oj.uz

Submission #43890

# Submission time Handle Problem Language Result Execution time Memory
43890 2018-03-27T06:39:37 Z Tenuun Chessboard (IZhO18_chessboard) C++17
39 / 100
 247 ms 728 KB 
#include<bits/stdc++.h>

using namespace std;

int main(){
	int n, k, x, y, x1, y1, res=INT_MAX;
	cin >> n >> k;
	vector<int>fac;
	map<int, int>map;
	for(int i=1; i<n; i++){
		if(n%i==0){
			fac.push_back(i);
		}
	}
	if(k==0){
		int res=(n*n)/2;
		int i=fac.size()-1;
		for(int i=fac.size()-1; i>=0; i--){
			if((n/fac[i])%2){	
				res=(n*n-fac[i]*fac[i])/2;	
				cout << res; return 0;
			}
		}
		cout << res;
		return 0;
	}
	for(int j=0; j<k; j++){
		cin >> x >> y >> x1 >> y1;
		for(int i=0; i<fac.size(); i++){
			map[i+1]++;
			map[i+1]--;
			if((x%(2*fac[i])>=1 && x%(2*fac[i])<=fac[i] && y%(2*fac[i])<=fac[i]&&y%(2*fac[i])>=1) ||((x%(2*fac[i])==0 || x%(2*fac[i])>fac[i]) && (y%(2*fac[i])>fac[i]||y%(2*fac[i])==0)) )map[i+1]++;
		}
	}
	int i=0;
	for (auto it=map.begin(); it!=map.end(); ++it){
		int res1, res2;
		i=it->first-1;
		//cout << it->first << it->second << endl;
		if(n/fac[i]%2){	
			res1=(n*n-fac[i]*fac[i])/2+fac[i]*fac[i]-it->second+k-it->second;
			res2=it->second+(n*n-fac[i]*fac[i])/2-(k-it->second);
			res2=n*n-res1;
				
		}
		else{
			res1=(n*n)/2-it->second+k-it->second;
			res2=n*n-res1;
		}
		//cout << it->second << " " << res1 << " " << res2 << endl;
		res=min(res, res1);
		res=min(res, res2);
		//i++;
	}
	cout << res;
    return 0;
}

Compilation message

chessboard.cpp: In function 'int main()':
chessboard.cpp:17:7: warning: unused variable 'i' [-Wunused-variable]
   int i=fac.size()-1;
       ^
chessboard.cpp:29:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for(int i=0; i<fac.size(); i++){
                ~^~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 488 KB Output is correct
3 Correct 2 ms 488 KB Output is correct
4 Correct 2 ms 488 KB Output is correct
5 Correct 2 ms 488 KB Output is correct
6 Correct 2 ms 488 KB Output is correct
7 Correct 2 ms 524 KB Output is correct
8 Correct 2 ms 524 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 104 ms 524 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 2 ms 528 KB Output is correct
2 Correct 2 ms 528 KB Output is correct
3 Correct 2 ms 552 KB Output is correct
4 Correct 3 ms 576 KB Output is correct
5 Correct 3 ms 576 KB Output is correct
6 Correct 2 ms 576 KB Output is correct
7 Correct 3 ms 592 KB Output is correct
8 Correct 3 ms 608 KB Output is correct
9 Correct 3 ms 608 KB Output is correct
10 Correct 2 ms 608 KB Output is correct
11 Correct 2 ms 608 KB Output is correct
12 Correct 2 ms 608 KB Output is correct
13 Correct 3 ms 608 KB Output is correct
14 Correct 3 ms 608 KB Output is correct
15 Correct 3 ms 608 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 528 KB Output is correct
2 Correct 2 ms 528 KB Output is correct
3 Correct 2 ms 552 KB Output is correct
4 Correct 3 ms 576 KB Output is correct
5 Correct 3 ms 576 KB Output is correct
6 Correct 2 ms 576 KB Output is correct
7 Correct 3 ms 592 KB Output is correct
8 Correct 3 ms 608 KB Output is correct
9 Correct 3 ms 608 KB Output is correct
10 Correct 2 ms 608 KB Output is correct
11 Correct 2 ms 608 KB Output is correct
12 Correct 2 ms 608 KB Output is correct
13 Correct 3 ms 608 KB Output is correct
14 Correct 3 ms 608 KB Output is correct
15 Correct 3 ms 608 KB Output is correct
16 Correct 32 ms 608 KB Output is correct
17 Correct 92 ms 636 KB Output is correct
18 Correct 123 ms 636 KB Output is correct
19 Correct 190 ms 636 KB Output is correct
20 Correct 247 ms 636 KB Output is correct
21 Correct 103 ms 636 KB Output is correct
22 Correct 2 ms 636 KB Output is correct
23 Correct 61 ms 636 KB Output is correct
24 Correct 119 ms 728 KB Output is correct
25 Correct 13 ms 728 KB Output is correct
26 Correct 66 ms 728 KB Output is correct
27 Correct 89 ms 728 KB Output is correct
28 Correct 135 ms 728 KB Output is correct
29 Correct 38 ms 728 KB Output is correct
30 Correct 6 ms 728 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 104 ms 524 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 488 KB Output is correct
3 Correct 2 ms 488 KB Output is correct
4 Correct 2 ms 488 KB Output is correct
5 Correct 2 ms 488 KB Output is correct
6 Correct 2 ms 488 KB Output is correct
7 Correct 2 ms 524 KB Output is correct
8 Correct 2 ms 524 KB Output is correct
9 Incorrect 104 ms 524 KB Output isn't correct
10 Halted 0 ms 0 KB -