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Submission #378529

# Submission time Handle Problem Language Result Execution time Memory
378529 2021-03-17T01:30:08 Z rk42745417 Chessboard (IZhO18_chessboard) C++17
0 / 100
 27 ms 364 KB 
#include <bits/stdc++.h>
using namespace std;

using ll = int64_t;
using ull = uint64_t;
using uint = uint32_t;
using ld = long double;
const int MOD = 1e9 + 7;
const int INF = 0x3f3f3f3f;
const ll LINF = 2e18;
const double EPS = 1e-9;
#define EMT ios::sync_with_stdio(0); cin.tie(0);

bool prime_test(int n) {
	for(int i = 2; i < n; i++)
		if(n % i == 0)
			return false;
	return true;
}
void solve(int n) {

}
void solve_2(int n) {
	int cnt[2] = {0}, k;
	cin >> k;
	for(int i = 0, a, b, c, d; i < n; i++) {
		cin >> a >> b >> c >> d;
		cnt[(a + b) % 2]++;
	}
	ll a = 1LL * n * n / 2, b = 1LL * n * n - a;
	cout << min(cnt[1] + b - cnt[0], cnt[0] + a - cnt[1]) << '\n';
}
signed main() { EMT
	int n;
	cin >> n;
	if(prime_test(n))
		solve_2(n);
	else
		solve(n);
}

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 27 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 27 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Incorrect 1 ms 364 KB Output isn't correct
2 Halted 0 ms 0 KB -