Submission #963633

#	Time	Username	Problem	Language	Result	Execution time	Memory
963633		vladburac	Topovi (COCI15_topovi)	C++17	6 / 120	2071 ms	45652 KiB

topovi

#include <bits/stdc++.h>
using namespace std;
#define pii pair<int, int>
using ll = long long;
const int NMAX = 5e5;
const int VALMAX = 1e6;
const int LOGMAX = 18;
const int INF = 1e9;
const int MOD = 998244353;
mt19937 rnd( chrono::steady_clock::now().time_since_epoch().count() );

/*
#ifndef HOME
  ifstream fin( "regate.in" );
  ofstream fout( "regate.out" );
  #define cin fin
  #define cout fout
#endif // HOME
*/

map<pii, int> power;
map<int, int> l_xor, fCol;
map<int, int> c_xor, fLin;

ll ans = 0;
int n;
void upd( int lin, int col, int put ) {
  ans -= n - fCol[l_xor[lin]];
  ans -= n - fLin[c_xor[col]];
  if( l_xor[lin] ^ c_xor[col] )
    ans++;

  fLin[l_xor[lin]]--;
  l_xor[lin] ^= put;
  fLin[l_xor[lin]]++;

  fCol[c_xor[col]]--;
  c_xor[col] ^= put;
  fCol[c_xor[col]]++;

  ans += n - fCol[l_xor[lin]];
  ans += n - fLin[c_xor[col]];
  if( l_xor[lin] ^ c_xor[col] )
    ans--;
  power[{lin,col}] ^= put;
}
void solve() {
  int k, p, i, lin, col, put, lin1, col1, lin2, col2;
  cin >> n >> k >> p;
  fLin[0] = n, fCol[0] = n;
  for( i = 0; i < n; i++ ) {
    cin >> lin >> col >> put;
    upd( lin, col, put );
  }
  for( i = 0; i < p; i++ ) {
    cin >> lin1 >> col1 >> lin2 >> col2;
    int aux = power[{lin1,col1}];
    upd( lin1, col1, aux );
    upd( lin2, col2, aux );
    cout << ans << "\n";
  }
}
int main() {
  ios_base::sync_with_stdio( false );
  cin.tie( NULL );
  cout.tie( NULL );
  int t = 1;
  //cin >> t;
  while( t-- ) {
    solve();
  }
  return 0;
}

• Subtask 1: 6 / 120