59 Correct 327 ms 4800 KB Output is correct
60 Correct 305 ms 4424 KB Output is correct
61 Correct 324 ms 4780 KB Output is correct
62 Correct 300 ms 4488 KB Output is correct
63 Correct 335 ms 4920 KB Output is correct
64 Correct 291 ms 4380 KB Output is correct
65 Correct 1 ms 212 KB Output is correct
66 Correct 0 ms 212 KB Output is correct
67 Incorrect 338 ms 4672 KB Output isn't correct
68 Halted 0 ms 0 KB -