oj.uz

Submission #168435

# Submission time Handle Problem Language Result Execution time Memory
168435 2019-12-13T06:07:56 Z mosiashvililuka Chessboard (IZhO18_chessboard) C++14
39 / 100
 93 ms 11512 KB 
#include<bits/stdc++.h>
using namespace std;
long long a,b,c,d,e,i,j,mas[1009][1009],jj,jjj,pas,zx,xc,zzx,zxc;
pair <pair <long long, long long>, pair <long long, long long> > p[100009];
int main(){
	ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0);
	cin>>a>>b;
	pas=a*a;
	for(i=1; i<=b; i++){
		cin>>p[i].first.first>>p[i].first.second>>p[i].second.first>>p[i].second.second;
		if(a<=1000){
			mas[p[i].first.first][p[i].first.second]++;
		}else{
			if((p[i].first.first+p[i].first.second)%2==0) zx++; else xc++;
		}
	}
	zzx=a/2*a/2;
	zxc=(a/2+1)*(a/2+1);
	if(a>1000){
		d=xc+zxc-zx;
		e=zx+zzx-xc;
		cout<<min(d,e);
		return 0;
	}
	for(i=1; i<=1002; i++){
		for(j=1; j<=1002; j++) mas[i][j]+=mas[i-1][j]+mas[i][j-1]-mas[i-1][j-1];
	}
	for(c=1; c<a; c++){
		if(a%c!=0) continue;
		long long ans=0;
		e=c*c;
		for(i=c; i<=a; i+=c){
			for(j=c; j<=a; j+=c){
				d=mas[i][j]-mas[i-c][j]-mas[i][j-c]+mas[i-c][j-c];
				if((i/c+j/c)%2==0) ans+=d; else ans+=e-d;
			}
		}
/*		if(ans==11){
			cout<<c<<" 1"<<endl;
		}*/
		if(pas>ans) pas=ans;
		ans=0;
		for(i=c; i<=a; i+=c){
			for(j=c; j<=a; j+=c){
				d=mas[i][j]-mas[i-c][j]-mas[i][j-c]+mas[i-c][j-c];
				if((i/c+j/c)%2==1) ans+=d; else ans+=e-d;
			}
		}
/*		if(ans==11){
			cout<<c<<" 2"<<endl;
		}*/
		if(pas>ans) pas=ans;
	}
	cout<<pas;
	return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 8312 KB Output is correct
2 Correct 12 ms 8184 KB Output is correct
3 Correct 12 ms 8312 KB Output is correct
4 Correct 12 ms 8312 KB Output is correct
5 Correct 12 ms 8184 KB Output is correct
6 Correct 12 ms 8312 KB Output is correct
7 Correct 12 ms 8312 KB Output is correct
8 Correct 12 ms 8184 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 30 ms 3192 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 8312 KB Output is correct
2 Correct 11 ms 8312 KB Output is correct
3 Correct 12 ms 8312 KB Output is correct
4 Correct 12 ms 8320 KB Output is correct
5 Correct 12 ms 8316 KB Output is correct
6 Correct 12 ms 8312 KB Output is correct
7 Correct 12 ms 8336 KB Output is correct
8 Correct 12 ms 8356 KB Output is correct
9 Correct 12 ms 8312 KB Output is correct
10 Correct 12 ms 8184 KB Output is correct
11 Correct 12 ms 8312 KB Output is correct
12 Correct 12 ms 8312 KB Output is correct
13 Correct 12 ms 8444 KB Output is correct
14 Correct 12 ms 8288 KB Output is correct
15 Correct 12 ms 8312 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 8312 KB Output is correct
2 Correct 11 ms 8312 KB Output is correct
3 Correct 12 ms 8312 KB Output is correct
4 Correct 12 ms 8320 KB Output is correct
5 Correct 12 ms 8316 KB Output is correct
6 Correct 12 ms 8312 KB Output is correct
7 Correct 12 ms 8336 KB Output is correct
8 Correct 12 ms 8356 KB Output is correct
9 Correct 12 ms 8312 KB Output is correct
10 Correct 12 ms 8184 KB Output is correct
11 Correct 12 ms 8312 KB Output is correct
12 Correct 12 ms 8312 KB Output is correct
13 Correct 12 ms 8444 KB Output is correct
14 Correct 12 ms 8288 KB Output is correct
15 Correct 12 ms 8312 KB Output is correct
16 Correct 51 ms 9180 KB Output is correct
17 Correct 77 ms 11000 KB Output is correct
18 Correct 83 ms 11512 KB Output is correct
19 Correct 92 ms 11168 KB Output is correct
20 Correct 93 ms 11512 KB Output is correct
21 Correct 76 ms 10872 KB Output is correct
22 Correct 50 ms 8312 KB Output is correct
23 Correct 65 ms 9720 KB Output is correct
24 Correct 81 ms 11256 KB Output is correct
25 Correct 44 ms 8824 KB Output is correct
26 Correct 63 ms 10360 KB Output is correct
27 Correct 77 ms 10656 KB Output is correct
28 Correct 88 ms 11384 KB Output is correct
29 Correct 53 ms 9592 KB Output is correct
30 Correct 46 ms 8440 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 30 ms 3192 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 8312 KB Output is correct
2 Correct 12 ms 8184 KB Output is correct
3 Correct 12 ms 8312 KB Output is correct
4 Correct 12 ms 8312 KB Output is correct
5 Correct 12 ms 8184 KB Output is correct
6 Correct 12 ms 8312 KB Output is correct
7 Correct 12 ms 8312 KB Output is correct
8 Correct 12 ms 8184 KB Output is correct
9 Incorrect 30 ms 3192 KB Output isn't correct
10 Halted 0 ms 0 KB -