oj.uz

Submission #91830

# Submission time Handle Problem Language Result Execution time Memory
91830 2018-12-30T09:39:06 Z emil_physmath Chessboard (IZhO18_chessboard) C++14
0 / 100
 27 ms 2300 KB 
#include <iostream>
#include <stdio.h>
#include <set>
using namespace std;
const long long MAXK=100005;

long long mini[MAXK], maxi[MAXK], minj[MAXK], maxj[MAXK];

bool IsWhite(long long, long long);
long long FindAns(long long n, long long k);
int main()
{
	long long n, k;
	cin>>n>>k;
	for (long long i=0; i<k; i++)
		scanf("%lld%lld%lld%lld", mini+i, minj+i, maxi+i, maxj+i);
	cout<<FindAns(n, k)<<'\n';

	char I;
	cin >> I;
	return 0;
}

long long FindAns(long long n, long long k)
{
	long long shouldWhite=0, shouldBlack=(n*n)/2;
	for (long long i=0; i<k; i++)
    {
		if (IsWhite(maxi[i], maxj[i]))
			shouldWhite++;
      	else
          	shouldBlack--;
	}
	return min(1LL+shouldWhite+shouldBlack, n*n-(shouldWhite+shouldBlack));
}

bool IsWhite(long long i, long long j)
{
	return ((i+j)%2==0);
}

Compilation message

chessboard.cpp: In function 'int main()':
chessboard.cpp:16:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%lld%lld%lld%lld", mini+i, minj+i, maxi+i, maxj+i);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 2300 KB Output is correct
2 Incorrect 8 ms 1144 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 3 ms 376 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 27 ms 2300 KB Output is correct
2 Incorrect 8 ms 1144 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 256 KB Output is correct
2 Incorrect 2 ms 376 KB Output isn't correct
3 Halted 0 ms 0 KB -