Submission #465389

#	Time	Username	Problem	Language	Result	Execution time	Memory
465389		JovanB	Topovi (COCI15_topovi)	C++17	120 / 120	1135 ms	39516 KiB

topovi

#include <bits/stdc++.h>
using namespace std;

using ll = long long;
using ld = long double;

map <int, int> row;
map <int, int> col;
map <int, int> crow;
map <int, int> ccol;
map <pair <int, int>, int> pw;

ll tr;

void uradi(int i, int j, int p){
    crow[row[i]]--;
    tr -= ccol[row[i]];
    row[i] ^= p;
    tr += ccol[row[i]];
    crow[row[i]]++;
    ccol[col[j]]--;
    tr -= crow[col[j]];
    col[j] ^= p;
    tr += crow[col[j]];
    ccol[col[j]]++;
    pw[{i, j}] = p;
}

int main(){
    ios_base::sync_with_stdio(false), cin.tie(0);
	cout.precision(10);
	cout << fixed;

    ll n;
    int k, p;
    cin >> n >> k >> p;
    ccol[0] = crow[0] = n;
    tr = n*n;
    while(k--){
        int i, j, pww;
        cin >> i >> j >> pww;
        uradi(i, j, pww);
    }
    while(p--){
        int i, j;
        cin >> i >> j;
        int pww = pw[{i, j}];
        uradi(i, j, pww);
        pw[{i, j}] = 0;
        cin >> i >> j;
        uradi(i, j, pww);
        cout << n*n - tr << "\n";
    }
    return 0;
}

• Subtask 1: 120 / 120