Submission #957419

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
957419	2024-04-03 16:33:24	Ariadna	Topovi (COCI15_topovi)	C++14	0 / 120	1328 ms	40368 KiB

topovi

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#include <bits/stdc++.h>
#define ll long long
using namespace std;
const int MAX_ROOKS = 2e5;
int main() {
    int n, k, p;
    cin >> n >> k >> p;
    map<int, int> xor_rows, xor_columns;
    map<int, int> cnt_rows, cnt_columns;
    cnt_rows[0] = cnt_columns[0] = n;
    map<pair<int, int>, int> rooks;
    
    ll total = 0;
    while (k--) {
        int r, c, x;
        cin >> r >> c >> x;
        rooks[{r, c}] = x;
        total -= n-cnt_columns[xor_rows[r]];
        total -= n-cnt_rows[xor_columns[c]];
        if (xor_rows[r] ^ xor_columns[c]) ++total;
        cnt_rows[xor_rows[r]]--;
        xor_rows[r] ^= rooks[{r, c}];
        cnt_rows[xor_rows[r]]++;
        cnt_columns[xor_columns[c]]--;
 
 
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