Submission #539163

#	Time	Username	Problem	Language	Result	Execution time	Memory
539163		Soul234	Topovi (COCI15_topovi)	C++14	120 / 120	1464 ms	39484 KiB

topovi

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

void DBG() { cerr << "]\n"; }
template<class H, class... T> void DBG(H h, T... t) {
    cerr << h; if(sizeof...(t)) cerr << ", ";
    DBG(t...);
}
#ifdef LOCAL
#define dbg(...) cerr << "[" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define dbg(...) 0
#endif // LOCAL

#define FOR(i,a,b) for(int i = (a) ; i<(b) ; i++)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for(int i = (b)-1 ; i>=(a) ; i--)
#define R0F(i,a) ROF(i,0,a)
#define each(e,a) for(auto &e : (a))
#define sz(v) (int)(v).size()
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pb push_back
#define tcT template<class T
#define nl "\n"

using ll = long long;
using vi = vector<int>;
using pi = pair<int,int>;
using str = string;
tcT> using V = vector<T>;
tcT> using pqg = priority_queue<T,vector<T>,greater<T>>;

void setIO(string NAME = "") {
    cin.tie(0)->sync_with_stdio(0);
    if(sz(NAME)) {
        freopen((NAME + ".inp").c_str(),"r",stdin);
        freopen((NAME + ".out").c_str(),"w",stdout);
    }
}

int N, K, P;
ll ans = 0;
map<int,int> ccnt, rcnt, cxor, rxor;
map<pi, int> rook;

void modify(int x, int y, int val) {
    ans -= N - ccnt[rxor[x]];
    ans -= N - rcnt[cxor[y]];
    if(rxor[x] != cxor[y]) ans++;

    rcnt[rxor[x]]--;
    rxor[x] ^= val;
    rcnt[rxor[x]]++;

    ccnt[cxor[y]]--;
    cxor[y] ^= val;
    ccnt[cxor[y]]++;

    ans += N - ccnt[rxor[x]];
    ans += N - rcnt[cxor[y]];
    if(rxor[x] != cxor[y]) ans--;
    rook[{x,y}] ^= val;
}

void solve() {
    cin>>N>>K>>P;
    ccnt[0] = rcnt[0] = N;
    F0R(i,K) {
        int r,c,x;
        cin>>r>>c>>x;
        modify(r,c,x);
    }
    F0R(i,P) {
        int r1, c1, r2, c2;
        cin>>r1>>c1>>r2>>c2;
        int val = rook[{r1, c1}];
        modify(r1, c1, val);
        modify(r2, c2, val);
        cout << ans << nl;
    }
}

int main() {
    setIO();

    int t=1;
    //cin>>t;
    while(t-->0) {
        solve();
    }

    return 0;
}

Compilation message (stderr)

topovi.cpp: In function 'void setIO(std::string)':
topovi.cpp:37:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   37 |         freopen((NAME + ".inp").c_str(),"r",stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
topovi.cpp:38:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |         freopen((NAME + ".out").c_str(),"w",stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 120 / 120