oj.uz

Submission #43889

# Submission time Handle Problem Language Result Execution time Memory
43889 2018-03-27T06:38:19 Z Tenuun Chessboard (IZhO18_chessboard) C++17
39 / 100
 213 ms 648 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;
			//cout << it->second << " " << res1 << " " << res2 << endl;	
		}
		else{
			res1=(n*n)/2-it->second+k-it->second;
			res2=n*n-res1;
		}
		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 1 ms 376 KB Output is correct
3 Correct 2 ms 556 KB Output is correct
4 Correct 2 ms 556 KB Output is correct
5 Correct 2 ms 556 KB Output is correct
6 Correct 2 ms 556 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 2 ms 596 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 94 ms 596 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 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 2 ms 596 KB Output is correct
4 Correct 3 ms 596 KB Output is correct
5 Correct 2 ms 596 KB Output is correct
6 Correct 2 ms 596 KB Output is correct
7 Correct 3 ms 596 KB Output is correct
8 Correct 2 ms 596 KB Output is correct
9 Correct 2 ms 596 KB Output is correct
10 Correct 2 ms 596 KB Output is correct
11 Correct 3 ms 596 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 3 ms 596 KB Output is correct
14 Correct 3 ms 596 KB Output is correct
15 Correct 3 ms 596 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 596 KB Output is correct
2 Correct 2 ms 596 KB Output is correct
3 Correct 2 ms 596 KB Output is correct
4 Correct 3 ms 596 KB Output is correct
5 Correct 2 ms 596 KB Output is correct
6 Correct 2 ms 596 KB Output is correct
7 Correct 3 ms 596 KB Output is correct
8 Correct 2 ms 596 KB Output is correct
9 Correct 2 ms 596 KB Output is correct
10 Correct 2 ms 596 KB Output is correct
11 Correct 3 ms 596 KB Output is correct
12 Correct 2 ms 596 KB Output is correct
13 Correct 3 ms 596 KB Output is correct
14 Correct 3 ms 596 KB Output is correct
15 Correct 3 ms 596 KB Output is correct
16 Correct 33 ms 596 KB Output is correct
17 Correct 93 ms 636 KB Output is correct
18 Correct 115 ms 636 KB Output is correct
19 Correct 199 ms 636 KB Output is correct
20 Correct 213 ms 648 KB Output is correct
21 Correct 95 ms 648 KB Output is correct
22 Correct 2 ms 648 KB Output is correct
23 Correct 58 ms 648 KB Output is correct
24 Correct 106 ms 648 KB Output is correct
25 Correct 14 ms 648 KB Output is correct
26 Correct 70 ms 648 KB Output is correct
27 Correct 91 ms 648 KB Output is correct
28 Correct 113 ms 648 KB Output is correct
29 Correct 44 ms 648 KB Output is correct
30 Correct 5 ms 648 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 94 ms 596 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 1 ms 376 KB Output is correct
3 Correct 2 ms 556 KB Output is correct
4 Correct 2 ms 556 KB Output is correct
5 Correct 2 ms 556 KB Output is correct
6 Correct 2 ms 556 KB Output is correct
7 Correct 2 ms 596 KB Output is correct
8 Correct 2 ms 596 KB Output is correct
9 Incorrect 94 ms 596 KB Output isn't correct
10 Halted 0 ms 0 KB -