Submission #1088137

#	Time	Username	Problem	Language	Result	Execution time	Memory
1088137		nguyen31hoang08minh2003	Topovi (COCI15_topovi)	C++17	120 / 120	596 ms	56404 KiB

topovi

#include <set>
#include <map>
#include <cmath>
#include <queue>
#include <deque>
#include <stack>
#include <math.h>
#include <bitset>
#include <vector>
#include <string>
#include <cstdio>
#include <cctype>
#include <numeric>
#include <fstream>
#include <sstream>
#include <cstdlib>
#include <iomanip>
#include <cassert>
#include <cstring>
#include <stdio.h>
#include <string.h>
#include <iterator>
#include <iostream>
#include <algorithm>
#include <strings.h>
#include <functional>
#include <unordered_set>
#include <unordered_map>
#define fore(i, a, b) for (int i = (a), i##_last = (b); i < i##_last; ++i)
#define fort(i, a, b) for (int i = (a), i##_last = (b); i <= i##_last; ++i)
#define ford(i, a, b) for (int i = (a), i##_last = (b); i >= i##_last; --i)
#define fi first
#define se second
#define pb push_back
#define sz(x) ((int)(x).size())
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
using namespace std;
using ll = long long;
using ld = long double;

template<class A, class B> bool maxi(A &a, const B &b) {return (a < b) ? (a = b, true):false;};
template<class A, class B> bool mini(A &a, const B &b) {return (a > b) ? (a = b, true):false;};

typedef unsigned long long ull;
typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<vii> vvii;

constexpr int MAX_N = 1E9, MAX_K = 1E5, MAX_P = 1E5;

map<int, int> rows, columns, rowCount, columnCount;
int N, K, P, R[MAX_K], C[MAX_K], X[MAX_K];
map<int, map<int, int> > which;
ll zeros, area;

int getValue(const map<int, int> &f, const int key) {
    const map<int, int>::const_iterator element = f.find(key);
    if (element == f.cend())
        return 0;
    return element -> second;
}

signed main() {

    int R1, C1, R2, C2;

    #ifdef LOCAL
    freopen("input.INP", "r", stdin);
    #endif // LOCAL
    cin.tie(0) -> sync_with_stdio(0);
    cout.tie(0);

    cin >> N >> K >> P;

    fore(i, 0, K) {
        cin >> R[i] >> C[i] >> X[i];
        rows[R[i]] ^= X[i];
        columns[C[i]] ^= X[i];
        which[R[i]][C[i]] = i;
    }

    area = 1LL * N * N;

    rowCount[0] = columnCount[0] = N;

    for (const auto &[key, value] : rows) {
        if (value == 0)
            continue;
        --rowCount[0];
        ++rowCount[value];
    }

    for (const auto &[key, value] : columns) {
        if (value == 0)
            continue;
        --columnCount[0];
        ++columnCount[value];
    }

    for (const auto &[key, value] : rowCount)
        zeros += 1LL * value * getValue(columnCount, key);

    fore(_, 0, P) {
        cin >> R1 >> C1 >> R2 >> C2;

        const int   i   =   which[R1][C1];
        int &r1 =   rows[R1],
            &c1 =   columns[C1],
            &r2 =   rows[R2],
            &c2 =   columns[C2];

        /*

            "Remove" process

        */

        zeros -= getValue(columnCount, r1) + getValue(rowCount, c1);
        if (r1 == c1)
            ++zeros;

        --rowCount[r1];
        --columnCount[c1];

        r1 ^= X[i];
        c1 ^= X[i];

        ++rowCount[r1];
        ++columnCount[c1];
        zeros += getValue(columnCount, r1) + getValue(rowCount, c1);
        if (r1 == c1)
            --zeros;

        /*

            "Add" process

        */

        zeros -= getValue(columnCount, r2) + getValue(rowCount, c2);
        if (r2 == c2)
            ++zeros;

        --rowCount[r2];
        --columnCount[c2];

        r2 ^= X[i];
        c2 ^= X[i];

        ++rowCount[r2];
        ++columnCount[c2];
        zeros += getValue(columnCount, r2) + getValue(rowCount, c2);
        if (r2 == c2)
            --zeros;

        /*

            "Final" steps

        */

        R[i] = R2;
        C[i] = C2;
        which[R2][C2] = i;

        cout << area - zeros << '\n';
    }

    return 0;
}

• Subtask 1: 120 / 120