Submission #81962

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
81962	2018-10-28 09:01:45	Good	Chessboard (IZhO18_chessboard)	C++11	100 / 100	812 ms	6404 KiB

chessboard

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#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#define ff first
#define ss second
#define Maxn 100009
#define ll long long
#define pb push_back
#define Inf 1000000009
#define ppb() pop_back()
#define pii pair <int , int>
#define mid(x, y) (x + y) / 2
#define all(x) x.begin(),x.end()
#define llInf 1000000000000000009
#define tr(i, c) for(__typeof(c).begin() i = (c).begin() ; i != (c).end() ; i++)
using namespace std;
using namespace __gnu_pbds;
typedef tree <int, null_type, less <int>, rb_tree_tag, tree_order_statistics_node_update> order;
int n, k;
pii x[Maxn];
pii y[Maxn];
ll ans = llInf;
vector <int> A;
bool calc (int x, int y, int z) {
  x --, y --;
  return ((x / z) % 2) ^ ((y / z) % 2);
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

chessboard.cpp: In function 'int main()':
chessboard.cpp:40:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d%d", &n, &k);
  ~~~~~~^~~~~~~~~~~~~~~~
chessboard.cpp:43:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf ("%d%d%d%d", &x[i].ff, &y[i].ff, &x[i].ss, &y[i].ss); 
   ~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

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