Submission #100760

#	Time	Username	Problem	Language	Result	Execution time	Memory
100760		dalgerok	Topovi (COCI15_topovi)	C++17	120 / 120	1517 ms	39672 KiB

topovi

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


int n, k, p;
map < int, int > a, b, aa, bb;
map < pair < int, int >, int > q;
long long ans;

inline void upd(int x, int y, int z){
    ans -= (n - aa[a[x]]);
    ans -= (n - bb[b[y]]);
    aa[b[y]] -= 1;
    bb[a[x]] -= 1;
    a[x] ^= z;
    b[y] ^= z;
    aa[b[y]] += 1;
    bb[a[x]] += 1;
    ans += (n - aa[a[x]]);
    ans += (n - bb[b[y]]);
}

int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
    cin >> n >> k >> p;
    aa[0] = bb[0] = n;
    for(int i = 1; i <= k; i++){
        int x, y, z;
        cin >> x >> y >> z;
        q[make_pair(x, y)] = z;
        upd(x, y, z);
    }
    while(p--){
        int x1, y1, x2, y2;
        cin >> x1 >> y1 >> x2 >> y2;
        int z = q[make_pair(x1, y1)];
        upd(x1, y1, z);
        upd(x2, y2, z);
        q[make_pair(x2, y2)] = q[make_pair(x1, y1)];
        cout << ans << "\n";
    }
}
/**
2 2 2
1 1 1
2 2 1
2 2 2 1
1 1 1 2
*/

• Subtask 1: 120 / 120