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Submission #338385

# Submission time Handle Problem Language Result Execution time Memory
338385 2020-12-23T04:55:35 Z boykut Chessboard (IZhO18_chessboard) C++14
8 / 100
 22 ms 364 KB 
#include <bits/stdc++.h>

using namespace std;

signed main() {
   ios::sync_with_stdio(0);
   cin.tie(0);
   int n, k;
   cin >> n >> k;
   if (k == 0) {
      int ans = -1;
      for (int i = 2; i <= n; i++) {
         if (n % i == 0) {
            int m = n / i;
            
            int res = ((n*n) / (m*m)) / 2 * (m *m);
            
            if (ans == -1 || ans > res)
               ans = res;
         }
      }
      cout << ans << '\n';
   } else {
      int cnt[] = {0, 0};
      for (int i = 0, x, y; i < k; i++) {
         cin >> x >> y >> x >> y;
         cnt[(x+y)%2]++;
      }
      if (n == 2) {
         cout << 2 - max(cnt[0], cnt[1]);
      } else {
         cout << min(n*n/2+1-cnt[0]+cnt[1], n*n/2-cnt[1]+cnt[0]);
      }
   }
   return 0;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Incorrect 22 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 22 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 Correct 1 ms 364 KB Output is correct
2 Correct 0 ms 364 KB Output is correct
3 Correct 0 ms 364 KB Output is correct
4 Correct 0 ms 364 KB Output is correct
5 Correct 0 ms 364 KB Output is correct
6 Correct 0 ms 364 KB Output is correct
7 Correct 0 ms 364 KB Output is correct
8 Correct 1 ms 364 KB Output is correct
9 Incorrect 22 ms 364 KB Output isn't correct
10 Halted 0 ms 0 KB -