oj.uz

Submission #673338

# Submission time Handle Problem Language Result Execution time Memory
673338 2022-12-20T08:55:49 Z Cutebol Chessboard (IZhO18_chessboard) C++17
16 / 100
 25 ms 1688 KB 
#include <bits/stdc++.h>
 
using namespace std;
 
void fopn(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
#define Scaramouche ios_base::sync_with_stdio(0) ; cin.tie(0) ; cout.tie(0);
#define int long long
#define itn int
#define endl "\n"
#define ff first
#define ss second
   
const int N = 2e5 + 5 ;
const int mod = 1e9 + 7 ;
const int inf = 1e12 ;

int n , k , m , sum , ans = inf ;
int x[N] , y[N] , cnt1[2] ;

void solve(){
	
	cin >> n >> m ;
	if ( m == 0 ){
		for ( int i = 1 ; i <= n/2 ; i ++ ){
			if ( !(n % i)){
				n /= i ;
				ans = min ( ans , (n*n/2)*i*i ) ;
				n *= i ;
			}
		}
		cout << ans ;
		return ;
	}
	int cnt[2] ;
	cnt[1] = n*n/2 , cnt[0] = (n*n+1)/2 ;
	for ( int i = 0 ; i < m ; i ++ ){
		cin >> x[i] >> y[i] >> x[i] >> y[i] ;
		cnt[((x[i]%2)+(y[i]%2))%2] -- ;
		cnt1[((x[i]%2)+(y[i]%2))%2] ++ ;
	}
	cout << min ( cnt[0] + cnt1[1] , cnt[1] + cnt1[0] )  ;
}
 
signed main(){
//  fopn("blocks") ;
    Scaramouche ;
    int t = 1 ;
//    	cin >> t ;
    while ( t -- ) solve() ; 
}

Compilation message

chessboard.cpp: In function 'void fopn(std::string)':
chessboard.cpp:5:31: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | void fopn(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                        ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
chessboard.cpp:5:72: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    5 | void fopn(string name){freopen((name+".in").c_str(),"r",stdin); freopen((name+".out").c_str(),"w",stdout);}
      |                                                                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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 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 1 ms 212 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 20 ms 1212 KB Output is correct
2 Correct 5 ms 596 KB Output is correct
3 Correct 12 ms 872 KB Output is correct
4 Correct 12 ms 1040 KB Output is correct
5 Correct 15 ms 1132 KB Output is correct
6 Correct 10 ms 852 KB Output is correct
7 Correct 3 ms 340 KB Output is correct
8 Correct 10 ms 844 KB Output is correct
9 Correct 25 ms 1688 KB Output is correct
10 Correct 14 ms 1112 KB Output is correct

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 0 ms 340 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 20 ms 1212 KB Output is correct
2 Correct 5 ms 596 KB Output is correct
3 Correct 12 ms 872 KB Output is correct
4 Correct 12 ms 1040 KB Output is correct
5 Correct 15 ms 1132 KB Output is correct
6 Correct 10 ms 852 KB Output is correct
7 Correct 3 ms 340 KB Output is correct
8 Correct 10 ms 844 KB Output is correct
9 Correct 25 ms 1688 KB Output is correct
10 Correct 14 ms 1112 KB Output is correct
11 Incorrect 0 ms 340 KB Output isn't correct
12 Halted 0 ms 0 KB -

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 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 1 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 20 ms 1212 KB Output is correct
10 Correct 5 ms 596 KB Output is correct
11 Correct 12 ms 872 KB Output is correct
12 Correct 12 ms 1040 KB Output is correct
13 Correct 15 ms 1132 KB Output is correct
14 Correct 10 ms 852 KB Output is correct
15 Correct 3 ms 340 KB Output is correct
16 Correct 10 ms 844 KB Output is correct
17 Correct 25 ms 1688 KB Output is correct
18 Correct 14 ms 1112 KB Output is correct
19 Incorrect 0 ms 340 KB Output isn't correct
20 Halted 0 ms 0 KB -