Submission #650126

#	Time	Username	Problem	Language	Result	Execution time	Memory
650126		dozer	Topovi (COCI15_topovi)	C++14	120 / 120	1018 ms	48204 KiB

topovi

#include <bits/stdc++.h>
using namespace std;
#define fileio() freopen("input.txt", "r", stdin), freopen("output.txt", "w", stdout)
#define fastio() cin.tie(0), ios_base::sync_with_stdio(0)
#define pb push_back
#define sp " "
#define endl "\n"
#define pii pair<int, int>
#define st first
#define nd second
#define N 1000005
#define int long long

int r[N], c[N], x[N];
map<int, int> cntr, cntc, valr, valc;
map<pii, int> pw;

int32_t main()
{
	fastio();

	int n, k, p;
	cin>>n>>k>>p;
	cntr[0] = n, cntc[0] = n;
	for (int i = 1; i <= k; i++)
	{
		cin>>r[i]>>c[i]>>x[i];
		cntr[valr[r[i]]]--;
		valr[r[i]] ^= x[i];
		cntr[valr[r[i]]]++;
		cntc[valc[c[i]]]--;
		valc[c[i]] ^= x[i];
		cntc[valc[c[i]]]++;
		pw[{r[i], c[i]}] = x[i];
	}
	int ans = n * n;
	for (auto i : cntr) ans -= i.nd * cntc[i.st];
	while(p--)
	{
		int r[3], c[3];
		cin>>r[1]>>c[1]>>r[2]>>c[2];
		int xx = pw[{r[1], c[1]}];
		pw[{r[1], c[1]}] = 0;
		pw[{r[2], c[2]}] = xx;
		for (int i = 1; i <= 2; i++)
		{
			ans += cntc[valr[r[i]]];
			cntr[valr[r[i]]]--;
			ans += cntr[valc[c[i]]];
			cntc[valc[c[i]]]--;
			valr[r[i]] ^= xx;
			cntr[valr[r[i]]]++;
			ans -= cntc[valr[r[i]]];
			valc[c[i]] ^= xx;
			cntc[valc[c[i]]]++;
			ans -= cntr[valc[c[i]]];
		}
		cout<<ans<<endl;
	}

	cerr<<"time taken : "<<(float)clock() / CLOCKS_PER_SEC<<" seconds\n";
}

• Subtask 1: 120 / 120