Submission #956353

#	Time	Username	Problem	Language	Result	Execution time	Memory
956353		Ariadna	Topovi (COCI15_topovi)	C++14	30 / 120	351 ms	65536 KiB

topovi

#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> rows, columns;
    map<pair<int, int>, int> rooks;
    while (k--) {
        int r, c, x;
        cin >> r >> c >> x;
        --r; --c;
        rows[r] ^= x;
        columns[c] ^= x;
        rooks[{r, c}] = x;
    }
    ll total = 0;
    for (int i = 0; i < n; ++i) {
        for (int j = 0; j < n; ++j) {
            if (((rows[i] ^ rooks[{i, j}]) ^ (columns[j] ^ rooks[{i, j}])) > 0) ++total;
        }
    }
    while (p--) {
        int r1, c1, r2, c2;
        cin >> r1 >> c1 >> r2 >> c2; 
        --r1; --r2; --c1; --c2;
        for (int i = 0; i < n; ++i) {
            if (i == c1) continue;
            if (((columns[i] ^ rooks[{r1, i}]) ^ (rows[r1] ^ rooks[{r1, i}])) > 0 && ((columns[i] ^ rooks[{r1, i}]) ^ ((rows[r1] ^ rooks[{r1, i}]) ^ rooks[{r1, c1}])) == 0) --total;
            else if (((columns[i] ^ rooks[{r1, i}]) ^ (rows[r1] ^ rooks[{r1, i}])) == 0 && ((columns[i] ^ rooks[{r1, i}]) ^ ((rows[r1] ^ rooks[{r1, i}]) ^ rooks[{r1, c1}])) > 0) ++total;
        }
        for (int i = 0; i < n; ++i) {
            if (i == r1) continue;
            if (((columns[c1] ^ rooks[{i, c1}]) ^ (rows[i] ^ rooks[{i, c1}])) > 0 && (((columns[c1] ^ rooks[{i, c1}]) ^ rooks[{r1, c1}]) ^ (rows[i] ^ rooks[{i, c1}])) == 0) --total;
            else if (((columns[c1] ^ rooks[{i, c1}]) ^ (rows[i] ^ rooks[{i, c1}])) == 0 && (((columns[c1] ^ rooks[{i, c1}]) ^ rooks[{r1, c1}]) ^ (rows[i] ^ rooks[{i, c1}])) > 0) ++total;
        }
        rows[r1] ^= rooks[{r1, c1}];
        columns[c1] ^= rooks[{r1, c1}];
        rooks[{r2, c2}] = rooks[{r1, c1}];
        rooks[{r1, c1}] = 0;
        for (int i = 0; i < n; ++i) {
            if (i == c2) continue;
            if (((columns[i] ^ rooks[{r2, i}]) ^ (rows[r2] ^ rooks[{r2, i}])) == 0 && ((columns[i] ^ rooks[{r2, i}]) ^ ((rows[r2] ^ rooks[{r2, i}]) ^ rooks[{r2, c2}])) > 0) ++total;
            else if (((columns[i] ^ rooks[{r2, i}]) ^ (rows[r2] ^ rooks[{r2, i}])) > 0 && ((columns[i] ^ rooks[{r2, i}]) ^ ((rows[r2] ^ rooks[{r2, i}]) ^ rooks[{r2, c2}])) == 0) --total;
        }
        for (int i = 0; i < n; ++i) {
            if (i == r2) continue;
            if (((columns[c2] ^ rooks[{i, c2}]) ^ (rows[i] ^ rooks[{i, c2}])) == 0 && ((columns[c2] ^ rooks[{i, c2}] ^ rooks[{r2, c2}]) ^ (rows[i] ^ rooks[{i, c2}])) > 0) ++total;
            else if (((columns[c2] ^ rooks[{i, c2}]) ^ (rows[i] ^ rooks[{i, c2}])) > 0 && ((columns[c2] ^ rooks[{i, c2}] ^ rooks[{r2, c2}]) ^ (rows[i] ^ rooks[{i, c2}])) == 0) --total;
        }
        rows[r2] ^= rooks[{r2, c2}];
        columns[c2] ^= rooks[{r2, c2}];

        cout << total << '\n';
    }

    return 0;
}

• Subtask 1: 30 / 120