Submission #692883

#	Time	Username	Problem	Language	Result	Execution time	Memory
692883		tolbi	Chessboard (IZhO18_chessboard)	C++17	8 / 100	25 ms	2384 KiB

chessboard

#pragma optimize("Bismillahirrahmanirrahim")
//█▀█─█──█──█▀█─█─█
//█▄█─█──█──█▄█─█■█
//█─█─█▄─█▄─█─█─█─█
//Allahuekber
//ahmet23 orz...
//Sani buyuk Osman Pasa Plevneden cikmam diyor.
//FatihSultanMehmedHan
//YavuzSultanSelimHan
//AbdulhamidHan
#define author tolbi
#include <bits/stdc++.h>
#ifdef LOCAL
	#include "23.h"
#endif
#define int long long
#define endl '\n'
#define vint(x) vector<int> x
#define deci(x) int x;cin>>x;
#define decstr(x) string x;cin>>x;
#define cinarr(x) for (auto &it : x) cin>>it;
#define coutarr(x) for (auto &it : x) cout<<it<<" ";cout<<endl;
#define sortarr(x) sort(x.begin(),x.end())
#define sortrarr(x) sort(x.rbegin(),x.rend())
#define det(x) cout<<"NO\0YES"+x*3<<endl;
#define INF LONG_LONG_MAX
#define rev(x) reverse(x.begin(),x.end());
#define ios ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define tol(bi) (1LL<<((int)(bi)))
const int MOD = 1e9+7;
using namespace std;
mt19937 ayahya(chrono::high_resolution_clock().now().time_since_epoch().count());
int32_t main(){
	ios;
	int t=1;
	int tno = 0;
	if (!t) cin>>t;
	while (t-(tno++)){
		deci(n);deci(k);
		int say = 0;
		for (int i = 0; i < k; i++){
			deci(x1);deci(y1);deci(x2);deci(y2);
			x1--,y1--;
			say+=(x1%2)^(y1%2);
		}
		int blk = n*n/2;
		int whit = n*n-blk;
		cout<<min(blk-say+k-say,say+whit-(k-say))<<endl;
	}
}

Compilation message (stderr)

chessboard.cpp:1: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    1 | #pragma optimize("Bismillahirrahmanirrahim")
      |

• Subtask 1: 0 / 8
• Subtask 2: 8 / 8
• Subtask 3: 0 / 15
• Subtask 4: 0 / 16
• Subtask 5: 0 / 23
• Subtask 6: 0 / 30