Submission #624502

#	Time	Username	Problem	Language	Result	Execution time	Memory
624502		MilosMilutinovic	Topovi (COCI15_topovi)	C++14	30 / 120	1042 ms	37560 KiB

topovi

/**
 *    author:  wxhtzdy
 *    created: 07.08.2022 16:59:44
**/
#include <bits/stdc++.h>

using namespace std;

int main() {
  ios::sync_with_stdio(false);
  cin.tie(0);  
  int n, k, p;
  cin >> n >> k >> p;
  long long ans = n * n;
  map<int, int> cx;
  map<int, int> cy;
  cx[0] = n;   
  cy[0] = n;
  map<int, int> xs;
  map<int, int> ys;
  map<pair<int, int>, int> val;
  function<void(int, int, int)> Add = [&](int x, int y, int v) {
    ans -= cx[ys[y]];
    ans -= cy[xs[x]];
    val[{x, y}] = v;
    cx[xs[x]] -= 1;
    cy[ys[y]] -= 1;
    xs[x] ^= v;
    ys[y] ^= v;
    cx[xs[x]] += 1;
    cy[ys[y]] += 1;
    ans += cx[ys[y]];
    ans += cy[xs[x]];
  };
  function<void(int, int, int)> Remove = [&](int x, int y, int v) {
    ans -= cx[ys[y]];
    ans -= cy[xs[x]];
    val[{x, y}] = 0;
    cx[xs[x]] -= 1;
    cy[ys[y]] -= 1;
    xs[x] ^= v;
    ys[y] ^= v;
    cx[xs[x]] += 1;
    cy[ys[y]] += 1;
    ans += cx[ys[y]];
    ans += cy[xs[x]];
  };
  for (int i = 0; i < k; i++) {
    int x, y, a;
    cin >> x >> y >> a;
    Add(x, y, a);
  }
  ans = 0;
  for (auto& p : cx) {
    ans += p.second * 1LL * cy[p.first];
  }
  while (p--) {
    int xa, ya, xb, yb;
    cin >> xa >> ya >> xb >> yb;
    Add(xb, yb, val[{xa, ya}]);
    Remove(xa, ya, val[{xa, ya}]);
    cout << n * n - ans << '\n';
  }                                                                  
  return 0;
}

• Subtask 1: 30 / 120