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Submission #89431

# Submission time Handle Problem Language Result Execution time Memory
89431 2018-12-14T09:36:18 Z RAkhshon Chessboard (IZhO18_chessboard) C++14
8 / 100
 32 ms 1428 KB 
#include<bits/stdc++.h>
#define ll long long
using namespace std;
///map< ll , ll > dp[101101];
ll a[101101], b[101101];
int main(){
ios_base::sync_with_stdio(0);
ll n, k;
cin>>n>>k;
for( ll i =1; i <= k ; i ++ ){
    cin>>a[i]>>b[i]>>a[i]>>b[i];
}
ll ans = 10000000000;
for( ll i = 1 ; i*i <= n ; i ++ ){
    if( n % i == 0 ){
            ll m=i, kolp1=0,kolp2=0 ;
            kolp1=((n*n)/(m*m))/2+(((n*n)/(m*m))%2);
            kolp2=((n*n)/(m*m))/2;
            kolp1=kolp1*m*m;
            kolp2=kolp2*m*m;
            //cout<<kolp1<<' '<<kolp2<<' '<<m<<endl;
            for( ll x = 1; x <= k ; x ++ ){
                if( (a[x]/m)%2!=0 && (b[x]/m)%2!=0 ){
                    kolp1--;
                }
                else
                if( (a[x]/m)%2==0 && (b[x]/m)%2==0 ){
                    kolp1--;
                }
                else {
                    kolp1++;
                }

                if( (a[x]/m)%2==0 && (b[x]/m)%2!=0 ){
                    kolp2--;
                }
                else
                if( (a[x]/m)%2!=0 && (b[x]/m)%2!=0 ){
                    kolp2--;
                }
                else {
                    kolp2++;
                }
            }
           // cout<<kolp1<<' '<<kolp2<<' '<<m<<endl;

           ans=min(ans,min(kolp1,kolp2));
            m=n/i;
            if( m != n ){
            kolp1=((n*n)/(m*m))/2+((n*n)/(m*m))%2;
            kolp2=((n*n)/(m*m))/2;
            kolp1=kolp1*m*m;
            kolp2=kolp2*m*m;
          /// cout<<kolp1<<' '<<kolp2<<' '<<m<<endl;
            for( ll x = 1; x <= k ; x ++ ){
           if( (a[x]/m)%2!=0 && (b[x]/m)%2!=0 ){
                    kolp1--;
                }
                else
                if( (a[x]/m)%2==0 && (b[x]/m)%2==0 ){
                    kolp1--;
                }
                else {
                    kolp1++;
                }

                if( (a[x]/m)%2==0 && (b[x]/m)%2!=0 ){
                    kolp2--;
                }
                else
                if( (a[x]/m)%2!=0 && (b[x]/m)%2!=0 ){
                    kolp2--;
                }
                else {
                    kolp2++;
                }
        }
            }
           ans=min(ans,min(kolp1,kolp2));

    }
}
cout<<ans;
}
/**
3 3
2 2 2 2
2 3 2 3
3 2 3 2



//////


9 10
1 1 1 1
4 4 4 4
4 5 4 5
4 6 4 6
5 4 5 4
5 5 5 5
5 6 5 6
6 4 6 4
6 5 6 5
6 6 6 6

**/

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 500 KB Output is correct
3 Correct 2 ms 500 KB Output is correct
4 Correct 2 ms 500 KB Output is correct
5 Correct 2 ms 500 KB Output is correct
6 Correct 2 ms 532 KB Output is correct
7 Correct 2 ms 532 KB Output is correct
8 Correct 2 ms 532 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 1428 KB Output is correct
2 Incorrect 9 ms 1428 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 1428 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 1428 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 1428 KB Output is correct
2 Incorrect 9 ms 1428 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 376 KB Output is correct
2 Correct 2 ms 500 KB Output is correct
3 Correct 2 ms 500 KB Output is correct
4 Correct 2 ms 500 KB Output is correct
5 Correct 2 ms 500 KB Output is correct
6 Correct 2 ms 532 KB Output is correct
7 Correct 2 ms 532 KB Output is correct
8 Correct 2 ms 532 KB Output is correct
9 Correct 32 ms 1428 KB Output is correct
10 Incorrect 9 ms 1428 KB Output isn't correct
11 Halted 0 ms 0 KB -