Submission #371240

#	Time	Username	Problem	Language	Result	Execution time	Memory
371240		Atill83	Topovi (COCI15_topovi)	C++14	120 / 120	567 ms	25292 KiB

topovi

#include <bits/stdc++.h>
#define ff first
#define ss second
#define endl '\n'
using namespace std;
const long long INF = (long long) 1e18;
const int mod = (int) 1e9+7;
const int MAXN = (int) 3e5+5;

typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
int n, k, p;
unordered_map<int, int> col, row, kc, kr;
map<pii, int> mp;

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);

    #ifdef Local
        freopen("C:/Users/Admin/Desktop/Yazilim/C/IO/int.txt","r",stdin);
        freopen("C:/Users/Admin/Desktop/Yazilim/C/IO/out.txt","w",stdout);
    #endif

    cin>>n>>k>>p;
    kc[0] = kr[0] = n;
    for(int i = 0; i < k; i++){
        int x, y, pow;
        cin>>x>>y>>pow;
        mp[{x, y}] = pow;
        kc[col[y]]--;
        kr[row[x]]--;
        col[y] = (col[y] ^ pow);
        row[x] = (row[x] ^ pow);

        kc[col[y]]++;
        kr[row[x]]++;
        
    }

    ll ans = 1LL * n * n;


    for(auto u: kc){
        ans -= 1LL * u.ss * kr[u.ff];
    }

    for(int i = 0; i < p; i++){
        int x1, y1, x2, y2;
        cin>>x1>>y1>>x2>>y2;
        auto u = mp.find({x1, y1});
        int pwer = (*u).ss;

        mp.erase(u);
        mp[{x2, y2}] = pwer;

        int degR = row[x1], degC = col[y1];
        ans += kc[degR];
        kr[degR]--;
        ans += kr[degC];
        kc[degC]--;

        row[x1] ^= pwer;
        col[y1] ^= pwer;
        ans -= kr[col[y1]];
        kc[col[y1]]++;
        ans -= kc[row[x1]];
        kr[row[x1]]++;

        degR = row[x2], degC = col[y2];

        ans += kc[degR];
        kr[degR]--;
        ans += kr[degC];
        kc[degC]--;

        row[x2] ^= pwer;
        col[y2] ^= pwer;
        ans -= kr[col[y2]];
        kc[col[y2]]++;
        ans -= kc[row[x2]];
        kr[row[x2]]++;

        cout<<ans<<endl;
    }



    #ifdef Local
        cout<<endl<<fixed<<setprecision(2)<<1000.0 * clock() / CLOCKS_PER_SEC<< " milliseconds ";
    #endif
}

• Subtask 1: 120 / 120